* [patch 13/14] powerpc: Convert to new irq_* function names
From: Thomas Gleixner @ 2011-03-25 21:36 UTC (permalink / raw)
To: Benjamin Herrenschmidt; +Cc: Lennert Buytenhek, linuxppc-dev
In-Reply-To: <20110325164049.138289403@linutronix.de>
Scripted with coccinelle.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
arch/powerpc/kernel/irq.c | 6 +++---
arch/powerpc/kernel/machine_kexec.c | 2 +-
arch/powerpc/kernel/pci-common.c | 2 +-
arch/powerpc/platforms/512x/mpc5121_ads_cpld.c | 4 ++--
arch/powerpc/platforms/52xx/media5200.c | 10 +++++-----
arch/powerpc/platforms/52xx/mpc52xx_gpt.c | 10 +++++-----
arch/powerpc/platforms/52xx/mpc52xx_pic.c | 6 +++---
arch/powerpc/platforms/82xx/pq2ads-pci-pic.c | 14 +++++++-------
arch/powerpc/platforms/85xx/ksi8560.c | 4 ++--
arch/powerpc/platforms/85xx/mpc85xx_ads.c | 4 ++--
arch/powerpc/platforms/85xx/mpc85xx_cds.c | 2 +-
arch/powerpc/platforms/85xx/mpc85xx_ds.c | 4 ++--
arch/powerpc/platforms/85xx/sbc8560.c | 4 ++--
arch/powerpc/platforms/85xx/socrates_fpga_pic.c | 10 +++++-----
arch/powerpc/platforms/85xx/stx_gp3.c | 4 ++--
arch/powerpc/platforms/85xx/tqm85xx.c | 4 ++--
arch/powerpc/platforms/86xx/gef_pic.c | 6 +++---
arch/powerpc/platforms/86xx/pic.c | 4 ++--
arch/powerpc/platforms/8xx/m8xx_setup.c | 6 +++---
arch/powerpc/platforms/cell/axon_msi.c | 14 +++++++-------
arch/powerpc/platforms/cell/beat_interrupt.c | 2 +-
arch/powerpc/platforms/cell/interrupt.c | 16 ++++++++--------
arch/powerpc/platforms/cell/setup.c | 8 ++++----
arch/powerpc/platforms/cell/spider-pic.c | 12 ++++++------
arch/powerpc/platforms/chrp/setup.c | 4 ++--
arch/powerpc/platforms/embedded6xx/flipper-pic.c | 8 ++++----
arch/powerpc/platforms/embedded6xx/hlwd-pic.c | 16 ++++++++--------
arch/powerpc/platforms/embedded6xx/holly.c | 4 ++--
arch/powerpc/platforms/embedded6xx/mpc7448_hpc2.c | 4 ++--
arch/powerpc/platforms/iseries/irq.c | 4 ++--
arch/powerpc/platforms/maple/pci.c | 2 +-
arch/powerpc/platforms/pasemi/setup.c | 2 +-
arch/powerpc/platforms/powermac/pci.c | 2 +-
arch/powerpc/platforms/powermac/pic.c | 12 ++++++------
arch/powerpc/platforms/ps3/interrupt.c | 14 +++++++-------
arch/powerpc/platforms/pseries/msi.c | 4 ++--
arch/powerpc/platforms/pseries/setup.c | 4 ++--
arch/powerpc/platforms/pseries/xics.c | 6 +++---
arch/powerpc/sysdev/cpm1.c | 2 +-
arch/powerpc/sysdev/cpm2_pic.c | 6 +++---
arch/powerpc/sysdev/fsl_msi.c | 22 +++++++++++-----------
arch/powerpc/sysdev/i8259.c | 4 ++--
arch/powerpc/sysdev/ipic.c | 6 +++---
arch/powerpc/sysdev/mpc8xx_pic.c | 4 ++--
arch/powerpc/sysdev/mpc8xxx_gpio.c | 12 ++++++------
arch/powerpc/sysdev/mpic.c | 14 +++++++-------
arch/powerpc/sysdev/mpic_pasemi_msi.c | 8 ++++----
arch/powerpc/sysdev/mpic_u3msi.c | 8 ++++----
arch/powerpc/sysdev/mv64x60_pic.c | 3 ++-
arch/powerpc/sysdev/qe_lib/qe_ic.c | 14 +++++++-------
arch/powerpc/sysdev/tsi108_pci.c | 4 ++--
arch/powerpc/sysdev/uic.c | 14 +++++++-------
arch/powerpc/sysdev/xilinx_intc.c | 14 +++++++-------
53 files changed, 190 insertions(+), 189 deletions(-)
Index: linux-2.6-tip/arch/powerpc/kernel/irq.c
===================================================================
--- linux-2.6-tip.orig/arch/powerpc/kernel/irq.c
+++ linux-2.6-tip/arch/powerpc/kernel/irq.c
@@ -829,7 +829,7 @@ unsigned int irq_create_of_mapping(struc
/* Set type if specified and different than the current one */
if (type != IRQ_TYPE_NONE &&
type != (irqd_get_trigger_type(irq_get_irq_data(virq))))
- set_irq_type(virq, type);
+ irq_set_irq_type(virq, type);
return virq;
}
EXPORT_SYMBOL_GPL(irq_create_of_mapping);
@@ -852,7 +852,7 @@ void irq_dispose_mapping(unsigned int vi
return;
/* remove chip and handler */
- set_irq_chip_and_handler(virq, NULL, NULL);
+ irq_set_chip_and_handler(virq, NULL, NULL);
/* Make sure it's completed */
synchronize_irq(virq);
@@ -1157,7 +1157,7 @@ static int virq_debug_show(struct seq_fi
seq_printf(m, "%5d ", i);
seq_printf(m, "0x%05lx ", virq_to_hw(i));
- chip = get_irq_desc_chip(desc);
+ chip = irq_desc_get_chip(desc);
if (chip && chip->name)
p = chip->name;
else
Index: linux-2.6-tip/arch/powerpc/kernel/machine_kexec.c
===================================================================
--- linux-2.6-tip.orig/arch/powerpc/kernel/machine_kexec.c
+++ linux-2.6-tip/arch/powerpc/kernel/machine_kexec.c
@@ -31,7 +31,7 @@ void machine_kexec_mask_interrupts(void)
if (!desc)
continue;
- chip = get_irq_desc_chip(desc);
+ chip = irq_desc_get_chip(desc);
if (!chip)
continue;
Index: linux-2.6-tip/arch/powerpc/kernel/pci-common.c
===================================================================
--- linux-2.6-tip.orig/arch/powerpc/kernel/pci-common.c
+++ linux-2.6-tip/arch/powerpc/kernel/pci-common.c
@@ -261,7 +261,7 @@ int pci_read_irq_line(struct pci_dev *pc
virq = irq_create_mapping(NULL, line);
if (virq != NO_IRQ)
- set_irq_type(virq, IRQ_TYPE_LEVEL_LOW);
+ irq_set_irq_type(virq, IRQ_TYPE_LEVEL_LOW);
} else {
pr_debug(" Got one, spec %d cells (0x%08x 0x%08x...) on %s\n",
oirq.size, oirq.specifier[0], oirq.specifier[1],
Index: linux-2.6-tip/arch/powerpc/platforms/512x/mpc5121_ads_cpld.c
===================================================================
--- linux-2.6-tip.orig/arch/powerpc/platforms/512x/mpc5121_ads_cpld.c
+++ linux-2.6-tip/arch/powerpc/platforms/512x/mpc5121_ads_cpld.c
@@ -133,7 +133,7 @@ cpld_pic_host_map(struct irq_host *h, un
irq_hw_number_t hw)
{
irq_set_status_flags(virq, IRQ_LEVEL);
- set_irq_chip_and_handler(virq, &cpld_pic, handle_level_irq);
+ irq_set_chip_and_handler(virq, &cpld_pic, handle_level_irq);
return 0;
}
@@ -198,7 +198,7 @@ mpc5121_ads_cpld_pic_init(void)
goto end;
}
- set_irq_chained_handler(cascade_irq, cpld_pic_cascade);
+ irq_set_chained_handler(cascade_irq, cpld_pic_cascade);
end:
of_node_put(np);
}
Index: linux-2.6-tip/arch/powerpc/platforms/52xx/media5200.c
===================================================================
--- linux-2.6-tip.orig/arch/powerpc/platforms/52xx/media5200.c
+++ linux-2.6-tip/arch/powerpc/platforms/52xx/media5200.c
@@ -82,7 +82,7 @@ static struct irq_chip media5200_irq_chi
void media5200_irq_cascade(unsigned int virq, struct irq_desc *desc)
{
- struct irq_chip *chip = get_irq_desc_chip(desc);
+ struct irq_chip *chip = irq_desc_get_chip(desc);
int sub_virq, val;
u32 status, enable;
@@ -116,8 +116,8 @@ static int media5200_irq_map(struct irq_
irq_hw_number_t hw)
{
pr_debug("%s: h=%p, virq=%i, hwirq=%i\n", __func__, h, virq, (int)hw);
- set_irq_chip_data(virq, &media5200_irq);
- set_irq_chip_and_handler(virq, &media5200_irq_chip, handle_level_irq);
+ irq_set_chip_data(virq, &media5200_irq);
+ irq_set_chip_and_handler(virq, &media5200_irq_chip, handle_level_irq);
irq_set_status_flags(virq, IRQ_LEVEL);
return 0;
}
@@ -182,8 +182,8 @@ static void __init media5200_init_irq(vo
media5200_irq.irqhost->host_data = &media5200_irq;
- set_irq_data(cascade_virq, &media5200_irq);
- set_irq_chained_handler(cascade_virq, media5200_irq_cascade);
+ irq_set_handler_data(cascade_virq, &media5200_irq);
+ irq_set_chained_handler(cascade_virq, media5200_irq_cascade);
return;
Index: linux-2.6-tip/arch/powerpc/platforms/52xx/mpc52xx_gpt.c
===================================================================
--- linux-2.6-tip.orig/arch/powerpc/platforms/52xx/mpc52xx_gpt.c
+++ linux-2.6-tip/arch/powerpc/platforms/52xx/mpc52xx_gpt.c
@@ -192,7 +192,7 @@ static struct irq_chip mpc52xx_gpt_irq_c
void mpc52xx_gpt_irq_cascade(unsigned int virq, struct irq_desc *desc)
{
- struct mpc52xx_gpt_priv *gpt = get_irq_data(virq);
+ struct mpc52xx_gpt_priv *gpt = irq_get_handler_data(virq);
int sub_virq;
u32 status;
@@ -209,8 +209,8 @@ static int mpc52xx_gpt_irq_map(struct ir
struct mpc52xx_gpt_priv *gpt = h->host_data;
dev_dbg(gpt->dev, "%s: h=%p, virq=%i\n", __func__, h, virq);
- set_irq_chip_data(virq, gpt);
- set_irq_chip_and_handler(virq, &mpc52xx_gpt_irq_chip, handle_edge_irq);
+ irq_set_chip_data(virq, gpt);
+ irq_set_chip_and_handler(virq, &mpc52xx_gpt_irq_chip, handle_edge_irq);
return 0;
}
@@ -259,8 +259,8 @@ mpc52xx_gpt_irq_setup(struct mpc52xx_gpt
}
gpt->irqhost->host_data = gpt;
- set_irq_data(cascade_virq, gpt);
- set_irq_chained_handler(cascade_virq, mpc52xx_gpt_irq_cascade);
+ irq_set_handler_data(cascade_virq, gpt);
+ irq_set_chained_handler(cascade_virq, mpc52xx_gpt_irq_cascade);
/* If the GPT is currently disabled, then change it to be in Input
* Capture mode. If the mode is non-zero, then the pin could be
Index: linux-2.6-tip/arch/powerpc/platforms/52xx/mpc52xx_pic.c
===================================================================
--- linux-2.6-tip.orig/arch/powerpc/platforms/52xx/mpc52xx_pic.c
+++ linux-2.6-tip/arch/powerpc/platforms/52xx/mpc52xx_pic.c
@@ -214,7 +214,7 @@ static int mpc52xx_extirq_set_type(struc
ctrl_reg |= (type << (22 - (l2irq * 2)));
out_be32(&intr->ctrl, ctrl_reg);
- __set_irq_handler_unlocked(d->irq, handler);
+ __irq_set_handler_locked(d->irq, handler);
return 0;
}
@@ -414,7 +414,7 @@ static int mpc52xx_irqhost_map(struct ir
else
hndlr = handle_level_irq;
- set_irq_chip_and_handler(virq, &mpc52xx_extirq_irqchip, hndlr);
+ irq_set_chip_and_handler(virq, &mpc52xx_extirq_irqchip, hndlr);
pr_debug("%s: External IRQ%i virq=%x, hw=%x. type=%x\n",
__func__, l2irq, virq, (int)irq, type);
return 0;
@@ -431,7 +431,7 @@ static int mpc52xx_irqhost_map(struct ir
return -EINVAL;
}
- set_irq_chip_and_handler(virq, irqchip, handle_level_irq);
+ irq_set_chip_and_handler(virq, irqchip, handle_level_irq);
pr_debug("%s: virq=%x, l1=%i, l2=%i\n", __func__, virq, l1irq, l2irq);
return 0;
Index: linux-2.6-tip/arch/powerpc/platforms/82xx/pq2ads-pci-pic.c
===================================================================
--- linux-2.6-tip.orig/arch/powerpc/platforms/82xx/pq2ads-pci-pic.c
+++ linux-2.6-tip/arch/powerpc/platforms/82xx/pq2ads-pci-pic.c
@@ -81,7 +81,7 @@ static struct irq_chip pq2ads_pci_ic = {
static void pq2ads_pci_irq_demux(unsigned int irq, struct irq_desc *desc)
{
- struct pq2ads_pci_pic *priv = get_irq_desc_data(desc);
+ struct pq2ads_pci_pic *priv = irq_desc_get_handler_data(desc);
u32 stat, mask, pend;
int bit;
@@ -107,16 +107,16 @@ static int pci_pic_host_map(struct irq_h
irq_hw_number_t hw)
{
irq_set_status_flags(virq, IRQ_LEVEL);
- set_irq_chip_data(virq, h->host_data);
- set_irq_chip_and_handler(virq, &pq2ads_pci_ic, handle_level_irq);
+ irq_set_chip_data(virq, h->host_data);
+ irq_set_chip_and_handler(virq, &pq2ads_pci_ic, handle_level_irq);
return 0;
}
static void pci_host_unmap(struct irq_host *h, unsigned int virq)
{
/* remove chip and handler */
- set_irq_chip_data(virq, NULL);
- set_irq_chip(virq, NULL);
+ irq_set_chip_data(virq, NULL);
+ irq_set_chip(virq, NULL);
}
static struct irq_host_ops pci_pic_host_ops = {
@@ -175,8 +175,8 @@ int __init pq2ads_pci_init_irq(void)
priv->host = host;
host->host_data = priv;
- set_irq_data(irq, priv);
- set_irq_chained_handler(irq, pq2ads_pci_irq_demux);
+ irq_set_handler_data(irq, priv);
+ irq_set_chained_handler(irq, pq2ads_pci_irq_demux);
of_node_put(np);
return 0;
Index: linux-2.6-tip/arch/powerpc/platforms/85xx/ksi8560.c
===================================================================
--- linux-2.6-tip.orig/arch/powerpc/platforms/85xx/ksi8560.c
+++ linux-2.6-tip/arch/powerpc/platforms/85xx/ksi8560.c
@@ -56,7 +56,7 @@ static void machine_restart(char *cmd)
static void cpm2_cascade(unsigned int irq, struct irq_desc *desc)
{
- struct irq_chip *chip = get_irq_desc_chip(desc);
+ struct irq_chip *chip = irq_desc_get_chip(desc);
int cascade_irq;
while ((cascade_irq = cpm2_get_irq()) >= 0)
@@ -106,7 +106,7 @@ static void __init ksi8560_pic_init(void
cpm2_pic_init(np);
of_node_put(np);
- set_irq_chained_handler(irq, cpm2_cascade);
+ irq_set_chained_handler(irq, cpm2_cascade);
#endif
}
Index: linux-2.6-tip/arch/powerpc/platforms/85xx/mpc85xx_ads.c
===================================================================
--- linux-2.6-tip.orig/arch/powerpc/platforms/85xx/mpc85xx_ads.c
+++ linux-2.6-tip/arch/powerpc/platforms/85xx/mpc85xx_ads.c
@@ -50,7 +50,7 @@ static int mpc85xx_exclude_device(struct
static void cpm2_cascade(unsigned int irq, struct irq_desc *desc)
{
- struct irq_chip *chip = get_irq_desc_chip(desc);
+ struct irq_chip *chip = irq_desc_get_chip(desc);
int cascade_irq;
while ((cascade_irq = cpm2_get_irq()) >= 0)
@@ -101,7 +101,7 @@ static void __init mpc85xx_ads_pic_init(
cpm2_pic_init(np);
of_node_put(np);
- set_irq_chained_handler(irq, cpm2_cascade);
+ irq_set_chained_handler(irq, cpm2_cascade);
#endif
}
Index: linux-2.6-tip/arch/powerpc/platforms/85xx/mpc85xx_cds.c
===================================================================
--- linux-2.6-tip.orig/arch/powerpc/platforms/85xx/mpc85xx_cds.c
+++ linux-2.6-tip/arch/powerpc/platforms/85xx/mpc85xx_cds.c
@@ -255,7 +255,7 @@ static int mpc85xx_cds_8259_attach(void)
}
/* Success. Connect our low-level cascade handler. */
- set_irq_handler(cascade_irq, mpc85xx_8259_cascade_handler);
+ irq_set_handler(cascade_irq, mpc85xx_8259_cascade_handler);
return 0;
}
Index: linux-2.6-tip/arch/powerpc/platforms/85xx/mpc85xx_ds.c
===================================================================
--- linux-2.6-tip.orig/arch/powerpc/platforms/85xx/mpc85xx_ds.c
+++ linux-2.6-tip/arch/powerpc/platforms/85xx/mpc85xx_ds.c
@@ -47,7 +47,7 @@
#ifdef CONFIG_PPC_I8259
static void mpc85xx_8259_cascade(unsigned int irq, struct irq_desc *desc)
{
- struct irq_chip *chip = get_irq_desc_chip(desc);
+ struct irq_chip *chip = irq_desc_get_chip(desc);
unsigned int cascade_irq = i8259_irq();
if (cascade_irq != NO_IRQ) {
@@ -122,7 +122,7 @@ void __init mpc85xx_ds_pic_init(void)
i8259_init(cascade_node, 0);
of_node_put(cascade_node);
- set_irq_chained_handler(cascade_irq, mpc85xx_8259_cascade);
+ irq_set_chained_handler(cascade_irq, mpc85xx_8259_cascade);
#endif /* CONFIG_PPC_I8259 */
}
Index: linux-2.6-tip/arch/powerpc/platforms/85xx/sbc8560.c
===================================================================
--- linux-2.6-tip.orig/arch/powerpc/platforms/85xx/sbc8560.c
+++ linux-2.6-tip/arch/powerpc/platforms/85xx/sbc8560.c
@@ -41,7 +41,7 @@
static void cpm2_cascade(unsigned int irq, struct irq_desc *desc)
{
- struct irq_chip *chip = get_irq_desc_chip(desc);
+ struct irq_chip *chip = irq_desc_get_chip(desc);
int cascade_irq;
while ((cascade_irq = cpm2_get_irq()) >= 0)
@@ -92,7 +92,7 @@ static void __init sbc8560_pic_init(void
cpm2_pic_init(np);
of_node_put(np);
- set_irq_chained_handler(irq, cpm2_cascade);
+ irq_set_chained_handler(irq, cpm2_cascade);
#endif
}
Index: linux-2.6-tip/arch/powerpc/platforms/85xx/socrates_fpga_pic.c
===================================================================
--- linux-2.6-tip.orig/arch/powerpc/platforms/85xx/socrates_fpga_pic.c
+++ linux-2.6-tip/arch/powerpc/platforms/85xx/socrates_fpga_pic.c
@@ -93,7 +93,7 @@ static inline unsigned int socrates_fpga
void socrates_fpga_pic_cascade(unsigned int irq, struct irq_desc *desc)
{
- struct irq_chip *chip = get_irq_desc_chip(desc);
+ struct irq_chip *chip = irq_desc_get_chip(desc);
unsigned int cascade_irq;
/*
@@ -246,8 +246,8 @@ static int socrates_fpga_pic_host_map(st
{
/* All interrupts are LEVEL sensitive */
irq_set_status_flags(virq, IRQ_LEVEL);
- set_irq_chip_and_handler(virq, &socrates_fpga_pic_chip,
- handle_fasteoi_irq);
+ irq_set_chip_and_handler(virq, &socrates_fpga_pic_chip,
+ handle_fasteoi_irq);
return 0;
}
@@ -308,8 +308,8 @@ void socrates_fpga_pic_init(struct devic
pr_warning("FPGA PIC: can't get irq%d.\n", i);
continue;
}
- set_irq_chained_handler(socrates_fpga_irqs[i],
- socrates_fpga_pic_cascade);
+ irq_set_chained_handler(socrates_fpga_irqs[i],
+ socrates_fpga_pic_cascade);
}
socrates_fpga_pic_iobase = of_iomap(pic, 0);
Index: linux-2.6-tip/arch/powerpc/platforms/85xx/stx_gp3.c
===================================================================
--- linux-2.6-tip.orig/arch/powerpc/platforms/85xx/stx_gp3.c
+++ linux-2.6-tip/arch/powerpc/platforms/85xx/stx_gp3.c
@@ -46,7 +46,7 @@
static void cpm2_cascade(unsigned int irq, struct irq_desc *desc)
{
- struct irq_chip *chip = get_irq_desc_chip(desc);
+ struct irq_chip *chip = irq_desc_get_chip(desc);
int cascade_irq;
while ((cascade_irq = cpm2_get_irq()) >= 0)
@@ -102,7 +102,7 @@ static void __init stx_gp3_pic_init(void
cpm2_pic_init(np);
of_node_put(np);
- set_irq_chained_handler(irq, cpm2_cascade);
+ irq_set_chained_handler(irq, cpm2_cascade);
#endif
}
Index: linux-2.6-tip/arch/powerpc/platforms/85xx/tqm85xx.c
===================================================================
--- linux-2.6-tip.orig/arch/powerpc/platforms/85xx/tqm85xx.c
+++ linux-2.6-tip/arch/powerpc/platforms/85xx/tqm85xx.c
@@ -44,7 +44,7 @@
static void cpm2_cascade(unsigned int irq, struct irq_desc *desc)
{
- struct irq_chip *chip = get_irq_desc_chip(desc);
+ struct irq_chip *chip = irq_desc_get_chip(desc);
int cascade_irq;
while ((cascade_irq = cpm2_get_irq()) >= 0)
@@ -100,7 +100,7 @@ static void __init tqm85xx_pic_init(void
cpm2_pic_init(np);
of_node_put(np);
- set_irq_chained_handler(irq, cpm2_cascade);
+ irq_set_chained_handler(irq, cpm2_cascade);
#endif
}
Index: linux-2.6-tip/arch/powerpc/platforms/86xx/gef_pic.c
===================================================================
--- linux-2.6-tip.orig/arch/powerpc/platforms/86xx/gef_pic.c
+++ linux-2.6-tip/arch/powerpc/platforms/86xx/gef_pic.c
@@ -95,7 +95,7 @@ static int gef_pic_cascade_irq;
void gef_pic_cascade(unsigned int irq, struct irq_desc *desc)
{
- struct irq_chip *chip = get_irq_desc_chip(desc);
+ struct irq_chip *chip = irq_desc_get_chip(desc);
unsigned int cascade_irq;
/*
@@ -164,7 +164,7 @@ static int gef_pic_host_map(struct irq_h
{
/* All interrupts are LEVEL sensitive */
irq_set_status_flags(virq, IRQ_LEVEL);
- set_irq_chip_and_handler(virq, &gef_pic_chip, handle_level_irq);
+ irq_set_chip_and_handler(virq, &gef_pic_chip, handle_level_irq);
return 0;
}
@@ -225,7 +225,7 @@ void __init gef_pic_init(struct device_n
return;
/* Chain with parent controller */
- set_irq_chained_handler(gef_pic_cascade_irq, gef_pic_cascade);
+ irq_set_chained_handler(gef_pic_cascade_irq, gef_pic_cascade);
}
/*
Index: linux-2.6-tip/arch/powerpc/platforms/86xx/pic.c
===================================================================
--- linux-2.6-tip.orig/arch/powerpc/platforms/86xx/pic.c
+++ linux-2.6-tip/arch/powerpc/platforms/86xx/pic.c
@@ -19,7 +19,7 @@
#ifdef CONFIG_PPC_I8259
static void mpc86xx_8259_cascade(unsigned int irq, struct irq_desc *desc)
{
- struct irq_chip *chip = get_irq_desc_chip(desc);
+ struct irq_chip *chip = irq_desc_get_chip(desc);
unsigned int cascade_irq = i8259_irq();
if (cascade_irq != NO_IRQ)
@@ -77,6 +77,6 @@ void __init mpc86xx_init_irq(void)
i8259_init(cascade_node, 0);
of_node_put(cascade_node);
- set_irq_chained_handler(cascade_irq, mpc86xx_8259_cascade);
+ irq_set_chained_handler(cascade_irq, mpc86xx_8259_cascade);
#endif
}
Index: linux-2.6-tip/arch/powerpc/platforms/8xx/m8xx_setup.c
===================================================================
--- linux-2.6-tip.orig/arch/powerpc/platforms/8xx/m8xx_setup.c
+++ linux-2.6-tip/arch/powerpc/platforms/8xx/m8xx_setup.c
@@ -226,11 +226,11 @@ static void cpm_cascade(unsigned int irq
generic_handle_irq(cascade_irq);
- chip = get_irq_desc_chip(cdesc);
+ chip = irq_desc_get_chip(cdesc);
chip->irq_eoi(&cdesc->irq_data);
}
- chip = get_irq_desc_chip(desc);
+ chip = irq_desc_get_chip(desc);
chip->irq_eoi(&desc->irq_data);
}
@@ -251,5 +251,5 @@ void __init mpc8xx_pics_init(void)
irq = cpm_pic_init();
if (irq != NO_IRQ)
- set_irq_chained_handler(irq, cpm_cascade);
+ irq_set_chained_handler(irq, cpm_cascade);
}
Index: linux-2.6-tip/arch/powerpc/platforms/cell/axon_msi.c
===================================================================
--- linux-2.6-tip.orig/arch/powerpc/platforms/cell/axon_msi.c
+++ linux-2.6-tip/arch/powerpc/platforms/cell/axon_msi.c
@@ -93,8 +93,8 @@ static void msic_dcr_write(struct axon_m
static void axon_msi_cascade(unsigned int irq, struct irq_desc *desc)
{
- struct irq_chip *chip = get_irq_desc_chip(desc);
- struct axon_msic *msic = get_irq_data(irq);
+ struct irq_chip *chip = irq_desc_get_chip(desc);
+ struct axon_msic *msic = irq_get_handler_data(irq);
u32 write_offset, msi;
int idx;
int retry = 0;
@@ -287,7 +287,7 @@ static int axon_msi_setup_msi_irqs(struc
}
dev_dbg(&dev->dev, "axon_msi: allocated virq 0x%x\n", virq);
- set_irq_msi(virq, entry);
+ irq_set_msi_desc(virq, entry);
msg.data = virq;
write_msi_msg(virq, &msg);
}
@@ -305,7 +305,7 @@ static void axon_msi_teardown_msi_irqs(s
if (entry->irq == NO_IRQ)
continue;
- set_irq_msi(entry->irq, NULL);
+ irq_set_msi_desc(entry->irq, NULL);
irq_dispose_mapping(entry->irq);
}
}
@@ -320,7 +320,7 @@ static struct irq_chip msic_irq_chip = {
static int msic_host_map(struct irq_host *h, unsigned int virq,
irq_hw_number_t hw)
{
- set_irq_chip_and_handler(virq, &msic_irq_chip, handle_simple_irq);
+ irq_set_chip_and_handler(virq, &msic_irq_chip, handle_simple_irq);
return 0;
}
@@ -400,8 +400,8 @@ static int axon_msi_probe(struct platfor
msic->irq_host->host_data = msic;
- set_irq_data(virq, msic);
- set_irq_chained_handler(virq, axon_msi_cascade);
+ irq_set_handler_data(virq, msic);
+ irq_set_chained_handler(virq, axon_msi_cascade);
pr_devel("axon_msi: irq 0x%x setup for axon_msi\n", virq);
/* Enable the MSIC hardware */
Index: linux-2.6-tip/arch/powerpc/platforms/cell/beat_interrupt.c
===================================================================
--- linux-2.6-tip.orig/arch/powerpc/platforms/cell/beat_interrupt.c
+++ linux-2.6-tip/arch/powerpc/platforms/cell/beat_interrupt.c
@@ -143,7 +143,7 @@ static int beatic_pic_host_map(struct ir
return -EIO;
irq_set_status_flags(virq, IRQ_LEVEL);
- set_irq_chip_and_handler(virq, &beatic_pic, handle_fasteoi_irq);
+ irq_set_chip_and_handler(virq, &beatic_pic, handle_fasteoi_irq);
return 0;
}
Index: linux-2.6-tip/arch/powerpc/platforms/cell/interrupt.c
===================================================================
--- linux-2.6-tip.orig/arch/powerpc/platforms/cell/interrupt.c
+++ linux-2.6-tip/arch/powerpc/platforms/cell/interrupt.c
@@ -101,9 +101,9 @@ static void iic_ioexc_eoi(struct irq_dat
static void iic_ioexc_cascade(unsigned int irq, struct irq_desc *desc)
{
- struct irq_chip *chip = get_irq_desc_chip(desc);
+ struct irq_chip *chip = irq_desc_get_chip(desc);
struct cbe_iic_regs __iomem *node_iic =
- (void __iomem *)get_irq_desc_data(desc);
+ (void __iomem *)irq_desc_get_handler_data(desc);
unsigned int base = (irq & 0xffffff00) | IIC_IRQ_TYPE_IOEXC;
unsigned long bits, ack;
int cascade;
@@ -239,7 +239,7 @@ extern int noirqdebug;
static void handle_iic_irq(unsigned int irq, struct irq_desc *desc)
{
- struct irq_chip *chip = get_irq_desc_chip(desc);
+ struct irq_chip *chip = irq_desc_get_chip(desc);
raw_spin_lock(&desc->lock);
@@ -288,14 +288,14 @@ static int iic_host_map(struct irq_host
{
switch (hw & IIC_IRQ_TYPE_MASK) {
case IIC_IRQ_TYPE_IPI:
- set_irq_chip_and_handler(virq, &iic_chip, handle_percpu_irq);
+ irq_set_chip_and_handler(virq, &iic_chip, handle_percpu_irq);
break;
case IIC_IRQ_TYPE_IOEXC:
- set_irq_chip_and_handler(virq, &iic_ioexc_chip,
+ irq_set_chip_and_handler(virq, &iic_ioexc_chip,
handle_iic_irq);
break;
default:
- set_irq_chip_and_handler(virq, &iic_chip, handle_iic_irq);
+ irq_set_chip_and_handler(virq, &iic_chip, handle_iic_irq);
}
return 0;
}
@@ -412,8 +412,8 @@ static int __init setup_iic(void)
* irq_data is a generic pointer that gets passed back
* to us later, so the forced cast is fine.
*/
- set_irq_data(cascade, (void __force *)node_iic);
- set_irq_chained_handler(cascade , iic_ioexc_cascade);
+ irq_set_handler_data(cascade, (void __force *)node_iic);
+ irq_set_chained_handler(cascade, iic_ioexc_cascade);
out_be64(&node_iic->iic_ir,
(1 << 12) /* priority */ |
(node << 4) /* dest node */ |
Index: linux-2.6-tip/arch/powerpc/platforms/cell/setup.c
===================================================================
--- linux-2.6-tip.orig/arch/powerpc/platforms/cell/setup.c
+++ linux-2.6-tip/arch/powerpc/platforms/cell/setup.c
@@ -187,8 +187,8 @@ machine_subsys_initcall(cell, cell_publi
static void cell_mpic_cascade(unsigned int irq, struct irq_desc *desc)
{
- struct irq_chip *chip = get_irq_desc_chip(desc);
- struct mpic *mpic = get_irq_desc_data(desc);
+ struct irq_chip *chip = irq_desc_get_chip(desc);
+ struct mpic *mpic = irq_desc_get_handler_data(desc);
unsigned int virq;
virq = mpic_get_one_irq(mpic);
@@ -223,8 +223,8 @@ static void __init mpic_init_IRQ(void)
printk(KERN_INFO "%s : hooking up to IRQ %d\n",
dn->full_name, virq);
- set_irq_data(virq, mpic);
- set_irq_chained_handler(virq, cell_mpic_cascade);
+ irq_set_handler_data(virq, mpic);
+ irq_set_chained_handler(virq, cell_mpic_cascade);
}
}
Index: linux-2.6-tip/arch/powerpc/platforms/cell/spider-pic.c
===================================================================
--- linux-2.6-tip.orig/arch/powerpc/platforms/cell/spider-pic.c
+++ linux-2.6-tip/arch/powerpc/platforms/cell/spider-pic.c
@@ -171,10 +171,10 @@ static struct irq_chip spider_pic = {
static int spider_host_map(struct irq_host *h, unsigned int virq,
irq_hw_number_t hw)
{
- set_irq_chip_and_handler(virq, &spider_pic, handle_level_irq);
+ irq_set_chip_and_handler(virq, &spider_pic, handle_level_irq);
/* Set default irq type */
- set_irq_type(virq, IRQ_TYPE_NONE);
+ irq_set_irq_type(virq, IRQ_TYPE_NONE);
return 0;
}
@@ -200,8 +200,8 @@ static struct irq_host_ops spider_host_o
static void spider_irq_cascade(unsigned int irq, struct irq_desc *desc)
{
- struct irq_chip *chip = get_irq_desc_chip(desc);
- struct spider_pic *pic = get_irq_desc_data(desc);
+ struct irq_chip *chip = irq_desc_get_chip(desc);
+ struct spider_pic *pic = irq_desc_get_handler_data(desc);
unsigned int cs, virq;
cs = in_be32(pic->regs + TIR_CS) >> 24;
@@ -321,8 +321,8 @@ static void __init spider_init_one(struc
virq = spider_find_cascade_and_node(pic);
if (virq == NO_IRQ)
return;
- set_irq_data(virq, pic);
- set_irq_chained_handler(virq, spider_irq_cascade);
+ irq_set_handler_data(virq, pic);
+ irq_set_chained_handler(virq, spider_irq_cascade);
printk(KERN_INFO "spider_pic: node %d, addr: 0x%lx %s\n",
pic->node_id, addr, of_node->full_name);
Index: linux-2.6-tip/arch/powerpc/platforms/chrp/setup.c
===================================================================
--- linux-2.6-tip.orig/arch/powerpc/platforms/chrp/setup.c
+++ linux-2.6-tip/arch/powerpc/platforms/chrp/setup.c
@@ -365,7 +365,7 @@ void __init chrp_setup_arch(void)
static void chrp_8259_cascade(unsigned int irq, struct irq_desc *desc)
{
- struct irq_chip *chip = get_irq_desc_chip(desc);
+ struct irq_chip *chip = irq_desc_get_chip(desc);
unsigned int cascade_irq = i8259_irq();
if (cascade_irq != NO_IRQ)
@@ -517,7 +517,7 @@ static void __init chrp_find_8259(void)
if (cascade_irq == NO_IRQ)
printk(KERN_ERR "i8259: failed to map cascade irq\n");
else
- set_irq_chained_handler(cascade_irq,
+ irq_set_chained_handler(cascade_irq,
chrp_8259_cascade);
}
}
Index: linux-2.6-tip/arch/powerpc/platforms/embedded6xx/flipper-pic.c
===================================================================
--- linux-2.6-tip.orig/arch/powerpc/platforms/embedded6xx/flipper-pic.c
+++ linux-2.6-tip/arch/powerpc/platforms/embedded6xx/flipper-pic.c
@@ -101,16 +101,16 @@ static struct irq_host *flipper_irq_host
static int flipper_pic_map(struct irq_host *h, unsigned int virq,
irq_hw_number_t hwirq)
{
- set_irq_chip_data(virq, h->host_data);
+ irq_set_chip_data(virq, h->host_data);
irq_set_status_flags(virq, IRQ_LEVEL);
- set_irq_chip_and_handler(virq, &flipper_pic, handle_level_irq);
+ irq_set_chip_and_handler(virq, &flipper_pic, handle_level_irq);
return 0;
}
static void flipper_pic_unmap(struct irq_host *h, unsigned int irq)
{
- set_irq_chip_data(irq, NULL);
- set_irq_chip(irq, NULL);
+ irq_set_chip_data(irq, NULL);
+ irq_set_chip(irq, NULL);
}
static int flipper_pic_match(struct irq_host *h, struct device_node *np)
Index: linux-2.6-tip/arch/powerpc/platforms/embedded6xx/hlwd-pic.c
===================================================================
--- linux-2.6-tip.orig/arch/powerpc/platforms/embedded6xx/hlwd-pic.c
+++ linux-2.6-tip/arch/powerpc/platforms/embedded6xx/hlwd-pic.c
@@ -94,16 +94,16 @@ static struct irq_host *hlwd_irq_host;
static int hlwd_pic_map(struct irq_host *h, unsigned int virq,
irq_hw_number_t hwirq)
{
- set_irq_chip_data(virq, h->host_data);
+ irq_set_chip_data(virq, h->host_data);
irq_set_status_flags(virq, IRQ_LEVEL);
- set_irq_chip_and_handler(virq, &hlwd_pic, handle_level_irq);
+ irq_set_chip_and_handler(virq, &hlwd_pic, handle_level_irq);
return 0;
}
static void hlwd_pic_unmap(struct irq_host *h, unsigned int irq)
{
- set_irq_chip_data(irq, NULL);
- set_irq_chip(irq, NULL);
+ irq_set_chip_data(irq, NULL);
+ irq_set_chip(irq, NULL);
}
static struct irq_host_ops hlwd_irq_host_ops = {
@@ -129,8 +129,8 @@ static unsigned int __hlwd_pic_get_irq(s
static void hlwd_pic_irq_cascade(unsigned int cascade_virq,
struct irq_desc *desc)
{
- struct irq_chip *chip = get_irq_desc_chip(desc);
- struct irq_host *irq_host = get_irq_data(cascade_virq);
+ struct irq_chip *chip = irq_desc_get_chip(desc);
+ struct irq_host *irq_host = irq_get_handler_data(cascade_virq);
unsigned int virq;
raw_spin_lock(&desc->lock);
@@ -218,8 +218,8 @@ void hlwd_pic_probe(void)
host = hlwd_pic_init(np);
BUG_ON(!host);
cascade_virq = irq_of_parse_and_map(np, 0);
- set_irq_data(cascade_virq, host);
- set_irq_chained_handler(cascade_virq,
+ irq_set_handler_data(cascade_virq, host);
+ irq_set_chained_handler(cascade_virq,
hlwd_pic_irq_cascade);
hlwd_irq_host = host;
break;
Index: linux-2.6-tip/arch/powerpc/platforms/embedded6xx/holly.c
===================================================================
--- linux-2.6-tip.orig/arch/powerpc/platforms/embedded6xx/holly.c
+++ linux-2.6-tip/arch/powerpc/platforms/embedded6xx/holly.c
@@ -198,8 +198,8 @@ static void __init holly_init_IRQ(void)
cascade_pci_irq = irq_of_parse_and_map(tsi_pci, 0);
pr_debug("%s: tsi108 cascade_pci_irq = 0x%x\n", __func__, (u32) cascade_pci_irq);
tsi108_pci_int_init(cascade_node);
- set_irq_data(cascade_pci_irq, mpic);
- set_irq_chained_handler(cascade_pci_irq, tsi108_irq_cascade);
+ irq_set_handler_data(cascade_pci_irq, mpic);
+ irq_set_chained_handler(cascade_pci_irq, tsi108_irq_cascade);
#endif
/* Configure MPIC outputs to CPU0 */
tsi108_write_reg(TSI108_MPIC_OFFSET + 0x30c, 0);
Index: linux-2.6-tip/arch/powerpc/platforms/embedded6xx/mpc7448_hpc2.c
===================================================================
--- linux-2.6-tip.orig/arch/powerpc/platforms/embedded6xx/mpc7448_hpc2.c
+++ linux-2.6-tip/arch/powerpc/platforms/embedded6xx/mpc7448_hpc2.c
@@ -153,8 +153,8 @@ static void __init mpc7448_hpc2_init_IRQ
DBG("%s: tsi108 cascade_pci_irq = 0x%x\n", __func__,
(u32) cascade_pci_irq);
tsi108_pci_int_init(cascade_node);
- set_irq_data(cascade_pci_irq, mpic);
- set_irq_chained_handler(cascade_pci_irq, tsi108_irq_cascade);
+ irq_set_handler_data(cascade_pci_irq, mpic);
+ irq_set_chained_handler(cascade_pci_irq, tsi108_irq_cascade);
#endif
/* Configure MPIC outputs to CPU0 */
tsi108_write_reg(TSI108_MPIC_OFFSET + 0x30c, 0);
Index: linux-2.6-tip/arch/powerpc/platforms/iseries/irq.c
===================================================================
--- linux-2.6-tip.orig/arch/powerpc/platforms/iseries/irq.c
+++ linux-2.6-tip/arch/powerpc/platforms/iseries/irq.c
@@ -220,7 +220,7 @@ void __init iSeries_activate_IRQs()
if (!desc)
continue;
- chip = get_irq_desc_chip(desc);
+ chip = irq_desc_get_chip(desc);
if (chip && chip->irq_startup) {
raw_spin_lock_irqsave(&desc->lock, flags);
chip->irq_startup(&desc->irq_data);
@@ -346,7 +346,7 @@ unsigned int iSeries_get_irq(void)
static int iseries_irq_host_map(struct irq_host *h, unsigned int virq,
irq_hw_number_t hw)
{
- set_irq_chip_and_handler(virq, &iseries_pic, handle_fasteoi_irq);
+ irq_set_chip_and_handler(virq, &iseries_pic, handle_fasteoi_irq);
return 0;
}
Index: linux-2.6-tip/arch/powerpc/platforms/maple/pci.c
===================================================================
--- linux-2.6-tip.orig/arch/powerpc/platforms/maple/pci.c
+++ linux-2.6-tip/arch/powerpc/platforms/maple/pci.c
@@ -498,7 +498,7 @@ void __devinit maple_pci_irq_fixup(struc
printk(KERN_DEBUG "Fixup U4 PCIe IRQ\n");
dev->irq = irq_create_mapping(NULL, 1);
if (dev->irq != NO_IRQ)
- set_irq_type(dev->irq, IRQ_TYPE_LEVEL_LOW);
+ irq_set_irq_type(dev->irq, IRQ_TYPE_LEVEL_LOW);
}
/* Hide AMD8111 IDE interrupt when in legacy mode so
Index: linux-2.6-tip/arch/powerpc/platforms/pasemi/setup.c
===================================================================
--- linux-2.6-tip.orig/arch/powerpc/platforms/pasemi/setup.c
+++ linux-2.6-tip/arch/powerpc/platforms/pasemi/setup.c
@@ -239,7 +239,7 @@ static __init void pas_init_IRQ(void)
if (nmiprop) {
nmi_virq = irq_create_mapping(NULL, *nmiprop);
mpic_irq_set_priority(nmi_virq, 15);
- set_irq_type(nmi_virq, IRQ_TYPE_EDGE_RISING);
+ irq_set_irq_type(nmi_virq, IRQ_TYPE_EDGE_RISING);
mpic_unmask_irq(irq_get_irq_data(nmi_virq));
}
Index: linux-2.6-tip/arch/powerpc/platforms/powermac/pci.c
===================================================================
--- linux-2.6-tip.orig/arch/powerpc/platforms/powermac/pci.c
+++ linux-2.6-tip/arch/powerpc/platforms/powermac/pci.c
@@ -988,7 +988,7 @@ void __devinit pmac_pci_irq_fixup(struct
dev->vendor == PCI_VENDOR_ID_DEC &&
dev->device == PCI_DEVICE_ID_DEC_TULIP_PLUS) {
dev->irq = irq_create_mapping(NULL, 60);
- set_irq_type(dev->irq, IRQ_TYPE_LEVEL_LOW);
+ irq_set_irq_type(dev->irq, IRQ_TYPE_LEVEL_LOW);
}
#endif /* CONFIG_PPC32 */
}
Index: linux-2.6-tip/arch/powerpc/platforms/powermac/pic.c
===================================================================
--- linux-2.6-tip.orig/arch/powerpc/platforms/powermac/pic.c
+++ linux-2.6-tip/arch/powerpc/platforms/powermac/pic.c
@@ -300,8 +300,8 @@ static int pmac_pic_host_map(struct irq_
level = !!(level_mask[hw >> 5] & (1UL << (hw & 0x1f)));
if (level)
irq_set_status_flags(virq, IRQ_LEVEL);
- set_irq_chip_and_handler(virq, &pmac_pic, level ?
- handle_level_irq : handle_edge_irq);
+ irq_set_chip_and_handler(virq, &pmac_pic,
+ level ? handle_level_irq : handle_edge_irq);
return 0;
}
@@ -471,8 +471,8 @@ int of_irq_map_oldworld(struct device_no
static void pmac_u3_cascade(unsigned int irq, struct irq_desc *desc)
{
- struct irq_chip *chip = get_irq_desc_chip(desc);
- struct mpic *mpic = get_irq_desc_data(desc);
+ struct irq_chip *chip = irq_desc_get_chip(desc);
+ struct mpic *mpic = irq_desc_get_handler_data(desc);
unsigned int cascade_irq = mpic_get_one_irq(mpic);
if (cascade_irq != NO_IRQ)
@@ -590,8 +590,8 @@ static int __init pmac_pic_probe_mpic(vo
of_node_put(slave);
return 0;
}
- set_irq_data(cascade, mpic2);
- set_irq_chained_handler(cascade, pmac_u3_cascade);
+ irq_set_handler_data(cascade, mpic2);
+ irq_set_chained_handler(cascade, pmac_u3_cascade);
of_node_put(slave);
return 0;
Index: linux-2.6-tip/arch/powerpc/platforms/ps3/interrupt.c
===================================================================
--- linux-2.6-tip.orig/arch/powerpc/platforms/ps3/interrupt.c
+++ linux-2.6-tip/arch/powerpc/platforms/ps3/interrupt.c
@@ -194,7 +194,7 @@ static int ps3_virq_setup(enum ps3_cpu_b
pr_debug("%s:%d: outlet %lu => cpu %u, virq %u\n", __func__, __LINE__,
outlet, cpu, *virq);
- result = set_irq_chip_data(*virq, pd);
+ result = irq_set_chip_data(*virq, pd);
if (result) {
pr_debug("%s:%d: set_irq_chip_data failed\n",
@@ -221,12 +221,12 @@ fail_create:
static int ps3_virq_destroy(unsigned int virq)
{
- const struct ps3_private *pd = get_irq_chip_data(virq);
+ const struct ps3_private *pd = irq_get_chip_data(virq);
pr_debug("%s:%d: ppe_id %llu, thread_id %llu, virq %u\n", __func__,
__LINE__, pd->ppe_id, pd->thread_id, virq);
- set_irq_chip_data(virq, NULL);
+ irq_set_chip_data(virq, NULL);
irq_dispose_mapping(virq);
pr_debug("%s:%d <-\n", __func__, __LINE__);
@@ -256,7 +256,7 @@ int ps3_irq_plug_setup(enum ps3_cpu_bind
goto fail_setup;
}
- pd = get_irq_chip_data(*virq);
+ pd = irq_get_chip_data(*virq);
/* Binds outlet to cpu + virq. */
@@ -291,7 +291,7 @@ EXPORT_SYMBOL_GPL(ps3_irq_plug_setup);
int ps3_irq_plug_destroy(unsigned int virq)
{
int result;
- const struct ps3_private *pd = get_irq_chip_data(virq);
+ const struct ps3_private *pd = irq_get_chip_data(virq);
pr_debug("%s:%d: ppe_id %llu, thread_id %llu, virq %u\n", __func__,
__LINE__, pd->ppe_id, pd->thread_id, virq);
@@ -661,7 +661,7 @@ static void dump_bmp(struct ps3_private*
static void ps3_host_unmap(struct irq_host *h, unsigned int virq)
{
- set_irq_chip_data(virq, NULL);
+ irq_set_chip_data(virq, NULL);
}
static int ps3_host_map(struct irq_host *h, unsigned int virq,
@@ -670,7 +670,7 @@ static int ps3_host_map(struct irq_host
pr_debug("%s:%d: hwirq %lu, virq %u\n", __func__, __LINE__, hwirq,
virq);
- set_irq_chip_and_handler(virq, &ps3_irq_chip, handle_fasteoi_irq);
+ irq_set_chip_and_handler(virq, &ps3_irq_chip, handle_fasteoi_irq);
return 0;
}
Index: linux-2.6-tip/arch/powerpc/platforms/pseries/msi.c
===================================================================
--- linux-2.6-tip.orig/arch/powerpc/platforms/pseries/msi.c
+++ linux-2.6-tip/arch/powerpc/platforms/pseries/msi.c
@@ -137,7 +137,7 @@ static void rtas_teardown_msi_irqs(struc
if (entry->irq == NO_IRQ)
continue;
- set_irq_msi(entry->irq, NULL);
+ irq_set_msi_desc(entry->irq, NULL);
irq_dispose_mapping(entry->irq);
}
@@ -437,7 +437,7 @@ static int rtas_setup_msi_irqs(struct pc
}
dev_dbg(&pdev->dev, "rtas_msi: allocated virq %d\n", virq);
- set_irq_msi(virq, entry);
+ irq_set_msi_desc(virq, entry);
/* Read config space back so we can restore after reset */
read_msi_msg(virq, &msg);
Index: linux-2.6-tip/arch/powerpc/platforms/pseries/setup.c
===================================================================
--- linux-2.6-tip.orig/arch/powerpc/platforms/pseries/setup.c
+++ linux-2.6-tip/arch/powerpc/platforms/pseries/setup.c
@@ -114,7 +114,7 @@ static void __init fwnmi_init(void)
static void pseries_8259_cascade(unsigned int irq, struct irq_desc *desc)
{
- struct irq_chip *chip = get_irq_desc_chip(desc);
+ struct irq_chip *chip = irq_desc_get_chip(desc);
unsigned int cascade_irq = i8259_irq();
if (cascade_irq != NO_IRQ)
@@ -169,7 +169,7 @@ static void __init pseries_setup_i8259_c
printk(KERN_DEBUG "pic: PCI 8259 intack at 0x%016lx\n", intack);
i8259_init(found, intack);
of_node_put(found);
- set_irq_chained_handler(cascade, pseries_8259_cascade);
+ irq_set_chained_handler(cascade, pseries_8259_cascade);
}
static void __init pseries_mpic_init_IRQ(void)
Index: linux-2.6-tip/arch/powerpc/platforms/pseries/xics.c
===================================================================
--- linux-2.6-tip.orig/arch/powerpc/platforms/pseries/xics.c
+++ linux-2.6-tip/arch/powerpc/platforms/pseries/xics.c
@@ -471,7 +471,7 @@ static int xics_host_map(struct irq_host
irq_radix_revmap_insert(xics_host, virq, hw);
irq_set_status_flags(virq, IRQ_LEVEL);
- set_irq_chip_and_handler(virq, xics_irq_chip, handle_fasteoi_irq);
+ irq_set_chip_and_handler(virq, xics_irq_chip, handle_fasteoi_irq);
return 0;
}
@@ -600,7 +600,7 @@ static void xics_request_ipi(void)
* IPIs are marked IRQF_DISABLED as they must run with irqs
* disabled
*/
- set_irq_handler(ipi, handle_percpu_irq);
+ irq_set_handler(ipi, handle_percpu_irq);
if (firmware_has_feature(FW_FEATURE_LPAR))
rc = request_irq(ipi, xics_ipi_action_lpar,
IRQF_DISABLED|IRQF_PERCPU, "IPI", NULL);
@@ -912,7 +912,7 @@ void xics_migrate_irqs_away(void)
if (desc == NULL || desc->action == NULL)
continue;
- chip = get_irq_desc_chip(desc);
+ chip = irq_desc_get_chip(desc);
if (chip == NULL || chip->irq_set_affinity == NULL)
continue;
Index: linux-2.6-tip/arch/powerpc/sysdev/cpm1.c
===================================================================
--- linux-2.6-tip.orig/arch/powerpc/sysdev/cpm1.c
+++ linux-2.6-tip/arch/powerpc/sysdev/cpm1.c
@@ -104,7 +104,7 @@ static int cpm_pic_host_map(struct irq_h
pr_debug("cpm_pic_host_map(%d, 0x%lx)\n", virq, hw);
irq_set_status_flags(virq, IRQ_LEVEL);
- set_irq_chip_and_handler(virq, &cpm_pic, handle_fasteoi_irq);
+ irq_set_chip_and_handler(virq, &cpm_pic, handle_fasteoi_irq);
return 0;
}
Index: linux-2.6-tip/arch/powerpc/sysdev/cpm2_pic.c
===================================================================
--- linux-2.6-tip.orig/arch/powerpc/sysdev/cpm2_pic.c
+++ linux-2.6-tip/arch/powerpc/sysdev/cpm2_pic.c
@@ -157,9 +157,9 @@ static int cpm2_set_irq_type(struct irq_
irqd_set_trigger_type(d, flow_type);
if (flow_type & IRQ_TYPE_LEVEL_LOW)
- __set_irq_handler_unlocked(d->irq, handle_level_irq);
+ __irq_set_handler_locked(d->irq, handle_level_irq);
else
- __set_irq_handler_unlocked(d->irq, handle_edge_irq);
+ __irq_set_handler_locked(d->irq, handle_edge_irq);
/* internal IRQ senses are LEVEL_LOW
* EXT IRQ and Port C IRQ senses are programmable
@@ -220,7 +220,7 @@ static int cpm2_pic_host_map(struct irq_
pr_debug("cpm2_pic_host_map(%d, 0x%lx)\n", virq, hw);
irq_set_status_flags(virq, IRQ_LEVEL);
- set_irq_chip_and_handler(virq, &cpm2_pic, handle_level_irq);
+ irq_set_chip_and_handler(virq, &cpm2_pic, handle_level_irq);
return 0;
}
Index: linux-2.6-tip/arch/powerpc/sysdev/fsl_msi.c
===================================================================
--- linux-2.6-tip.orig/arch/powerpc/sysdev/fsl_msi.c
+++ linux-2.6-tip/arch/powerpc/sysdev/fsl_msi.c
@@ -66,8 +66,8 @@ static int fsl_msi_host_map(struct irq_h
irq_set_status_flags(virq, IRQ_TYPE_EDGE_FALLING);
- set_irq_chip_data(virq, msi_data);
- set_irq_chip_and_handler(virq, chip, handle_edge_irq);
+ irq_set_chip_data(virq, msi_data);
+ irq_set_chip_and_handler(virq, chip, handle_edge_irq);
return 0;
}
@@ -110,8 +110,8 @@ static void fsl_teardown_msi_irqs(struct
list_for_each_entry(entry, &pdev->msi_list, list) {
if (entry->irq == NO_IRQ)
continue;
- msi_data = get_irq_data(entry->irq);
- set_irq_msi(entry->irq, NULL);
+ msi_data = irq_get_handler_data(entry->irq);
+ irq_set_msi_desc(entry->irq, NULL);
msi_bitmap_free_hwirqs(&msi_data->bitmap,
virq_to_hw(entry->irq), 1);
irq_dispose_mapping(entry->irq);
@@ -168,8 +168,8 @@ static int fsl_setup_msi_irqs(struct pci
rc = -ENOSPC;
goto out_free;
}
- set_irq_data(virq, msi_data);
- set_irq_msi(virq, entry);
+ irq_set_handler_data(virq, msi_data);
+ irq_set_msi_desc(virq, entry);
fsl_compose_msi_msg(pdev, hwirq, &msg, msi_data);
write_msi_msg(virq, &msg);
@@ -183,7 +183,7 @@ out_free:
static void fsl_msi_cascade(unsigned int irq, struct irq_desc *desc)
{
- struct irq_chip *chip = get_irq_desc_chip(desc);
+ struct irq_chip *chip = irq_desc_get_chip(desc);
unsigned int cascade_irq;
struct fsl_msi *msi_data;
int msir_index = -1;
@@ -192,7 +192,7 @@ static void fsl_msi_cascade(unsigned int
u32 have_shift = 0;
struct fsl_msi_cascade_data *cascade_data;
- cascade_data = (struct fsl_msi_cascade_data *)get_irq_data(irq);
+ cascade_data = (struct fsl_msi_cascade_data *)irq_get_handler_data(irq);
msi_data = cascade_data->msi_data;
raw_spin_lock(&desc->lock);
@@ -261,7 +261,7 @@ static int fsl_of_msi_remove(struct plat
for (i = 0; i < NR_MSI_REG; i++) {
virq = msi->msi_virqs[i];
if (virq != NO_IRQ) {
- cascade_data = get_irq_data(virq);
+ cascade_data = irq_get_handler_data(virq);
kfree(cascade_data);
irq_dispose_mapping(virq);
}
@@ -297,8 +297,8 @@ static int __devinit fsl_msi_setup_hwirq
msi->msi_virqs[irq_index] = virt_msir;
cascade_data->index = offset + irq_index;
cascade_data->msi_data = msi;
- set_irq_data(virt_msir, cascade_data);
- set_irq_chained_handler(virt_msir, fsl_msi_cascade);
+ irq_set_handler_data(virt_msir, cascade_data);
+ irq_set_chained_handler(virt_msir, fsl_msi_cascade);
return 0;
}
Index: linux-2.6-tip/arch/powerpc/sysdev/i8259.c
===================================================================
--- linux-2.6-tip.orig/arch/powerpc/sysdev/i8259.c
+++ linux-2.6-tip/arch/powerpc/sysdev/i8259.c
@@ -181,7 +181,7 @@ static int i8259_host_map(struct irq_hos
* be more cautious here but that works for now
*/
irq_set_status_flags(virq, IRQ_LEVEL);
- set_irq_chip_and_handler(virq, &i8259_pic, handle_level_irq);
+ irq_set_chip_and_handler(virq, &i8259_pic, handle_level_irq);
return 0;
}
@@ -191,7 +191,7 @@ static void i8259_host_unmap(struct irq_
i8259_mask_irq(irq_get_irq_data(virq));
/* remove chip and handler */
- set_irq_chip_and_handler(virq, NULL, NULL);
+ irq_set_chip_and_handler(virq, NULL, NULL);
/* Make sure it's completed */
synchronize_irq(virq);
Index: linux-2.6-tip/arch/powerpc/sysdev/ipic.c
===================================================================
--- linux-2.6-tip.orig/arch/powerpc/sysdev/ipic.c
+++ linux-2.6-tip/arch/powerpc/sysdev/ipic.c
@@ -685,11 +685,11 @@ static int ipic_host_map(struct irq_host
{
struct ipic *ipic = h->host_data;
- set_irq_chip_data(virq, ipic);
- set_irq_chip_and_handler(virq, &ipic_level_irq_chip, handle_level_irq);
+ irq_set_chip_data(virq, ipic);
+ irq_set_chip_and_handler(virq, &ipic_level_irq_chip, handle_level_irq);
/* Set default irq type */
- set_irq_type(virq, IRQ_TYPE_NONE);
+ irq_set_irq_type(virq, IRQ_TYPE_NONE);
return 0;
}
Index: linux-2.6-tip/arch/powerpc/sysdev/mpc8xx_pic.c
===================================================================
--- linux-2.6-tip.orig/arch/powerpc/sysdev/mpc8xx_pic.c
+++ linux-2.6-tip/arch/powerpc/sysdev/mpc8xx_pic.c
@@ -80,7 +80,7 @@ static int mpc8xx_set_irq_type(struct ir
if ((hw & 1) == 0) {
siel |= (0x80000000 >> hw);
out_be32(&siu_reg->sc_siel, siel);
- __set_irq_handler_unlocked(irq, handle_edge_irq);
+ __irq_set_handler_locked(irq, handle_edge_irq);
}
}
return 0;
@@ -117,7 +117,7 @@ static int mpc8xx_pic_host_map(struct ir
pr_debug("mpc8xx_pic_host_map(%d, 0x%lx)\n", virq, hw);
/* Set default irq handle */
- set_irq_chip_and_handler(virq, &mpc8xx_pic, handle_level_irq);
+ irq_set_chip_and_handler(virq, &mpc8xx_pic, handle_level_irq);
return 0;
}
Index: linux-2.6-tip/arch/powerpc/sysdev/mpc8xxx_gpio.c
===================================================================
--- linux-2.6-tip.orig/arch/powerpc/sysdev/mpc8xxx_gpio.c
+++ linux-2.6-tip/arch/powerpc/sysdev/mpc8xxx_gpio.c
@@ -145,7 +145,7 @@ static int mpc8xxx_gpio_to_irq(struct gp
static void mpc8xxx_gpio_irq_cascade(unsigned int irq, struct irq_desc *desc)
{
- struct mpc8xxx_gpio_chip *mpc8xxx_gc = get_irq_desc_data(desc);
+ struct mpc8xxx_gpio_chip *mpc8xxx_gc = irq_desc_get_handler_data(desc);
struct of_mm_gpio_chip *mm = &mpc8xxx_gc->mm_gc;
unsigned int mask;
@@ -278,9 +278,9 @@ static int mpc8xxx_gpio_irq_map(struct i
if (mpc8xxx_gc->of_dev_id_data)
mpc8xxx_irq_chip.irq_set_type = mpc8xxx_gc->of_dev_id_data;
- set_irq_chip_data(virq, h->host_data);
- set_irq_chip_and_handler(virq, &mpc8xxx_irq_chip, handle_level_irq);
- set_irq_type(virq, IRQ_TYPE_NONE);
+ irq_set_chip_data(virq, h->host_data);
+ irq_set_chip_and_handler(virq, &mpc8xxx_irq_chip, handle_level_irq);
+ irq_set_irq_type(virq, IRQ_TYPE_NONE);
return 0;
}
@@ -369,8 +369,8 @@ static void __init mpc8xxx_add_controlle
out_be32(mm_gc->regs + GPIO_IER, 0xffffffff);
out_be32(mm_gc->regs + GPIO_IMR, 0);
- set_irq_data(hwirq, mpc8xxx_gc);
- set_irq_chained_handler(hwirq, mpc8xxx_gpio_irq_cascade);
+ irq_set_handler_data(hwirq, mpc8xxx_gc);
+ irq_set_chained_handler(hwirq, mpc8xxx_gpio_irq_cascade);
skip_irq:
return;
Index: linux-2.6-tip/arch/powerpc/sysdev/mpic.c
===================================================================
--- linux-2.6-tip.orig/arch/powerpc/sysdev/mpic.c
+++ linux-2.6-tip/arch/powerpc/sysdev/mpic.c
@@ -615,7 +615,7 @@ static struct mpic *mpic_find(unsigned i
if (irq < NUM_ISA_INTERRUPTS)
return NULL;
- return get_irq_chip_data(irq);
+ return irq_get_chip_data(irq);
}
/* Determine if the linux irq is an IPI */
@@ -649,7 +649,7 @@ static inline struct mpic * mpic_from_ip
/* Get the mpic structure from the irq number */
static inline struct mpic * mpic_from_irq(unsigned int irq)
{
- return get_irq_chip_data(irq);
+ return irq_get_chip_data(irq);
}
/* Get the mpic structure from the irq data */
@@ -978,8 +978,8 @@ static int mpic_host_map(struct irq_host
WARN_ON(!(mpic->flags & MPIC_PRIMARY));
DBG("mpic: mapping as IPI\n");
- set_irq_chip_data(virq, mpic);
- set_irq_chip_and_handler(virq, &mpic->hc_ipi,
+ irq_set_chip_data(virq, mpic);
+ irq_set_chip_and_handler(virq, &mpic->hc_ipi,
handle_percpu_irq);
return 0;
}
@@ -1001,11 +1001,11 @@ static int mpic_host_map(struct irq_host
DBG("mpic: mapping to irq chip @%p\n", chip);
- set_irq_chip_data(virq, mpic);
- set_irq_chip_and_handler(virq, chip, handle_fasteoi_irq);
+ irq_set_chip_data(virq, mpic);
+ irq_set_chip_and_handler(virq, chip, handle_fasteoi_irq);
/* Set default irq type */
- set_irq_type(virq, IRQ_TYPE_NONE);
+ irq_set_irq_type(virq, IRQ_TYPE_NONE);
/* If the MPIC was reset, then all vectors have already been
* initialized. Otherwise, a per source lazy initialization
Index: linux-2.6-tip/arch/powerpc/sysdev/mpic_pasemi_msi.c
===================================================================
--- linux-2.6-tip.orig/arch/powerpc/sysdev/mpic_pasemi_msi.c
+++ linux-2.6-tip/arch/powerpc/sysdev/mpic_pasemi_msi.c
@@ -81,7 +81,7 @@ static void pasemi_msi_teardown_msi_irqs
if (entry->irq == NO_IRQ)
continue;
- set_irq_msi(entry->irq, NULL);
+ irq_set_msi_desc(entry->irq, NULL);
msi_bitmap_free_hwirqs(&msi_mpic->msi_bitmap,
virq_to_hw(entry->irq), ALLOC_CHUNK);
irq_dispose_mapping(entry->irq);
@@ -131,9 +131,9 @@ static int pasemi_msi_setup_msi_irqs(str
*/
mpic_set_vector(virq, 0);
- set_irq_msi(virq, entry);
- set_irq_chip(virq, &mpic_pasemi_msi_chip);
- set_irq_type(virq, IRQ_TYPE_EDGE_RISING);
+ irq_set_msi_desc(virq, entry);
+ irq_set_chip(virq, &mpic_pasemi_msi_chip);
+ irq_set_irq_type(virq, IRQ_TYPE_EDGE_RISING);
pr_debug("pasemi_msi: allocated virq 0x%x (hw 0x%x) " \
"addr 0x%x\n", virq, hwirq, msg.address_lo);
Index: linux-2.6-tip/arch/powerpc/sysdev/mpic_u3msi.c
===================================================================
--- linux-2.6-tip.orig/arch/powerpc/sysdev/mpic_u3msi.c
+++ linux-2.6-tip/arch/powerpc/sysdev/mpic_u3msi.c
@@ -129,7 +129,7 @@ static void u3msi_teardown_msi_irqs(stru
if (entry->irq == NO_IRQ)
continue;
- set_irq_msi(entry->irq, NULL);
+ irq_set_msi_desc(entry->irq, NULL);
msi_bitmap_free_hwirqs(&msi_mpic->msi_bitmap,
virq_to_hw(entry->irq), 1);
irq_dispose_mapping(entry->irq);
@@ -166,9 +166,9 @@ static int u3msi_setup_msi_irqs(struct p
return -ENOSPC;
}
- set_irq_msi(virq, entry);
- set_irq_chip(virq, &mpic_u3msi_chip);
- set_irq_type(virq, IRQ_TYPE_EDGE_RISING);
+ irq_set_msi_desc(virq, entry);
+ irq_set_chip(virq, &mpic_u3msi_chip);
+ irq_set_irq_type(virq, IRQ_TYPE_EDGE_RISING);
pr_debug("u3msi: allocated virq 0x%x (hw 0x%x) addr 0x%lx\n",
virq, hwirq, (unsigned long)addr);
Index: linux-2.6-tip/arch/powerpc/sysdev/mv64x60_pic.c
===================================================================
--- linux-2.6-tip.orig/arch/powerpc/sysdev/mv64x60_pic.c
+++ linux-2.6-tip/arch/powerpc/sysdev/mv64x60_pic.c
@@ -217,7 +217,8 @@ static int mv64x60_host_map(struct irq_h
level1 = (hwirq & MV64x60_LEVEL1_MASK) >> MV64x60_LEVEL1_OFFSET;
BUG_ON(level1 > MV64x60_LEVEL1_GPP);
- set_irq_chip_and_handler(virq, mv64x60_chips[level1], handle_level_irq);
+ irq_set_chip_and_handler(virq, mv64x60_chips[level1],
+ handle_level_irq);
return 0;
}
Index: linux-2.6-tip/arch/powerpc/sysdev/qe_lib/qe_ic.c
===================================================================
--- linux-2.6-tip.orig/arch/powerpc/sysdev/qe_lib/qe_ic.c
+++ linux-2.6-tip/arch/powerpc/sysdev/qe_lib/qe_ic.c
@@ -189,7 +189,7 @@ static inline void qe_ic_write(volatile
static inline struct qe_ic *qe_ic_from_irq(unsigned int virq)
{
- return get_irq_chip_data(virq);
+ return irq_get_chip_data(virq);
}
static inline struct qe_ic *qe_ic_from_irq_data(struct irq_data *d)
@@ -267,10 +267,10 @@ static int qe_ic_host_map(struct irq_hos
/* Default chip */
chip = &qe_ic->hc_irq;
- set_irq_chip_data(virq, qe_ic);
+ irq_set_chip_data(virq, qe_ic);
irq_set_status_flags(virq, IRQ_LEVEL);
- set_irq_chip_and_handler(virq, chip, handle_level_irq);
+ irq_set_chip_and_handler(virq, chip, handle_level_irq);
return 0;
}
@@ -386,13 +386,13 @@ void __init qe_ic_init(struct device_nod
qe_ic_write(qe_ic->regs, QEIC_CICR, temp);
- set_irq_data(qe_ic->virq_low, qe_ic);
- set_irq_chained_handler(qe_ic->virq_low, low_handler);
+ irq_set_handler_data(qe_ic->virq_low, qe_ic);
+ irq_set_chained_handler(qe_ic->virq_low, low_handler);
if (qe_ic->virq_high != NO_IRQ &&
qe_ic->virq_high != qe_ic->virq_low) {
- set_irq_data(qe_ic->virq_high, qe_ic);
- set_irq_chained_handler(qe_ic->virq_high, high_handler);
+ irq_set_handler_data(qe_ic->virq_high, qe_ic);
+ irq_set_chained_handler(qe_ic->virq_high, high_handler);
}
}
Index: linux-2.6-tip/arch/powerpc/sysdev/tsi108_pci.c
===================================================================
--- linux-2.6-tip.orig/arch/powerpc/sysdev/tsi108_pci.c
+++ linux-2.6-tip/arch/powerpc/sysdev/tsi108_pci.c
@@ -392,7 +392,7 @@ static int pci_irq_host_map(struct irq_h
if ((virq >= 1) && (virq <= 4)){
irq = virq + IRQ_PCI_INTAD_BASE - 1;
irq_set_status_flags(irq, IRQ_LEVEL);
- set_irq_chip(irq, &tsi108_pci_irq);
+ irq_set_chip(irq, &tsi108_pci_irq);
}
return 0;
}
@@ -431,7 +431,7 @@ void __init tsi108_pci_int_init(struct d
void tsi108_irq_cascade(unsigned int irq, struct irq_desc *desc)
{
- struct irq_chip *chip = get_irq_desc_chip(desc);
+ struct irq_chip *chip = irq_desc_get_chip(desc);
unsigned int cascade_irq = get_pci_source();
if (cascade_irq != NO_IRQ)
Index: linux-2.6-tip/arch/powerpc/sysdev/uic.c
===================================================================
--- linux-2.6-tip.orig/arch/powerpc/sysdev/uic.c
+++ linux-2.6-tip/arch/powerpc/sysdev/uic.c
@@ -182,13 +182,13 @@ static int uic_host_map(struct irq_host
{
struct uic *uic = h->host_data;
- set_irq_chip_data(virq, uic);
+ irq_set_chip_data(virq, uic);
/* Despite the name, handle_level_irq() works for both level
* and edge irqs on UIC. FIXME: check this is correct */
- set_irq_chip_and_handler(virq, &uic_irq_chip, handle_level_irq);
+ irq_set_chip_and_handler(virq, &uic_irq_chip, handle_level_irq);
/* Set default irq type */
- set_irq_type(virq, IRQ_TYPE_NONE);
+ irq_set_irq_type(virq, IRQ_TYPE_NONE);
return 0;
}
@@ -212,9 +212,9 @@ static struct irq_host_ops uic_host_ops
void uic_irq_cascade(unsigned int virq, struct irq_desc *desc)
{
- struct irq_chip *chip = get_irq_desc_chip(desc);
+ struct irq_chip *chip = irq_desc_get_chip(desc);
struct irq_data *idata = irq_desc_get_irq_data(desc);
- struct uic *uic = get_irq_data(virq);
+ struct uic *uic = irq_get_handler_data(virq);
u32 msr;
int src;
int subvirq;
@@ -329,8 +329,8 @@ void __init uic_init_tree(void)
cascade_virq = irq_of_parse_and_map(np, 0);
- set_irq_data(cascade_virq, uic);
- set_irq_chained_handler(cascade_virq, uic_irq_cascade);
+ irq_set_handler_data(cascade_virq, uic);
+ irq_set_chained_handler(cascade_virq, uic_irq_cascade);
/* FIXME: setup critical cascade?? */
}
Index: linux-2.6-tip/arch/powerpc/sysdev/xilinx_intc.c
===================================================================
--- linux-2.6-tip.orig/arch/powerpc/sysdev/xilinx_intc.c
+++ linux-2.6-tip/arch/powerpc/sysdev/xilinx_intc.c
@@ -164,15 +164,15 @@ static int xilinx_intc_xlate(struct irq_
static int xilinx_intc_map(struct irq_host *h, unsigned int virq,
irq_hw_number_t irq)
{
- set_irq_chip_data(virq, h->host_data);
+ irq_set_chip_data(virq, h->host_data);
if (xilinx_intc_typetable[irq] == IRQ_TYPE_LEVEL_HIGH ||
xilinx_intc_typetable[irq] == IRQ_TYPE_LEVEL_LOW) {
- set_irq_chip_and_handler(virq, &xilinx_intc_level_irqchip,
- handle_level_irq);
+ irq_set_chip_and_handler(virq, &xilinx_intc_level_irqchip,
+ handle_level_irq);
} else {
- set_irq_chip_and_handler(virq, &xilinx_intc_edge_irqchip,
- handle_edge_irq);
+ irq_set_chip_and_handler(virq, &xilinx_intc_edge_irqchip,
+ handle_edge_irq);
}
return 0;
}
@@ -223,7 +223,7 @@ int xilinx_intc_get_irq(void)
*/
static void xilinx_i8259_cascade(unsigned int irq, struct irq_desc *desc)
{
- struct irq_chip *chip = get_irq_desc_chip(desc);
+ struct irq_chip *chip = irq_desc_get_chip(desc);
unsigned int cascade_irq = i8259_irq();
if (cascade_irq)
@@ -250,7 +250,7 @@ static void __init xilinx_i8259_setup_ca
}
i8259_init(cascade_node, 0);
- set_irq_chained_handler(cascade_irq, xilinx_i8259_cascade);
+ irq_set_chained_handler(cascade_irq, xilinx_i8259_cascade);
/* Program irq 7 (usb/audio), 14/15 (ide) to level sensitive */
/* This looks like a dirty hack to me --gcl */
^ permalink raw reply
* [patch 12/14] powerpc: irq: Use irqdata based information
From: Thomas Gleixner @ 2011-03-25 21:36 UTC (permalink / raw)
To: Benjamin Herrenschmidt; +Cc: Lennert Buytenhek, linuxppc-dev
In-Reply-To: <20110325164049.138289403@linutronix.de>
We want to tighten the irq_desc access. So use the new accessors for
the same information.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
arch/powerpc/kernel/irq.c | 17 +++++++++--------
1 file changed, 9 insertions(+), 8 deletions(-)
Index: linux-2.6-tip/arch/powerpc/kernel/irq.c
===================================================================
--- linux-2.6-tip.orig/arch/powerpc/kernel/irq.c
+++ linux-2.6-tip/arch/powerpc/kernel/irq.c
@@ -276,7 +276,7 @@ int show_interrupts(struct seq_file *p,
seq_printf(p, " %-16s", chip->name);
else
seq_printf(p, " %-16s", "None");
- seq_printf(p, " %-8s", (desc->status & IRQ_LEVEL) ? "Level" : "Edge");
+ seq_printf(p, " %-8s", (irqd_is_level_type(&desc->irq_data) ? "Level" : "Edge");
if (action) {
seq_printf(p, " %s", action->name);
@@ -315,24 +315,25 @@ void fixup_irqs(const struct cpumask *ma
alloc_cpumask_var(&mask, GFP_KERNEL);
for_each_irq(irq) {
+ struct irq_data *data;
struct irq_chip *chip;
- desc = irq_to_desc(irq);
- if (!desc)
+ data = irq_get_irq_data(irq);
+ if (!data)
continue;
- if (desc->status & IRQ_PER_CPU)
+ if (irqd_is_per_cpu(data))
continue;
- chip = get_irq_desc_chip(desc);
+ chip = irq_data_get_chip(data);
- cpumask_and(mask, desc->irq_data.affinity, map);
+ cpumask_and(mask, data->affinity, map);
if (cpumask_any(mask) >= nr_cpu_ids) {
printk("Breaking affinity for irq %i\n", irq);
cpumask_copy(mask, map);
}
if (chip->irq_set_affinity)
- chip->irq_set_affinity(&desc->irq_data, mask, true);
+ chip->irq_set_affinity(data, mask, true);
else if (desc->action && !(warned++))
printk("Cannot set affinity for irq %i\n", irq);
}
@@ -827,7 +828,7 @@ unsigned int irq_create_of_mapping(struc
/* Set type if specified and different than the current one */
if (type != IRQ_TYPE_NONE &&
- type != (irq_to_desc(virq)->status & IRQF_TRIGGER_MASK))
+ type != (irqd_get_trigger_type(irq_get_irq_data(virq))))
set_irq_type(virq, type);
return virq;
}
^ permalink raw reply
* [patch 00/14] powerpc: Final irq bits for .39
From: Thomas Gleixner @ 2011-03-25 21:36 UTC (permalink / raw)
To: Benjamin Herrenschmidt; +Cc: Lennert Buytenhek, linuxppc-dev
Ben,
the following series cleans up the remaining odds and ends of the
powerpc irq code. It further contains a coccinelle scripted conversion of
the irq functions to the new naming convention irq_*.
The last patch which makes power switch to the generic
show_interrupts() code selects GENERIC_IRQ_SHOW_LEVEL which has not
yet hit Linus tree, but should tonight.
Thanks,
tglx
Kconfig | 2
kernel/irq.c | 84 +++++------------------------------
kernel/machine_kexec.c | 2
kernel/pci-common.c | 2
platforms/512x/mpc5121_ads_cpld.c | 6 +-
platforms/52xx/media5200.c | 17 ++-----
platforms/52xx/mpc52xx_gpt.c | 10 ++--
platforms/52xx/mpc52xx_pic.c | 6 +-
platforms/82xx/pq2ads-pci-pic.c | 16 +++---
platforms/85xx/ksi8560.c | 4 -
platforms/85xx/mpc85xx_ads.c | 4 -
platforms/85xx/mpc85xx_cds.c | 2
platforms/85xx/mpc85xx_ds.c | 4 -
platforms/85xx/sbc8560.c | 4 -
platforms/85xx/socrates_fpga_pic.c | 12 ++---
platforms/85xx/stx_gp3.c | 4 -
platforms/85xx/tqm85xx.c | 4 -
platforms/86xx/gef_pic.c | 8 +--
platforms/86xx/pic.c | 4 -
platforms/8xx/m8xx_setup.c | 6 +-
platforms/cell/axon_msi.c | 14 ++---
platforms/cell/beat_interrupt.c | 5 --
platforms/cell/interrupt.c | 16 +++---
platforms/cell/setup.c | 8 +--
platforms/cell/spider-pic.c | 21 ++------
platforms/chrp/setup.c | 4 -
platforms/embedded6xx/flipper-pic.c | 10 ++--
platforms/embedded6xx/hlwd-pic.c | 18 +++----
platforms/embedded6xx/holly.c | 4 -
platforms/embedded6xx/mpc7448_hpc2.c | 4 -
platforms/iseries/irq.c | 4 -
platforms/maple/pci.c | 2
platforms/pasemi/setup.c | 2
platforms/powermac/pci.c | 2
platforms/powermac/pic.c | 17 +++----
platforms/ps3/interrupt.c | 14 ++---
platforms/pseries/msi.c | 4 -
platforms/pseries/setup.c | 4 -
platforms/pseries/xics.c | 8 +--
sysdev/cpm1.c | 4 -
sysdev/cpm2_pic.c | 51 +++++++++------------
sysdev/fsl_msi.c | 24 +++++-----
sysdev/i8259.c | 8 +--
sysdev/ipic.c | 22 ++++-----
sysdev/mpc8xx_pic.c | 11 ----
sysdev/mpc8xxx_gpio.c | 12 ++---
sysdev/mpic.c | 43 +++++++----------
sysdev/mpic_pasemi_msi.c | 8 +--
sysdev/mpic_u3msi.c | 8 +--
sysdev/mv64x60_pic.c | 5 +-
sysdev/qe_lib/qe_ic.c | 16 +++---
sysdev/tsi108_pci.c | 6 +-
sysdev/uic.c | 39 ++++++----------
sysdev/xilinx_intc.c | 20 ++------
54 files changed, 268 insertions(+), 371 deletions(-)
^ permalink raw reply
* [patch 02/14] powerpc: media5200: Remove pointless set_irq_type()
From: Thomas Gleixner @ 2011-03-25 21:36 UTC (permalink / raw)
To: Benjamin Herrenschmidt; +Cc: Lennert Buytenhek, linuxppc-dev
In-Reply-To: <20110325164049.138289403@linutronix.de>
The irq chip has no irq_set_type() callback. So calling the call is
pointless. Set IRQ_LEVEL via the proper accessor.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
arch/powerpc/platforms/52xx/media5200.c | 7 +------
1 file changed, 1 insertion(+), 6 deletions(-)
Index: linux-2.6-tip/arch/powerpc/platforms/52xx/media5200.c
===================================================================
--- linux-2.6-tip.orig/arch/powerpc/platforms/52xx/media5200.c
+++ linux-2.6-tip/arch/powerpc/platforms/52xx/media5200.c
@@ -115,15 +115,10 @@ void media5200_irq_cascade(unsigned int
static int media5200_irq_map(struct irq_host *h, unsigned int virq,
irq_hw_number_t hw)
{
- struct irq_desc *desc = irq_to_desc(virq);
-
pr_debug("%s: h=%p, virq=%i, hwirq=%i\n", __func__, h, virq, (int)hw);
set_irq_chip_data(virq, &media5200_irq);
set_irq_chip_and_handler(virq, &media5200_irq_chip, handle_level_irq);
- set_irq_type(virq, IRQ_TYPE_LEVEL_LOW);
- desc->status &= ~(IRQ_TYPE_SENSE_MASK | IRQ_LEVEL);
- desc->status |= IRQ_TYPE_LEVEL_LOW | IRQ_LEVEL;
-
+ irq_set_status_flags(virq, IRQ_LEVEL);
return 0;
}
^ permalink raw reply
* [patch 04/14] powerpc: cell: Fix the irq_desc access
From: Thomas Gleixner @ 2011-03-25 21:36 UTC (permalink / raw)
To: Benjamin Herrenschmidt; +Cc: Lennert Buytenhek, linuxppc-dev
In-Reply-To: <20110325164049.138289403@linutronix.de>
The core irq_set_type() function updates the flow type when the chip
callback returns 0. It also updates irq_data, so this can be used in
irq_ack() to check for the level bit. That avoids a redundant sparse
irq lookup.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
arch/powerpc/platforms/cell/spider-pic.c | 9 +--------
1 file changed, 1 insertion(+), 8 deletions(-)
Index: linux-2.6-tip/arch/powerpc/platforms/cell/spider-pic.c
===================================================================
--- linux-2.6-tip.orig/arch/powerpc/platforms/cell/spider-pic.c
+++ linux-2.6-tip/arch/powerpc/platforms/cell/spider-pic.c
@@ -102,7 +102,7 @@ static void spider_ack_irq(struct irq_da
/* Reset edge detection logic if necessary
*/
- if (irq_to_desc(d->irq)->status & IRQ_LEVEL)
+ if (irqd_is_level_type(d))
return;
/* Only interrupts 47 to 50 can be set to edge */
@@ -119,7 +119,6 @@ static int spider_set_irq_type(struct ir
struct spider_pic *pic = spider_virq_to_pic(d->irq);
unsigned int hw = irq_map[d->irq].hwirq;
void __iomem *cfg = spider_get_irq_config(pic, hw);
- struct irq_desc *desc = irq_to_desc(d->irq);
u32 old_mask;
u32 ic;
@@ -147,12 +146,6 @@ static int spider_set_irq_type(struct ir
return -EINVAL;
}
- /* Update irq_desc */
- desc->status &= ~(IRQ_TYPE_SENSE_MASK | IRQ_LEVEL);
- desc->status |= type & IRQ_TYPE_SENSE_MASK;
- if (type & (IRQ_TYPE_LEVEL_HIGH | IRQ_TYPE_LEVEL_LOW))
- desc->status |= IRQ_LEVEL;
-
/* Configure the source. One gross hack that was there before and
* that I've kept around is the priority to the BE which I set to
* be the same as the interrupt source number. I don't know wether
^ permalink raw reply
* [patch 08/14] powerpc: mpc8xx_pic: Cleanup flow type handling
From: Thomas Gleixner @ 2011-03-25 21:36 UTC (permalink / raw)
To: Benjamin Herrenschmidt; +Cc: Lennert Buytenhek, linuxppc-dev
In-Reply-To: <20110325164049.138289403@linutronix.de>
The core irq_set_type() function updates the flow type when the chip
callback returns 0. So setting the type is bogus. The level flag is
updated in the core as well.
Use the proper accessors for setting the irq handlers.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
arch/powerpc/sysdev/mpc8xx_pic.c | 9 +--------
1 file changed, 1 insertion(+), 8 deletions(-)
Index: linux-2.6-tip/arch/powerpc/sysdev/mpc8xx_pic.c
===================================================================
--- linux-2.6-tip.orig/arch/powerpc/sysdev/mpc8xx_pic.c
+++ linux-2.6-tip/arch/powerpc/sysdev/mpc8xx_pic.c
@@ -72,13 +72,6 @@ static void mpc8xx_end_irq(struct irq_da
static int mpc8xx_set_irq_type(struct irq_data *d, unsigned int flow_type)
{
- struct irq_desc *desc = irq_to_desc(d->irq);
-
- desc->status &= ~(IRQ_TYPE_SENSE_MASK | IRQ_LEVEL);
- desc->status |= flow_type & IRQ_TYPE_SENSE_MASK;
- if (flow_type & (IRQ_TYPE_LEVEL_HIGH | IRQ_TYPE_LEVEL_LOW))
- desc->status |= IRQ_LEVEL;
-
if (flow_type & IRQ_TYPE_EDGE_FALLING) {
irq_hw_number_t hw = (unsigned int)irq_map[d->irq].hwirq;
unsigned int siel = in_be32(&siu_reg->sc_siel);
@@ -87,7 +80,7 @@ static int mpc8xx_set_irq_type(struct ir
if ((hw & 1) == 0) {
siel |= (0x80000000 >> hw);
out_be32(&siu_reg->sc_siel, siel);
- desc->handle_irq = handle_edge_irq;
+ __set_irq_handler_unlocked(irq, handle_edge_irq);
}
}
return 0;
^ permalink raw reply
* [patch 05/14] powerpc: cpm2_pic: Cleanup flow type handling
From: Thomas Gleixner @ 2011-03-25 21:36 UTC (permalink / raw)
To: Benjamin Herrenschmidt; +Cc: Lennert Buytenhek, linuxppc-dev
In-Reply-To: <20110325164049.138289403@linutronix.de>
The core irq_set_type() function updates the flow type when the chip
callback returns 0. So setting the type is bogus.
The new core code allows to update the type in irq_data and return
IRQ_SET_MASK_OK_NOCOPY, so the core code will not touch it, except for
setting the IRQ_LEVEL flag.
Use the proper accessors for setting the irq handlers.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
arch/powerpc/sysdev/cpm2_pic.c | 18 ++++++++----------
1 file changed, 8 insertions(+), 10 deletions(-)
Index: linux-2.6-tip/arch/powerpc/sysdev/cpm2_pic.c
===================================================================
--- linux-2.6-tip.orig/arch/powerpc/sysdev/cpm2_pic.c
+++ linux-2.6-tip/arch/powerpc/sysdev/cpm2_pic.c
@@ -140,7 +140,6 @@ static void cpm2_end_irq(struct irq_data
static int cpm2_set_irq_type(struct irq_data *d, unsigned int flow_type)
{
unsigned int src = virq_to_hw(d->irq);
- struct irq_desc *desc = irq_to_desc(d->irq);
unsigned int vold, vnew, edibit;
/* Port C interrupts are either IRQ_TYPE_EDGE_FALLING or
@@ -162,13 +161,11 @@ static int cpm2_set_irq_type(struct irq_
goto err_sense;
}
- desc->status &= ~(IRQ_TYPE_SENSE_MASK | IRQ_LEVEL);
- desc->status |= flow_type & IRQ_TYPE_SENSE_MASK;
- if (flow_type & IRQ_TYPE_LEVEL_LOW) {
- desc->status |= IRQ_LEVEL;
- desc->handle_irq = handle_level_irq;
- } else
- desc->handle_irq = handle_edge_irq;
+ irqd_set_trigger_type(d, flow_type);
+ if (flow_type & IRQ_TYPE_LEVEL_LOW)
+ __set_irq_handler_unlocked(d->irq, handle_level_irq);
+ else
+ __set_irq_handler_unlocked(d->irq, handle_edge_irq);
/* internal IRQ senses are LEVEL_LOW
* EXT IRQ and Port C IRQ senses are programmable
@@ -179,7 +176,8 @@ static int cpm2_set_irq_type(struct irq_
if (src >= CPM2_IRQ_PORTC15 && src <= CPM2_IRQ_PORTC0)
edibit = (31 - (CPM2_IRQ_PORTC0 - src));
else
- return (flow_type & IRQ_TYPE_LEVEL_LOW) ? 0 : -EINVAL;
+ return (flow_type & IRQ_TYPE_LEVEL_LOW) ?
+ IRQ_SET_MASK_OK_NOCOPY : -EINVAL;
vold = in_be32(&cpm2_intctl->ic_siexr);
@@ -190,7 +188,7 @@ static int cpm2_set_irq_type(struct irq_
if (vold != vnew)
out_be32(&cpm2_intctl->ic_siexr, vnew);
- return 0;
+ return IRQ_SET_MASK_OK_NOCOPY;
err_sense:
pr_err("CPM2 PIC: sense type 0x%x not supported\n", flow_type);
^ permalink raw reply
* [patch 14/14] powerpc: Use generic show_interrupts()
From: Thomas Gleixner @ 2011-03-25 21:36 UTC (permalink / raw)
To: Benjamin Herrenschmidt; +Cc: Lennert Buytenhek, linuxppc-dev
In-Reply-To: <20110325164049.138289403@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
arch/powerpc/Kconfig | 2 +
arch/powerpc/kernel/irq.c | 61 ----------------------------------------------
2 files changed, 3 insertions(+), 60 deletions(-)
Index: linux-2.6-tip/arch/powerpc/Kconfig
===================================================================
--- linux-2.6-tip.orig/arch/powerpc/Kconfig
+++ linux-2.6-tip/arch/powerpc/Kconfig
@@ -135,6 +135,8 @@ config PPC
select HAVE_SPARSE_IRQ
select IRQ_PER_CPU
select GENERIC_HARDIRQS_NO_DEPRECATED
+ select GENERIC_IRQ_SHOW
+ select GENERIC_IRQ_SHOW_LEVEL
config EARLY_PRINTK
bool
Index: linux-2.6-tip/arch/powerpc/kernel/irq.c
===================================================================
--- linux-2.6-tip.orig/arch/powerpc/kernel/irq.c
+++ linux-2.6-tip/arch/powerpc/kernel/irq.c
@@ -195,7 +195,7 @@ notrace void arch_local_irq_restore(unsi
EXPORT_SYMBOL(arch_local_irq_restore);
#endif /* CONFIG_PPC64 */
-static int show_other_interrupts(struct seq_file *p, int prec)
+int arch_show_interrupts(struct seq_file *p, int prec)
{
int j;
@@ -231,65 +231,6 @@ static int show_other_interrupts(struct
return 0;
}
-int show_interrupts(struct seq_file *p, void *v)
-{
- unsigned long flags, any_count = 0;
- int i = *(loff_t *) v, j, prec;
- struct irqaction *action;
- struct irq_desc *desc;
- struct irq_chip *chip;
-
- if (i > nr_irqs)
- return 0;
-
- for (prec = 3, j = 1000; prec < 10 && j <= nr_irqs; ++prec)
- j *= 10;
-
- if (i == nr_irqs)
- return show_other_interrupts(p, prec);
-
- /* print header */
- if (i == 0) {
- seq_printf(p, "%*s", prec + 8, "");
- for_each_online_cpu(j)
- seq_printf(p, "CPU%-8d", j);
- seq_putc(p, '\n');
- }
-
- desc = irq_to_desc(i);
- if (!desc)
- return 0;
-
- raw_spin_lock_irqsave(&desc->lock, flags);
- for_each_online_cpu(j)
- any_count |= kstat_irqs_cpu(i, j);
- action = desc->action;
- if (!action && !any_count)
- goto out;
-
- seq_printf(p, "%*d: ", prec, i);
- for_each_online_cpu(j)
- seq_printf(p, "%10u ", kstat_irqs_cpu(i, j));
-
- chip = get_irq_desc_chip(desc);
- if (chip)
- seq_printf(p, " %-16s", chip->name);
- else
- seq_printf(p, " %-16s", "None");
- seq_printf(p, " %-8s", (irqd_is_level_type(&desc->irq_data) ? "Level" : "Edge");
-
- if (action) {
- seq_printf(p, " %s", action->name);
- while ((action = action->next) != NULL)
- seq_printf(p, ", %s", action->name);
- }
-
- seq_putc(p, '\n');
-out:
- raw_spin_unlock_irqrestore(&desc->lock, flags);
- return 0;
-}
-
/*
* /proc/stat helpers
*/
^ permalink raw reply
* [patch 06/14] powerpc: cpm2_pic: Use IRQCHIP_EOI_IF_HANDLED
From: Thomas Gleixner @ 2011-03-25 21:36 UTC (permalink / raw)
To: Benjamin Herrenschmidt; +Cc: Lennert Buytenhek, linuxppc-dev
In-Reply-To: <20110325164049.138289403@linutronix.de>
The core code provides the same functionality when the
IRQCHIP_EOI_IF_HANDLED flag is set for the irq chip.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
arch/powerpc/sysdev/cpm2_pic.c | 29 ++++++++++++-----------------
1 file changed, 12 insertions(+), 17 deletions(-)
Index: linux-2.6-tip/arch/powerpc/sysdev/cpm2_pic.c
===================================================================
--- linux-2.6-tip.orig/arch/powerpc/sysdev/cpm2_pic.c
+++ linux-2.6-tip/arch/powerpc/sysdev/cpm2_pic.c
@@ -115,26 +115,20 @@ static void cpm2_ack(struct irq_data *d)
static void cpm2_end_irq(struct irq_data *d)
{
- struct irq_desc *desc;
int bit, word;
unsigned int irq_nr = virq_to_hw(d->irq);
- desc = irq_to_desc(irq_nr);
- if (!(desc->status & (IRQ_DISABLED|IRQ_INPROGRESS))
- && desc->action) {
-
- bit = irq_to_siubit[irq_nr];
- word = irq_to_siureg[irq_nr];
-
- ppc_cached_irq_mask[word] |= 1 << bit;
- out_be32(&cpm2_intctl->ic_simrh + word, ppc_cached_irq_mask[word]);
-
- /*
- * Work around large numbers of spurious IRQs on PowerPC 82xx
- * systems.
- */
- mb();
- }
+ bit = irq_to_siubit[irq_nr];
+ word = irq_to_siureg[irq_nr];
+
+ ppc_cached_irq_mask[word] |= 1 << bit;
+ out_be32(&cpm2_intctl->ic_simrh + word, ppc_cached_irq_mask[word]);
+
+ /*
+ * Work around large numbers of spurious IRQs on PowerPC 82xx
+ * systems.
+ */
+ mb();
}
static int cpm2_set_irq_type(struct irq_data *d, unsigned int flow_type)
@@ -202,6 +196,7 @@ static struct irq_chip cpm2_pic = {
.irq_ack = cpm2_ack,
.irq_eoi = cpm2_end_irq,
.irq_set_type = cpm2_set_irq_type,
+ .flags = IRQCHIP_EOI_IF_HANDLED,
};
unsigned int cpm2_get_irq(void)
^ permalink raw reply
* [patch 09/14] powerpc: mpic: Cleanup flow type handling
From: Thomas Gleixner @ 2011-03-25 21:36 UTC (permalink / raw)
To: Benjamin Herrenschmidt; +Cc: Lennert Buytenhek, linuxppc-dev
In-Reply-To: <20110325164049.138289403@linutronix.de>
The core irq_set_type() function updates the flow type when the chip
callback returns 0. So setting the type is bogus.
The new core code allows to update the type in irq_data and return
IRQ_SET_MASK_OK_NOCOPY, so the core code will not touch it, except for
setting the IRQ_LEVEL flag.
Retrieve the IRQ_LEVEL information from irq_data which avoids a
redundant sparse irq lookup as well.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
arch/powerpc/sysdev/mpic.c | 29 ++++++++++++-----------------
1 file changed, 12 insertions(+), 17 deletions(-)
Index: linux-2.6-tip/arch/powerpc/sysdev/mpic.c
===================================================================
--- linux-2.6-tip.orig/arch/powerpc/sysdev/mpic.c
+++ linux-2.6-tip/arch/powerpc/sysdev/mpic.c
@@ -361,7 +361,7 @@ static inline void mpic_ht_end_irq(struc
}
static void mpic_startup_ht_interrupt(struct mpic *mpic, unsigned int source,
- unsigned int irqflags)
+ bool level)
{
struct mpic_irq_fixup *fixup = &mpic->fixups[source];
unsigned long flags;
@@ -370,14 +370,14 @@ static void mpic_startup_ht_interrupt(st
if (fixup->base == NULL)
return;
- DBG("startup_ht_interrupt(0x%x, 0x%x) index: %d\n",
- source, irqflags, fixup->index);
+ DBG("startup_ht_interrupt(0x%x) index: %d\n",
+ source, fixup->index);
raw_spin_lock_irqsave(&mpic->fixup_lock, flags);
/* Enable and configure */
writeb(0x10 + 2 * fixup->index, fixup->base + 2);
tmp = readl(fixup->base + 4);
tmp &= ~(0x23U);
- if (irqflags & IRQ_LEVEL)
+ if (level)
tmp |= 0x22;
writel(tmp, fixup->base + 4);
raw_spin_unlock_irqrestore(&mpic->fixup_lock, flags);
@@ -389,8 +389,7 @@ static void mpic_startup_ht_interrupt(st
#endif
}
-static void mpic_shutdown_ht_interrupt(struct mpic *mpic, unsigned int source,
- unsigned int irqflags)
+static void mpic_shutdown_ht_interrupt(struct mpic *mpic, unsigned int source)
{
struct mpic_irq_fixup *fixup = &mpic->fixups[source];
unsigned long flags;
@@ -399,7 +398,7 @@ static void mpic_shutdown_ht_interrupt(s
if (fixup->base == NULL)
return;
- DBG("shutdown_ht_interrupt(0x%x, 0x%x)\n", source, irqflags);
+ DBG("shutdown_ht_interrupt(0x%x)\n", source);
/* Disable */
raw_spin_lock_irqsave(&mpic->fixup_lock, flags);
@@ -738,7 +737,7 @@ static void mpic_unmask_ht_irq(struct ir
mpic_unmask_irq(d);
- if (irq_to_desc(d->irq)->status & IRQ_LEVEL)
+ if (irqd_is_level(d))
mpic_ht_end_irq(mpic, src);
}
@@ -748,7 +747,7 @@ static unsigned int mpic_startup_ht_irq(
unsigned int src = mpic_irq_to_hw(d->irq);
mpic_unmask_irq(d);
- mpic_startup_ht_interrupt(mpic, src, irq_to_desc(d->irq)->status);
+ mpic_startup_ht_interrupt(mpic, src, irqd_is_level_type(d));
return 0;
}
@@ -758,7 +757,7 @@ static void mpic_shutdown_ht_irq(struct
struct mpic *mpic = mpic_from_irq_data(d);
unsigned int src = mpic_irq_to_hw(d->irq);
- mpic_shutdown_ht_interrupt(mpic, src, irq_to_desc(d->irq)->status);
+ mpic_shutdown_ht_interrupt(mpic, src);
mpic_mask_irq(d);
}
@@ -775,7 +774,7 @@ static void mpic_end_ht_irq(struct irq_d
* latched another edge interrupt coming in anyway
*/
- if (irq_to_desc(d->irq)->status & IRQ_LEVEL)
+ if (irqd_is_level_type(d))
mpic_ht_end_irq(mpic, src);
mpic_eoi(mpic);
}
@@ -864,7 +863,6 @@ int mpic_set_irq_type(struct irq_data *d
{
struct mpic *mpic = mpic_from_irq_data(d);
unsigned int src = mpic_irq_to_hw(d->irq);
- struct irq_desc *desc = irq_to_desc(d->irq);
unsigned int vecpri, vold, vnew;
DBG("mpic: set_irq_type(mpic:@%p,virq:%d,src:0x%x,type:0x%x)\n",
@@ -879,10 +877,7 @@ int mpic_set_irq_type(struct irq_data *d
if (flow_type == IRQ_TYPE_NONE)
flow_type = IRQ_TYPE_LEVEL_LOW;
- desc->status &= ~(IRQ_TYPE_SENSE_MASK | IRQ_LEVEL);
- desc->status |= flow_type & IRQ_TYPE_SENSE_MASK;
- if (flow_type & (IRQ_TYPE_LEVEL_HIGH | IRQ_TYPE_LEVEL_LOW))
- desc->status |= IRQ_LEVEL;
+ irqd_set_trigger_type(d, flow_type);
if (mpic_is_ht_interrupt(mpic, src))
vecpri = MPIC_VECPRI_POLARITY_POSITIVE |
@@ -897,7 +892,7 @@ int mpic_set_irq_type(struct irq_data *d
if (vold != vnew)
mpic_irq_write(src, MPIC_INFO(IRQ_VECTOR_PRI), vnew);
- return 0;
+ return IRQ_SET_MASK_OK_NOCOPY;;
}
void mpic_set_vector(unsigned int virq, unsigned int vector)
^ permalink raw reply
* [patch 11/14] powerpc: xilinx: Cleanup flow type handling
From: Thomas Gleixner @ 2011-03-25 21:36 UTC (permalink / raw)
To: Benjamin Herrenschmidt; +Cc: Lennert Buytenhek, linuxppc-dev
In-Reply-To: <20110325164049.138289403@linutronix.de>
The core irq_set_type() function updates the flow type when the chip
callback returns 0. So setting the type is bogus. The core also
updates the LEVEL flag.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
arch/powerpc/sysdev/xilinx_intc.c | 6 ------
1 file changed, 6 deletions(-)
Index: linux-2.6-tip/arch/powerpc/sysdev/xilinx_intc.c
===================================================================
--- linux-2.6-tip.orig/arch/powerpc/sysdev/xilinx_intc.c
+++ linux-2.6-tip/arch/powerpc/sysdev/xilinx_intc.c
@@ -79,12 +79,6 @@ static void xilinx_intc_mask(struct irq_
static int xilinx_intc_set_type(struct irq_data *d, unsigned int flow_type)
{
- struct irq_desc *desc = irq_to_desc(d->irq);
-
- desc->status &= ~(IRQ_TYPE_SENSE_MASK | IRQ_LEVEL);
- desc->status |= flow_type & IRQ_TYPE_SENSE_MASK;
- if (flow_type & (IRQ_TYPE_LEVEL_HIGH | IRQ_TYPE_LEVEL_LOW))
- desc->status |= IRQ_LEVEL;
return 0;
}
^ permalink raw reply
* [patch 10/14] powerpc: uic: Cleanup flow type handling
From: Thomas Gleixner @ 2011-03-25 21:36 UTC (permalink / raw)
To: Benjamin Herrenschmidt; +Cc: Lennert Buytenhek, linuxppc-dev
In-Reply-To: <20110325164049.138289403@linutronix.de>
The core irq_set_type() function updates the flow type when the chip
callback returns 0. So setting the type is bogus. The core also
updates IRQ_LEVEL.
Use irq_data to get the level type information in the chip functions.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
arch/powerpc/sysdev/uic.c | 25 +++++++++----------------
1 file changed, 9 insertions(+), 16 deletions(-)
Index: linux-2.6-tip/arch/powerpc/sysdev/uic.c
===================================================================
--- linux-2.6-tip.orig/arch/powerpc/sysdev/uic.c
+++ linux-2.6-tip/arch/powerpc/sysdev/uic.c
@@ -57,7 +57,6 @@ struct uic {
static void uic_unmask_irq(struct irq_data *d)
{
- struct irq_desc *desc = irq_to_desc(d->irq);
struct uic *uic = irq_data_get_irq_chip_data(d);
unsigned int src = uic_irq_to_hw(d->irq);
unsigned long flags;
@@ -66,7 +65,7 @@ static void uic_unmask_irq(struct irq_da
sr = 1 << (31-src);
spin_lock_irqsave(&uic->lock, flags);
/* ack level-triggered interrupts here */
- if (desc->status & IRQ_LEVEL)
+ if (irqd_is_level_type(d))
mtdcr(uic->dcrbase + UIC_SR, sr);
er = mfdcr(uic->dcrbase + UIC_ER);
er |= sr;
@@ -101,7 +100,6 @@ static void uic_ack_irq(struct irq_data
static void uic_mask_ack_irq(struct irq_data *d)
{
- struct irq_desc *desc = irq_to_desc(d->irq);
struct uic *uic = irq_data_get_irq_chip_data(d);
unsigned int src = uic_irq_to_hw(d->irq);
unsigned long flags;
@@ -120,7 +118,7 @@ static void uic_mask_ack_irq(struct irq_
* level interrupts are ack'ed after the actual
* isr call in the uic_unmask_irq()
*/
- if (!(desc->status & IRQ_LEVEL))
+ if (!irqd_is_level_type(d))
mtdcr(uic->dcrbase + UIC_SR, sr);
spin_unlock_irqrestore(&uic->lock, flags);
}
@@ -129,7 +127,6 @@ static int uic_set_irq_type(struct irq_d
{
struct uic *uic = irq_data_get_irq_chip_data(d);
unsigned int src = uic_irq_to_hw(d->irq);
- struct irq_desc *desc = irq_to_desc(d->irq);
unsigned long flags;
int trigger, polarity;
u32 tr, pr, mask;
@@ -166,11 +163,6 @@ static int uic_set_irq_type(struct irq_d
mtdcr(uic->dcrbase + UIC_PR, pr);
mtdcr(uic->dcrbase + UIC_TR, tr);
- desc->status &= ~(IRQ_TYPE_SENSE_MASK | IRQ_LEVEL);
- desc->status |= flow_type & IRQ_TYPE_SENSE_MASK;
- if (!trigger)
- desc->status |= IRQ_LEVEL;
-
spin_unlock_irqrestore(&uic->lock, flags);
return 0;
@@ -221,16 +213,17 @@ static struct irq_host_ops uic_host_ops
void uic_irq_cascade(unsigned int virq, struct irq_desc *desc)
{
struct irq_chip *chip = get_irq_desc_chip(desc);
+ struct irq_data *idata = irq_desc_get_irq_data(desc);
struct uic *uic = get_irq_data(virq);
u32 msr;
int src;
int subvirq;
raw_spin_lock(&desc->lock);
- if (desc->status & IRQ_LEVEL)
- chip->irq_mask(&desc->irq_data);
+ if (irqd_is_level_type(idata))
+ chip->irq_mask(idata);
else
- chip->irq_mask_ack(&desc->irq_data);
+ chip->irq_mask_ack(idata);
raw_spin_unlock(&desc->lock);
msr = mfdcr(uic->dcrbase + UIC_MSR);
@@ -244,10 +237,10 @@ void uic_irq_cascade(unsigned int virq,
uic_irq_ret:
raw_spin_lock(&desc->lock);
- if (desc->status & IRQ_LEVEL)
- chip->irq_ack(&desc->irq_data);
+ if (irqd_is_level_type(data))
+ chip->irq_ack(idata);
if (!(desc->status & IRQ_DISABLED) && chip->irq_unmask)
- chip->irq_unmask(&desc->irq_data);
+ chip->irq_unmask(idata);
raw_spin_unlock(&desc->lock);
}
^ permalink raw reply
* [PATCH] nvram: Don't overwrite oops/panic report on normal shutdown
From: Jim Keniston @ 2011-03-25 22:47 UTC (permalink / raw)
To: benh, linuxppc-dev
For normal halt, reboot, and poweroff events, refrain from overwriting
the lnx,oops-log partition. Also, don't save the dmesg buffer on an
emergency-restart event if we've already saved it earlier in panic().
Signed-off-by: Jim Keniston <jkenisto@us.ibm.com>
---
arch/powerpc/platforms/pseries/nvram.c | 24 ++++++++++++++++++++++++
1 files changed, 24 insertions(+), 0 deletions(-)
diff --git a/arch/powerpc/platforms/pseries/nvram.c b/arch/powerpc/platforms/pseries/nvram.c
index 419707b..00cc3a0 100644
--- a/arch/powerpc/platforms/pseries/nvram.c
+++ b/arch/powerpc/platforms/pseries/nvram.c
@@ -480,8 +480,32 @@ static void oops_to_nvram(struct kmsg_dumper *dumper,
const char *new_msgs, unsigned long new_len)
{
static unsigned int oops_count = 0;
+ static bool panicking = false;
size_t text_len;
+ switch (reason) {
+ case KMSG_DUMP_RESTART:
+ case KMSG_DUMP_HALT:
+ case KMSG_DUMP_POWEROFF:
+ /* These are almost always orderly shutdowns. */
+ return;
+ case KMSG_DUMP_OOPS:
+ case KMSG_DUMP_KEXEC:
+ break;
+ case KMSG_DUMP_PANIC:
+ panicking = true;
+ break;
+ case KMSG_DUMP_EMERG:
+ if (panicking)
+ /* Panic report already captured. */
+ return;
+ break;
+ default:
+ pr_err("%s: ignoring unrecognized KMSG_DUMP_* reason %d\n",
+ __FUNCTION__, (int) reason);
+ return;
+ }
+
if (clobbering_unread_rtas_event())
return;
^ permalink raw reply related
* Re: [PATCH 3/5] xhci: Add rmb() between reading event validity & event data access.
From: Segher Boessenkool @ 2011-03-25 23:11 UTC (permalink / raw)
To: Matt Evans; +Cc: sarah.a.sharp, linuxppc-dev, linux-usb
In-Reply-To: <4D8C47CD.3020108@ozlabs.org>
> On weakly-ordered systems, the reading of an event's content must occur
> after reading the event's validity.
Put a comment on the rmb() saying what it orders?
Segher
^ permalink raw reply
* [PATCH] powerpc: restore some misc devices to our configs
From: Stephen Rothwell @ 2011-03-26 7:11 UTC (permalink / raw)
To: Benjamin Herrenschmidt; +Cc: ppc-dev, "Uwe Kleine-König"
Uwe Kleine-König reported:
while working on an defconfig (arm/mx27) I noticed that just updating
it[1] results in removing CONFIG_EEPROM_AT24=y. The reason is that
since commit
v2.6.36-5965-g5f2365d (misc devices: do not enable by default)
MISC_DEVICES isn't enabled anymore by default. So all defconfigs that
have CONFIG_SOME_SYMBOL=y (or =m) (with SOME_SYMBOL depending on
MISC_DEVICES) but not CONFIG_MISC_DEVICES=y suffer from the same
problem.
This restores those misc devices to the powerpc defconfigs.
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Uwe Kleine-König <u.kleine-koenig@pengutronix.de
---
arch/powerpc/configs/44x/warp_defconfig | 1 +
arch/powerpc/configs/52xx/motionpro_defconfig | 1 +
arch/powerpc/configs/86xx/gef_ppc9a_defconfig | 1 +
arch/powerpc/configs/86xx/gef_sbc310_defconfig | 1 +
arch/powerpc/configs/86xx/gef_sbc610_defconfig | 1 +
arch/powerpc/configs/86xx/mpc8641_hpcn_defconfig | 1 +
arch/powerpc/configs/e55xx_smp_defconfig | 1 +
arch/powerpc/configs/linkstation_defconfig | 1 +
arch/powerpc/configs/mpc512x_defconfig | 1 +
arch/powerpc/configs/mpc5200_defconfig | 1 +
arch/powerpc/configs/mpc85xx_defconfig | 1 +
arch/powerpc/configs/mpc85xx_smp_defconfig | 1 +
arch/powerpc/configs/mpc86xx_defconfig | 1 +
arch/powerpc/configs/pasemi_defconfig | 1 +
arch/powerpc/configs/ppc6xx_defconfig | 1 +
15 files changed, 15 insertions(+), 0 deletions(-)
This has been verified by doing a "make <config>;make savedefconfig"
before and after applying it. The only changes before/after for all the
powerpc configs is that these misc devices are reenabled in the configs.
diff --git a/arch/powerpc/configs/44x/warp_defconfig b/arch/powerpc/configs/44x/warp_defconfig
index 6cf9d66..abf74dc 100644
--- a/arch/powerpc/configs/44x/warp_defconfig
+++ b/arch/powerpc/configs/44x/warp_defconfig
@@ -47,6 +47,7 @@ CONFIG_MTD_NAND_NDFC=y
CONFIG_MTD_UBI=y
CONFIG_PROC_DEVICETREE=y
CONFIG_BLK_DEV_RAM=y
+CONFIG_MISC_DEVICES=y
CONFIG_EEPROM_AT24=y
CONFIG_SCSI=y
CONFIG_BLK_DEV_SD=y
diff --git a/arch/powerpc/configs/52xx/motionpro_defconfig b/arch/powerpc/configs/52xx/motionpro_defconfig
index 6828eda..0c7de96 100644
--- a/arch/powerpc/configs/52xx/motionpro_defconfig
+++ b/arch/powerpc/configs/52xx/motionpro_defconfig
@@ -43,6 +43,7 @@ CONFIG_PROC_DEVICETREE=y
CONFIG_BLK_DEV_LOOP=y
CONFIG_BLK_DEV_RAM=y
CONFIG_BLK_DEV_RAM_SIZE=32768
+CONFIG_MISC_DEVICES=y
CONFIG_EEPROM_LEGACY=y
CONFIG_SCSI_TGT=y
CONFIG_BLK_DEV_SD=y
diff --git a/arch/powerpc/configs/86xx/gef_ppc9a_defconfig b/arch/powerpc/configs/86xx/gef_ppc9a_defconfig
index 4b24412..d41857a 100644
--- a/arch/powerpc/configs/86xx/gef_ppc9a_defconfig
+++ b/arch/powerpc/configs/86xx/gef_ppc9a_defconfig
@@ -85,6 +85,7 @@ CONFIG_BLK_DEV_CRYPTOLOOP=m
CONFIG_BLK_DEV_NBD=m
CONFIG_BLK_DEV_RAM=y
CONFIG_BLK_DEV_RAM_SIZE=131072
+CONFIG_MISC_DEVICES=y
CONFIG_DS1682=y
CONFIG_IDE=y
CONFIG_BLK_DEV_IDECS=y
diff --git a/arch/powerpc/configs/86xx/gef_sbc310_defconfig b/arch/powerpc/configs/86xx/gef_sbc310_defconfig
index a360ba4..38303ec 100644
--- a/arch/powerpc/configs/86xx/gef_sbc310_defconfig
+++ b/arch/powerpc/configs/86xx/gef_sbc310_defconfig
@@ -85,6 +85,7 @@ CONFIG_BLK_DEV_CRYPTOLOOP=m
CONFIG_BLK_DEV_NBD=m
CONFIG_BLK_DEV_RAM=y
CONFIG_BLK_DEV_RAM_SIZE=131072
+CONFIG_MISC_DEVICES=y
CONFIG_DS1682=y
CONFIG_IDE=y
CONFIG_BLK_DEV_IDECS=y
diff --git a/arch/powerpc/configs/86xx/gef_sbc610_defconfig b/arch/powerpc/configs/86xx/gef_sbc610_defconfig
index be2829d..9853397 100644
--- a/arch/powerpc/configs/86xx/gef_sbc610_defconfig
+++ b/arch/powerpc/configs/86xx/gef_sbc610_defconfig
@@ -138,6 +138,7 @@ CONFIG_BLK_DEV_CRYPTOLOOP=m
CONFIG_BLK_DEV_NBD=m
CONFIG_BLK_DEV_RAM=y
CONFIG_BLK_DEV_RAM_SIZE=131072
+CONFIG_MISC_DEVICES=y
CONFIG_DS1682=y
CONFIG_BLK_DEV_SD=y
CONFIG_CHR_DEV_ST=y
diff --git a/arch/powerpc/configs/86xx/mpc8641_hpcn_defconfig b/arch/powerpc/configs/86xx/mpc8641_hpcn_defconfig
index 0c9c7ed..b614508d 100644
--- a/arch/powerpc/configs/86xx/mpc8641_hpcn_defconfig
+++ b/arch/powerpc/configs/86xx/mpc8641_hpcn_defconfig
@@ -63,6 +63,7 @@ CONFIG_BLK_DEV_LOOP=y
CONFIG_BLK_DEV_NBD=y
CONFIG_BLK_DEV_RAM=y
CONFIG_BLK_DEV_RAM_SIZE=131072
+CONFIG_MISC_DEVICES=y
CONFIG_EEPROM_LEGACY=y
CONFIG_BLK_DEV_SD=y
CONFIG_CHR_DEV_ST=y
diff --git a/arch/powerpc/configs/e55xx_smp_defconfig b/arch/powerpc/configs/e55xx_smp_defconfig
index 06f9549..9fa1613 100644
--- a/arch/powerpc/configs/e55xx_smp_defconfig
+++ b/arch/powerpc/configs/e55xx_smp_defconfig
@@ -32,6 +32,7 @@ CONFIG_PROC_DEVICETREE=y
CONFIG_BLK_DEV_LOOP=y
CONFIG_BLK_DEV_RAM=y
CONFIG_BLK_DEV_RAM_SIZE=131072
+CONFIG_MISC_DEVICES=y
CONFIG_EEPROM_LEGACY=y
CONFIG_INPUT_FF_MEMLESS=m
# CONFIG_INPUT_MOUSEDEV is not set
diff --git a/arch/powerpc/configs/linkstation_defconfig b/arch/powerpc/configs/linkstation_defconfig
index f39d0cf..8a874b9 100644
--- a/arch/powerpc/configs/linkstation_defconfig
+++ b/arch/powerpc/configs/linkstation_defconfig
@@ -78,6 +78,7 @@ CONFIG_BLK_DEV_LOOP=y
CONFIG_BLK_DEV_RAM=y
CONFIG_BLK_DEV_RAM_COUNT=2
CONFIG_BLK_DEV_RAM_SIZE=8192
+CONFIG_MISC_DEVICES=y
CONFIG_EEPROM_LEGACY=m
CONFIG_BLK_DEV_SD=y
CONFIG_CHR_DEV_SG=y
diff --git a/arch/powerpc/configs/mpc512x_defconfig b/arch/powerpc/configs/mpc512x_defconfig
index 62db8a3..c02bbb2 100644
--- a/arch/powerpc/configs/mpc512x_defconfig
+++ b/arch/powerpc/configs/mpc512x_defconfig
@@ -61,6 +61,7 @@ CONFIG_BLK_DEV_RAM=y
CONFIG_BLK_DEV_RAM_COUNT=1
CONFIG_BLK_DEV_RAM_SIZE=8192
CONFIG_BLK_DEV_XIP=y
+CONFIG_MISC_DEVICES=y
CONFIG_EEPROM_AT24=y
CONFIG_SCSI=y
# CONFIG_SCSI_PROC_FS is not set
diff --git a/arch/powerpc/configs/mpc5200_defconfig b/arch/powerpc/configs/mpc5200_defconfig
index 7376e27..e63f537 100644
--- a/arch/powerpc/configs/mpc5200_defconfig
+++ b/arch/powerpc/configs/mpc5200_defconfig
@@ -52,6 +52,7 @@ CONFIG_PROC_DEVICETREE=y
CONFIG_BLK_DEV_LOOP=y
CONFIG_BLK_DEV_RAM=y
CONFIG_BLK_DEV_RAM_SIZE=32768
+CONFIG_MISC_DEVICES=y
CONFIG_EEPROM_AT24=y
CONFIG_SCSI_TGT=y
CONFIG_BLK_DEV_SD=y
diff --git a/arch/powerpc/configs/mpc85xx_defconfig b/arch/powerpc/configs/mpc85xx_defconfig
index 99a19d1..c06a86c 100644
--- a/arch/powerpc/configs/mpc85xx_defconfig
+++ b/arch/powerpc/configs/mpc85xx_defconfig
@@ -82,6 +82,7 @@ CONFIG_BLK_DEV_LOOP=y
CONFIG_BLK_DEV_NBD=y
CONFIG_BLK_DEV_RAM=y
CONFIG_BLK_DEV_RAM_SIZE=131072
+CONFIG_MISC_DEVICES=y
CONFIG_EEPROM_LEGACY=y
CONFIG_BLK_DEV_SD=y
CONFIG_CHR_DEV_ST=y
diff --git a/arch/powerpc/configs/mpc85xx_smp_defconfig b/arch/powerpc/configs/mpc85xx_smp_defconfig
index c636f23..942ced9 100644
--- a/arch/powerpc/configs/mpc85xx_smp_defconfig
+++ b/arch/powerpc/configs/mpc85xx_smp_defconfig
@@ -84,6 +84,7 @@ CONFIG_BLK_DEV_LOOP=y
CONFIG_BLK_DEV_NBD=y
CONFIG_BLK_DEV_RAM=y
CONFIG_BLK_DEV_RAM_SIZE=131072
+CONFIG_MISC_DEVICES=y
CONFIG_EEPROM_LEGACY=y
CONFIG_BLK_DEV_SD=y
CONFIG_CHR_DEV_ST=y
diff --git a/arch/powerpc/configs/mpc86xx_defconfig b/arch/powerpc/configs/mpc86xx_defconfig
index 55b5431..038a308 100644
--- a/arch/powerpc/configs/mpc86xx_defconfig
+++ b/arch/powerpc/configs/mpc86xx_defconfig
@@ -66,6 +66,7 @@ CONFIG_BLK_DEV_LOOP=y
CONFIG_BLK_DEV_NBD=y
CONFIG_BLK_DEV_RAM=y
CONFIG_BLK_DEV_RAM_SIZE=131072
+CONFIG_MISC_DEVICES=y
CONFIG_EEPROM_LEGACY=y
CONFIG_BLK_DEV_SD=y
CONFIG_CHR_DEV_ST=y
diff --git a/arch/powerpc/configs/pasemi_defconfig b/arch/powerpc/configs/pasemi_defconfig
index edd2d54..f4deb0b 100644
--- a/arch/powerpc/configs/pasemi_defconfig
+++ b/arch/powerpc/configs/pasemi_defconfig
@@ -59,6 +59,7 @@ CONFIG_PROC_DEVICETREE=y
CONFIG_BLK_DEV_LOOP=y
CONFIG_BLK_DEV_RAM=y
CONFIG_BLK_DEV_RAM_SIZE=16384
+CONFIG_MISC_DEVICES=y
CONFIG_EEPROM_LEGACY=y
CONFIG_IDE=y
CONFIG_BLK_DEV_IDECD=y
diff --git a/arch/powerpc/configs/ppc6xx_defconfig b/arch/powerpc/configs/ppc6xx_defconfig
index 9d64a68..0a10fb0 100644
--- a/arch/powerpc/configs/ppc6xx_defconfig
+++ b/arch/powerpc/configs/ppc6xx_defconfig
@@ -398,6 +398,7 @@ CONFIG_BLK_DEV_RAM_SIZE=16384
CONFIG_CDROM_PKTCDVD=m
CONFIG_VIRTIO_BLK=m
CONFIG_BLK_DEV_HD=y
+CONFIG_MISC_DEVICES=y
CONFIG_ENCLOSURE_SERVICES=m
CONFIG_SENSORS_TSL2550=m
CONFIG_EEPROM_AT24=m
--
1.7.4.1
--
Cheers,
Stephen Rothwell sfr@canb.auug.org.au
http://www.canb.auug.org.au/~sfr/
^ permalink raw reply related
* Re: [PATCH V12 1/4] ptp: Added a brand new class driver for ptp clocks.
From: Richard Cochran @ 2011-03-26 13:12 UTC (permalink / raw)
To: John Stultz
Cc: Rodolfo Giometti, Arnd Bergmann, Peter Zijlstra, linux-api,
devicetree-discuss, linux-kernel, Russell King, Paul Mackerras,
Thomas Gleixner, Alan Cox, netdev, Mike Frysinger,
Christoph Lameter, linuxppc-dev, David Miller, linux-arm-kernel,
Krzysztof Halasa
In-Reply-To: <1300915160.848.33.camel@work-vm>
On Wed, Mar 23, 2011 at 02:19:20PM -0700, John Stultz wrote:
> On Mon, 2011-02-28 at 08:57 +0100, Richard Cochran wrote:
> > +++ b/drivers/ptp/ptp_clock.c
> > @@ -0,0 +1,320 @@
> [snip]
> > +static void enqueue_external_timestamp(struct timestamp_event_queue *queue,
> > + struct ptp_clock_event *src)
> > +{
> > + struct ptp_extts_event *dst;
> > + unsigned long flags;
> > + u32 remainder;
> > +
> > + dst = &queue->buf[queue->tail];
>
> Doesn't the lock need to happen before you access the
> queue->buf[queue->tail] ?
>
> For example: What happens if two cpus enter the function at the same
> time, both get the same tail index, one overwrite the other's data, then
> both take turns bumping up the tail pointer?
Yes, thanks for that catch.
> > +struct timestamp_event_queue {
> > + struct ptp_extts_event buf[PTP_MAX_TIMESTAMPS];
> > + int head;
> > + int tail;
> > + spinlock_t lock;
> > +};
> > +
> > +struct ptp_clock {
> > + struct posix_clock clock;
> > + struct device *dev;
> > + struct ptp_clock_info *info;
> > + dev_t devid;
> > + int index; /* index into clocks.map */
> > + struct pps_device *pps_source;
> > + struct timestamp_event_queue tsevq; /* simple fifo for time stamps */
> > + struct mutex tsevq_mux; /* one process at a time reading the fifo */
> > + wait_queue_head_t tsev_wq;
> > +};
> > +
> > +static inline int queue_cnt(struct timestamp_event_queue *q)
> > +{
> > + int cnt = q->tail - q->head;
> > + return cnt < 0 ? PTP_MAX_TIMESTAMPS + cnt : cnt;
> > +}
>
> q->tail and head access probably need to happen only when locked.
>
> So probably need a comment that queue_cnt must be called only when
> holding the proper lock.
In this case, calling without a lock is allowed. However, I'll add
comment like the following.
* The function queue_cnt() is safe for readers to call without
* holding q->lock. Readers use this function to verify that the queue
* is nonempty before proceeding with a dequeue operation. The fact
* that a writer might concurrently increment the tail does not
* matter, since the queue remains nonempty nonetheless.
Thanks for your feedback,
Richard
^ permalink raw reply
* Re: [PATCH] powerpc: restore some misc devices to our configs
From: Josh Boyer @ 2011-03-26 13:15 UTC (permalink / raw)
To: Stephen Rothwell; +Cc: ppc-dev, "Uwe Kleine-König"
In-Reply-To: <20110326181129.2b578a57.sfr@canb.auug.org.au>
On Sat, Mar 26, 2011 at 06:11:29PM +1100, Stephen Rothwell wrote:
>Uwe Kleine-König reported:
>
> while working on an defconfig (arm/mx27) I noticed that just updating
> it[1] results in removing CONFIG_EEPROM_AT24=y. The reason is that
> since commit
>
> v2.6.36-5965-g5f2365d (misc devices: do not enable by default)
>
> MISC_DEVICES isn't enabled anymore by default. So all defconfigs that
> have CONFIG_SOME_SYMBOL=y (or =m) (with SOME_SYMBOL depending on
> MISC_DEVICES) but not CONFIG_MISC_DEVICES=y suffer from the same
> problem.
>
>This restores those misc devices to the powerpc defconfigs.
>
>Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
>Cc: Uwe Kleine-König <u.kleine-koenig@pengutronix.de
>---
> arch/powerpc/configs/44x/warp_defconfig | 1 +
For the warp change:
Acked-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
josh
^ permalink raw reply
* Re: [PATCH V12 2/4] ptp: Added a clock that uses the eTSEC found on the MPC85xx.
From: Richard Cochran @ 2011-03-26 13:23 UTC (permalink / raw)
To: John Stultz
Cc: Rodolfo Giometti, Arnd Bergmann, Peter Zijlstra, linux-api,
devicetree-discuss, linux-kernel, Russell King, Paul Mackerras,
Thomas Gleixner, Alan Cox, netdev, Mike Frysinger,
Christoph Lameter, linuxppc-dev, David Miller, linux-arm-kernel,
Krzysztof Halasa
In-Reply-To: <1300915804.848.40.camel@work-vm>
On Wed, Mar 23, 2011 at 02:30:04PM -0700, John Stultz wrote:
> On Mon, 2011-02-28 at 08:57 +0100, Richard Cochran wrote:
> > +/*
> > + * Register access functions
> > + */
>
> So what are the locking rules on the functions below? I assume the
> etsects->lock needs to be held prior to calling, so that should be made
> explicit in a comment.
Yes, you are right. I'll add comments.
> > + gfar_write(&etsects->regs->tmr_ctrl, tmr_ctrl);
> > + gfar_write(&etsects->regs->tmr_add, etsects->tmr_add);
> > + gfar_write(&etsects->regs->tmr_prsc, etsects->tmr_prsc);
> > + gfar_write(&etsects->regs->tmr_fiper1, etsects->tmr_fiper1);
> > + gfar_write(&etsects->regs->tmr_fiper2, etsects->tmr_fiper2);
> > + set_alarm(etsects);
> > + gfar_write(&etsects->regs->tmr_ctrl, tmr_ctrl|FS|RTPE|TE);
>
> Does any of the above need a lock should an irq land in the middle of
> the writes?
Since these interrupts first must be enabled, I think it unlikely that
an IRQ could occur. However, it can't hurt to add the lock, either.
Thanks,
Richard
^ permalink raw reply
* Re: [PATCH V12 4/4] ptp: Added a clock driver for the National Semiconductor PHYTER.
From: Richard Cochran @ 2011-03-26 13:40 UTC (permalink / raw)
To: John Stultz
Cc: Rodolfo Giometti, Arnd Bergmann, Peter Zijlstra, linux-api,
devicetree-discuss, linux-kernel, Russell King, Paul Mackerras,
Thomas Gleixner, Alan Cox, netdev, Mike Frysinger,
Christoph Lameter, linuxppc-dev, David Miller, linux-arm-kernel,
Krzysztof Halasa
In-Reply-To: <1300916785.848.54.camel@work-vm>
On Wed, Mar 23, 2011 at 02:46:25PM -0700, John Stultz wrote:
> On Mon, 2011-02-28 at 08:58 +0100, Richard Cochran wrote:
> > +static int tdr_write(int bc, struct phy_device *dev,
> > + const struct timespec *ts, u16 cmd)
> > +{
> > + ext_write(bc, dev, PAGE4, PTP_TDR, ts->tv_nsec & 0xffff);/* ns[15:0] */
> > + ext_write(bc, dev, PAGE4, PTP_TDR, ts->tv_nsec >> 16); /* ns[31:16] */
> > + ext_write(bc, dev, PAGE4, PTP_TDR, ts->tv_sec & 0xffff); /* sec[15:0] */
> > + ext_write(bc, dev, PAGE4, PTP_TDR, ts->tv_sec >> 16); /* sec[31:16]*/
> > +
> > + ext_write(bc, dev, PAGE4, PTP_CTL, cmd);
> > +
> > + return 0;
> > +}
>
> The above needs to hold the extreg_lock, and should be commented as
> such.
Okay, will do.
> And again, the function names are sort of generic, and could use a
> dp83640_ prefix or something.
So, I will rename the IXP functions in the other driver to make them
more unique, but in this case I really prefer to keep the short names
for the sake of readability.
Just about every operation on this PHY requires four 16-bit writes,
where each write can really mean two writes, with the first one to set
a "page" register for the following write.
Keeping the tabular style (shown above) makes it much more clear what
is going on, IMHO. If the function names become longer, that would
force line breaks and spoil the nice formatting.
Also, these names are not in use anywhere else in the kernel's eight
million LOC.
Thanks,
Richard
^ permalink raw reply
* Re: [PATCH] powerpc: restore some misc devices to our configs
From: Uwe Kleine-König @ 2011-03-26 19:57 UTC (permalink / raw)
To: Stephen Rothwell; +Cc: ppc-dev
In-Reply-To: <20110326181129.2b578a57.sfr@canb.auug.org.au>
Hello,
On Sat, Mar 26, 2011 at 06:11:29PM +1100, Stephen Rothwell wrote:
> Uwe Kleine-König reported:
>
> while working on an defconfig (arm/mx27) I noticed that just updating
> it[1] results in removing CONFIG_EEPROM_AT24=y. The reason is that
> since commit
>
> v2.6.36-5965-g5f2365d (misc devices: do not enable by default)
>
> MISC_DEVICES isn't enabled anymore by default. So all defconfigs that
> have CONFIG_SOME_SYMBOL=y (or =m) (with SOME_SYMBOL depending on
> MISC_DEVICES) but not CONFIG_MISC_DEVICES=y suffer from the same
> problem.
>
> This restores those misc devices to the powerpc defconfigs.
>
> Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
> Cc: Uwe Kleine-König <u.kleine-koenig@pengutronix.de
> ---
> arch/powerpc/configs/44x/warp_defconfig | 1 +
> arch/powerpc/configs/52xx/motionpro_defconfig | 1 +
> arch/powerpc/configs/86xx/gef_ppc9a_defconfig | 1 +
> arch/powerpc/configs/86xx/gef_sbc310_defconfig | 1 +
> arch/powerpc/configs/86xx/gef_sbc610_defconfig | 1 +
> arch/powerpc/configs/86xx/mpc8641_hpcn_defconfig | 1 +
> arch/powerpc/configs/e55xx_smp_defconfig | 1 +
> arch/powerpc/configs/linkstation_defconfig | 1 +
> arch/powerpc/configs/mpc512x_defconfig | 1 +
> arch/powerpc/configs/mpc5200_defconfig | 1 +
> arch/powerpc/configs/mpc85xx_defconfig | 1 +
> arch/powerpc/configs/mpc85xx_smp_defconfig | 1 +
> arch/powerpc/configs/mpc86xx_defconfig | 1 +
> arch/powerpc/configs/pasemi_defconfig | 1 +
> arch/powerpc/configs/ppc6xx_defconfig | 1 +
> 15 files changed, 15 insertions(+), 0 deletions(-)
These are exactly the files I reported for powerpc, so
Acked-by: Uwe Kleine-König
Thanks
Uwe
--
Pengutronix e.K. | Uwe Kleine-König |
Industrial Linux Solutions | http://www.pengutronix.de/ |
^ permalink raw reply
* mpc8250 device tree 2.6.38
From: suresh chandra @ 2011-03-26 22:02 UTC (permalink / raw)
To: devicetree-discuss; +Cc: linuxppc-dev
[-- Attachment #1.1: Type: text/plain, Size: 952 bytes --]
Hi All,
I am trying to boot Linux-2.6.38 on custom build MPC8250 board with all
SCC's and SMC's configured as UART's.
As device tree file for 8250 is not available I referred mpc8272ads file and
created the one attached.
I could able to use SMC1 or SCC1 as serial port in u-boot.
I could get Linux serial console on SCC1 but not on SMC1. Port configuration
has been set correctly in Linux.
For some reasons Linux serial console on SCC requires user to press <ENTER>
key to enter the console and also to mount root file system.
One more strange problem is, console won't come up if I pass boot argument
console=ttyCPM0,115200 through u-boot.
I am passing stdout-path through device tree file for serial console
I am not sure where I am doing mistake.
I set the cpm-muram-data to <0 4000>. Rest of the DPRAM is reserved.
I request you to go through device tree file and suggest a solution. I need
SMC1 to work as serial console.
Thanks,
Suresh
[-- Attachment #1.2: Type: text/html, Size: 1054 bytes --]
[-- Attachment #2: ipgate_8250.dts --]
[-- Type: application/octet-stream, Size: 6864 bytes --]
/*
* MPC8250 ADS Device Tree Source
*
* Copyright 2005,2008 Freescale Semiconductor Inc.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*/
/dts-v1/;
/ {
model = "MPC8250ADS";
compatible = "fsl,mpc8250ads";
#address-cells = <1>;
#size-cells = <1>;
aliases {
ethernet0 = ð0;
ethernet1 = ð1;
serial0 = &scc1;
serial1 = &scc2;
serial2 = &scc3;
serial3 = &scc4;
serial4 = &smc1;
serial5 = &smc2;
};
cpus {
#address-cells = <1>;
#size-cells = <0>;
cpu@0 {
device_type = "cpu";
reg = <0x0>;
d-cache-line-size = <32>;
i-cache-line-size = <32>;
d-cache-size = <16384>;
i-cache-size = <16384>;
timebase-frequency = <0>;
bus-frequency = <0>;
clock-frequency = <0>;
};
};
memory {
device_type = "memory";
reg = <0x0 0x0>;
};
localbus@c0010100 {
compatible = "fsl,mpc8250-localbus",
"fsl,pq2-localbus";
#address-cells = <2>;
#size-cells = <1>;
reg = <0xc0010100 0x60>;
ranges = <0x0 0x0 0xf0000000 0x10000000>;
flash@0,0 {
compatible = "jedec-flash";
reg = <0x0 0x0 0x10000000>;
bank-width = <4>;
device-width = <1>;
};
};
soc@0c000000 {
#address-cells = <1>;
#size-cells = <1>;
device_type = "soc";
compatible = "fsl,mpc8250", "fsl,pq2-soc";
ranges = <0x0 0xc0000000 0x53000>;
// Temporary -- will go away once kernel uses ranges for get_immrbase().
reg = <0xc0000000 0x53000>;
cpm@119c0 {
#address-cells = <1>;
#size-cells = <1>;
#interrupt-cells = <2>;
compatible = "fsl,mpc8250-cpm", "fsl,cpm2";
reg = <0x119c0 0x30>;
ranges;
muram@0 {
#address-cells = <1>;
#size-cells = <1>;
ranges = <0x0 0x0 0x10000>;
data@0 {
compatible = "fsl,cpm-muram-data";
reg = <0x0 0x4000>;
};
};
brg@119f0 {
compatible = "fsl,mpc8250-brg",
"fsl,cpm2-brg",
"fsl,cpm-brg";
reg = <0x119f0 0x10 0x115f0 0x10>;
};
/* Monitor port/SCC1 */
scc1: serial@11a00 {
device_type = "serial";
compatible = "fsl,mpc8250-scc-uart",
"fsl,cpm2-scc-uart";
reg = <0x11a00 0x20 0x8000 0x100>;
interrupts = <40 8>;
interrupt-parent = <&PIC>;
fsl,cpm-brg = <1>;
fsl,cpm-command = <0x800000>;
current-speed = <0>; /* Filled in by U-Boot */
};
/* SCC 2 */
scc2:serial@11a20 {
device_type = "serial";
compatible = "fsl,mpc8250-scc-uart",
"fsl,cpm2-scc-uart";
reg = <0x11a20 0x20 0x8100 0x100>;
interrupts = <41 8>;
interrupt-parent = <&PIC>;
fsl,cpm-brg = <2>;
fsl,cpm-command = <0x4a00000>;
};
/* SCC 3 */
scc3: serial@11a40 {
device_type = "serial";
compatible = "fsl,mpc8250-scc-uart",
"fsl,cpm2-scc-uart";
reg = <0x11a40 0x20 0x8200 0x100>;
interrupts = <42 8>;
interrupt-parent = <&PIC>;
fsl,cpm-brg = <3>;
fsl,cpm-command = <0x8c00000>;
};
/* SCC 4 */
scc4: serial@11a60 {
device_type = "serial";
compatible = "fsl,mpc8250-scc-uart",
"fsl,cpm2-scc-uart";
reg = <0x11a60 0x20 0x8300 0x100>;
interrupts = <43 8>;
interrupt-parent = <&PIC>;
fsl,cpm-brg = <4>;
fsl,cpm-command = <0xce00000>;
};
/* SMC1 */
smc1: serial@11a80 {
device_type = "serial";
compatible = "fsl,mpc8250-smc-uart",
"fsl,cpm2-smc-uart";
reg = <0x11a80 0x20 0x87fc 2>;
interrupts = <4 8>;
interrupt-parent = <&PIC>;
fsl,cpm-brg = <7>;
fsl,cpm-command = <0x1d000000>;
current-speed = <0>; /* Filled in by U-Boot */
};
/* SMC2 */
smc2: serial@11a90 {
device_type = "serial";
compatible = "fsl,mpc8250-smc-uart",
"fsl,cpm2-smc-uart";
reg = <0x11a90 0x20 0x88fc 0x02>;
interrupts = <5 8>;
interrupt-parent = <&PIC>;
fsl,cpm-brg = <8>;
fsl,cpm-command = <0x21200000>;
};
mdio1: mdio@10d00 {
device_type = "mdio";
compatible = "fsl,mpc8250ads-mdio-bitbang",
"fsl,mpc8250-mdio-bitbang",
"fsl,cpm2-mdio-bitbang";
reg = <0x10d00 0x14>;
#address-cells = <1>;
#size-cells = <0>;
fsl,mdio-pin = <22>;
fsl,mdc-pin = <23>;
PHY1: ethernet-phy@1 {
interrupt-parent = <&PIC>;
interrupts = <23 8>;
reg = <0x1>;
device_type = "ethernet-phy";
};
};
mdio2: mdio@10d60 {
device_type = "mdio";
compatible = "fsl,mpc8250ads-mdio-bitbang",
"fsl,mpc8250-mdio-bitbang",
"fsl,cpm2-mdio-bitbang";
reg = <0x10d60 0x14>;
#address-cells = <1>;
#size-cells = <0>;
fsl,mdio-pin = <12>;
fsl,mdc-pin = <13>;
PHY2: ethernet-phy@1 {
interrupt-parent = <&PIC>;
interrupts = <23 8>;
reg = <0x1>;
device_type = "ethernet-phy";
};
};
/*
mdio3:sdio@10d60 {
device_type = "mdio";
compatible = "fsl,mpc8250ads-mdio-bitbang",
"fsl,mpc8250-mdio-bitbang",
"fsl,cpm2-mdio-bitbang";
reg = <0x10d60 0x14>;
#address-cells = <1>;
#size-cells = <0>;
fsl,mdio-pin = <17>;
fsl,mdc-pin = <16>;
PHY2: ethernet-phy@0 {
interrupt-parent = <&PIC>;
interrupts = <23 8>;
reg = <0x1>;
device_type = "ethernet-phy";
};
};
*/
eth0: ethernet@11300 {
device_type = "network";
compatible = "fsl,mpc8250-fcc-enet",
"fsl,cpm2-fcc-enet";
reg = <0x11300 0x20 0x8400 0x100 0x11390 0x1>;
local-mac-address = [ 00 00 00 00 00 00 ];
interrupts = <32 8>;
interrupt-parent = <&PIC>;
phy-handle = <&PHY1>;
linux,network-index = <0>;
fsl,cpm-command = <0x12000300>;
};
eth1: ethernet@11320 {
device_type = "network";
compatible = "fsl,mpc8250-fcc-enet",
"fsl,cpm2-fcc-enet";
reg = <0x11320 0x20 0x8500 0x100 0x113b0 1>;
local-mac-address = [ 00 00 00 00 00 00 ];
interrupts = <33 8>;
interrupt-parent = <&PIC>;
phy-handle = <&PHY2>;
linux,network-index = <1>;
fsl,cpm-command = <0x16200300>;
};
PIC: interrupt-controller@10c00 {
#interrupt-cells = <2>;
interrupt-controller;
reg = <0x10c00 0x80>;
compatible = "fsl,mpc8250-pic", "fsl,cpm2-pic";
};
};
};
/*
chosen {
bootargs = "root=/dev/ram rw";
linux,stdout-path = "/soc/cpm/serial@11a00";
};
*/
chosen {
linux,stdout-path = "/soc/cpm/serial@11a00";
};
};
^ permalink raw reply
* [PATCH V13 0/4] ptp: IEEE 1588 hardware clock support
From: Richard Cochran @ 2011-03-27 6:37 UTC (permalink / raw)
To: linux-kernel
Cc: Thomas Gleixner, Rodolfo Giometti, Arnd Bergmann, Peter Zijlstra,
linux-api, devicetree-discuss, Russell King, Paul Mackerras,
John Stultz, linux-arm-kernel, netdev, Mike Frysinger,
Christoph Lameter, linuxppc-dev, David Miller, Alan Cox,
Krzysztof Halasa
* Introduction
The aim of this patch set is to add support for PTP Hardware Clocks
(PHCs) into the Linux kernel. The patch series builds upon the
dynamic posix clock work appearing in kernel version 2.6.39.
Support for obtaining timestamps from a PHC already exists via the
SO_TIMESTAMPING socket option, integrated in kernel version 2.6.30.
This patch set completes the picture by allow user space programs to
adjust the PHC and to control its ancillary features.
* Why all the CCs?
- One driver is for PowerPC, and adds device tree stuff.
- One driver is for the ARM Xscale IXP465.
* PHC Patch ChangeLog
** v13
*** Incorporate v12 review from Andrew Morton
- external timestamp read: mutex was held unnecessarily long
- external timestamp read: require size to be multiple of sizeof(extts)
- replaced 'uint' with 'unsigned int' in poll function
- replaced empty release function with NULL function pointer
*** Incorporate v12 review from John Stultz
- added comment to explain the ppm to ppb conversion
- commented the locking rules for the queue_cnt() function
- commented the ppb to ppm conversion in the example program
- fixed incomplete locking of external timestamp queue
- gianfar, dp83640: comment on the locking rules
- gianfar: fixed unlikely unprotected register access in probe()
- ixp4xx: gave some private functions more unique names
* Previous Discussions
- [V12] http://lkml.org/lkml/2011/2/28/53
- [V11] http://lkml.org/lkml/2011/2/23/107
- [V10] http://lkml.org/lkml/2011/1/27/71
Richard Cochran (4):
ptp: Added a brand new class driver for ptp clocks.
ptp: Added a clock that uses the eTSEC found on the MPC85xx.
ptp: Added a clock driver for the IXP46x.
ptp: Added a clock driver for the National Semiconductor PHYTER.
Documentation/ABI/testing/sysfs-ptp | 98 ++
.../devicetree/bindings/net/fsl-tsec-phy.txt | 54 +
Documentation/ptp/ptp.txt | 89 ++
Documentation/ptp/testptp.c | 368 +++++++
Documentation/ptp/testptp.mk | 33 +
arch/arm/mach-ixp4xx/include/mach/ixp46x_ts.h | 78 ++
arch/powerpc/boot/dts/mpc8313erdb.dts | 13 +
arch/powerpc/boot/dts/mpc8572ds.dts | 13 +
arch/powerpc/boot/dts/p2020ds.dts | 13 +
arch/powerpc/boot/dts/p2020rdb.dts | 13 +
drivers/Kconfig | 2 +
drivers/Makefile | 1 +
drivers/net/Makefile | 1 +
drivers/net/arm/ixp4xx_eth.c | 192 ++++-
drivers/net/gianfar_ptp.c | 588 +++++++++++
drivers/net/phy/Makefile | 1 +
drivers/net/phy/dp83640.c | 1015 ++++++++++++++++++++
drivers/net/phy/dp83640_reg.h | 267 +++++
drivers/ptp/Kconfig | 75 ++
drivers/ptp/Makefile | 7 +
drivers/ptp/ptp_chardev.c | 155 +++
drivers/ptp/ptp_clock.c | 339 +++++++
drivers/ptp/ptp_ixp46x.c | 332 +++++++
drivers/ptp/ptp_private.h | 91 ++
drivers/ptp/ptp_sysfs.c | 230 +++++
include/linux/Kbuild | 1 +
include/linux/ptp_clock.h | 84 ++
include/linux/ptp_clock_kernel.h | 139 +++
28 files changed, 4289 insertions(+), 3 deletions(-)
create mode 100644 Documentation/ABI/testing/sysfs-ptp
create mode 100644 Documentation/ptp/ptp.txt
create mode 100644 Documentation/ptp/testptp.c
create mode 100644 Documentation/ptp/testptp.mk
create mode 100644 arch/arm/mach-ixp4xx/include/mach/ixp46x_ts.h
create mode 100644 drivers/net/gianfar_ptp.c
create mode 100644 drivers/net/phy/dp83640.c
create mode 100644 drivers/net/phy/dp83640_reg.h
create mode 100644 drivers/ptp/Kconfig
create mode 100644 drivers/ptp/Makefile
create mode 100644 drivers/ptp/ptp_chardev.c
create mode 100644 drivers/ptp/ptp_clock.c
create mode 100644 drivers/ptp/ptp_ixp46x.c
create mode 100644 drivers/ptp/ptp_private.h
create mode 100644 drivers/ptp/ptp_sysfs.c
create mode 100644 include/linux/ptp_clock.h
create mode 100644 include/linux/ptp_clock_kernel.h
^ permalink raw reply
* [PATCH V13 1/4] ptp: Added a brand new class driver for ptp clocks.
From: Richard Cochran @ 2011-03-27 6:38 UTC (permalink / raw)
To: linux-kernel
Cc: Thomas Gleixner, Rodolfo Giometti, Arnd Bergmann, Peter Zijlstra,
linux-api, devicetree-discuss, Russell King, Paul Mackerras,
John Stultz, linux-arm-kernel, netdev, Mike Frysinger,
Christoph Lameter, linuxppc-dev, David Miller, Alan Cox,
Krzysztof Halasa
In-Reply-To: <cover.1301206090.git.richard.cochran@omicron.at>
This patch adds an infrastructure for hardware clocks that implement
IEEE 1588, the Precision Time Protocol (PTP). A class driver offers a
registration method to particular hardware clock drivers. Each clock is
presented as a standard POSIX clock.
The ancillary clock features are exposed in two different ways, via
the sysfs and by a character device.
Signed-off-by: Richard Cochran <richard.cochran@omicron.at>
---
Documentation/ABI/testing/sysfs-ptp | 98 +++++++++
Documentation/ptp/ptp.txt | 89 +++++++++
Documentation/ptp/testptp.c | 368 +++++++++++++++++++++++++++++++++++
Documentation/ptp/testptp.mk | 33 +++
drivers/Kconfig | 2 +
drivers/Makefile | 1 +
drivers/ptp/Kconfig | 30 +++
drivers/ptp/Makefile | 6 +
drivers/ptp/ptp_chardev.c | 155 +++++++++++++++
drivers/ptp/ptp_clock.c | 339 ++++++++++++++++++++++++++++++++
drivers/ptp/ptp_private.h | 91 +++++++++
drivers/ptp/ptp_sysfs.c | 230 ++++++++++++++++++++++
include/linux/Kbuild | 1 +
include/linux/ptp_clock.h | 84 ++++++++
include/linux/ptp_clock_kernel.h | 139 +++++++++++++
15 files changed, 1666 insertions(+), 0 deletions(-)
create mode 100644 Documentation/ABI/testing/sysfs-ptp
create mode 100644 Documentation/ptp/ptp.txt
create mode 100644 Documentation/ptp/testptp.c
create mode 100644 Documentation/ptp/testptp.mk
create mode 100644 drivers/ptp/Kconfig
create mode 100644 drivers/ptp/Makefile
create mode 100644 drivers/ptp/ptp_chardev.c
create mode 100644 drivers/ptp/ptp_clock.c
create mode 100644 drivers/ptp/ptp_private.h
create mode 100644 drivers/ptp/ptp_sysfs.c
create mode 100644 include/linux/ptp_clock.h
create mode 100644 include/linux/ptp_clock_kernel.h
diff --git a/Documentation/ABI/testing/sysfs-ptp b/Documentation/ABI/testing/sysfs-ptp
new file mode 100644
index 0000000..d40d2b5
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-ptp
@@ -0,0 +1,98 @@
+What: /sys/class/ptp/
+Date: September 2010
+Contact: Richard Cochran <richardcochran@gmail.com>
+Description:
+ This directory contains files and directories
+ providing a standardized interface to the ancillary
+ features of PTP hardware clocks.
+
+What: /sys/class/ptp/ptpN/
+Date: September 2010
+Contact: Richard Cochran <richardcochran@gmail.com>
+Description:
+ This directory contains the attributes of the Nth PTP
+ hardware clock registered into the PTP class driver
+ subsystem.
+
+What: /sys/class/ptp/ptpN/clock_name
+Date: September 2010
+Contact: Richard Cochran <richardcochran@gmail.com>
+Description:
+ This file contains the name of the PTP hardware clock
+ as a human readable string.
+
+What: /sys/class/ptp/ptpN/max_adjustment
+Date: September 2010
+Contact: Richard Cochran <richardcochran@gmail.com>
+Description:
+ This file contains the PTP hardware clock's maximum
+ frequency adjustment value (a positive integer) in
+ parts per billion.
+
+What: /sys/class/ptp/ptpN/n_alarms
+Date: September 2010
+Contact: Richard Cochran <richardcochran@gmail.com>
+Description:
+ This file contains the number of periodic or one shot
+ alarms offer by the PTP hardware clock.
+
+What: /sys/class/ptp/ptpN/n_external_timestamps
+Date: September 2010
+Contact: Richard Cochran <richardcochran@gmail.com>
+Description:
+ This file contains the number of external timestamp
+ channels offered by the PTP hardware clock.
+
+What: /sys/class/ptp/ptpN/n_periodic_outputs
+Date: September 2010
+Contact: Richard Cochran <richardcochran@gmail.com>
+Description:
+ This file contains the number of programmable periodic
+ output channels offered by the PTP hardware clock.
+
+What: /sys/class/ptp/ptpN/pps_avaiable
+Date: September 2010
+Contact: Richard Cochran <richardcochran@gmail.com>
+Description:
+ This file indicates whether the PTP hardware clock
+ supports a Pulse Per Second to the host CPU. Reading
+ "1" means that the PPS is supported, while "0" means
+ not supported.
+
+What: /sys/class/ptp/ptpN/extts_enable
+Date: September 2010
+Contact: Richard Cochran <richardcochran@gmail.com>
+Description:
+ This write-only file enables or disables external
+ timestamps. To enable external timestamps, write the
+ channel index followed by a "1" into the file.
+ To disable external timestamps, write the channel
+ index followed by a "0" into the file.
+
+What: /sys/class/ptp/ptpN/fifo
+Date: September 2010
+Contact: Richard Cochran <richardcochran@gmail.com>
+Description:
+ This file provides timestamps on external events, in
+ the form of three integers: channel index, seconds,
+ and nanoseconds.
+
+What: /sys/class/ptp/ptpN/period
+Date: September 2010
+Contact: Richard Cochran <richardcochran@gmail.com>
+Description:
+ This write-only file enables or disables periodic
+ outputs. To enable a periodic output, write five
+ integers into the file: channel index, start time
+ seconds, start time nanoseconds, period seconds, and
+ period nanoseconds. To disable a periodic output, set
+ all the seconds and nanoseconds values to zero.
+
+What: /sys/class/ptp/ptpN/pps_enable
+Date: September 2010
+Contact: Richard Cochran <richardcochran@gmail.com>
+Description:
+ This write-only file enables or disables delivery of
+ PPS events to the Linux PPS subsystem. To enable PPS
+ events, write a "1" into the file. To disable events,
+ write a "0" into the file.
diff --git a/Documentation/ptp/ptp.txt b/Documentation/ptp/ptp.txt
new file mode 100644
index 0000000..ae8fef8
--- /dev/null
+++ b/Documentation/ptp/ptp.txt
@@ -0,0 +1,89 @@
+
+* PTP hardware clock infrastructure for Linux
+
+ This patch set introduces support for IEEE 1588 PTP clocks in
+ Linux. Together with the SO_TIMESTAMPING socket options, this
+ presents a standardized method for developing PTP user space
+ programs, synchronizing Linux with external clocks, and using the
+ ancillary features of PTP hardware clocks.
+
+ A new class driver exports a kernel interface for specific clock
+ drivers and a user space interface. The infrastructure supports a
+ complete set of PTP hardware clock functionality.
+
+ + Basic clock operations
+ - Set time
+ - Get time
+ - Shift the clock by a given offset atomically
+ - Adjust clock frequency
+
+ + Ancillary clock features
+ - One short or periodic alarms, with signal delivery to user program
+ - Time stamp external events
+ - Period output signals configurable from user space
+ - Synchronization of the Linux system time via the PPS subsystem
+
+** PTP hardware clock kernel API
+
+ A PTP clock driver registers itself with the class driver. The
+ class driver handles all of the dealings with user space. The
+ author of a clock driver need only implement the details of
+ programming the clock hardware. The clock driver notifies the class
+ driver of asynchronous events (alarms and external time stamps) via
+ a simple message passing interface.
+
+ The class driver supports multiple PTP clock drivers. In normal use
+ cases, only one PTP clock is needed. However, for testing and
+ development, it can be useful to have more than one clock in a
+ single system, in order to allow performance comparisons.
+
+** PTP hardware clock user space API
+
+ The class driver also creates a character device for each
+ registered clock. User space can use an open file descriptor from
+ the character device as a POSIX clock id and may call
+ clock_gettime, clock_settime, and clock_adjtime. These calls
+ implement the basic clock operations.
+
+ User space programs may control the clock using standardized
+ ioctls. A program may query, enable, configure, and disable the
+ ancillary clock features. User space can receive time stamped
+ events via blocking read() and poll(). One shot and periodic
+ signals may be configured via the POSIX timer_settime() system
+ call.
+
+** Writing clock drivers
+
+ Clock drivers include include/linux/ptp_clock_kernel.h and register
+ themselves by presenting a 'struct ptp_clock_info' to the
+ registration method. Clock drivers must implement all of the
+ functions in the interface. If a clock does not offer a particular
+ ancillary feature, then the driver should just return -EOPNOTSUPP
+ from those functions.
+
+ Drivers must ensure that all of the methods in interface are
+ reentrant. Since most hardware implementations treat the time value
+ as a 64 bit integer accessed as two 32 bit registers, drivers
+ should use spin_lock_irqsave/spin_unlock_irqrestore to protect
+ against concurrent access. This locking cannot be accomplished in
+ class driver, since the lock may also be needed by the clock
+ driver's interrupt service routine.
+
+** Supported hardware
+
+ + Freescale eTSEC gianfar
+ - 2 Time stamp external triggers, programmable polarity (opt. interrupt)
+ - 2 Alarm registers (optional interrupt)
+ - 3 Periodic signals (optional interrupt)
+
+ + National DP83640
+ - 6 GPIOs programmable as inputs or outputs
+ - 6 GPIOs with dedicated functions (LED/JTAG/clock) can also be
+ used as general inputs or outputs
+ - GPIO inputs can time stamp external triggers
+ - GPIO outputs can produce periodic signals
+ - 1 interrupt pin
+
+ + Intel IXP465
+ - Auxiliary Slave/Master Mode Snapshot (optional interrupt)
+ - Target Time (optional interrupt)
diff --git a/Documentation/ptp/testptp.c b/Documentation/ptp/testptp.c
new file mode 100644
index 0000000..dd53e44
--- /dev/null
+++ b/Documentation/ptp/testptp.c
@@ -0,0 +1,368 @@
+/*
+ * PTP 1588 clock support - User space test program
+ *
+ * Copyright (C) 2010 OMICRON electronics GmbH
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+#include <errno.h>
+#include <fcntl.h>
+#include <math.h>
+#include <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/ioctl.h>
+#include <sys/mman.h>
+#include <sys/stat.h>
+#include <sys/time.h>
+#include <sys/timex.h>
+#include <sys/types.h>
+#include <time.h>
+#include <unistd.h>
+
+#include <linux/ptp_clock.h>
+
+#define DEVICE "/dev/ptp0"
+
+#ifndef ADJ_SETOFFSET
+#define ADJ_SETOFFSET 0x0100
+#endif
+
+#ifndef CLOCK_INVALID
+#define CLOCK_INVALID -1
+#endif
+
+/* When glibc offers the syscall, this will go away. */
+#include <sys/syscall.h>
+static int clock_adjtime(clockid_t id, struct timex *tx)
+{
+ return syscall(__NR_clock_adjtime, id, tx);
+}
+
+static clockid_t get_clockid(int fd)
+{
+#define CLOCKFD 3
+#define FD_TO_CLOCKID(fd) ((~(clockid_t) (fd) << 3) | CLOCKFD)
+
+ return FD_TO_CLOCKID(fd);
+}
+
+static void handle_alarm(int s)
+{
+ printf("received signal %d\n", s);
+}
+
+static int install_handler(int signum, void (*handler)(int))
+{
+ struct sigaction action;
+ sigset_t mask;
+
+ /* Unblock the signal. */
+ sigemptyset(&mask);
+ sigaddset(&mask, signum);
+ sigprocmask(SIG_UNBLOCK, &mask, NULL);
+
+ /* Install the signal handler. */
+ action.sa_handler = handler;
+ action.sa_flags = 0;
+ sigemptyset(&action.sa_mask);
+ sigaction(signum, &action, NULL);
+
+ return 0;
+}
+
+static long ppb_to_scaled_ppm(int ppb)
+{
+ /*
+ * The 'freq' field in the 'struct timex' is in parts per
+ * million, but with a 16 bit binary fractional field.
+ * Instead of calculating either one of
+ *
+ * scaled_ppm = (ppb / 1000) << 16 [1]
+ * scaled_ppm = (ppb << 16) / 1000 [2]
+ *
+ * we simply use double precision math, in order to avoid the
+ * truncation in [1] and the possible overflow in [2].
+ */
+ return (long) (ppb * 65.536);
+}
+
+static void usage(char *progname)
+{
+ fprintf(stderr,
+ "usage: %s [options]\n"
+ " -a val request a one-shot alarm after 'val' seconds\n"
+ " -A val request a periodic alarm every 'val' seconds\n"
+ " -c query the ptp clock's capabilities\n"
+ " -d name device to open\n"
+ " -e val read 'val' external time stamp events\n"
+ " -f val adjust the ptp clock frequency by 'val' ppb\n"
+ " -g get the ptp clock time\n"
+ " -h prints this message\n"
+ " -p val enable output with a period of 'val' nanoseconds\n"
+ " -P val enable or disable (val=1|0) the system clock PPS\n"
+ " -s set the ptp clock time from the system time\n"
+ " -t val shift the ptp clock time by 'val' seconds\n",
+ progname);
+}
+
+int main(int argc, char *argv[])
+{
+ struct ptp_clock_caps caps;
+ struct ptp_extts_event event;
+ struct ptp_extts_request extts_request;
+ struct ptp_perout_request perout_request;
+ struct timespec ts;
+ struct timex tx;
+
+ static timer_t timerid;
+ struct itimerspec timeout;
+ struct sigevent sigevent;
+
+ char *progname;
+ int c, cnt, fd;
+
+ char *device = DEVICE;
+ clockid_t clkid;
+ int adjfreq = 0x7fffffff;
+ int adjtime = 0;
+ int capabilities = 0;
+ int extts = 0;
+ int gettime = 0;
+ int oneshot = 0;
+ int periodic = 0;
+ int perout = -1;
+ int pps = -1;
+ int settime = 0;
+
+ progname = strrchr(argv[0], '/');
+ progname = progname ? 1+progname : argv[0];
+ while (EOF != (c = getopt(argc, argv, "a:A:cd:e:f:ghp:P:st:v"))) {
+ switch (c) {
+ case 'a':
+ oneshot = atoi(optarg);
+ break;
+ case 'A':
+ periodic = atoi(optarg);
+ break;
+ case 'c':
+ capabilities = 1;
+ break;
+ case 'd':
+ device = optarg;
+ break;
+ case 'e':
+ extts = atoi(optarg);
+ break;
+ case 'f':
+ adjfreq = atoi(optarg);
+ break;
+ case 'g':
+ gettime = 1;
+ break;
+ case 'p':
+ perout = atoi(optarg);
+ break;
+ case 'P':
+ pps = atoi(optarg);
+ break;
+ case 's':
+ settime = 1;
+ break;
+ case 't':
+ adjtime = atoi(optarg);
+ break;
+ case 'h':
+ usage(progname);
+ return 0;
+ case '?':
+ default:
+ usage(progname);
+ return -1;
+ }
+ }
+
+ fd = open(device, O_RDWR);
+ if (fd < 0) {
+ fprintf(stderr, "opening %s: %s\n", device, strerror(errno));
+ return -1;
+ }
+
+ clkid = get_clockid(fd);
+ if (CLOCK_INVALID == clkid) {
+ fprintf(stderr, "failed to read clock id\n");
+ return -1;
+ }
+
+ if (capabilities) {
+ if (ioctl(fd, PTP_CLOCK_GETCAPS, &caps)) {
+ perror("PTP_CLOCK_GETCAPS");
+ } else {
+ printf("capabilities:\n"
+ " %d maximum frequency adjustment (ppb)\n"
+ " %d programmable alarms\n"
+ " %d external time stamp channels\n"
+ " %d programmable periodic signals\n"
+ " %d pulse per second\n",
+ caps.max_adj,
+ caps.n_alarm,
+ caps.n_ext_ts,
+ caps.n_per_out,
+ caps.pps);
+ }
+ }
+
+ if (0x7fffffff != adjfreq) {
+ memset(&tx, 0, sizeof(tx));
+ tx.modes = ADJ_FREQUENCY;
+ tx.freq = ppb_to_scaled_ppm(adjfreq);
+ if (clock_adjtime(clkid, &tx)) {
+ perror("clock_adjtime");
+ } else {
+ puts("frequency adjustment okay");
+ }
+ }
+
+ if (adjtime) {
+ memset(&tx, 0, sizeof(tx));
+ tx.modes = ADJ_SETOFFSET;
+ tx.time.tv_sec = adjtime;
+ tx.time.tv_usec = 0;
+ if (clock_adjtime(clkid, &tx) < 0) {
+ perror("clock_adjtime");
+ } else {
+ puts("time shift okay");
+ }
+ }
+
+ if (gettime) {
+ if (clock_gettime(clkid, &ts)) {
+ perror("clock_gettime");
+ } else {
+ printf("clock time: %ld.%09ld or %s",
+ ts.tv_sec, ts.tv_nsec, ctime(&ts.tv_sec));
+ }
+ }
+
+ if (settime) {
+ clock_gettime(CLOCK_REALTIME, &ts);
+ if (clock_settime(clkid, &ts)) {
+ perror("clock_settime");
+ } else {
+ puts("set time okay");
+ }
+ }
+
+ if (extts) {
+ memset(&extts_request, 0, sizeof(extts_request));
+ extts_request.index = 0;
+ extts_request.flags = PTP_ENABLE_FEATURE;
+ if (ioctl(fd, PTP_EXTTS_REQUEST, &extts_request)) {
+ perror("PTP_EXTTS_REQUEST");
+ extts = 0;
+ } else {
+ puts("external time stamp request okay");
+ }
+ for (; extts; extts--) {
+ cnt = read(fd, &event, sizeof(event));
+ if (cnt != sizeof(event)) {
+ perror("read");
+ break;
+ }
+ printf("event index %u at %lld.%09u\n", event.index,
+ event.t.sec, event.t.nsec);
+ fflush(stdout);
+ }
+ /* Disable the feature again. */
+ extts_request.flags = 0;
+ if (ioctl(fd, PTP_EXTTS_REQUEST, &extts_request)) {
+ perror("PTP_EXTTS_REQUEST");
+ }
+ }
+
+ if (oneshot) {
+ install_handler(SIGALRM, handle_alarm);
+ /* Create a timer. */
+ sigevent.sigev_notify = SIGEV_SIGNAL;
+ sigevent.sigev_signo = SIGALRM;
+ if (timer_create(clkid, &sigevent, &timerid)) {
+ perror("timer_create");
+ return -1;
+ }
+ /* Start the timer. */
+ memset(&timeout, 0, sizeof(timeout));
+ timeout.it_value.tv_sec = oneshot;
+ if (timer_settime(timerid, 0, &timeout, NULL)) {
+ perror("timer_settime");
+ return -1;
+ }
+ pause();
+ timer_delete(timerid);
+ }
+
+ if (periodic) {
+ install_handler(SIGALRM, handle_alarm);
+ /* Create a timer. */
+ sigevent.sigev_notify = SIGEV_SIGNAL;
+ sigevent.sigev_signo = SIGALRM;
+ if (timer_create(clkid, &sigevent, &timerid)) {
+ perror("timer_create");
+ return -1;
+ }
+ /* Start the timer. */
+ memset(&timeout, 0, sizeof(timeout));
+ timeout.it_interval.tv_sec = periodic;
+ timeout.it_value.tv_sec = periodic;
+ if (timer_settime(timerid, 0, &timeout, NULL)) {
+ perror("timer_settime");
+ return -1;
+ }
+ while (1) {
+ pause();
+ }
+ timer_delete(timerid);
+ }
+
+ if (perout >= 0) {
+ if (clock_gettime(clkid, &ts)) {
+ perror("clock_gettime");
+ return -1;
+ }
+ memset(&perout_request, 0, sizeof(perout_request));
+ perout_request.index = 0;
+ perout_request.start.sec = ts.tv_sec + 2;
+ perout_request.start.nsec = 0;
+ perout_request.period.sec = 0;
+ perout_request.period.nsec = perout;
+ if (ioctl(fd, PTP_PEROUT_REQUEST, &perout_request)) {
+ perror("PTP_PEROUT_REQUEST");
+ } else {
+ puts("periodic output request okay");
+ }
+ }
+
+ if (pps != -1) {
+ int enable = pps ? 1 : 0;
+ if (ioctl(fd, PTP_ENABLE_PPS, enable)) {
+ perror("PTP_ENABLE_PPS");
+ } else {
+ puts("pps for system time request okay");
+ }
+ }
+
+ close(fd);
+ return 0;
+}
diff --git a/Documentation/ptp/testptp.mk b/Documentation/ptp/testptp.mk
new file mode 100644
index 0000000..4ef2d97
--- /dev/null
+++ b/Documentation/ptp/testptp.mk
@@ -0,0 +1,33 @@
+# PTP 1588 clock support - User space test program
+#
+# Copyright (C) 2010 OMICRON electronics GmbH
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+CC = $(CROSS_COMPILE)gcc
+INC = -I$(KBUILD_OUTPUT)/usr/include
+CFLAGS = -Wall $(INC)
+LDLIBS = -lrt
+PROGS = testptp
+
+all: $(PROGS)
+
+testptp: testptp.o
+
+clean:
+ rm -f testptp.o
+
+distclean: clean
+ rm -f $(PROGS)
diff --git a/drivers/Kconfig b/drivers/Kconfig
index 177c7d1..6fd7446 100644
--- a/drivers/Kconfig
+++ b/drivers/Kconfig
@@ -54,6 +54,8 @@ source "drivers/spi/Kconfig"
source "drivers/pps/Kconfig"
+source "drivers/ptp/Kconfig"
+
source "drivers/gpio/Kconfig"
source "drivers/w1/Kconfig"
diff --git a/drivers/Makefile b/drivers/Makefile
index 3f135b6..71ebbf9 100644
--- a/drivers/Makefile
+++ b/drivers/Makefile
@@ -76,6 +76,7 @@ obj-$(CONFIG_I2O) += message/
obj-$(CONFIG_RTC_LIB) += rtc/
obj-y += i2c/ media/
obj-$(CONFIG_PPS) += pps/
+obj-$(CONFIG_PTP_1588_CLOCK) += ptp/
obj-$(CONFIG_W1) += w1/
obj-$(CONFIG_POWER_SUPPLY) += power/
obj-$(CONFIG_HWMON) += hwmon/
diff --git a/drivers/ptp/Kconfig b/drivers/ptp/Kconfig
new file mode 100644
index 0000000..70d4bb1
--- /dev/null
+++ b/drivers/ptp/Kconfig
@@ -0,0 +1,30 @@
+#
+# PTP clock support configuration
+#
+
+menu "PTP clock support"
+
+comment "Enable Device Drivers -> PPS to see the PTP clock options."
+ depends on PPS=n
+
+config PTP_1588_CLOCK
+ tristate "PTP clock support"
+ depends on EXPERIMENTAL
+ depends on PPS
+ help
+ The IEEE 1588 standard defines a method to precisely
+ synchronize distributed clocks over Ethernet networks. The
+ standard defines a Precision Time Protocol (PTP), which can
+ be used to achieve synchronization within a few dozen
+ microseconds. In addition, with the help of special hardware
+ time stamping units, it can be possible to achieve
+ synchronization to within a few hundred nanoseconds.
+
+ This driver adds support for PTP clocks as character
+ devices. If you want to use a PTP clock, then you should
+ also enable at least one clock driver as well.
+
+ To compile this driver as a module, choose M here: the module
+ will be called ptp.
+
+endmenu
diff --git a/drivers/ptp/Makefile b/drivers/ptp/Makefile
new file mode 100644
index 0000000..480e2af
--- /dev/null
+++ b/drivers/ptp/Makefile
@@ -0,0 +1,6 @@
+#
+# Makefile for PTP 1588 clock support.
+#
+
+ptp-y := ptp_clock.o ptp_chardev.o ptp_sysfs.o
+obj-$(CONFIG_PTP_1588_CLOCK) += ptp.o
diff --git a/drivers/ptp/ptp_chardev.c b/drivers/ptp/ptp_chardev.c
new file mode 100644
index 0000000..1005987
--- /dev/null
+++ b/drivers/ptp/ptp_chardev.c
@@ -0,0 +1,155 @@
+/*
+ * PTP 1588 clock support - character device implementation.
+ *
+ * Copyright (C) 2010 OMICRON electronics GmbH
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+#include <linux/module.h>
+#include <linux/posix-clock.h>
+#include <linux/poll.h>
+#include <linux/sched.h>
+
+#include "ptp_private.h"
+
+int ptp_open(struct posix_clock *pc, fmode_t fmode)
+{
+ return 0;
+}
+
+long ptp_ioctl(struct posix_clock *pc, unsigned int cmd, unsigned long arg)
+{
+ struct ptp_clock_caps caps;
+ struct ptp_clock_request req;
+ struct ptp_clock *ptp = container_of(pc, struct ptp_clock, clock);
+ struct ptp_clock_info *ops = ptp->info;
+ int enable, err = 0;
+
+ switch (cmd) {
+
+ case PTP_CLOCK_GETCAPS:
+ memset(&caps, 0, sizeof(caps));
+ caps.max_adj = ptp->info->max_adj;
+ caps.n_alarm = ptp->info->n_alarm;
+ caps.n_ext_ts = ptp->info->n_ext_ts;
+ caps.n_per_out = ptp->info->n_per_out;
+ caps.pps = ptp->info->pps;
+ err = copy_to_user((void __user *)arg, &caps, sizeof(caps));
+ break;
+
+ case PTP_EXTTS_REQUEST:
+ if (copy_from_user(&req.extts, (void __user *)arg,
+ sizeof(req.extts))) {
+ err = -EFAULT;
+ break;
+ }
+ if (req.extts.index >= ops->n_ext_ts) {
+ err = -EINVAL;
+ break;
+ }
+ req.type = PTP_CLK_REQ_EXTTS;
+ enable = req.extts.flags & PTP_ENABLE_FEATURE ? 1 : 0;
+ err = ops->enable(ops, &req, enable);
+ break;
+
+ case PTP_PEROUT_REQUEST:
+ if (copy_from_user(&req.perout, (void __user *)arg,
+ sizeof(req.perout))) {
+ err = -EFAULT;
+ break;
+ }
+ if (req.perout.index >= ops->n_per_out) {
+ err = -EINVAL;
+ break;
+ }
+ req.type = PTP_CLK_REQ_PEROUT;
+ enable = req.perout.period.sec || req.perout.period.nsec;
+ err = ops->enable(ops, &req, enable);
+ break;
+
+ case PTP_ENABLE_PPS:
+ if (!capable(CAP_SYS_TIME))
+ return -EPERM;
+ req.type = PTP_CLK_REQ_PPS;
+ enable = arg ? 1 : 0;
+ err = ops->enable(ops, &req, enable);
+ break;
+
+ default:
+ err = -ENOTTY;
+ break;
+ }
+ return err;
+}
+
+unsigned int ptp_poll(struct posix_clock *pc, struct file *fp, poll_table *wait)
+{
+ struct ptp_clock *ptp = container_of(pc, struct ptp_clock, clock);
+
+ poll_wait(fp, &ptp->tsev_wq, wait);
+
+ return queue_cnt(&ptp->tsevq) ? POLLIN : 0;
+}
+
+ssize_t ptp_read(struct posix_clock *pc,
+ uint rdflags, char __user *buf, size_t cnt)
+{
+ struct ptp_clock *ptp = container_of(pc, struct ptp_clock, clock);
+ struct timestamp_event_queue *queue = &ptp->tsevq;
+ struct ptp_extts_event event[PTP_BUF_TIMESTAMPS];
+ unsigned long flags;
+ size_t qcnt, i;
+
+ if (cnt % sizeof(struct ptp_extts_event) != 0)
+ return -EINVAL;
+
+ if (cnt > sizeof(event))
+ cnt = sizeof(event);
+
+ cnt = cnt / sizeof(struct ptp_extts_event);
+
+ if (mutex_lock_interruptible(&ptp->tsevq_mux))
+ return -ERESTARTSYS;
+
+ if (wait_event_interruptible(ptp->tsev_wq, queue_cnt(queue))) {
+ mutex_unlock(&ptp->tsevq_mux);
+ return -ERESTARTSYS;
+ }
+
+ spin_lock_irqsave(&queue->lock, flags);
+
+ qcnt = queue_cnt(queue);
+
+ if (cnt > qcnt)
+ cnt = qcnt;
+
+ for (i = 0; i < cnt; i++) {
+ event[i] = queue->buf[queue->head];
+ queue->head = (queue->head + 1) % PTP_MAX_TIMESTAMPS;
+ }
+
+ spin_unlock_irqrestore(&queue->lock, flags);
+
+ cnt = cnt * sizeof(struct ptp_extts_event);
+
+ mutex_unlock(&ptp->tsevq_mux);
+
+ if (copy_to_user(buf, event, cnt)) {
+ mutex_unlock(&ptp->tsevq_mux);
+ return -EFAULT;
+ }
+
+ return cnt;
+}
diff --git a/drivers/ptp/ptp_clock.c b/drivers/ptp/ptp_clock.c
new file mode 100644
index 0000000..ef42a11
--- /dev/null
+++ b/drivers/ptp/ptp_clock.c
@@ -0,0 +1,339 @@
+/*
+ * PTP 1588 clock support
+ *
+ * Copyright (C) 2010 OMICRON electronics GmbH
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+#include <linux/bitops.h>
+#include <linux/device.h>
+#include <linux/err.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/posix-clock.h>
+#include <linux/pps_kernel.h>
+#include <linux/slab.h>
+#include <linux/syscalls.h>
+#include <linux/uaccess.h>
+
+#include "ptp_private.h"
+
+#define PTP_MAX_ALARMS 4
+#define PTP_MAX_CLOCKS 8
+#define PTP_PPS_DEFAULTS (PPS_CAPTUREASSERT | PPS_OFFSETASSERT)
+#define PTP_PPS_EVENT PPS_CAPTUREASSERT
+#define PTP_PPS_MODE (PTP_PPS_DEFAULTS | PPS_CANWAIT | PPS_TSFMT_TSPEC)
+
+/* private globals */
+
+static dev_t ptp_devt;
+static struct class *ptp_class;
+
+static DECLARE_BITMAP(ptp_clocks_map, PTP_MAX_CLOCKS);
+static DEFINE_MUTEX(ptp_clocks_mutex); /* protects 'ptp_clocks_map' */
+
+/* time stamp event queue operations */
+
+static inline int queue_free(struct timestamp_event_queue *q)
+{
+ return PTP_MAX_TIMESTAMPS - queue_cnt(q) - 1;
+}
+
+static void enqueue_external_timestamp(struct timestamp_event_queue *queue,
+ struct ptp_clock_event *src)
+{
+ struct ptp_extts_event *dst;
+ unsigned long flags;
+ s64 seconds;
+ u32 remainder;
+
+ seconds = div_u64_rem(src->timestamp, 1000000000, &remainder);
+
+ spin_lock_irqsave(&queue->lock, flags);
+
+ dst = &queue->buf[queue->tail];
+ dst->index = src->index;
+ dst->t.sec = seconds;
+ dst->t.nsec = remainder;
+
+ if (!queue_free(queue))
+ queue->head = (queue->head + 1) % PTP_MAX_TIMESTAMPS;
+
+ queue->tail = (queue->tail + 1) % PTP_MAX_TIMESTAMPS;
+
+ spin_unlock_irqrestore(&queue->lock, flags);
+}
+
+static s32 scaled_ppm_to_ppb(long ppm)
+{
+ /*
+ * The 'freq' field in the 'struct timex' is in parts per
+ * million, but with a 16 bit binary fractional field.
+ *
+ * We want to calculate
+ *
+ * ppb = scaled_ppm * 1000 / 2^16
+ *
+ * which simplifies to
+ *
+ * ppb = scaled_ppm * 125 / 2^13
+ */
+ s64 ppb = 1 + ppm;
+ ppb *= 125;
+ ppb >>= 13;
+ return (s32) ppb;
+}
+
+/* posix clock implementation */
+
+static int ptp_clock_getres(struct posix_clock *pc, struct timespec *tp)
+{
+ return 1; /* always round timer functions to one nanosecond */
+}
+
+static int ptp_clock_settime(struct posix_clock *pc, const struct timespec *tp)
+{
+ struct ptp_clock *ptp = container_of(pc, struct ptp_clock, clock);
+ return ptp->info->settime(ptp->info, tp);
+}
+
+static int ptp_clock_gettime(struct posix_clock *pc, struct timespec *tp)
+{
+ struct ptp_clock *ptp = container_of(pc, struct ptp_clock, clock);
+ return ptp->info->gettime(ptp->info, tp);
+}
+
+static int ptp_clock_adjtime(struct posix_clock *pc, struct timex *tx)
+{
+ struct ptp_clock *ptp = container_of(pc, struct ptp_clock, clock);
+ struct ptp_clock_info *ops;
+ int err = -EOPNOTSUPP;
+
+ ops = ptp->info;
+
+ if (tx->modes & ADJ_SETOFFSET) {
+ struct timespec ts;
+ ktime_t kt;
+ s64 delta;
+
+ ts.tv_sec = tx->time.tv_sec;
+ ts.tv_nsec = tx->time.tv_usec;
+
+ if (!(tx->modes & ADJ_NANO))
+ ts.tv_nsec *= 1000;
+
+ if ((unsigned long) ts.tv_nsec >= NSEC_PER_SEC)
+ return -EINVAL;
+
+ kt = timespec_to_ktime(ts);
+ delta = ktime_to_ns(kt);
+ err = ops->adjtime(ops, delta);
+
+ } else if (tx->modes & ADJ_FREQUENCY) {
+
+ err = ops->adjfreq(ops, scaled_ppm_to_ppb(tx->freq));
+ }
+
+ return err;
+}
+
+static struct posix_clock_operations ptp_clock_ops = {
+ .owner = THIS_MODULE,
+ .clock_adjtime = ptp_clock_adjtime,
+ .clock_gettime = ptp_clock_gettime,
+ .clock_getres = ptp_clock_getres,
+ .clock_settime = ptp_clock_settime,
+ .ioctl = ptp_ioctl,
+ .open = ptp_open,
+ .poll = ptp_poll,
+ .read = ptp_read,
+};
+
+static void delete_ptp_clock(struct posix_clock *pc)
+{
+ struct ptp_clock *ptp = container_of(pc, struct ptp_clock, clock);
+
+ /* Release the clock's resources. */
+ if (ptp->info->pps)
+ pps_unregister_source(ptp->pps_source);
+ ptp_cleanup_sysfs(ptp);
+ device_destroy(ptp_class, ptp->devid);
+ mutex_destroy(&ptp->tsevq_mux);
+
+ /* Remove the clock from the bit map. */
+ mutex_lock(&ptp_clocks_mutex);
+ clear_bit(ptp->index, ptp_clocks_map);
+ mutex_unlock(&ptp_clocks_mutex);
+
+ kfree(ptp);
+}
+
+/* public interface */
+
+struct ptp_clock *ptp_clock_register(struct ptp_clock_info *info)
+{
+ struct ptp_clock *ptp;
+ int err = 0, index, major = MAJOR(ptp_devt);
+
+ if (info->n_alarm > PTP_MAX_ALARMS)
+ return ERR_PTR(-EINVAL);
+
+ /* Find a free clock slot and reserve it. */
+ err = -EBUSY;
+ mutex_lock(&ptp_clocks_mutex);
+ index = find_first_zero_bit(ptp_clocks_map, PTP_MAX_CLOCKS);
+ if (index < PTP_MAX_CLOCKS)
+ set_bit(index, ptp_clocks_map);
+ else
+ goto no_slot;
+
+ /* Initialize a clock structure. */
+ err = -ENOMEM;
+ ptp = kzalloc(sizeof(struct ptp_clock), GFP_KERNEL);
+ if (ptp == NULL)
+ goto no_memory;
+
+ ptp->clock.ops = ptp_clock_ops;
+ ptp->clock.release = delete_ptp_clock;
+ ptp->info = info;
+ ptp->devid = MKDEV(major, index);
+ ptp->index = index;
+ spin_lock_init(&ptp->tsevq.lock);
+ mutex_init(&ptp->tsevq_mux);
+ init_waitqueue_head(&ptp->tsev_wq);
+
+ /* Create a new device in our class. */
+ ptp->dev = device_create(ptp_class, NULL, ptp->devid, ptp,
+ "ptp%d", ptp->index);
+ if (IS_ERR(ptp->dev))
+ goto no_device;
+
+ dev_set_drvdata(ptp->dev, ptp);
+
+ err = ptp_populate_sysfs(ptp);
+ if (err)
+ goto no_sysfs;
+
+ /* Register a new PPS source. */
+ if (info->pps) {
+ struct pps_source_info pps;
+ memset(&pps, 0, sizeof(pps));
+ snprintf(pps.name, PPS_MAX_NAME_LEN, "ptp%d", index);
+ pps.mode = PTP_PPS_MODE;
+ pps.owner = info->owner;
+ ptp->pps_source = pps_register_source(&pps, PTP_PPS_DEFAULTS);
+ if (!ptp->pps_source) {
+ pr_err("failed to register pps source\n");
+ goto no_pps;
+ }
+ }
+
+ /* Create a posix clock. */
+ err = posix_clock_register(&ptp->clock, ptp->devid);
+ if (err) {
+ pr_err("failed to create posix clock\n");
+ goto no_clock;
+ }
+
+ mutex_unlock(&ptp_clocks_mutex);
+ return ptp;
+
+no_clock:
+ if (ptp->info->pps)
+ pps_unregister_source(ptp->pps_source);
+no_pps:
+ ptp_cleanup_sysfs(ptp);
+no_sysfs:
+ device_destroy(ptp_class, ptp->devid);
+no_device:
+ mutex_destroy(&ptp->tsevq_mux);
+ kfree(ptp);
+no_memory:
+ clear_bit(index, ptp_clocks_map);
+no_slot:
+ mutex_unlock(&ptp_clocks_mutex);
+ return ERR_PTR(err);
+}
+EXPORT_SYMBOL(ptp_clock_register);
+
+int ptp_clock_unregister(struct ptp_clock *ptp)
+{
+ posix_clock_unregister(&ptp->clock);
+ return 0;
+}
+EXPORT_SYMBOL(ptp_clock_unregister);
+
+void ptp_clock_event(struct ptp_clock *ptp, struct ptp_clock_event *event)
+{
+ struct pps_event_time evt;
+
+ switch (event->type) {
+
+ case PTP_CLOCK_ALARM:
+ break;
+
+ case PTP_CLOCK_EXTTS:
+ enqueue_external_timestamp(&ptp->tsevq, event);
+ wake_up_interruptible(&ptp->tsev_wq);
+ break;
+
+ case PTP_CLOCK_PPS:
+ pps_get_ts(&evt);
+ pps_event(ptp->pps_source, &evt, PTP_PPS_EVENT, NULL);
+ break;
+ }
+}
+EXPORT_SYMBOL(ptp_clock_event);
+
+/* module operations */
+
+static void __exit ptp_exit(void)
+{
+ class_destroy(ptp_class);
+ unregister_chrdev_region(ptp_devt, PTP_MAX_CLOCKS);
+}
+
+static int __init ptp_init(void)
+{
+ int err;
+
+ ptp_class = class_create(THIS_MODULE, "ptp");
+ if (IS_ERR(ptp_class)) {
+ pr_err("ptp: failed to allocate class\n");
+ return PTR_ERR(ptp_class);
+ }
+
+ err = alloc_chrdev_region(&ptp_devt, 0, PTP_MAX_CLOCKS, "ptp");
+ if (err < 0) {
+ pr_err("ptp: failed to allocate device region\n");
+ goto no_region;
+ }
+
+ ptp_class->dev_attrs = ptp_dev_attrs;
+ pr_info("PTP clock support registered\n");
+ return 0;
+
+no_region:
+ class_destroy(ptp_class);
+ return err;
+}
+
+subsys_initcall(ptp_init);
+module_exit(ptp_exit);
+
+MODULE_AUTHOR("Richard Cochran <richard.cochran@omicron.at>");
+MODULE_DESCRIPTION("PTP clocks support");
+MODULE_LICENSE("GPL");
diff --git a/drivers/ptp/ptp_private.h b/drivers/ptp/ptp_private.h
new file mode 100644
index 0000000..04fff62
--- /dev/null
+++ b/drivers/ptp/ptp_private.h
@@ -0,0 +1,91 @@
+/*
+ * PTP 1588 clock support - private declarations for the core module.
+ *
+ * Copyright (C) 2010 OMICRON electronics GmbH
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+#ifndef _PTP_PRIVATE_H_
+#define _PTP_PRIVATE_H_
+
+#include <linux/cdev.h>
+#include <linux/device.h>
+#include <linux/mutex.h>
+#include <linux/posix-clock.h>
+#include <linux/ptp_clock.h>
+#include <linux/ptp_clock_kernel.h>
+#include <linux/time.h>
+
+#define PTP_MAX_TIMESTAMPS 128
+#define PTP_BUF_TIMESTAMPS 30
+
+struct timestamp_event_queue {
+ struct ptp_extts_event buf[PTP_MAX_TIMESTAMPS];
+ int head;
+ int tail;
+ spinlock_t lock;
+};
+
+struct ptp_clock {
+ struct posix_clock clock;
+ struct device *dev;
+ struct ptp_clock_info *info;
+ dev_t devid;
+ int index; /* index into clocks.map */
+ struct pps_device *pps_source;
+ struct timestamp_event_queue tsevq; /* simple fifo for time stamps */
+ struct mutex tsevq_mux; /* one process at a time reading the fifo */
+ wait_queue_head_t tsev_wq;
+};
+
+/*
+ * The function queue_cnt() is safe for readers to call without
+ * holding q->lock. Readers use this function to verify that the queue
+ * is nonempty before proceeding with a dequeue operation. The fact
+ * that a writer might concurrently increment the tail does not
+ * matter, since the queue remains nonempty nonetheless.
+ */
+static inline int queue_cnt(struct timestamp_event_queue *q)
+{
+ int cnt = q->tail - q->head;
+ return cnt < 0 ? PTP_MAX_TIMESTAMPS + cnt : cnt;
+}
+
+/*
+ * see ptp_chardev.c
+ */
+
+long ptp_ioctl(struct posix_clock *pc,
+ unsigned int cmd, unsigned long arg);
+
+int ptp_open(struct posix_clock *pc, fmode_t fmode);
+
+ssize_t ptp_read(struct posix_clock *pc,
+ uint flags, char __user *buf, size_t cnt);
+
+uint ptp_poll(struct posix_clock *pc,
+ struct file *fp, poll_table *wait);
+
+/*
+ * see ptp_sysfs.c
+ */
+
+extern struct device_attribute ptp_dev_attrs[];
+
+int ptp_cleanup_sysfs(struct ptp_clock *ptp);
+
+int ptp_populate_sysfs(struct ptp_clock *ptp);
+
+#endif
diff --git a/drivers/ptp/ptp_sysfs.c b/drivers/ptp/ptp_sysfs.c
new file mode 100644
index 0000000..2f93926
--- /dev/null
+++ b/drivers/ptp/ptp_sysfs.c
@@ -0,0 +1,230 @@
+/*
+ * PTP 1588 clock support - sysfs interface.
+ *
+ * Copyright (C) 2010 OMICRON electronics GmbH
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+#include <linux/capability.h>
+
+#include "ptp_private.h"
+
+static ssize_t clock_name_show(struct device *dev,
+ struct device_attribute *attr, char *page)
+{
+ struct ptp_clock *ptp = dev_get_drvdata(dev);
+ return snprintf(page, PAGE_SIZE-1, "%s\n", ptp->info->name);
+}
+
+#define PTP_SHOW_INT(name) \
+static ssize_t name##_show(struct device *dev, \
+ struct device_attribute *attr, char *page) \
+{ \
+ struct ptp_clock *ptp = dev_get_drvdata(dev); \
+ return snprintf(page, PAGE_SIZE-1, "%d\n", ptp->info->name); \
+}
+
+PTP_SHOW_INT(max_adj);
+PTP_SHOW_INT(n_alarm);
+PTP_SHOW_INT(n_ext_ts);
+PTP_SHOW_INT(n_per_out);
+PTP_SHOW_INT(pps);
+
+#define PTP_RO_ATTR(_var, _name) { \
+ .attr = { .name = __stringify(_name), .mode = 0444 }, \
+ .show = _var##_show, \
+}
+
+struct device_attribute ptp_dev_attrs[] = {
+ PTP_RO_ATTR(clock_name, clock_name),
+ PTP_RO_ATTR(max_adj, max_adjustment),
+ PTP_RO_ATTR(n_alarm, n_alarms),
+ PTP_RO_ATTR(n_ext_ts, n_external_timestamps),
+ PTP_RO_ATTR(n_per_out, n_periodic_outputs),
+ PTP_RO_ATTR(pps, pps_available),
+ __ATTR_NULL,
+};
+
+static ssize_t extts_enable_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct ptp_clock *ptp = dev_get_drvdata(dev);
+ struct ptp_clock_info *ops = ptp->info;
+ struct ptp_clock_request req = { .type = PTP_CLK_REQ_EXTTS };
+ int cnt, enable;
+ int err = -EINVAL;
+
+ cnt = sscanf(buf, "%u %d", &req.extts.index, &enable);
+ if (cnt != 2)
+ goto out;
+ if (req.extts.index >= ops->n_ext_ts)
+ goto out;
+
+ err = ops->enable(ops, &req, enable ? 1 : 0);
+ if (err)
+ goto out;
+
+ return count;
+out:
+ return err;
+}
+
+static ssize_t extts_fifo_show(struct device *dev,
+ struct device_attribute *attr, char *page)
+{
+ struct ptp_clock *ptp = dev_get_drvdata(dev);
+ struct timestamp_event_queue *queue = &ptp->tsevq;
+ struct ptp_extts_event event;
+ unsigned long flags;
+ size_t qcnt;
+ int cnt = 0;
+
+ memset(&event, 0, sizeof(event));
+
+ if (mutex_lock_interruptible(&ptp->tsevq_mux))
+ return -ERESTARTSYS;
+
+ spin_lock_irqsave(&queue->lock, flags);
+ qcnt = queue_cnt(queue);
+ if (qcnt) {
+ event = queue->buf[queue->head];
+ queue->head = (queue->head + 1) % PTP_MAX_TIMESTAMPS;
+ }
+ spin_unlock_irqrestore(&queue->lock, flags);
+
+ if (!qcnt)
+ goto out;
+
+ cnt = snprintf(page, PAGE_SIZE, "%u %lld %u\n",
+ event.index, event.t.sec, event.t.nsec);
+out:
+ mutex_unlock(&ptp->tsevq_mux);
+ return cnt;
+}
+
+static ssize_t period_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct ptp_clock *ptp = dev_get_drvdata(dev);
+ struct ptp_clock_info *ops = ptp->info;
+ struct ptp_clock_request req = { .type = PTP_CLK_REQ_PEROUT };
+ int cnt, enable, err = -EINVAL;
+
+ cnt = sscanf(buf, "%u %lld %u %lld %u", &req.perout.index,
+ &req.perout.start.sec, &req.perout.start.nsec,
+ &req.perout.period.sec, &req.perout.period.nsec);
+ if (cnt != 5)
+ goto out;
+ if (req.perout.index >= ops->n_per_out)
+ goto out;
+
+ enable = req.perout.period.sec || req.perout.period.nsec;
+ err = ops->enable(ops, &req, enable);
+ if (err)
+ goto out;
+
+ return count;
+out:
+ return err;
+}
+
+static ssize_t pps_enable_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct ptp_clock *ptp = dev_get_drvdata(dev);
+ struct ptp_clock_info *ops = ptp->info;
+ struct ptp_clock_request req = { .type = PTP_CLK_REQ_PPS };
+ int cnt, enable;
+ int err = -EINVAL;
+
+ if (!capable(CAP_SYS_TIME))
+ return -EPERM;
+
+ cnt = sscanf(buf, "%d", &enable);
+ if (cnt != 1)
+ goto out;
+
+ err = ops->enable(ops, &req, enable ? 1 : 0);
+ if (err)
+ goto out;
+
+ return count;
+out:
+ return err;
+}
+
+static DEVICE_ATTR(extts_enable, 0220, NULL, extts_enable_store);
+static DEVICE_ATTR(fifo, 0444, extts_fifo_show, NULL);
+static DEVICE_ATTR(period, 0220, NULL, period_store);
+static DEVICE_ATTR(pps_enable, 0220, NULL, pps_enable_store);
+
+int ptp_cleanup_sysfs(struct ptp_clock *ptp)
+{
+ struct device *dev = ptp->dev;
+ struct ptp_clock_info *info = ptp->info;
+
+ if (info->n_ext_ts) {
+ device_remove_file(dev, &dev_attr_extts_enable);
+ device_remove_file(dev, &dev_attr_fifo);
+ }
+ if (info->n_per_out)
+ device_remove_file(dev, &dev_attr_period);
+
+ if (info->pps)
+ device_remove_file(dev, &dev_attr_pps_enable);
+
+ return 0;
+}
+
+int ptp_populate_sysfs(struct ptp_clock *ptp)
+{
+ struct device *dev = ptp->dev;
+ struct ptp_clock_info *info = ptp->info;
+ int err;
+
+ if (info->n_ext_ts) {
+ err = device_create_file(dev, &dev_attr_extts_enable);
+ if (err)
+ goto out1;
+ err = device_create_file(dev, &dev_attr_fifo);
+ if (err)
+ goto out2;
+ }
+ if (info->n_per_out) {
+ err = device_create_file(dev, &dev_attr_period);
+ if (err)
+ goto out3;
+ }
+ if (info->pps) {
+ err = device_create_file(dev, &dev_attr_pps_enable);
+ if (err)
+ goto out4;
+ }
+ return 0;
+out4:
+ if (info->n_per_out)
+ device_remove_file(dev, &dev_attr_period);
+out3:
+ if (info->n_ext_ts)
+ device_remove_file(dev, &dev_attr_fifo);
+out2:
+ if (info->n_ext_ts)
+ device_remove_file(dev, &dev_attr_extts_enable);
+out1:
+ return err;
+}
diff --git a/include/linux/Kbuild b/include/linux/Kbuild
index 75cf611..4585836 100644
--- a/include/linux/Kbuild
+++ b/include/linux/Kbuild
@@ -302,6 +302,7 @@ header-y += ppp-comp.h
header-y += ppp_defs.h
header-y += pps.h
header-y += prctl.h
+header-y += ptp_clock.h
header-y += ptrace.h
header-y += qnx4_fs.h
header-y += qnxtypes.h
diff --git a/include/linux/ptp_clock.h b/include/linux/ptp_clock.h
new file mode 100644
index 0000000..94e981f
--- /dev/null
+++ b/include/linux/ptp_clock.h
@@ -0,0 +1,84 @@
+/*
+ * PTP 1588 clock support - user space interface
+ *
+ * Copyright (C) 2010 OMICRON electronics GmbH
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#ifndef _PTP_CLOCK_H_
+#define _PTP_CLOCK_H_
+
+#include <linux/ioctl.h>
+#include <linux/types.h>
+
+/* PTP_xxx bits, for the flags field within the request structures. */
+#define PTP_ENABLE_FEATURE (1<<0)
+#define PTP_RISING_EDGE (1<<1)
+#define PTP_FALLING_EDGE (1<<2)
+
+/*
+ * struct ptp_clock_time - represents a time value
+ *
+ * The sign of the seconds field applies to the whole value. The
+ * nanoseconds field is always unsigned. The reserved field is
+ * included for sub-nanosecond resolution, should the demand for
+ * this ever appear.
+ *
+ */
+struct ptp_clock_time {
+ __s64 sec; /* seconds */
+ __u32 nsec; /* nanoseconds */
+ __u32 reserved;
+};
+
+struct ptp_clock_caps {
+ int max_adj; /* Maximum frequency adjustment in parts per billon. */
+ int n_alarm; /* Number of programmable alarms. */
+ int n_ext_ts; /* Number of external time stamp channels. */
+ int n_per_out; /* Number of programmable periodic signals. */
+ int pps; /* Whether the clock supports a PPS callback. */
+ int rsv[15]; /* Reserved for future use. */
+};
+
+struct ptp_extts_request {
+ unsigned int index; /* Which channel to configure. */
+ unsigned int flags; /* Bit field for PTP_xxx flags. */
+ unsigned int rsv[2]; /* Reserved for future use. */
+};
+
+struct ptp_perout_request {
+ struct ptp_clock_time start; /* Absolute start time. */
+ struct ptp_clock_time period; /* Desired period, zero means disable. */
+ unsigned int index; /* Which channel to configure. */
+ unsigned int flags; /* Reserved for future use. */
+ unsigned int rsv[4]; /* Reserved for future use. */
+};
+
+#define PTP_CLK_MAGIC '='
+
+#define PTP_CLOCK_GETCAPS _IOR(PTP_CLK_MAGIC, 1, struct ptp_clock_caps)
+#define PTP_EXTTS_REQUEST _IOW(PTP_CLK_MAGIC, 2, struct ptp_extts_request)
+#define PTP_PEROUT_REQUEST _IOW(PTP_CLK_MAGIC, 3, struct ptp_perout_request)
+#define PTP_ENABLE_PPS _IOW(PTP_CLK_MAGIC, 4, int)
+
+struct ptp_extts_event {
+ struct ptp_clock_time t; /* Time event occured. */
+ unsigned int index; /* Which channel produced the event. */
+ unsigned int flags; /* Reserved for future use. */
+ unsigned int rsv[2]; /* Reserved for future use. */
+};
+
+#endif
diff --git a/include/linux/ptp_clock_kernel.h b/include/linux/ptp_clock_kernel.h
new file mode 100644
index 0000000..dd2e44f
--- /dev/null
+++ b/include/linux/ptp_clock_kernel.h
@@ -0,0 +1,139 @@
+/*
+ * PTP 1588 clock support
+ *
+ * Copyright (C) 2010 OMICRON electronics GmbH
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#ifndef _PTP_CLOCK_KERNEL_H_
+#define _PTP_CLOCK_KERNEL_H_
+
+#include <linux/ptp_clock.h>
+
+
+struct ptp_clock_request {
+ enum {
+ PTP_CLK_REQ_EXTTS,
+ PTP_CLK_REQ_PEROUT,
+ PTP_CLK_REQ_PPS,
+ } type;
+ union {
+ struct ptp_extts_request extts;
+ struct ptp_perout_request perout;
+ };
+};
+
+/**
+ * struct ptp_clock_info - decribes a PTP hardware clock
+ *
+ * @owner: The clock driver should set to THIS_MODULE.
+ * @name: A short name to identify the clock.
+ * @max_adj: The maximum possible frequency adjustment, in parts per billon.
+ * @n_alarm: The number of programmable alarms.
+ * @n_ext_ts: The number of external time stamp channels.
+ * @n_per_out: The number of programmable periodic signals.
+ * @pps: Indicates whether the clock supports a PPS callback.
+ *
+ * clock operations
+ *
+ * @adjfreq: Adjusts the frequency of the hardware clock.
+ * parameter delta: Desired period change in parts per billion.
+ *
+ * @adjtime: Shifts the time of the hardware clock.
+ * parameter delta: Desired change in nanoseconds.
+ *
+ * @gettime: Reads the current time from the hardware clock.
+ * parameter ts: Holds the result.
+ *
+ * @settime: Set the current time on the hardware clock.
+ * parameter ts: Time value to set.
+ *
+ * @enable: Request driver to enable or disable an ancillary feature.
+ * parameter request: Desired resource to enable or disable.
+ * parameter on: Caller passes one to enable or zero to disable.
+ *
+ * Drivers should embed their ptp_clock_info within a private
+ * structure, obtaining a reference to it using container_of().
+ *
+ * The callbacks must all return zero on success, non-zero otherwise.
+ */
+
+struct ptp_clock_info {
+ struct module *owner;
+ char name[16];
+ s32 max_adj;
+ int n_alarm;
+ int n_ext_ts;
+ int n_per_out;
+ int pps;
+ int (*adjfreq)(struct ptp_clock_info *ptp, s32 delta);
+ int (*adjtime)(struct ptp_clock_info *ptp, s64 delta);
+ int (*gettime)(struct ptp_clock_info *ptp, struct timespec *ts);
+ int (*settime)(struct ptp_clock_info *ptp, const struct timespec *ts);
+ int (*enable)(struct ptp_clock_info *ptp,
+ struct ptp_clock_request *request, int on);
+};
+
+struct ptp_clock;
+
+/**
+ * ptp_clock_register() - register a PTP hardware clock driver
+ *
+ * @info: Structure describing the new clock.
+ */
+
+extern struct ptp_clock *ptp_clock_register(struct ptp_clock_info *info);
+
+/**
+ * ptp_clock_unregister() - unregister a PTP hardware clock driver
+ *
+ * @ptp: The clock to remove from service.
+ */
+
+extern int ptp_clock_unregister(struct ptp_clock *ptp);
+
+
+enum ptp_clock_events {
+ PTP_CLOCK_ALARM,
+ PTP_CLOCK_EXTTS,
+ PTP_CLOCK_PPS,
+};
+
+/**
+ * struct ptp_clock_event - decribes a PTP hardware clock event
+ *
+ * @type: One of the ptp_clock_events enumeration values.
+ * @index: Identifies the source of the event.
+ * @timestamp: When the event occured.
+ */
+
+struct ptp_clock_event {
+ int type;
+ int index;
+ u64 timestamp;
+};
+
+/**
+ * ptp_clock_event() - notify the PTP layer about an event
+ *
+ * @ptp: The clock obtained from ptp_clock_register().
+ * @event: Message structure describing the event.
+ */
+
+extern void ptp_clock_event(struct ptp_clock *ptp,
+ struct ptp_clock_event *event);
+
+#endif
--
1.7.0.4
^ permalink raw reply related
* [PATCH V13 2/4] ptp: Added a clock that uses the eTSEC found on the MPC85xx.
From: Richard Cochran @ 2011-03-27 6:38 UTC (permalink / raw)
To: linux-kernel
Cc: Thomas Gleixner, Rodolfo Giometti, Arnd Bergmann, Peter Zijlstra,
linux-api, devicetree-discuss, Russell King, Paul Mackerras,
John Stultz, linux-arm-kernel, netdev, Mike Frysinger,
Christoph Lameter, linuxppc-dev, David Miller, Alan Cox,
Krzysztof Halasa
In-Reply-To: <cover.1301206090.git.richard.cochran@omicron.at>
The eTSEC includes a PTP clock with quite a few features. This patch adds
support for the basic clock adjustment functions, plus two external time
stamps, one alarm, and the PPS callback.
Signed-off-by: Richard Cochran <richard.cochran@omicron.at>
---
.../devicetree/bindings/net/fsl-tsec-phy.txt | 54 ++
arch/powerpc/boot/dts/mpc8313erdb.dts | 13 +
arch/powerpc/boot/dts/mpc8572ds.dts | 13 +
arch/powerpc/boot/dts/p2020ds.dts | 13 +
arch/powerpc/boot/dts/p2020rdb.dts | 13 +
drivers/net/Makefile | 1 +
drivers/net/gianfar_ptp.c | 588 ++++++++++++++++++++
drivers/ptp/Kconfig | 13 +
8 files changed, 708 insertions(+), 0 deletions(-)
create mode 100644 drivers/net/gianfar_ptp.c
diff --git a/Documentation/devicetree/bindings/net/fsl-tsec-phy.txt b/Documentation/devicetree/bindings/net/fsl-tsec-phy.txt
index edb7ae1..2c6be03 100644
--- a/Documentation/devicetree/bindings/net/fsl-tsec-phy.txt
+++ b/Documentation/devicetree/bindings/net/fsl-tsec-phy.txt
@@ -74,3 +74,57 @@ Example:
interrupt-parent = <&mpic>;
phy-handle = <&phy0>
};
+
+* Gianfar PTP clock nodes
+
+General Properties:
+
+ - compatible Should be "fsl,etsec-ptp"
+ - reg Offset and length of the register set for the device
+ - interrupts There should be at least two interrupts. Some devices
+ have as many as four PTP related interrupts.
+
+Clock Properties:
+
+ - fsl,tclk-period Timer reference clock period in nanoseconds.
+ - fsl,tmr-prsc Prescaler, divides the output clock.
+ - fsl,tmr-add Frequency compensation value.
+ - fsl,tmr-fiper1 Fixed interval period pulse generator.
+ - fsl,tmr-fiper2 Fixed interval period pulse generator.
+ - fsl,max-adj Maximum frequency adjustment in parts per billion.
+
+ These properties set the operational parameters for the PTP
+ clock. You must choose these carefully for the clock to work right.
+ Here is how to figure good values:
+
+ TimerOsc = system clock MHz
+ tclk_period = desired clock period nanoseconds
+ NominalFreq = 1000 / tclk_period MHz
+ FreqDivRatio = TimerOsc / NominalFreq (must be greater that 1.0)
+ tmr_add = ceil(2^32 / FreqDivRatio)
+ OutputClock = NominalFreq / tmr_prsc MHz
+ PulseWidth = 1 / OutputClock microseconds
+ FiperFreq1 = desired frequency in Hz
+ FiperDiv1 = 1000000 * OutputClock / FiperFreq1
+ tmr_fiper1 = tmr_prsc * tclk_period * FiperDiv1 - tclk_period
+ max_adj = 1000000000 * (FreqDivRatio - 1.0) - 1
+
+ The calculation for tmr_fiper2 is the same as for tmr_fiper1. The
+ driver expects that tmr_fiper1 will be correctly set to produce a 1
+ Pulse Per Second (PPS) signal, since this will be offered to the PPS
+ subsystem to synchronize the Linux clock.
+
+Example:
+
+ ptp_clock@24E00 {
+ compatible = "fsl,etsec-ptp";
+ reg = <0x24E00 0xB0>;
+ interrupts = <12 0x8 13 0x8>;
+ interrupt-parent = < &ipic >;
+ fsl,tclk-period = <10>;
+ fsl,tmr-prsc = <100>;
+ fsl,tmr-add = <0x999999A4>;
+ fsl,tmr-fiper1 = <0x3B9AC9F6>;
+ fsl,tmr-fiper2 = <0x00018696>;
+ fsl,max-adj = <659999998>;
+ };
diff --git a/arch/powerpc/boot/dts/mpc8313erdb.dts b/arch/powerpc/boot/dts/mpc8313erdb.dts
index 183f2aa..502e17c 100644
--- a/arch/powerpc/boot/dts/mpc8313erdb.dts
+++ b/arch/powerpc/boot/dts/mpc8313erdb.dts
@@ -208,6 +208,19 @@
sleep = <&pmc 0x00300000>;
};
+ ptp_clock@24E00 {
+ compatible = "fsl,etsec-ptp";
+ reg = <0x24E00 0xB0>;
+ interrupts = <12 0x8 13 0x8>;
+ interrupt-parent = < &ipic >;
+ fsl,tclk-period = <10>;
+ fsl,tmr-prsc = <100>;
+ fsl,tmr-add = <0x999999A4>;
+ fsl,tmr-fiper1 = <0x3B9AC9F6>;
+ fsl,tmr-fiper2 = <0x00018696>;
+ fsl,max-adj = <659999998>;
+ };
+
enet0: ethernet@24000 {
#address-cells = <1>;
#size-cells = <1>;
diff --git a/arch/powerpc/boot/dts/mpc8572ds.dts b/arch/powerpc/boot/dts/mpc8572ds.dts
index cafc128..f6c04d2 100644
--- a/arch/powerpc/boot/dts/mpc8572ds.dts
+++ b/arch/powerpc/boot/dts/mpc8572ds.dts
@@ -324,6 +324,19 @@
};
};
+ ptp_clock@24E00 {
+ compatible = "fsl,etsec-ptp";
+ reg = <0x24E00 0xB0>;
+ interrupts = <68 2 69 2 70 2 71 2>;
+ interrupt-parent = < &mpic >;
+ fsl,tclk-period = <5>;
+ fsl,tmr-prsc = <200>;
+ fsl,tmr-add = <0xAAAAAAAB>;
+ fsl,tmr-fiper1 = <0x3B9AC9FB>;
+ fsl,tmr-fiper2 = <0x3B9AC9FB>;
+ fsl,max-adj = <499999999>;
+ };
+
enet0: ethernet@24000 {
#address-cells = <1>;
#size-cells = <1>;
diff --git a/arch/powerpc/boot/dts/p2020ds.dts b/arch/powerpc/boot/dts/p2020ds.dts
index 1101914..3956daf 100644
--- a/arch/powerpc/boot/dts/p2020ds.dts
+++ b/arch/powerpc/boot/dts/p2020ds.dts
@@ -336,6 +336,19 @@
phy_type = "ulpi";
};
+ ptp_clock@24E00 {
+ compatible = "fsl,etsec-ptp";
+ reg = <0x24E00 0xB0>;
+ interrupts = <68 2 69 2 70 2>;
+ interrupt-parent = < &mpic >;
+ fsl,tclk-period = <5>;
+ fsl,tmr-prsc = <200>;
+ fsl,tmr-add = <0xCCCCCCCD>;
+ fsl,tmr-fiper1 = <0x3B9AC9FB>;
+ fsl,tmr-fiper2 = <0x0001869B>;
+ fsl,max-adj = <249999999>;
+ };
+
enet0: ethernet@24000 {
#address-cells = <1>;
#size-cells = <1>;
diff --git a/arch/powerpc/boot/dts/p2020rdb.dts b/arch/powerpc/boot/dts/p2020rdb.dts
index da4cb0d..a6229cb 100644
--- a/arch/powerpc/boot/dts/p2020rdb.dts
+++ b/arch/powerpc/boot/dts/p2020rdb.dts
@@ -396,6 +396,19 @@
phy_type = "ulpi";
};
+ ptp_clock@24E00 {
+ compatible = "fsl,etsec-ptp";
+ reg = <0x24E00 0xB0>;
+ interrupts = <68 2 69 2 70 2>;
+ interrupt-parent = < &mpic >;
+ fsl,tclk-period = <5>;
+ fsl,tmr-prsc = <200>;
+ fsl,tmr-add = <0xCCCCCCCD>;
+ fsl,tmr-fiper1 = <0x3B9AC9FB>;
+ fsl,tmr-fiper2 = <0x0001869B>;
+ fsl,max-adj = <249999999>;
+ };
+
enet0: ethernet@24000 {
#address-cells = <1>;
#size-cells = <1>;
diff --git a/drivers/net/Makefile b/drivers/net/Makefile
index 01b604a..97a0cef 100644
--- a/drivers/net/Makefile
+++ b/drivers/net/Makefile
@@ -31,6 +31,7 @@ obj-$(CONFIG_ATL2) += atlx/
obj-$(CONFIG_ATL1E) += atl1e/
obj-$(CONFIG_ATL1C) += atl1c/
obj-$(CONFIG_GIANFAR) += gianfar_driver.o
+obj-$(CONFIG_PTP_1588_CLOCK_GIANFAR) += gianfar_ptp.o
obj-$(CONFIG_TEHUTI) += tehuti.o
obj-$(CONFIG_ENIC) += enic/
obj-$(CONFIG_JME) += jme.o
diff --git a/drivers/net/gianfar_ptp.c b/drivers/net/gianfar_ptp.c
new file mode 100644
index 0000000..d8e1753
--- /dev/null
+++ b/drivers/net/gianfar_ptp.c
@@ -0,0 +1,588 @@
+/*
+ * PTP 1588 clock using the eTSEC
+ *
+ * Copyright (C) 2010 OMICRON electronics GmbH
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+#include <linux/device.h>
+#include <linux/hrtimer.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_platform.h>
+#include <linux/timex.h>
+#include <linux/io.h>
+
+#include <linux/ptp_clock_kernel.h>
+
+#include "gianfar.h"
+
+/*
+ * gianfar ptp registers
+ * Generated by regen.tcl on Thu May 13 01:38:57 PM CEST 2010
+ */
+struct gianfar_ptp_registers {
+ u32 tmr_ctrl; /* Timer control register */
+ u32 tmr_tevent; /* Timestamp event register */
+ u32 tmr_temask; /* Timer event mask register */
+ u32 tmr_pevent; /* Timestamp event register */
+ u32 tmr_pemask; /* Timer event mask register */
+ u32 tmr_stat; /* Timestamp status register */
+ u32 tmr_cnt_h; /* Timer counter high register */
+ u32 tmr_cnt_l; /* Timer counter low register */
+ u32 tmr_add; /* Timer drift compensation addend register */
+ u32 tmr_acc; /* Timer accumulator register */
+ u32 tmr_prsc; /* Timer prescale */
+ u8 res1[4];
+ u32 tmroff_h; /* Timer offset high */
+ u32 tmroff_l; /* Timer offset low */
+ u8 res2[8];
+ u32 tmr_alarm1_h; /* Timer alarm 1 high register */
+ u32 tmr_alarm1_l; /* Timer alarm 1 high register */
+ u32 tmr_alarm2_h; /* Timer alarm 2 high register */
+ u32 tmr_alarm2_l; /* Timer alarm 2 high register */
+ u8 res3[48];
+ u32 tmr_fiper1; /* Timer fixed period interval */
+ u32 tmr_fiper2; /* Timer fixed period interval */
+ u32 tmr_fiper3; /* Timer fixed period interval */
+ u8 res4[20];
+ u32 tmr_etts1_h; /* Timestamp of general purpose external trigger */
+ u32 tmr_etts1_l; /* Timestamp of general purpose external trigger */
+ u32 tmr_etts2_h; /* Timestamp of general purpose external trigger */
+ u32 tmr_etts2_l; /* Timestamp of general purpose external trigger */
+};
+
+/* Bit definitions for the TMR_CTRL register */
+#define ALM1P (1<<31) /* Alarm1 output polarity */
+#define ALM2P (1<<30) /* Alarm2 output polarity */
+#define FS (1<<28) /* FIPER start indication */
+#define PP1L (1<<27) /* Fiper1 pulse loopback mode enabled. */
+#define PP2L (1<<26) /* Fiper2 pulse loopback mode enabled. */
+#define TCLK_PERIOD_SHIFT (16) /* 1588 timer reference clock period. */
+#define TCLK_PERIOD_MASK (0x3ff)
+#define RTPE (1<<15) /* Record Tx Timestamp to PAL Enable. */
+#define FRD (1<<14) /* FIPER Realignment Disable */
+#define ESFDP (1<<11) /* External Tx/Rx SFD Polarity. */
+#define ESFDE (1<<10) /* External Tx/Rx SFD Enable. */
+#define ETEP2 (1<<9) /* External trigger 2 edge polarity */
+#define ETEP1 (1<<8) /* External trigger 1 edge polarity */
+#define COPH (1<<7) /* Generated clock output phase. */
+#define CIPH (1<<6) /* External oscillator input clock phase */
+#define TMSR (1<<5) /* Timer soft reset. */
+#define BYP (1<<3) /* Bypass drift compensated clock */
+#define TE (1<<2) /* 1588 timer enable. */
+#define CKSEL_SHIFT (0) /* 1588 Timer reference clock source */
+#define CKSEL_MASK (0x3)
+
+/* Bit definitions for the TMR_TEVENT register */
+#define ETS2 (1<<25) /* External trigger 2 timestamp sampled */
+#define ETS1 (1<<24) /* External trigger 1 timestamp sampled */
+#define ALM2 (1<<17) /* Current time = alarm time register 2 */
+#define ALM1 (1<<16) /* Current time = alarm time register 1 */
+#define PP1 (1<<7) /* periodic pulse generated on FIPER1 */
+#define PP2 (1<<6) /* periodic pulse generated on FIPER2 */
+#define PP3 (1<<5) /* periodic pulse generated on FIPER3 */
+
+/* Bit definitions for the TMR_TEMASK register */
+#define ETS2EN (1<<25) /* External trigger 2 timestamp enable */
+#define ETS1EN (1<<24) /* External trigger 1 timestamp enable */
+#define ALM2EN (1<<17) /* Timer ALM2 event enable */
+#define ALM1EN (1<<16) /* Timer ALM1 event enable */
+#define PP1EN (1<<7) /* Periodic pulse event 1 enable */
+#define PP2EN (1<<6) /* Periodic pulse event 2 enable */
+
+/* Bit definitions for the TMR_PEVENT register */
+#define TXP2 (1<<9) /* PTP transmitted timestamp im TXTS2 */
+#define TXP1 (1<<8) /* PTP transmitted timestamp in TXTS1 */
+#define RXP (1<<0) /* PTP frame has been received */
+
+/* Bit definitions for the TMR_PEMASK register */
+#define TXP2EN (1<<9) /* Transmit PTP packet event 2 enable */
+#define TXP1EN (1<<8) /* Transmit PTP packet event 1 enable */
+#define RXPEN (1<<0) /* Receive PTP packet event enable */
+
+/* Bit definitions for the TMR_STAT register */
+#define STAT_VEC_SHIFT (0) /* Timer general purpose status vector */
+#define STAT_VEC_MASK (0x3f)
+
+/* Bit definitions for the TMR_PRSC register */
+#define PRSC_OCK_SHIFT (0) /* Output clock division/prescale factor. */
+#define PRSC_OCK_MASK (0xffff)
+
+
+#define DRIVER "gianfar_ptp"
+#define DEFAULT_CKSEL 1
+#define N_ALARM 1 /* first alarm is used internally to reset fipers */
+#define N_EXT_TS 2
+#define REG_SIZE sizeof(struct gianfar_ptp_registers)
+
+struct etsects {
+ struct gianfar_ptp_registers *regs;
+ spinlock_t lock; /* protects regs */
+ struct ptp_clock *clock;
+ struct ptp_clock_info caps;
+ struct resource *rsrc;
+ int irq;
+ u64 alarm_interval; /* for periodic alarm */
+ u64 alarm_value;
+ u32 tclk_period; /* nanoseconds */
+ u32 tmr_prsc;
+ u32 tmr_add;
+ u32 cksel;
+ u32 tmr_fiper1;
+ u32 tmr_fiper2;
+};
+
+/*
+ * Register access functions
+ */
+
+/* Caller must hold etsects->lock. */
+static u64 tmr_cnt_read(struct etsects *etsects)
+{
+ u64 ns;
+ u32 lo, hi;
+
+ lo = gfar_read(&etsects->regs->tmr_cnt_l);
+ hi = gfar_read(&etsects->regs->tmr_cnt_h);
+ ns = ((u64) hi) << 32;
+ ns |= lo;
+ return ns;
+}
+
+/* Caller must hold etsects->lock. */
+static void tmr_cnt_write(struct etsects *etsects, u64 ns)
+{
+ u32 hi = ns >> 32;
+ u32 lo = ns & 0xffffffff;
+
+ gfar_write(&etsects->regs->tmr_cnt_l, lo);
+ gfar_write(&etsects->regs->tmr_cnt_h, hi);
+}
+
+/* Caller must hold etsects->lock. */
+static void set_alarm(struct etsects *etsects)
+{
+ u64 ns;
+ u32 lo, hi;
+
+ ns = tmr_cnt_read(etsects) + 1500000000ULL;
+ ns = div_u64(ns, 1000000000UL) * 1000000000ULL;
+ ns -= etsects->tclk_period;
+ hi = ns >> 32;
+ lo = ns & 0xffffffff;
+ gfar_write(&etsects->regs->tmr_alarm1_l, lo);
+ gfar_write(&etsects->regs->tmr_alarm1_h, hi);
+}
+
+/* Caller must hold etsects->lock. */
+static void set_fipers(struct etsects *etsects)
+{
+ u32 tmr_ctrl = gfar_read(&etsects->regs->tmr_ctrl);
+
+ gfar_write(&etsects->regs->tmr_ctrl, tmr_ctrl & (~TE));
+ gfar_write(&etsects->regs->tmr_prsc, etsects->tmr_prsc);
+ gfar_write(&etsects->regs->tmr_fiper1, etsects->tmr_fiper1);
+ gfar_write(&etsects->regs->tmr_fiper2, etsects->tmr_fiper2);
+ set_alarm(etsects);
+ gfar_write(&etsects->regs->tmr_ctrl, tmr_ctrl|TE);
+}
+
+/*
+ * Interrupt service routine
+ */
+
+static irqreturn_t isr(int irq, void *priv)
+{
+ struct etsects *etsects = priv;
+ struct ptp_clock_event event;
+ u64 ns;
+ u32 ack = 0, lo, hi, mask, val;
+
+ val = gfar_read(&etsects->regs->tmr_tevent);
+
+ if (val & ETS1) {
+ ack |= ETS1;
+ hi = gfar_read(&etsects->regs->tmr_etts1_h);
+ lo = gfar_read(&etsects->regs->tmr_etts1_l);
+ event.type = PTP_CLOCK_EXTTS;
+ event.index = 0;
+ event.timestamp = ((u64) hi) << 32;
+ event.timestamp |= lo;
+ ptp_clock_event(etsects->clock, &event);
+ }
+
+ if (val & ETS2) {
+ ack |= ETS2;
+ hi = gfar_read(&etsects->regs->tmr_etts2_h);
+ lo = gfar_read(&etsects->regs->tmr_etts2_l);
+ event.type = PTP_CLOCK_EXTTS;
+ event.index = 1;
+ event.timestamp = ((u64) hi) << 32;
+ event.timestamp |= lo;
+ ptp_clock_event(etsects->clock, &event);
+ }
+
+ if (val & ALM2) {
+ ack |= ALM2;
+ if (etsects->alarm_value) {
+ event.type = PTP_CLOCK_ALARM;
+ event.index = 0;
+ event.timestamp = etsects->alarm_value;
+ ptp_clock_event(etsects->clock, &event);
+ }
+ if (etsects->alarm_interval) {
+ ns = etsects->alarm_value + etsects->alarm_interval;
+ hi = ns >> 32;
+ lo = ns & 0xffffffff;
+ spin_lock(&etsects->lock);
+ gfar_write(&etsects->regs->tmr_alarm2_l, lo);
+ gfar_write(&etsects->regs->tmr_alarm2_h, hi);
+ spin_unlock(&etsects->lock);
+ etsects->alarm_value = ns;
+ } else {
+ gfar_write(&etsects->regs->tmr_tevent, ALM2);
+ spin_lock(&etsects->lock);
+ mask = gfar_read(&etsects->regs->tmr_temask);
+ mask &= ~ALM2EN;
+ gfar_write(&etsects->regs->tmr_temask, mask);
+ spin_unlock(&etsects->lock);
+ etsects->alarm_value = 0;
+ etsects->alarm_interval = 0;
+ }
+ }
+
+ if (val & PP1) {
+ ack |= PP1;
+ event.type = PTP_CLOCK_PPS;
+ ptp_clock_event(etsects->clock, &event);
+ }
+
+ if (ack) {
+ gfar_write(&etsects->regs->tmr_tevent, ack);
+ return IRQ_HANDLED;
+ } else
+ return IRQ_NONE;
+}
+
+/*
+ * PTP clock operations
+ */
+
+static int ptp_gianfar_adjfreq(struct ptp_clock_info *ptp, s32 ppb)
+{
+ u64 adj;
+ u32 diff, tmr_add;
+ int neg_adj = 0;
+ struct etsects *etsects = container_of(ptp, struct etsects, caps);
+
+ if (ppb < 0) {
+ neg_adj = 1;
+ ppb = -ppb;
+ }
+ tmr_add = etsects->tmr_add;
+ adj = tmr_add;
+ adj *= ppb;
+ diff = div_u64(adj, 1000000000ULL);
+
+ tmr_add = neg_adj ? tmr_add - diff : tmr_add + diff;
+
+ gfar_write(&etsects->regs->tmr_add, tmr_add);
+
+ return 0;
+}
+
+static int ptp_gianfar_adjtime(struct ptp_clock_info *ptp, s64 delta)
+{
+ s64 now;
+ unsigned long flags;
+ struct etsects *etsects = container_of(ptp, struct etsects, caps);
+
+ spin_lock_irqsave(&etsects->lock, flags);
+
+ now = tmr_cnt_read(etsects);
+ now += delta;
+ tmr_cnt_write(etsects, now);
+
+ spin_unlock_irqrestore(&etsects->lock, flags);
+
+ set_fipers(etsects);
+
+ return 0;
+}
+
+static int ptp_gianfar_gettime(struct ptp_clock_info *ptp, struct timespec *ts)
+{
+ u64 ns;
+ u32 remainder;
+ unsigned long flags;
+ struct etsects *etsects = container_of(ptp, struct etsects, caps);
+
+ spin_lock_irqsave(&etsects->lock, flags);
+
+ ns = tmr_cnt_read(etsects);
+
+ spin_unlock_irqrestore(&etsects->lock, flags);
+
+ ts->tv_sec = div_u64_rem(ns, 1000000000, &remainder);
+ ts->tv_nsec = remainder;
+ return 0;
+}
+
+static int ptp_gianfar_settime(struct ptp_clock_info *ptp,
+ const struct timespec *ts)
+{
+ u64 ns;
+ unsigned long flags;
+ struct etsects *etsects = container_of(ptp, struct etsects, caps);
+
+ ns = ts->tv_sec * 1000000000ULL;
+ ns += ts->tv_nsec;
+
+ spin_lock_irqsave(&etsects->lock, flags);
+
+ tmr_cnt_write(etsects, ns);
+ set_fipers(etsects);
+
+ spin_unlock_irqrestore(&etsects->lock, flags);
+
+ return 0;
+}
+
+static int ptp_gianfar_enable(struct ptp_clock_info *ptp,
+ struct ptp_clock_request *rq, int on)
+{
+ struct etsects *etsects = container_of(ptp, struct etsects, caps);
+ unsigned long flags;
+ u32 bit, mask;
+
+ switch (rq->type) {
+ case PTP_CLK_REQ_EXTTS:
+ switch (rq->extts.index) {
+ case 0:
+ bit = ETS1EN;
+ break;
+ case 1:
+ bit = ETS2EN;
+ break;
+ default:
+ return -EINVAL;
+ }
+ spin_lock_irqsave(&etsects->lock, flags);
+ mask = gfar_read(&etsects->regs->tmr_temask);
+ if (on)
+ mask |= bit;
+ else
+ mask &= ~bit;
+ gfar_write(&etsects->regs->tmr_temask, mask);
+ spin_unlock_irqrestore(&etsects->lock, flags);
+ return 0;
+
+ case PTP_CLK_REQ_PPS:
+ spin_lock_irqsave(&etsects->lock, flags);
+ mask = gfar_read(&etsects->regs->tmr_temask);
+ if (on)
+ mask |= PP1EN;
+ else
+ mask &= ~PP1EN;
+ gfar_write(&etsects->regs->tmr_temask, mask);
+ spin_unlock_irqrestore(&etsects->lock, flags);
+ return 0;
+
+ default:
+ break;
+ }
+
+ return -EOPNOTSUPP;
+}
+
+static struct ptp_clock_info ptp_gianfar_caps = {
+ .owner = THIS_MODULE,
+ .name = "gianfar clock",
+ .max_adj = 512000,
+ .n_alarm = N_ALARM,
+ .n_ext_ts = N_EXT_TS,
+ .n_per_out = 0,
+ .pps = 1,
+ .adjfreq = ptp_gianfar_adjfreq,
+ .adjtime = ptp_gianfar_adjtime,
+ .gettime = ptp_gianfar_gettime,
+ .settime = ptp_gianfar_settime,
+ .enable = ptp_gianfar_enable,
+};
+
+/* OF device tree */
+
+static int get_of_u32(struct device_node *node, char *str, u32 *val)
+{
+ int plen;
+ const u32 *prop = of_get_property(node, str, &plen);
+
+ if (!prop || plen != sizeof(*prop))
+ return -1;
+ *val = *prop;
+ return 0;
+}
+
+static int gianfar_ptp_probe(struct platform_device *dev)
+{
+ struct device_node *node = dev->dev.of_node;
+ struct etsects *etsects;
+ struct timespec now;
+ int err = -ENOMEM;
+ u32 tmr_ctrl;
+ unsigned long flags;
+
+ etsects = kzalloc(sizeof(*etsects), GFP_KERNEL);
+ if (!etsects)
+ goto no_memory;
+
+ err = -ENODEV;
+
+ etsects->caps = ptp_gianfar_caps;
+ etsects->cksel = DEFAULT_CKSEL;
+
+ if (get_of_u32(node, "fsl,tclk-period", &etsects->tclk_period) ||
+ get_of_u32(node, "fsl,tmr-prsc", &etsects->tmr_prsc) ||
+ get_of_u32(node, "fsl,tmr-add", &etsects->tmr_add) ||
+ get_of_u32(node, "fsl,tmr-fiper1", &etsects->tmr_fiper1) ||
+ get_of_u32(node, "fsl,tmr-fiper2", &etsects->tmr_fiper2) ||
+ get_of_u32(node, "fsl,max-adj", &etsects->caps.max_adj)) {
+ pr_err("device tree node missing required elements\n");
+ goto no_node;
+ }
+
+ etsects->irq = platform_get_irq(dev, 0);
+
+ if (etsects->irq == NO_IRQ) {
+ pr_err("irq not in device tree\n");
+ goto no_node;
+ }
+ if (request_irq(etsects->irq, isr, 0, DRIVER, etsects)) {
+ pr_err("request_irq failed\n");
+ goto no_node;
+ }
+
+ etsects->rsrc = platform_get_resource(dev, IORESOURCE_MEM, 0);
+ if (!etsects->rsrc) {
+ pr_err("no resource\n");
+ goto no_resource;
+ }
+ if (request_resource(&ioport_resource, etsects->rsrc)) {
+ pr_err("resource busy\n");
+ goto no_resource;
+ }
+
+ spin_lock_init(&etsects->lock);
+
+ etsects->regs = ioremap(etsects->rsrc->start,
+ 1 + etsects->rsrc->end - etsects->rsrc->start);
+ if (!etsects->regs) {
+ pr_err("ioremap ptp registers failed\n");
+ goto no_ioremap;
+ }
+ getnstimeofday(&now);
+ ptp_gianfar_settime(&etsects->caps, &now);
+
+ tmr_ctrl =
+ (etsects->tclk_period & TCLK_PERIOD_MASK) << TCLK_PERIOD_SHIFT |
+ (etsects->cksel & CKSEL_MASK) << CKSEL_SHIFT;
+
+ spin_lock_irqsave(&etsects->lock, flags);
+
+ gfar_write(&etsects->regs->tmr_ctrl, tmr_ctrl);
+ gfar_write(&etsects->regs->tmr_add, etsects->tmr_add);
+ gfar_write(&etsects->regs->tmr_prsc, etsects->tmr_prsc);
+ gfar_write(&etsects->regs->tmr_fiper1, etsects->tmr_fiper1);
+ gfar_write(&etsects->regs->tmr_fiper2, etsects->tmr_fiper2);
+ set_alarm(etsects);
+ gfar_write(&etsects->regs->tmr_ctrl, tmr_ctrl|FS|RTPE|TE);
+
+ spin_unlock_irqrestore(&etsects->lock, flags);
+
+ etsects->clock = ptp_clock_register(&etsects->caps);
+ if (IS_ERR(etsects->clock)) {
+ err = PTR_ERR(etsects->clock);
+ goto no_clock;
+ }
+
+ dev_set_drvdata(&dev->dev, etsects);
+
+ return 0;
+
+no_clock:
+no_ioremap:
+ release_resource(etsects->rsrc);
+no_resource:
+ free_irq(etsects->irq, etsects);
+no_node:
+ kfree(etsects);
+no_memory:
+ return err;
+}
+
+static int gianfar_ptp_remove(struct platform_device *dev)
+{
+ struct etsects *etsects = dev_get_drvdata(&dev->dev);
+
+ gfar_write(&etsects->regs->tmr_temask, 0);
+ gfar_write(&etsects->regs->tmr_ctrl, 0);
+
+ ptp_clock_unregister(etsects->clock);
+ iounmap(etsects->regs);
+ release_resource(etsects->rsrc);
+ free_irq(etsects->irq, etsects);
+ kfree(etsects);
+
+ return 0;
+}
+
+static struct of_device_id match_table[] = {
+ { .compatible = "fsl,etsec-ptp" },
+ {},
+};
+
+static struct platform_driver gianfar_ptp_driver = {
+ .driver = {
+ .name = "gianfar_ptp",
+ .of_match_table = match_table,
+ .owner = THIS_MODULE,
+ },
+ .probe = gianfar_ptp_probe,
+ .remove = gianfar_ptp_remove,
+};
+
+/* module operations */
+
+static int __init ptp_gianfar_init(void)
+{
+ return platform_driver_register(&gianfar_ptp_driver);
+}
+
+module_init(ptp_gianfar_init);
+
+static void __exit ptp_gianfar_exit(void)
+{
+ platform_driver_unregister(&gianfar_ptp_driver);
+}
+
+module_exit(ptp_gianfar_exit);
+
+MODULE_AUTHOR("Richard Cochran <richard.cochran@omicron.at>");
+MODULE_DESCRIPTION("PTP clock using the eTSEC");
+MODULE_LICENSE("GPL");
diff --git a/drivers/ptp/Kconfig b/drivers/ptp/Kconfig
index 70d4bb1..12eb844 100644
--- a/drivers/ptp/Kconfig
+++ b/drivers/ptp/Kconfig
@@ -27,4 +27,17 @@ config PTP_1588_CLOCK
To compile this driver as a module, choose M here: the module
will be called ptp.
+config PTP_1588_CLOCK_GIANFAR
+ tristate "Freescale eTSEC as PTP clock"
+ depends on PTP_1588_CLOCK
+ depends on GIANFAR
+ help
+ This driver adds support for using the eTSEC as a PTP
+ clock. This clock is only useful if your PTP programs are
+ getting hardware time stamps on the PTP Ethernet packets
+ using the SO_TIMESTAMPING API.
+
+ To compile this driver as a module, choose M here: the module
+ will be called gianfar_ptp.
+
endmenu
--
1.7.0.4
^ permalink raw reply related
* [PATCH V13 3/4] ptp: Added a clock driver for the IXP46x.
From: Richard Cochran @ 2011-03-27 6:39 UTC (permalink / raw)
To: linux-kernel
Cc: Thomas Gleixner, Rodolfo Giometti, Arnd Bergmann, Peter Zijlstra,
linux-api, devicetree-discuss, Russell King, Paul Mackerras,
John Stultz, linux-arm-kernel, netdev, Mike Frysinger,
Christoph Lameter, linuxppc-dev, David Miller, Alan Cox,
Krzysztof Halasa
In-Reply-To: <cover.1301206090.git.richard.cochran@omicron.at>
This patch adds a driver for the hardware time stamping unit found on the
IXP465. The basic clock operations and an external trigger are implemented.
Signed-off-by: Richard Cochran <richard.cochran@omicron.at>
Acked-by: John Stultz <johnstul@us.ibm.com>
---
arch/arm/mach-ixp4xx/include/mach/ixp46x_ts.h | 78 ++++++
drivers/net/arm/ixp4xx_eth.c | 192 ++++++++++++++-
drivers/ptp/Kconfig | 13 +
drivers/ptp/Makefile | 1 +
drivers/ptp/ptp_ixp46x.c | 332 +++++++++++++++++++++++++
5 files changed, 613 insertions(+), 3 deletions(-)
create mode 100644 arch/arm/mach-ixp4xx/include/mach/ixp46x_ts.h
create mode 100644 drivers/ptp/ptp_ixp46x.c
diff --git a/arch/arm/mach-ixp4xx/include/mach/ixp46x_ts.h b/arch/arm/mach-ixp4xx/include/mach/ixp46x_ts.h
new file mode 100644
index 0000000..292d55e
--- /dev/null
+++ b/arch/arm/mach-ixp4xx/include/mach/ixp46x_ts.h
@@ -0,0 +1,78 @@
+/*
+ * PTP 1588 clock using the IXP46X
+ *
+ * Copyright (C) 2010 OMICRON electronics GmbH
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#ifndef _IXP46X_TS_H_
+#define _IXP46X_TS_H_
+
+#define DEFAULT_ADDEND 0xF0000029
+#define TICKS_NS_SHIFT 4
+
+struct ixp46x_channel_ctl {
+ u32 ch_control; /* 0x40 Time Synchronization Channel Control */
+ u32 ch_event; /* 0x44 Time Synchronization Channel Event */
+ u32 tx_snap_lo; /* 0x48 Transmit Snapshot Low Register */
+ u32 tx_snap_hi; /* 0x4C Transmit Snapshot High Register */
+ u32 rx_snap_lo; /* 0x50 Receive Snapshot Low Register */
+ u32 rx_snap_hi; /* 0x54 Receive Snapshot High Register */
+ u32 src_uuid_lo; /* 0x58 Source UUID0 Low Register */
+ u32 src_uuid_hi; /* 0x5C Sequence Identifier/Source UUID0 High */
+};
+
+struct ixp46x_ts_regs {
+ u32 control; /* 0x00 Time Sync Control Register */
+ u32 event; /* 0x04 Time Sync Event Register */
+ u32 addend; /* 0x08 Time Sync Addend Register */
+ u32 accum; /* 0x0C Time Sync Accumulator Register */
+ u32 test; /* 0x10 Time Sync Test Register */
+ u32 unused; /* 0x14 */
+ u32 rsystime_lo; /* 0x18 RawSystemTime_Low Register */
+ u32 rsystime_hi; /* 0x1C RawSystemTime_High Register */
+ u32 systime_lo; /* 0x20 SystemTime_Low Register */
+ u32 systime_hi; /* 0x24 SystemTime_High Register */
+ u32 trgt_lo; /* 0x28 TargetTime_Low Register */
+ u32 trgt_hi; /* 0x2C TargetTime_High Register */
+ u32 asms_lo; /* 0x30 Auxiliary Slave Mode Snapshot Low */
+ u32 asms_hi; /* 0x34 Auxiliary Slave Mode Snapshot High */
+ u32 amms_lo; /* 0x38 Auxiliary Master Mode Snapshot Low */
+ u32 amms_hi; /* 0x3C Auxiliary Master Mode Snapshot High */
+
+ struct ixp46x_channel_ctl channel[3];
+};
+
+/* 0x00 Time Sync Control Register Bits */
+#define TSCR_AMM (1<<3)
+#define TSCR_ASM (1<<2)
+#define TSCR_TTM (1<<1)
+#define TSCR_RST (1<<0)
+
+/* 0x04 Time Sync Event Register Bits */
+#define TSER_SNM (1<<3)
+#define TSER_SNS (1<<2)
+#define TTIPEND (1<<1)
+
+/* 0x40 Time Synchronization Channel Control Register Bits */
+#define MASTER_MODE (1<<0)
+#define TIMESTAMP_ALL (1<<1)
+
+/* 0x44 Time Synchronization Channel Event Register Bits */
+#define TX_SNAPSHOT_LOCKED (1<<0)
+#define RX_SNAPSHOT_LOCKED (1<<1)
+
+#endif
diff --git a/drivers/net/arm/ixp4xx_eth.c b/drivers/net/arm/ixp4xx_eth.c
index 9eb9b98..c56fcb6 100644
--- a/drivers/net/arm/ixp4xx_eth.c
+++ b/drivers/net/arm/ixp4xx_eth.c
@@ -30,9 +30,12 @@
#include <linux/etherdevice.h>
#include <linux/io.h>
#include <linux/kernel.h>
+#include <linux/net_tstamp.h>
#include <linux/phy.h>
#include <linux/platform_device.h>
+#include <linux/ptp_classify.h>
#include <linux/slab.h>
+#include <mach/ixp46x_ts.h>
#include <mach/npe.h>
#include <mach/qmgr.h>
@@ -67,6 +70,10 @@
#define RXFREE_QUEUE(port_id) (NPE_ID(port_id) + 26)
#define TXDONE_QUEUE 31
+#define PTP_SLAVE_MODE 1
+#define PTP_MASTER_MODE 2
+#define PORT2CHANNEL(p) NPE_ID(p->id)
+
/* TX Control Registers */
#define TX_CNTRL0_TX_EN 0x01
#define TX_CNTRL0_HALFDUPLEX 0x02
@@ -171,6 +178,8 @@ struct port {
int id; /* logical port ID */
int speed, duplex;
u8 firmware[4];
+ int hwts_tx_en;
+ int hwts_rx_en;
};
/* NPE message structure */
@@ -246,6 +255,169 @@ static int ports_open;
static struct port *npe_port_tab[MAX_NPES];
static struct dma_pool *dma_pool;
+static struct sock_filter ptp_filter[] = {
+ PTP_FILTER
+};
+
+static int ixp_ptp_match(struct sk_buff *skb, u16 uid_hi, u32 uid_lo, u16 seq)
+{
+ unsigned int type;
+ u16 *hi, *id;
+ u8 *lo, *data = skb->data;
+
+ type = sk_run_filter(skb, ptp_filter);
+
+ if (PTP_CLASS_V1_IPV4 == type) {
+
+ id = (u16 *)(data + 42 + 30);
+ hi = (u16 *)(data + 42 + 22);
+ lo = data + 42 + 24;
+
+ return (uid_hi == *hi &&
+ 0 == memcmp(&uid_lo, lo, sizeof(uid_lo)) &&
+ seq == *id);
+ }
+
+ return 0;
+}
+
+static void ixp_rx_timestamp(struct port *port, struct sk_buff *skb)
+{
+ struct skb_shared_hwtstamps *shhwtstamps;
+ struct ixp46x_ts_regs *regs;
+ u64 ns;
+ u32 ch, hi, lo, val;
+ u16 uid, seq;
+
+ if (!port->hwts_rx_en)
+ return;
+
+ ch = PORT2CHANNEL(port);
+
+ regs = (struct ixp46x_ts_regs __iomem *) IXP4XX_TIMESYNC_BASE_VIRT;
+
+ val = __raw_readl(®s->channel[ch].ch_event);
+
+ if (!(val & RX_SNAPSHOT_LOCKED))
+ return;
+
+ lo = __raw_readl(®s->channel[ch].src_uuid_lo);
+ hi = __raw_readl(®s->channel[ch].src_uuid_hi);
+
+ uid = hi & 0xffff;
+ seq = (hi >> 16) & 0xffff;
+
+ if (!ixp_ptp_match(skb, htons(uid), htonl(lo), htons(seq)))
+ goto out;
+
+ lo = __raw_readl(®s->channel[ch].rx_snap_lo);
+ hi = __raw_readl(®s->channel[ch].rx_snap_hi);
+ ns = ((u64) hi) << 32;
+ ns |= lo;
+ ns <<= TICKS_NS_SHIFT;
+
+ shhwtstamps = skb_hwtstamps(skb);
+ memset(shhwtstamps, 0, sizeof(*shhwtstamps));
+ shhwtstamps->hwtstamp = ns_to_ktime(ns);
+out:
+ __raw_writel(RX_SNAPSHOT_LOCKED, ®s->channel[ch].ch_event);
+}
+
+static void ixp_tx_timestamp(struct port *port, struct sk_buff *skb)
+{
+ struct skb_shared_hwtstamps shhwtstamps;
+ struct ixp46x_ts_regs *regs;
+ struct skb_shared_info *shtx;
+ u64 ns;
+ u32 ch, cnt, hi, lo, val;
+
+ shtx = skb_shinfo(skb);
+ if (unlikely(shtx->tx_flags & SKBTX_HW_TSTAMP && port->hwts_tx_en))
+ shtx->tx_flags |= SKBTX_IN_PROGRESS;
+ else
+ return;
+
+ ch = PORT2CHANNEL(port);
+
+ regs = (struct ixp46x_ts_regs __iomem *) IXP4XX_TIMESYNC_BASE_VIRT;
+
+ /*
+ * This really stinks, but we have to poll for the Tx time stamp.
+ * Usually, the time stamp is ready after 4 to 6 microseconds.
+ */
+ for (cnt = 0; cnt < 100; cnt++) {
+ val = __raw_readl(®s->channel[ch].ch_event);
+ if (val & TX_SNAPSHOT_LOCKED)
+ break;
+ udelay(1);
+ }
+ if (!(val & TX_SNAPSHOT_LOCKED)) {
+ shtx->tx_flags &= ~SKBTX_IN_PROGRESS;
+ return;
+ }
+
+ lo = __raw_readl(®s->channel[ch].tx_snap_lo);
+ hi = __raw_readl(®s->channel[ch].tx_snap_hi);
+ ns = ((u64) hi) << 32;
+ ns |= lo;
+ ns <<= TICKS_NS_SHIFT;
+
+ memset(&shhwtstamps, 0, sizeof(shhwtstamps));
+ shhwtstamps.hwtstamp = ns_to_ktime(ns);
+ skb_tstamp_tx(skb, &shhwtstamps);
+
+ __raw_writel(TX_SNAPSHOT_LOCKED, ®s->channel[ch].ch_event);
+}
+
+static int hwtstamp_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
+{
+ struct hwtstamp_config cfg;
+ struct ixp46x_ts_regs *regs;
+ struct port *port = netdev_priv(netdev);
+ int ch;
+
+ if (copy_from_user(&cfg, ifr->ifr_data, sizeof(cfg)))
+ return -EFAULT;
+
+ if (cfg.flags) /* reserved for future extensions */
+ return -EINVAL;
+
+ ch = PORT2CHANNEL(port);
+ regs = (struct ixp46x_ts_regs __iomem *) IXP4XX_TIMESYNC_BASE_VIRT;
+
+ switch (cfg.tx_type) {
+ case HWTSTAMP_TX_OFF:
+ port->hwts_tx_en = 0;
+ break;
+ case HWTSTAMP_TX_ON:
+ port->hwts_tx_en = 1;
+ break;
+ default:
+ return -ERANGE;
+ }
+
+ switch (cfg.rx_filter) {
+ case HWTSTAMP_FILTER_NONE:
+ port->hwts_rx_en = 0;
+ break;
+ case HWTSTAMP_FILTER_PTP_V1_L4_SYNC:
+ port->hwts_rx_en = PTP_SLAVE_MODE;
+ __raw_writel(0, ®s->channel[ch].ch_control);
+ break;
+ case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ:
+ port->hwts_rx_en = PTP_MASTER_MODE;
+ __raw_writel(MASTER_MODE, ®s->channel[ch].ch_control);
+ break;
+ default:
+ return -ERANGE;
+ }
+
+ /* Clear out any old time stamps. */
+ __raw_writel(TX_SNAPSHOT_LOCKED | RX_SNAPSHOT_LOCKED,
+ ®s->channel[ch].ch_event);
+
+ return copy_to_user(ifr->ifr_data, &cfg, sizeof(cfg)) ? -EFAULT : 0;
+}
static int ixp4xx_mdio_cmd(struct mii_bus *bus, int phy_id, int location,
int write, u16 cmd)
@@ -573,6 +745,7 @@ static int eth_poll(struct napi_struct *napi, int budget)
debug_pkt(dev, "eth_poll", skb->data, skb->len);
+ ixp_rx_timestamp(port, skb);
skb->protocol = eth_type_trans(skb, dev);
dev->stats.rx_packets++;
dev->stats.rx_bytes += skb->len;
@@ -679,14 +852,12 @@ static int eth_xmit(struct sk_buff *skb, struct net_device *dev)
return NETDEV_TX_OK;
}
memcpy_swab32(mem, (u32 *)((int)skb->data & ~3), bytes / 4);
- dev_kfree_skb(skb);
#endif
phys = dma_map_single(&dev->dev, mem, bytes, DMA_TO_DEVICE);
if (dma_mapping_error(&dev->dev, phys)) {
-#ifdef __ARMEB__
dev_kfree_skb(skb);
-#else
+#ifndef __ARMEB__
kfree(mem);
#endif
dev->stats.tx_dropped++;
@@ -728,6 +899,13 @@ static int eth_xmit(struct sk_buff *skb, struct net_device *dev)
#if DEBUG_TX
printk(KERN_DEBUG "%s: eth_xmit end\n", dev->name);
#endif
+
+ ixp_tx_timestamp(port, skb);
+ skb_tx_timestamp(skb);
+
+#ifndef __ARMEB__
+ dev_kfree_skb(skb);
+#endif
return NETDEV_TX_OK;
}
@@ -783,6 +961,9 @@ static int eth_ioctl(struct net_device *dev, struct ifreq *req, int cmd)
if (!netif_running(dev))
return -EINVAL;
+ if (cpu_is_ixp46x() && cmd == SIOCSHWTSTAMP)
+ return hwtstamp_ioctl(dev, req, cmd);
+
return phy_mii_ioctl(port->phydev, req, cmd);
}
@@ -1171,6 +1352,11 @@ static int __devinit eth_init_one(struct platform_device *pdev)
char phy_id[MII_BUS_ID_SIZE + 3];
int err;
+ if (ptp_filter_init(ptp_filter, ARRAY_SIZE(ptp_filter))) {
+ pr_err("ixp4xx_eth: bad ptp filter\n");
+ return -EINVAL;
+ }
+
if (!(dev = alloc_etherdev(sizeof(struct port))))
return -ENOMEM;
diff --git a/drivers/ptp/Kconfig b/drivers/ptp/Kconfig
index 12eb844..fcfafd0 100644
--- a/drivers/ptp/Kconfig
+++ b/drivers/ptp/Kconfig
@@ -40,4 +40,17 @@ config PTP_1588_CLOCK_GIANFAR
To compile this driver as a module, choose M here: the module
will be called gianfar_ptp.
+config PTP_1588_CLOCK_IXP46X
+ tristate "Intel IXP46x as PTP clock"
+ depends on PTP_1588_CLOCK
+ depends on IXP4XX_ETH
+ help
+ This driver adds support for using the IXP46X as a PTP
+ clock. This clock is only useful if your PTP programs are
+ getting hardware time stamps on the PTP Ethernet packets
+ using the SO_TIMESTAMPING API.
+
+ To compile this driver as a module, choose M here: the module
+ will be called ptp_ixp46x.
+
endmenu
diff --git a/drivers/ptp/Makefile b/drivers/ptp/Makefile
index 480e2af..f6933e8 100644
--- a/drivers/ptp/Makefile
+++ b/drivers/ptp/Makefile
@@ -4,3 +4,4 @@
ptp-y := ptp_clock.o ptp_chardev.o ptp_sysfs.o
obj-$(CONFIG_PTP_1588_CLOCK) += ptp.o
+obj-$(CONFIG_PTP_1588_CLOCK_IXP46X) += ptp_ixp46x.o
diff --git a/drivers/ptp/ptp_ixp46x.c b/drivers/ptp/ptp_ixp46x.c
new file mode 100644
index 0000000..41c78cf
--- /dev/null
+++ b/drivers/ptp/ptp_ixp46x.c
@@ -0,0 +1,332 @@
+/*
+ * PTP 1588 clock using the IXP46X
+ *
+ * Copyright (C) 2010 OMICRON electronics GmbH
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+#include <linux/device.h>
+#include <linux/err.h>
+#include <linux/gpio.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <linux/irq.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+
+#include <linux/ptp_clock_kernel.h>
+#include <mach/ixp46x_ts.h>
+
+#define DRIVER "ptp_ixp46x"
+#define N_EXT_TS 2
+#define MASTER_GPIO 8
+#define MASTER_IRQ 25
+#define SLAVE_GPIO 7
+#define SLAVE_IRQ 24
+
+struct ixp_clock {
+ struct ixp46x_ts_regs *regs;
+ struct ptp_clock *ptp_clock;
+ struct ptp_clock_info caps;
+ int exts0_enabled;
+ int exts1_enabled;
+};
+
+DEFINE_SPINLOCK(register_lock);
+
+/*
+ * Register access functions
+ */
+
+static u64 ixp_systime_read(struct ixp46x_ts_regs *regs)
+{
+ u64 ns;
+ u32 lo, hi;
+
+ lo = __raw_readl(®s->systime_lo);
+ hi = __raw_readl(®s->systime_hi);
+
+ ns = ((u64) hi) << 32;
+ ns |= lo;
+ ns <<= TICKS_NS_SHIFT;
+
+ return ns;
+}
+
+static void ixp_systime_write(struct ixp46x_ts_regs *regs, u64 ns)
+{
+ u32 hi, lo;
+
+ ns >>= TICKS_NS_SHIFT;
+ hi = ns >> 32;
+ lo = ns & 0xffffffff;
+
+ __raw_writel(lo, ®s->systime_lo);
+ __raw_writel(hi, ®s->systime_hi);
+}
+
+/*
+ * Interrupt service routine
+ */
+
+static irqreturn_t isr(int irq, void *priv)
+{
+ struct ixp_clock *ixp_clock = priv;
+ struct ixp46x_ts_regs *regs = ixp_clock->regs;
+ struct ptp_clock_event event;
+ u32 ack = 0, lo, hi, val;
+
+ val = __raw_readl(®s->event);
+
+ if (val & TSER_SNS) {
+ ack |= TSER_SNS;
+ if (ixp_clock->exts0_enabled) {
+ hi = __raw_readl(®s->asms_hi);
+ lo = __raw_readl(®s->asms_lo);
+ event.type = PTP_CLOCK_EXTTS;
+ event.index = 0;
+ event.timestamp = ((u64) hi) << 32;
+ event.timestamp |= lo;
+ event.timestamp <<= TICKS_NS_SHIFT;
+ ptp_clock_event(ixp_clock->ptp_clock, &event);
+ }
+ }
+
+ if (val & TSER_SNM) {
+ ack |= TSER_SNM;
+ if (ixp_clock->exts1_enabled) {
+ hi = __raw_readl(®s->amms_hi);
+ lo = __raw_readl(®s->amms_lo);
+ event.type = PTP_CLOCK_EXTTS;
+ event.index = 1;
+ event.timestamp = ((u64) hi) << 32;
+ event.timestamp |= lo;
+ event.timestamp <<= TICKS_NS_SHIFT;
+ ptp_clock_event(ixp_clock->ptp_clock, &event);
+ }
+ }
+
+ if (val & TTIPEND)
+ ack |= TTIPEND; /* this bit seems to be always set */
+
+ if (ack) {
+ __raw_writel(ack, ®s->event);
+ return IRQ_HANDLED;
+ } else
+ return IRQ_NONE;
+}
+
+/*
+ * PTP clock operations
+ */
+
+static int ptp_ixp_adjfreq(struct ptp_clock_info *ptp, s32 ppb)
+{
+ u64 adj;
+ u32 diff, addend;
+ int neg_adj = 0;
+ struct ixp_clock *ixp_clock = container_of(ptp, struct ixp_clock, caps);
+ struct ixp46x_ts_regs *regs = ixp_clock->regs;
+
+ if (ppb < 0) {
+ neg_adj = 1;
+ ppb = -ppb;
+ }
+ addend = DEFAULT_ADDEND;
+ adj = addend;
+ adj *= ppb;
+ diff = div_u64(adj, 1000000000ULL);
+
+ addend = neg_adj ? addend - diff : addend + diff;
+
+ __raw_writel(addend, ®s->addend);
+
+ return 0;
+}
+
+static int ptp_ixp_adjtime(struct ptp_clock_info *ptp, s64 delta)
+{
+ s64 now;
+ unsigned long flags;
+ struct ixp_clock *ixp_clock = container_of(ptp, struct ixp_clock, caps);
+ struct ixp46x_ts_regs *regs = ixp_clock->regs;
+
+ spin_lock_irqsave(®ister_lock, flags);
+
+ now = ixp_systime_read(regs);
+ now += delta;
+ ixp_systime_write(regs, now);
+
+ spin_unlock_irqrestore(®ister_lock, flags);
+
+ return 0;
+}
+
+static int ptp_ixp_gettime(struct ptp_clock_info *ptp, struct timespec *ts)
+{
+ u64 ns;
+ u32 remainder;
+ unsigned long flags;
+ struct ixp_clock *ixp_clock = container_of(ptp, struct ixp_clock, caps);
+ struct ixp46x_ts_regs *regs = ixp_clock->regs;
+
+ spin_lock_irqsave(®ister_lock, flags);
+
+ ns = ixp_systime_read(regs);
+
+ spin_unlock_irqrestore(®ister_lock, flags);
+
+ ts->tv_sec = div_u64_rem(ns, 1000000000, &remainder);
+ ts->tv_nsec = remainder;
+ return 0;
+}
+
+static int ptp_ixp_settime(struct ptp_clock_info *ptp,
+ const struct timespec *ts)
+{
+ u64 ns;
+ unsigned long flags;
+ struct ixp_clock *ixp_clock = container_of(ptp, struct ixp_clock, caps);
+ struct ixp46x_ts_regs *regs = ixp_clock->regs;
+
+ ns = ts->tv_sec * 1000000000ULL;
+ ns += ts->tv_nsec;
+
+ spin_lock_irqsave(®ister_lock, flags);
+
+ ixp_systime_write(regs, ns);
+
+ spin_unlock_irqrestore(®ister_lock, flags);
+
+ return 0;
+}
+
+static int ptp_ixp_enable(struct ptp_clock_info *ptp,
+ struct ptp_clock_request *rq, int on)
+{
+ struct ixp_clock *ixp_clock = container_of(ptp, struct ixp_clock, caps);
+
+ switch (rq->type) {
+ case PTP_CLK_REQ_EXTTS:
+ switch (rq->extts.index) {
+ case 0:
+ ixp_clock->exts0_enabled = on ? 1 : 0;
+ break;
+ case 1:
+ ixp_clock->exts1_enabled = on ? 1 : 0;
+ break;
+ default:
+ return -EINVAL;
+ }
+ return 0;
+ default:
+ break;
+ }
+
+ return -EOPNOTSUPP;
+}
+
+static struct ptp_clock_info ptp_ixp_caps = {
+ .owner = THIS_MODULE,
+ .name = "IXP46X timer",
+ .max_adj = 66666655,
+ .n_ext_ts = N_EXT_TS,
+ .pps = 0,
+ .adjfreq = ptp_ixp_adjfreq,
+ .adjtime = ptp_ixp_adjtime,
+ .gettime = ptp_ixp_gettime,
+ .settime = ptp_ixp_settime,
+ .enable = ptp_ixp_enable,
+};
+
+/* module operations */
+
+static struct ixp_clock ixp_clock;
+
+static int setup_interrupt(int gpio)
+{
+ int irq;
+
+ gpio_line_config(gpio, IXP4XX_GPIO_IN);
+
+ irq = gpio_to_irq(gpio);
+
+ if (NO_IRQ == irq)
+ return NO_IRQ;
+
+ if (set_irq_type(irq, IRQF_TRIGGER_FALLING)) {
+ pr_err("cannot set trigger type for irq %d\n", irq);
+ return NO_IRQ;
+ }
+
+ if (request_irq(irq, isr, 0, DRIVER, &ixp_clock)) {
+ pr_err("request_irq failed for irq %d\n", irq);
+ return NO_IRQ;
+ }
+
+ return irq;
+}
+
+static void __exit ptp_ixp_exit(void)
+{
+ free_irq(MASTER_IRQ, &ixp_clock);
+ free_irq(SLAVE_IRQ, &ixp_clock);
+ ptp_clock_unregister(ixp_clock.ptp_clock);
+}
+
+static int __init ptp_ixp_init(void)
+{
+ if (!cpu_is_ixp46x())
+ return -ENODEV;
+
+ ixp_clock.regs =
+ (struct ixp46x_ts_regs __iomem *) IXP4XX_TIMESYNC_BASE_VIRT;
+
+ ixp_clock.caps = ptp_ixp_caps;
+
+ ixp_clock.ptp_clock = ptp_clock_register(&ixp_clock.caps);
+
+ if (IS_ERR(ixp_clock.ptp_clock))
+ return PTR_ERR(ixp_clock.ptp_clock);
+
+ __raw_writel(DEFAULT_ADDEND, &ixp_clock.regs->addend);
+ __raw_writel(1, &ixp_clock.regs->trgt_lo);
+ __raw_writel(0, &ixp_clock.regs->trgt_hi);
+ __raw_writel(TTIPEND, &ixp_clock.regs->event);
+
+ if (MASTER_IRQ != setup_interrupt(MASTER_GPIO)) {
+ pr_err("failed to setup gpio %d as irq\n", MASTER_GPIO);
+ goto no_master;
+ }
+ if (SLAVE_IRQ != setup_interrupt(SLAVE_GPIO)) {
+ pr_err("failed to setup gpio %d as irq\n", SLAVE_GPIO);
+ goto no_slave;
+ }
+
+ return 0;
+no_slave:
+ free_irq(MASTER_IRQ, &ixp_clock);
+no_master:
+ ptp_clock_unregister(ixp_clock.ptp_clock);
+ return -ENODEV;
+}
+
+module_init(ptp_ixp_init);
+module_exit(ptp_ixp_exit);
+
+MODULE_AUTHOR("Richard Cochran <richard.cochran@omicron.at>");
+MODULE_DESCRIPTION("PTP clock using the IXP46X timer");
+MODULE_LICENSE("GPL");
--
1.7.0.4
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