* [PATCH] IrDA: smsc-ircc2, smcinit support for ALi ISA bridges
@ 2006-04-14 10:16 Samuel Ortiz
2006-04-14 23:03 ` David S. Miller
0 siblings, 1 reply; 2+ messages in thread
From: Samuel Ortiz @ 2006-04-14 10:16 UTC (permalink / raw)
To: ext David S. Miller; +Cc: netdev, Jean Tourrilhes, IrDA users
Hi David,
This patch enables support for ALi ISA bridges when we run the smcinit code.
It is needed to properly configure some Toshiba laptops.
Patch from Linus Walleij <triad@df.lth.se>
Signed-off-by: Samuel Ortiz <samuel.ortiz@nokia.com>
diff --git a/drivers/net/irda/smsc-ircc2.c b/drivers/net/irda/smsc-ircc2.c
index bbcfc8e..58f76ce 100644
--- a/drivers/net/irda/smsc-ircc2.c
+++ b/drivers/net/irda/smsc-ircc2.c
@@ -225,6 +225,8 @@ static int __init smsc_superio_lpc(unsig
#ifdef CONFIG_PCI
static int __init preconfigure_smsc_chip(struct smsc_ircc_subsystem_configuration *conf);
static int __init preconfigure_through_82801(struct pci_dev *dev, struct smsc_ircc_subsystem_configuration *conf);
+static void __init preconfigure_ali_port(struct pci_dev *dev,
+ unsigned short port);
static int __init preconfigure_through_ali(struct pci_dev *dev, struct smsc_ircc_subsystem_configuration *conf);
static int __init smsc_ircc_preconfigure_subsystems(unsigned short ircc_cfg,
unsigned short ircc_fir,
@@ -2327,9 +2329,14 @@ static int __init smsc_superio_lpc(unsig
* pre-configuration not properly done by the BIOS (especially laptops)
* This code is based in part on smcinit.c, tosh1800-smcinit.c
* and tosh2450-smcinit.c. The table lists the device entries
- * for ISA bridges with an LPC (Local Peripheral Configurator)
- * that are in turn used to configure the SMSC device with default
- * SIR and FIR I/O ports, DMA and IRQ.
+ * for ISA bridges with an LPC (Low Pin Count) controller which
+ * handles the communication with the SMSC device. After the LPC
+ * controller is initialized through PCI, the SMSC device is initialized
+ * through a dedicated port in the ISA port-mapped I/O area, this latter
+ * area is used to configure the SMSC device with default
+ * SIR and FIR I/O ports, DMA and IRQ. Different vendors have
+ * used different sets of parameters and different control port
+ * addresses making a subsystem device table necessary.
*/
#ifdef CONFIG_PCI
#define PCIID_VENDOR_INTEL 0x8086
@@ -2340,9 +2347,10 @@ static struct smsc_ircc_subsystem_config
.device = 0x24cc,
.subvendor = 0x103c,
.subdevice = 0x088c,
- .sir_io = 0x02f8, /* Quite certain these are the same for nc8000 as for nc6000 */
+ /* Quite certain these are the same for nc8000 as for nc6000 */
+ .sir_io = 0x02f8,
.fir_io = 0x0130,
- .fir_irq = 0x09,
+ .fir_irq = 0x05,
.fir_dma = 0x03,
.cfg_base = 0x004e,
.preconfigure = preconfigure_through_82801,
@@ -2355,60 +2363,79 @@ static struct smsc_ircc_subsystem_config
.subdevice = 0x0890,
.sir_io = 0x02f8,
.fir_io = 0x0130,
- .fir_irq = 0x09,
+ .fir_irq = 0x05,
.fir_dma = 0x03,
.cfg_base = 0x004e,
.preconfigure = preconfigure_through_82801,
.name = "HP nc6000",
},
{
- .vendor = PCIID_VENDOR_INTEL, /* Intel 82801DB/DBL (ICH4/ICH4-L) LPC Interface Bridge */
+ /* Intel 82801DB/DBL (ICH4/ICH4-L) LPC Interface Bridge */
+ .vendor = PCIID_VENDOR_INTEL,
.device = 0x24c0,
.subvendor = 0x1179,
- .subdevice = 0xffff, /* 0xffff is "any", Not sure, 0x0001 or 0x0002 */
+ .subdevice = 0xffff, /* 0xffff is "any" */
.sir_io = 0x03f8,
.fir_io = 0x0130,
.fir_irq = 0x07,
.fir_dma = 0x01,
.cfg_base = 0x002e,
.preconfigure = preconfigure_through_82801,
- .name = "Toshiba Satellite 2450",
+ .name = "Toshiba laptop with Intel 82801DB/DBL LPC bridge",
},
{
.vendor = PCIID_VENDOR_INTEL, /* Intel 82801CAM ISA bridge */
- .device = 0x248c, /* Some use 24cc? */
+ .device = 0x248c,
+ .subvendor = 0x1179,
+ .subdevice = 0xffff, /* 0xffff is "any" */
+ .sir_io = 0x03f8,
+ .fir_io = 0x0130,
+ .fir_irq = 0x03,
+ .fir_dma = 0x03,
+ .cfg_base = 0x002e,
+ .preconfigure = preconfigure_through_82801,
+ .name = "Toshiba laptop with Intel 82801CAM ISA bridge",
+ },
+ {
+ /* 82801DBM (ICH4-M) LPC Interface Bridge */
+ .vendor = PCIID_VENDOR_INTEL,
+ .device = 0x24cc,
.subvendor = 0x1179,
- .subdevice = 0xffff, /* 0xffff is "any", Not sure, 0x0001 or 0x0002 */
+ .subdevice = 0xffff, /* 0xffff is "any" */
.sir_io = 0x03f8,
.fir_io = 0x0130,
.fir_irq = 0x03,
.fir_dma = 0x03,
.cfg_base = 0x002e,
.preconfigure = preconfigure_through_82801,
- .name = "Toshiba Satellite 5100/5200, Tecra 9100",
+ .name = "Toshiba laptop with Intel 8281DBM LPC bridge",
},
{
- .vendor = PCIID_VENDOR_ALI, /* ALi M1533/M1535 PCI to ISA Bridge [Aladdin IV/V/V+] */
+ /* ALi M1533/M1535 PCI to ISA Bridge [Aladdin IV/V/V+] */
+ .vendor = PCIID_VENDOR_ALI,
.device = 0x1533,
.subvendor = 0x1179,
- .subdevice = 0xffff, /* 0xffff is "any", Not sure, 0x0001 or 0x0002 */
+ .subdevice = 0xffff, /* 0xffff is "any" */
.sir_io = 0x02e8,
.fir_io = 0x02f8,
.fir_irq = 0x07,
.fir_dma = 0x03,
.cfg_base = 0x002e,
.preconfigure = preconfigure_through_ali,
- .name = "Toshiba Satellite 1800",
+ .name = "Toshiba laptop with ALi ISA bridge",
},
{ } // Terminator
};
/*
- * This sets up the basic SMSC parameters (FIR port, SIR port, FIR DMA, FIR IRQ)
+ * This sets up the basic SMSC parameters
+ * (FIR port, SIR port, FIR DMA, FIR IRQ)
* through the chip configuration port.
*/
-static int __init preconfigure_smsc_chip(struct smsc_ircc_subsystem_configuration *conf)
+static int __init preconfigure_smsc_chip(struct
+ smsc_ircc_subsystem_configuration
+ *conf)
{
unsigned short iobase = conf->cfg_base;
unsigned char tmpbyte;
@@ -2416,7 +2443,9 @@ static int __init preconfigure_smsc_chip
outb(LPC47N227_CFGACCESSKEY, iobase); // enter configuration state
outb(SMSCSIOFLAT_DEVICEID_REG, iobase); // set for device ID
tmpbyte = inb(iobase +1); // Read device ID
- IRDA_DEBUG(0, "Detected Chip id: 0x%02x, setting up registers...\n",tmpbyte);
+ IRDA_DEBUG(0,
+ "Detected Chip id: 0x%02x, setting up registers...\n",
+ tmpbyte);
/* Disable UART1 and set up SIR I/O port */
outb(0x24, iobase); // select CR24 - UART1 base addr
@@ -2426,6 +2455,7 @@ static int __init preconfigure_smsc_chip
tmpbyte = inb(iobase + 1);
if (tmpbyte != (conf->sir_io >> 2) ) {
IRDA_WARNING("ERROR: could not configure SIR ioport.\n");
+ IRDA_WARNING("Try to supply ircc_cfg argument.\n");
return -ENXIO;
}
@@ -2461,7 +2491,8 @@ static int __init preconfigure_smsc_chip
outb(SMSCSIOFLAT_UARTMODE0C_REG, iobase); // CR0C - UART mode
tmpbyte = inb(iobase + 1);
- tmpbyte &= ~SMSCSIOFLAT_UART2MODE_MASK | SMSCSIOFLAT_UART2MODE_VAL_IRDA;
+ tmpbyte &= ~SMSCSIOFLAT_UART2MODE_MASK |
+ SMSCSIOFLAT_UART2MODE_VAL_IRDA;
outb(tmpbyte, iobase + 1); // enable IrDA (HPSIR) mode, high speed
outb(LPC47N227_APMBOOTDRIVE_REG, iobase); // CR07 - Auto Pwr Mgt/boot drive sel
@@ -2486,53 +2517,226 @@ static int __init preconfigure_smsc_chip
return 0;
}
-/* 82801CAM registers */
+/* 82801CAM generic registers */
#define VID 0x00
#define DID 0x02
-#define PIRQA_ROUT 0x60
+#define PIRQ_A_D_ROUT 0x60
+#define SIRQ_CNTL 0x64
+#define PIRQ_E_H_ROUT 0x68
#define PCI_DMA_C 0x90
+/* LPC-specific registers */
#define COM_DEC 0xe0
+#define GEN1_DEC 0xe4
#define LPC_EN 0xe6
#define GEN2_DEC 0xec
/*
- * Sets up the I/O range using the 82801CAM ISA bridge, 82801DBM LPC bridge or
- * Intel 82801DB/DBL (ICH4/ICH4-L) LPC Interface Bridge. They all work the same way!
+ * Sets up the I/O range using the 82801CAM ISA bridge, 82801DBM LPC bridge
+ * or Intel 82801DB/DBL (ICH4/ICH4-L) LPC Interface Bridge.
+ * They all work the same way!
*/
static int __init preconfigure_through_82801(struct pci_dev *dev,
- struct smsc_ircc_subsystem_configuration *conf)
+ struct
+ smsc_ircc_subsystem_configuration
+ *conf)
{
unsigned short tmpword;
- int ret;
+ unsigned char tmpbyte;
- IRDA_MESSAGE("Setting up the SMSC device via the 82801 controller.\n");
- pci_write_config_byte(dev, COM_DEC, 0x10);
+ IRDA_MESSAGE("Setting up Intel 82801 controller and SMSC device\n");
+ /*
+ * Select the range for the COMA COM port (SIR)
+ * Register COM_DEC:
+ * Bit 7: reserved
+ * Bit 6-4, COMB decode range
+ * Bit 3: reserved
+ * Bit 2-0, COMA decode range
+ *
+ * Decode ranges:
+ * 000 = 0x3f8-0x3ff (COM1)
+ * 001 = 0x2f8-0x2ff (COM2)
+ * 010 = 0x220-0x227
+ * 011 = 0x228-0x22f
+ * 100 = 0x238-0x23f
+ * 101 = 0x2e8-0x2ef (COM4)
+ * 110 = 0x338-0x33f
+ * 111 = 0x3e8-0x3ef (COM3)
+ */
+ pci_read_config_byte(dev, COM_DEC, &tmpbyte);
+ tmpbyte &= 0xf8; /* mask COMA bits */
+ switch(conf->sir_io) {
+ case 0x3f8:
+ tmpbyte |= 0x00;
+ break;
+ case 0x2f8:
+ tmpbyte |= 0x01;
+ break;
+ case 0x220:
+ tmpbyte |= 0x02;
+ break;
+ case 0x228:
+ tmpbyte |= 0x03;
+ break;
+ case 0x238:
+ tmpbyte |= 0x04;
+ break;
+ case 0x2e8:
+ tmpbyte |= 0x05;
+ break;
+ case 0x338:
+ tmpbyte |= 0x06;
+ break;
+ case 0x3e8:
+ tmpbyte |= 0x07;
+ break;
+ default:
+ tmpbyte |= 0x01; /* COM2 default */
+ }
+ IRDA_DEBUG(1, "COM_DEC (write): 0x%02x\n", tmpbyte);
+ pci_write_config_byte(dev, COM_DEC, tmpbyte);
- /* Enable LPC */
- pci_read_config_word(dev, LPC_EN, &tmpword); /* LPC_EN register */
- tmpword &= 0xfffd; /* mask bit 1 */
- tmpword |= 0x0001; /* set bit 0 : COMA addr range enable */
+ /* Enable Low Pin Count interface */
+ pci_read_config_word(dev, LPC_EN, &tmpword);
+ /* These seem to be set up at all times,
+ * just make sure it is properly set.
+ */
+ switch(conf->cfg_base) {
+ case 0x04e:
+ tmpword |= 0x2000;
+ break;
+ case 0x02e:
+ tmpword |= 0x1000;
+ break;
+ case 0x062:
+ tmpword |= 0x0800;
+ break;
+ case 0x060:
+ tmpword |= 0x0400;
+ break;
+ default:
+ IRDA_WARNING("Uncommon I/O base address: 0x%04x\n",
+ conf->cfg_base);
+ break;
+ }
+ tmpword &= 0xfffd; /* disable LPC COMB */
+ tmpword |= 0x0001; /* set bit 0 : enable LPC COMA addr range (GEN2) */
+ IRDA_DEBUG(1, "LPC_EN (write): 0x%04x\n", tmpword);
pci_write_config_word(dev, LPC_EN, tmpword);
- /* Setup DMA */
- pci_write_config_word(dev, PCI_DMA_C, 0xc0c0); /* LPC I/F DMA on, channel 3 -- rtm (?? PCI DMA ?) */
- pci_write_config_word(dev, GEN2_DEC, 0x131); /* LPC I/F 2nd decode range */
+ /*
+ * Configure LPC DMA channel
+ * PCI_DMA_C bits:
+ * Bit 15-14: DMA channel 7 select
+ * Bit 13-12: DMA channel 6 select
+ * Bit 11-10: DMA channel 5 select
+ * Bit 9-8: Reserved
+ * Bit 7-6: DMA channel 3 select
+ * Bit 5-4: DMA channel 2 select
+ * Bit 3-2: DMA channel 1 select
+ * Bit 1-0: DMA channel 0 select
+ * 00 = Reserved value
+ * 01 = PC/PCI DMA
+ * 10 = Reserved value
+ * 11 = LPC I/F DMA
+ */
+ pci_read_config_word(dev, PCI_DMA_C, &tmpword);
+ switch(conf->fir_dma) {
+ case 0x07:
+ tmpword |= 0xc000;
+ break;
+ case 0x06:
+ tmpword |= 0x3000;
+ break;
+ case 0x05:
+ tmpword |= 0x0c00;
+ break;
+ case 0x03:
+ tmpword |= 0x00c0;
+ break;
+ case 0x02:
+ tmpword |= 0x0030;
+ break;
+ case 0x01:
+ tmpword |= 0x000c;
+ break;
+ case 0x00:
+ tmpword |= 0x0003;
+ break;
+ default:
+ break; /* do not change settings */
+ }
+ IRDA_DEBUG(1, "PCI_DMA_C (write): 0x%04x\n", tmpword);
+ pci_write_config_word(dev, PCI_DMA_C, tmpword);
+
+ /*
+ * GEN2_DEC bits:
+ * Bit 15-4: Generic I/O range
+ * Bit 3-1: reserved (read as 0)
+ * Bit 0: enable GEN2 range on LPC I/F
+ */
+ tmpword = conf->fir_io & 0xfff8;
+ tmpword |= 0x0001;
+ IRDA_DEBUG(1, "GEN2_DEC (write): 0x%04x\n", tmpword);
+ pci_write_config_word(dev, GEN2_DEC, tmpword);
/* Pre-configure chip */
- ret = preconfigure_smsc_chip(conf);
+ return preconfigure_smsc_chip(conf);
+}
- /* Disable LPC */
- pci_read_config_word(dev, LPC_EN, &tmpword); /* LPC_EN register */
- tmpword &= 0xfffc; /* mask bit 1 and bit 0, COMA addr range disable */
- pci_write_config_word(dev, LPC_EN, tmpword);
- return ret;
+/*
+ * Pre-configure a certain port on the ALi 1533 bridge.
+ * This is based on reverse-engineering since ALi does not
+ * provide any data sheet for the 1533 chip.
+ */
+static void __init preconfigure_ali_port(struct pci_dev *dev,
+ unsigned short port)
+{
+ unsigned char reg;
+ /* These bits obviously control the different ports */
+ unsigned char mask;
+ unsigned char tmpbyte;
+
+ switch(port) {
+ case 0x0130:
+ case 0x0178:
+ reg = 0xb0;
+ mask = 0x80;
+ break;
+ case 0x03f8:
+ reg = 0xb4;
+ mask = 0x80;
+ break;
+ case 0x02f8:
+ reg = 0xb4;
+ mask = 0x30;
+ break;
+ case 0x02e8:
+ reg = 0xb4;
+ mask = 0x08;
+ break;
+ default:
+ IRDA_ERROR("Failed to configure unsupported port on ALi 1533 bridge: 0x%04x\n", port);
+ return;
+ }
+
+ pci_read_config_byte(dev, reg, &tmpbyte);
+ /* Turn on the right bits */
+ tmpbyte |= mask;
+ pci_write_config_byte(dev, reg, tmpbyte);
+ IRDA_MESSAGE("Activated ALi 1533 ISA bridge port 0x%04x.\n", port);
+ return;
}
static int __init preconfigure_through_ali(struct pci_dev *dev,
- struct smsc_ircc_subsystem_configuration *conf)
-{
- /* TODO: put in ALi 1533 configuration here. */
- IRDA_MESSAGE("SORRY: %s has an unsupported bridge controller (ALi): not pre-configured.\n", conf->name);
- return -ENODEV;
+ struct
+ smsc_ircc_subsystem_configuration
+ *conf)
+{
+ /* Configure the two ports on the ALi 1533 */
+ preconfigure_ali_port(dev, conf->sir_io);
+ preconfigure_ali_port(dev, conf->fir_io);
+
+ /* Pre-configure chip */
+ return preconfigure_smsc_chip(conf);
}
static int __init smsc_ircc_preconfigure_subsystems(unsigned short ircc_cfg,
@@ -2552,9 +2756,10 @@ static int __init smsc_ircc_preconfigure
struct smsc_ircc_subsystem_configuration *conf;
/*
- * Cache the subsystem vendor/device: some manufacturers fail to set
- * this for all components, so we save it in case there is just
- * 0x0000 0x0000 on the device we want to check.
+ * Cache the subsystem vendor/device:
+ * some manufacturers fail to set this for all components,
+ * so we save it in case there is just 0x0000 0x0000 on the
+ * device we want to check.
*/
if (dev->subsystem_vendor != 0x0000U) {
ss_vendor = dev->subsystem_vendor;
@@ -2564,13 +2769,20 @@ static int __init smsc_ircc_preconfigure
for( ; conf->subvendor; conf++) {
if(conf->vendor == dev->vendor &&
conf->device == dev->device &&
- conf->subvendor == ss_vendor && /* Sometimes these are cached values */
- (conf->subdevice == ss_device || conf->subdevice == 0xffff)) {
- struct smsc_ircc_subsystem_configuration tmpconf;
+ conf->subvendor == ss_vendor &&
+ /* Sometimes these are cached values */
+ (conf->subdevice == ss_device ||
+ conf->subdevice == 0xffff)) {
+ struct smsc_ircc_subsystem_configuration
+ tmpconf;
- memcpy(&tmpconf, conf, sizeof(struct smsc_ircc_subsystem_configuration));
+ memcpy(&tmpconf, conf,
+ sizeof(struct smsc_ircc_subsystem_configuration));
- /* Override the default values with anything passed in as parameter */
+ /*
+ * Override the default values with anything
+ * passed in as parameter
+ */
if (ircc_cfg != 0)
tmpconf.cfg_base = ircc_cfg;
if (ircc_fir != 0)
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH] IrDA: smsc-ircc2, smcinit support for ALi ISA bridges
2006-04-14 10:16 [PATCH] IrDA: smsc-ircc2, smcinit support for ALi ISA bridges Samuel Ortiz
@ 2006-04-14 23:03 ` David S. Miller
0 siblings, 0 replies; 2+ messages in thread
From: David S. Miller @ 2006-04-14 23:03 UTC (permalink / raw)
To: samuel.ortiz; +Cc: netdev, jt, irda-users
From: Samuel Ortiz <samuel.ortiz@nokia.com>
Date: Fri, 14 Apr 2006 13:16:18 +0300
> Hi David,
>
> This patch enables support for ALi ISA bridges when we run the smcinit code.
> It is needed to properly configure some Toshiba laptops.
>
> Patch from Linus Walleij <triad@df.lth.se>
> Signed-off-by: Samuel Ortiz <samuel.ortiz@nokia.com>
Also applied, thanks.
^ permalink raw reply [flat|nested] 2+ messages in thread
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2006-04-14 10:16 [PATCH] IrDA: smsc-ircc2, smcinit support for ALi ISA bridges Samuel Ortiz
2006-04-14 23:03 ` David S. Miller
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