[BK PATCH] PCI hotplug changes for 2.5.69

[BK PATCH] PCI hotplug changes for 2.5.69

[Greg KH]

Hi,

Here's some patches that fix the pci hotplug drivers so that they now
work again.  Sorry it's taken so long to get these done...

I've also included a patch from Torben Mathiasen that adds PCI-X support
to the Compaq PCI Hotplug driver.  This patch is in the 2.4 tree
already.  There are also a few other minor fixes and cleanups in this
fixing build configurations, and removing unused variables.


Please pull from:  bk://kernel.bkbits.net/gregkh/linux/pci-2.5


thanks,

greg k-h


 Documentation/DocBook/kernel-api.tmpl |    1 
 drivers/acpi/acpi_ksyms.c             |    1 
 drivers/hotplug/Kconfig               |    2 
 drivers/hotplug/acpiphp_glue.c        |    6 
 drivers/hotplug/cpqphp.h              |  414 ++++++++++++++++++++++++++++++++--
 drivers/hotplug/cpqphp_core.c         |  114 ++++++++-
 drivers/hotplug/cpqphp_ctrl.c         |  296 +++++++++++++-----------
 drivers/hotplug/cpqphp_pci.c          |   21 -
 drivers/hotplug/ibmphp_core.c         |   14 -
 9 files changed, 688 insertions(+), 181 deletions(-)
-----


<rusty:linux.co.intel.com>:
  o PCI Hotplug: kernel-api docbook fix for now non-existant PCI hotplug

<torben.mathiasen:hp.com>:
  o PCI Hotplug: cpqphp 66/100/133MHz PCI-X support

Greg Kroah-Hartman:
  o PCI Hotplug: export the acpi_resource_to_address64 function, as the acpi pci hotplug driver needs it
  o PCI Hotplug: fix dependancies for CONFIG_HOTPLUG_PCI_ACPI
  o PCI Hotplug: fix up the acpi driver to work properly again
  o PCI Hotplug: fix compiler warning in ibm driver
  o PCI Hotplug: fix up the ibm driver to work properly again
  o PCI Hotplug: fix up the compaq driver to work properly again

Hanna V. Linder:
  o patch: remove unnecessary proc stuff from controller struct

Re: [PATCH] PCI hotplug changes for 2.5.69

[Greg KH]

ChangeSet 1.1085, 2003/05/06 15:43:13-07:00, greg@kroah.com

[PATCH] PCI Hotplug: fix dependancies for CONFIG_HOTPLUG_PCI_ACPI

Thanks to Adrian Bunk <bunk@fs.tum.de> for pointing this out.


 drivers/hotplug/Kconfig |    2 +-
 1 files changed, 1 insertion(+), 1 deletion(-)


diff -Nru a/drivers/hotplug/Kconfig b/drivers/hotplug/Kconfig
--- a/drivers/hotplug/Kconfig	Tue May  6 15:55:45 2003
+++ b/drivers/hotplug/Kconfig	Tue May  6 15:55:45 2003
@@ -61,7 +61,7 @@
 
 config HOTPLUG_PCI_ACPI
 	tristate "ACPI PCI Hotplug driver"
-	depends on ACPI && HOTPLUG_PCI
+	depends on ACPI_BUS && HOTPLUG_PCI
 	help
 	  Say Y here if you have a system that supports PCI Hotplug using
 	  ACPI.

Re: [PATCH] PCI hotplug changes for 2.5.69

[Greg KH]

ChangeSet 1.1084, 2003/05/06 15:35:45-07:00, greg@kroah.com

[PATCH] PCI Hotplug: fix up the acpi driver to work properly again.


 drivers/hotplug/acpiphp_glue.c |    6 +++++-
 1 files changed, 5 insertions(+), 1 deletion(-)


diff -Nru a/drivers/hotplug/acpiphp_glue.c b/drivers/hotplug/acpiphp_glue.c
--- a/drivers/hotplug/acpiphp_glue.c	Tue May  6 15:55:50 2003
+++ b/drivers/hotplug/acpiphp_glue.c	Tue May  6 15:55:50 2003
@@ -806,6 +806,7 @@
 	struct list_head *l;
 	struct acpiphp_func *func;
 	int retval = 0;
+	int num;
 
 	if (slot->flags & SLOT_ENABLED)
 		goto err_exit;
@@ -825,7 +826,10 @@
 		goto err_exit;
 
 	/* returned `dev' is the *first function* only! */
-	dev = pci_scan_slot(slot->bridge->pci_bus, PCI_DEVFN(slot->device, 0));
+	num = pci_scan_slot(slot->bridge->pci_bus, PCI_DEVFN(slot->device, 0));
+	if (num)
+		pci_bus_add_devices(slot->bridge->pci_bus);
+	dev = pci_find_slot(slot->bridge->bus, PCI_DEVFN(slot->device, 0));
 
 	if (!dev) {
 		err("No new device found\n");

Re: [PATCH] PCI hotplug changes for 2.5.69

[Greg KH]

ChangeSet 1.1082, 2003/05/06 15:35:23-07:00, greg@kroah.com

[PATCH] PCI Hotplug: fix up the ibm driver to work properly again.


 drivers/hotplug/ibmphp_core.c |   12 +++++++-----
 1 files changed, 7 insertions(+), 5 deletions(-)


diff -Nru a/drivers/hotplug/ibmphp_core.c b/drivers/hotplug/ibmphp_core.c
--- a/drivers/hotplug/ibmphp_core.c	Tue May  6 15:55:58 2003
+++ b/drivers/hotplug/ibmphp_core.c	Tue May  6 15:55:58 2003
@@ -846,22 +846,24 @@
 {
 	unsigned char bus;
 	struct pci_bus *child;
-	int rc = 0;
+	int num;
 	int flag = 0;	/* this is to make sure we don't double scan the bus, for bridged devices primarily */
 
 	if (!(bus_structure_fixup (func->busno)))
 		flag = 1;
 	if (func->dev == NULL)
-		func->dev = pci_find_slot (func->busno, (func->device << 3) | (func->function & 0x7));
+		func->dev = pci_find_slot (func->busno, PCI_DEVFN(func->device, func->function));
 
 	if (func->dev == NULL) {
 		struct pci_bus *bus = ibmphp_find_bus (func->busno);
 		if (!bus)
 			return 0;
 
-		func->dev = pci_scan_slot(bus,
-				 (func->device << 3) + (func->function & 0x7));
+		num = pci_scan_slot(bus, PCI_DEVFN(func->device, func->function));
+		if (num)
+			pci_bus_add_devices(bus);
 
+		func->dev = pci_find_slot(func->busno, PCI_DEVFN(func->device, func->function));
 		if (func->dev == NULL) {
 			err ("ERROR... : pci_dev still NULL \n");
 			return 0;
@@ -873,7 +875,7 @@
 		pci_do_scan_bus (child);
 	}
 
-	return rc;
+	return 0;
 }
 
 /*******************************************************

Re: [PATCH] PCI hotplug changes for 2.5.69

[Greg KH]

ChangeSet 1.1083, 2003/05/06 15:35:34-07:00, greg@kroah.com

[PATCH] PCI Hotplug: fix compiler warning in ibm driver.


 drivers/hotplug/ibmphp_core.c |    2 +-
 1 files changed, 1 insertion(+), 1 deletion(-)


diff -Nru a/drivers/hotplug/ibmphp_core.c b/drivers/hotplug/ibmphp_core.c
--- a/drivers/hotplug/ibmphp_core.c	Tue May  6 15:55:54 2003
+++ b/drivers/hotplug/ibmphp_core.c	Tue May  6 15:55:54 2003
@@ -1417,7 +1417,7 @@
 
 	/* lock ourselves into memory with a module 
 	 * count of -1 so that no one can unload us. */
-	MOD_DEC_USE_COUNT;
+	module_put(THIS_MODULE);
 
 exit:
 	return rc;

Re: [PATCH] PCI hotplug changes for 2.5.69

[Greg KH]

ChangeSet 1.1081, 2003/05/06 15:34:00-07:00, greg@kroah.com

[PATCH] PCI Hotplug: fix up the compaq driver to work properly again.


 drivers/hotplug/cpqphp_pci.c |   16 ++++++++--------
 1 files changed, 8 insertions(+), 8 deletions(-)


diff -Nru a/drivers/hotplug/cpqphp_pci.c b/drivers/hotplug/cpqphp_pci.c
--- a/drivers/hotplug/cpqphp_pci.c	Tue May  6 15:56:03 2003
+++ b/drivers/hotplug/cpqphp_pci.c	Tue May  6 15:56:03 2003
@@ -85,19 +85,20 @@
 {
 	unsigned char bus;
 	struct pci_bus *child;
-	int rc = 0;
+	int num;
 
 	if (func->pci_dev == NULL)
-		func->pci_dev = pci_find_slot(func->bus, (func->device << 3) | (func->function & 0x7));
+		func->pci_dev = pci_find_slot(func->bus, PCI_DEVFN(func->device, func->function));
 
-	//Still NULL ? Well then scan for it !
+	/* No pci device, we need to create it then */
 	if (func->pci_dev == NULL) {
 		dbg("INFO: pci_dev still null\n");
 
-		//this will generate pci_dev structures for all functions, but we will only call this case when lookup fails
-		func->pci_dev = pci_scan_slot(ctrl->pci_dev->bus,
-				 (func->device << 3) + (func->function & 0x7));
+		num = pci_scan_slot(ctrl->pci_dev->bus, PCI_DEVFN(func->device, func->function));
+		if (num)
+			pci_bus_add_devices(ctrl->pci_dev->bus);
 
+		func->pci_dev = pci_find_slot(func->bus, PCI_DEVFN(func->device, func->function));
 		if (func->pci_dev == NULL) {
 			dbg("ERROR: pci_dev still null\n");
 			return 0;
@@ -108,10 +109,9 @@
 		pci_read_config_byte(func->pci_dev, PCI_SECONDARY_BUS, &bus);
 		child = (struct pci_bus*) pci_add_new_bus(func->pci_dev->bus, (func->pci_dev), bus);
 		pci_do_scan_bus(child);
-
 	}
 
-	return rc;
+	return 0;
 }
 
 

Re: [PATCH] PCI hotplug changes for 2.5.69

[Greg KH]

ChangeSet 1.889.392.2, 2003/03/19 14:39:42-08:00, hannal@us.ibm.com

[PATCH] patch: remove unnecessary proc stuff from controller struct


 drivers/hotplug/cpqphp.h |    4 ----
 1 files changed, 4 deletions(-)


diff -Nru a/drivers/hotplug/cpqphp.h b/drivers/hotplug/cpqphp.h
--- a/drivers/hotplug/cpqphp.h	Tue May  6 15:56:15 2003
+++ b/drivers/hotplug/cpqphp.h	Tue May  6 15:56:15 2003
@@ -299,8 +299,6 @@
 	struct pci_resource *bus_head;
 	struct pci_dev *pci_dev;
 	struct pci_bus *pci_bus;
-	struct proc_dir_entry* proc_entry;
-	struct proc_dir_entry* proc_entry2;
 	struct event_info event_queue[10];
 	struct slot *slot;
 	u8 next_event;
@@ -322,8 +320,6 @@
 	u8 pcix_speed_capability;	/* PCI-X */
 	u8 pcix_support;		/* PCI-X */
 	u16 vendor_id;
-	char proc_name[20];
-	char proc_name2[20];
 	struct work_struct int_task_event;
 	wait_queue_head_t queue;	/* sleep & wake process */
 };

Re: [PATCH] PCI hotplug changes for 2.5.69

[Greg KH]

ChangeSet 1.889.392.3, 2003/03/19 15:45:39-08:00, rusty@linux.co.intel.com

[PATCH] PCI Hotplug: kernel-api docbook fix for now non-existant PCI hotplug

Here is a trivial documentation fix for some of recent PCI hotplug changes
that enables 'make htmldocs' to complete.


 Documentation/DocBook/kernel-api.tmpl |    1 -
 1 files changed, 1 deletion(-)


diff -Nru a/Documentation/DocBook/kernel-api.tmpl b/Documentation/DocBook/kernel-api.tmpl
--- a/Documentation/DocBook/kernel-api.tmpl	Tue May  6 15:56:11 2003
+++ b/Documentation/DocBook/kernel-api.tmpl	Tue May  6 15:56:11 2003
@@ -173,7 +173,6 @@
      </sect1>
      <sect1><title>PCI Hotplug Support Library</title>
 !Edrivers/hotplug/pci_hotplug_core.c
-!Edrivers/hotplug/pci_hotplug_util.c
      </sect1>
      <sect1><title>MCA Architecture</title>
 	<sect2><title>MCA Device Functions</title>

[PATCH] PCI hotplug changes for 2.5.69

[Greg KH]

ChangeSet 1.889.392.1, 2003/03/19 13:30:05-08:00, torben.mathiasen@hp.com

[PATCH] PCI Hotplug: cpqphp 66/100/133MHz PCI-X support

After being put on hold for a while (needed fixes to CCISS driver, etc) I
attached a patch that adds pci-x support to the cpqphp driver in 2.5.65.

Changes:
	Adds 66/100/133MHz PCI-X support.
	Adds support for dynamically chaning frequency and mode.
	Changes code to also blink the power LED when powering down.
	Uses the IRQ from PCI config space if the ROM resource table doesn't
	provide one (would previously use the same interrupt as the hotplug
	controller which would lead to bad things when trying to update routing
	tables). Dan Zink should have the credit for this fix.
	Changes find_slot() to cpqhp_find_slot().
	Uses sysfs to display speed/freq.
	Some documentation updates.


 drivers/hotplug/cpqphp.h      |  203 ++++++++++++++++++++++++++++++++++++++++--
 drivers/hotplug/cpqphp_core.c |   57 ++++++++++-
 drivers/hotplug/cpqphp_ctrl.c |  148 ++++++++++++++++--------------
 drivers/hotplug/cpqphp_pci.c  |    5 -
 4 files changed, 334 insertions(+), 79 deletions(-)


diff -Nru a/drivers/hotplug/cpqphp.h b/drivers/hotplug/cpqphp.h
--- a/drivers/hotplug/cpqphp.h	Tue May  6 15:56:19 2003
+++ b/drivers/hotplug/cpqphp.h	Tue May  6 15:56:19 2003
@@ -30,7 +30,7 @@
 
 #include "pci_hotplug.h"
 #include <asm/io.h>		/* for read? and write? functions */
-
+#include <linux/delay.h>	/* for delays */
 
 #if !defined(CONFIG_HOTPLUG_PCI_COMPAQ_MODULE)
 	#define MY_NAME	"cpqphp.o"
@@ -145,6 +145,10 @@
 	u8	reserved11;		/* 0x2b */
 	u8	slot_SERR;		/* 0x2c */
 	u8	slot_power;		/* 0x2d */
+	u8	reserved12;		/* 0x2e */
+	u8	reserved13;		/* 0x2f */
+	u8	next_curr_freq;		/* 0x30 */
+	u8	reset_freq_mode;	/* 0x31 */
 } __attribute__ ((packed));
 
 /* offsets to the controller registers based on the above structure layout */
@@ -172,6 +176,8 @@
 	CTRL_RESERVED11 =	offsetof(struct ctrl_reg, reserved11),
 	SLOT_SERR =		offsetof(struct ctrl_reg, slot_SERR),
 	SLOT_POWER =		offsetof(struct ctrl_reg, slot_power),
+	NEXT_CURR_FREQ =	offsetof(struct ctrl_reg, next_curr_freq),
+	RESET_FREQ_MODE =	offsetof(struct ctrl_reg, reset_freq_mode),
 };
 
 struct hrt {
@@ -299,6 +305,7 @@
 	struct slot *slot;
 	u8 next_event;
 	u8 interrupt;
+	u8 cfgspc_irq;
 	u8 bus;				/* bus number for the pci hotplug controller */
 	u8 rev;
 	u8 slot_device_offset;
@@ -343,6 +350,7 @@
 #define PCI_SUB_HPC_ID2			0xA2F8
 #define PCI_SUB_HPC_ID3			0xA2F9
 #define PCI_SUB_HPC_ID_INTC		0xA2FA
+#define PCI_SUB_HPC_ID4			0xA2FD
 
 #define INT_BUTTON_IGNORE		0
 #define INT_PRESENCE_ON			1
@@ -435,7 +443,7 @@
 extern void	cpqhp_destroy_resource_list	(struct resource_lists * resources);
 extern int	cpqhp_configure_device		(struct controller* ctrl, struct pci_func* func);
 extern int	cpqhp_unconfigure_device	(struct pci_func* func);
-
+extern struct slot *cpqhp_find_slot		(struct controller *ctrl, u8 device);
 
 /* Global variables */
 extern int cpqhp_debug;
@@ -563,6 +571,7 @@
 	u32 led_control;
 	
 	led_control = readl(ctrl->hpc_reg + LED_CONTROL);
+	led_control &= ~(0x0101L << slot);
 	led_control |= (0x0001L << slot);
 	writel(led_control, ctrl->hpc_reg + LED_CONTROL);
 }
@@ -604,14 +613,63 @@
 }
 
 
+/*
+ * get_controller_speed - find the current frequency/mode of controller.
+ *
+ * @ctrl: controller to get frequency/mode for.
+ *
+ * Returns controller speed.
+ *
+ */
 static inline u8 get_controller_speed (struct controller *ctrl)
 {
-	u16 misc;
-	
-	misc = readw(ctrl->hpc_reg + MISC);
-	return (misc & 0x0800) ? PCI_SPEED_66MHz : PCI_SPEED_33MHz;
+	u8 curr_freq;
+ 	u16 misc;
+ 	
+	if (ctrl->pcix_support) {
+		curr_freq = readb(ctrl->hpc_reg + NEXT_CURR_FREQ);
+		if ((curr_freq & 0xB0) == 0xB0) 
+			return PCI_SPEED_133MHz_PCIX;
+		if ((curr_freq & 0xA0) == 0xA0)
+			return PCI_SPEED_100MHz_PCIX;
+		if ((curr_freq & 0x90) == 0x90)
+			return PCI_SPEED_66MHz_PCIX;
+		if (curr_freq & 0x10)
+			return PCI_SPEED_66MHz;
+
+		return PCI_SPEED_33MHz;
+	}
+
+ 	misc = readw(ctrl->hpc_reg + MISC);
+ 	return (misc & 0x0800) ? PCI_SPEED_66MHz : PCI_SPEED_33MHz;
 }
+ 
+
+/*
+ * get_adapter_speed - find the max supported frequency/mode of adapter.
+ *
+ * @ctrl: hotplug controller.
+ * @hp_slot: hotplug slot where adapter is installed.
+ *
+ * Returns adapter speed.
+ *
+ */
+static inline u8 get_adapter_speed (struct controller *ctrl, u8 hp_slot)
+{
+	u32 temp_dword = readl(ctrl->hpc_reg + NON_INT_INPUT);
+	dbg("slot: %d, PCIXCAP: %8x\n", hp_slot, temp_dword);
+	if (ctrl->pcix_support) {
+		if (temp_dword & (0x10000 << hp_slot))
+			return PCI_SPEED_133MHz_PCIX;
+		if (temp_dword & (0x100 << hp_slot))
+			return PCI_SPEED_66MHz_PCIX;
+	}
 
+	if (temp_dword & (0x01 << hp_slot))
+		return PCI_SPEED_66MHz;
+
+	return PCI_SPEED_33MHz;
+}
 
 static inline void enable_slot_power (struct controller *ctrl, u8 slot)
 {
@@ -718,6 +776,139 @@
 
 	dbg("%s - end\n", __FUNCTION__);
 	return retval;
+}
+
+
+/**
+ * set_controller_speed - set the frequency and/or mode of a specific
+ * controller segment.
+ *
+ * @ctrl: controller to change frequency/mode for.
+ * @adapter_speed: the speed of the adapter we want to match.
+ * @hp_slot: the slot number where the adapter is installed.
+ *
+ * Returns 0 if we successfully change frequency and/or mode to match the
+ * adapter speed.
+ * 
+ */
+static inline u8 set_controller_speed(struct controller *ctrl, u8 adapter_speed, u8 hp_slot)
+{
+	struct slot *slot;
+	u8 reg;
+	u8 slot_power = readb(ctrl->hpc_reg + SLOT_POWER);
+	u16 reg16;
+	u32 leds = readl(ctrl->hpc_reg + LED_CONTROL);
+	
+	if (ctrl->speed == adapter_speed)
+		return 0;
+	
+	/* We don't allow freq/mode changes if we find another adapter running
+	 * in another slot on this controller */
+	for(slot = ctrl->slot; slot; slot = slot->next) {
+		if (slot->device == (hp_slot + ctrl->slot_device_offset)) 
+			continue;
+		if (!slot->hotplug_slot && !slot->hotplug_slot->info) 
+			continue;
+		if (slot->hotplug_slot->info->adapter_status == 0) 
+			continue;
+		/* If another adapter is running on the same segment but at a
+		 * lower speed/mode, we allow the new adapter to function at
+		 * this rate if supported */
+		if (ctrl->speed < adapter_speed) 
+			return 0;
+
+		return 1;
+	}
+	
+	/* If the controller doesn't support freq/mode changes and the
+	 * controller is running at a higher mode, we bail */
+	if ((ctrl->speed > adapter_speed) && (!ctrl->pcix_speed_capability))
+		return 1;
+	
+	/* But we allow the adapter to run at a lower rate if possible */
+	if ((ctrl->speed < adapter_speed) && (!ctrl->pcix_speed_capability))
+		return 0;
+
+	/* We try to set the max speed supported by both the adapter and
+	 * controller */
+	if (ctrl->speed_capability < adapter_speed) {
+		if (ctrl->speed == ctrl->speed_capability)
+			return 0;
+		adapter_speed = ctrl->speed_capability;
+	}
+
+	writel(0x0L, ctrl->hpc_reg + LED_CONTROL);
+	writeb(0x00, ctrl->hpc_reg + SLOT_ENABLE);
+	
+	set_SOGO(ctrl); 
+	wait_for_ctrl_irq(ctrl);
+	
+	if (adapter_speed != PCI_SPEED_133MHz_PCIX)
+		reg = 0xF5;
+	else
+		reg = 0xF4;	
+	pci_write_config_byte(ctrl->pci_dev, 0x41, reg);
+	
+	reg16 = readw(ctrl->hpc_reg + NEXT_CURR_FREQ);
+	reg16 &= ~0x000F;
+	switch(adapter_speed) {
+		case(PCI_SPEED_133MHz_PCIX): 
+			reg = 0x75;
+			reg16 |= 0xB; 
+			break;
+		case(PCI_SPEED_100MHz_PCIX):
+			reg = 0x74;
+			reg16 |= 0xA;
+			break;
+		case(PCI_SPEED_66MHz_PCIX):
+			reg = 0x73;
+			reg16 |= 0x9;
+			break;
+		case(PCI_SPEED_66MHz):
+			reg = 0x73;
+			reg16 |= 0x1;
+			break;
+		default: /* 33MHz PCI 2.2 */
+			reg = 0x71;
+			break;
+			
+	}
+	reg16 |= 0xB << 12;
+	writew(reg16, ctrl->hpc_reg + NEXT_CURR_FREQ);
+	
+	mdelay(5); 
+	
+	/* Reenable interrupts */
+	writel(0, ctrl->hpc_reg + INT_MASK);
+
+	pci_write_config_byte(ctrl->pci_dev, 0x41, reg); 
+	
+	/* Restart state machine */
+	reg = ~0xF;
+	pci_read_config_byte(ctrl->pci_dev, 0x43, &reg);
+	pci_write_config_byte(ctrl->pci_dev, 0x43, reg);
+	
+	/* Only if mode change...*/
+	if (((ctrl->speed == PCI_SPEED_66MHz) && (adapter_speed == PCI_SPEED_66MHz_PCIX)) ||
+		((ctrl->speed == PCI_SPEED_66MHz_PCIX) && (adapter_speed == PCI_SPEED_66MHz))) 
+			set_SOGO(ctrl);
+	
+	wait_for_ctrl_irq(ctrl);
+	mdelay(1100);
+	
+	/* Restore LED/Slot state */
+	writel(leds, ctrl->hpc_reg + LED_CONTROL);
+	writeb(slot_power, ctrl->hpc_reg + SLOT_ENABLE);
+	
+	set_SOGO(ctrl);
+	wait_for_ctrl_irq(ctrl);
+
+	ctrl->speed = adapter_speed;
+	slot = cpqhp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset);
+
+	info("Successfully changed frequency/mode for adapter in slot %d\n", 
+			slot->number);
+	return 0;
 }
 
 #endif
diff -Nru a/drivers/hotplug/cpqphp_core.c b/drivers/hotplug/cpqphp_core.c
--- a/drivers/hotplug/cpqphp_core.c	Tue May  6 15:56:19 2003
+++ b/drivers/hotplug/cpqphp_core.c	Tue May  6 15:56:19 2003
@@ -24,6 +24,9 @@
  *
  * Send feedback to <greg@kroah.com>
  *
+ * Jan 12, 2003 -	Added 66/100/133MHz PCI-X support,
+ * 			Torben Mathiasen <torben.mathiasen@hp.com>
+ *
  */
 
 #include <linux/config.h>
@@ -57,7 +60,7 @@
 static u8 power_mode;
 static int debug;
 
-#define DRIVER_VERSION	"0.9.6"
+#define DRIVER_VERSION	"0.9.7"
 #define DRIVER_AUTHOR	"Dan Zink <dan.zink@compaq.com>, Greg Kroah-Hartman <greg@kroah.com>"
 #define DRIVER_DESC	"Compaq Hot Plug PCI Controller Driver"
 
@@ -835,6 +838,7 @@
 	u8 hp_slot = 0;
 	u8 device;
 	u8 rev;
+	u8 bus_cap;
 	u16 temp_word;
 	u16 vendor_id;
 	u16 subsystem_vid;
@@ -896,6 +900,39 @@
 
 		switch (subsystem_vid) {
 			case PCI_VENDOR_ID_COMPAQ:
+				if (rev >= 0x13) { /* CIOBX */
+					ctrl->push_flag = 1;
+					ctrl->slot_switch_type = 1;		// Switch is present
+					ctrl->push_button = 1;			// Pushbutton is present
+					ctrl->pci_config_space = 1;		// Index/data access to working registers 0 = not supported, 1 = supported
+					ctrl->defeature_PHP = 1;		// PHP is supported
+					ctrl->pcix_support = 1;			// PCI-X supported
+					ctrl->pcix_speed_capability = 1;
+					pci_read_config_byte(pdev, 0x41, &bus_cap);
+					if (bus_cap & 0x80) {
+						dbg("bus max supports 133MHz PCI-X\n");
+						ctrl->speed_capability = PCI_SPEED_133MHz_PCIX;
+						break;
+					}
+					if (bus_cap & 0x40) {
+						dbg("bus max supports 100MHz PCI-X\n");
+						ctrl->speed_capability = PCI_SPEED_100MHz_PCIX;
+						break;
+					}
+					if (bus_cap & 20) {
+						dbg("bus max supports 66MHz PCI-X\n");
+						ctrl->speed_capability = PCI_SPEED_66MHz_PCIX;
+						break;
+					}
+					if (bus_cap & 10) {
+						dbg("bus max supports 66MHz PCI\n");
+						ctrl->speed_capability = PCI_SPEED_66MHz;
+						break;
+					}
+
+					break;
+				}
+
 				switch (subsystem_deviceid) {
 					case PCI_SUB_HPC_ID:
 						/* Original 6500/7000 implementation */
@@ -939,8 +976,18 @@
 						ctrl->pcix_support = 0;			// PCI-X not supported
 						ctrl->pcix_speed_capability = 0;	// N/A since PCI-X not supported
 						break;
+					case PCI_SUB_HPC_ID4:
+						/* First PCI-X implementation, 100MHz */
+						ctrl->push_flag = 1;
+						ctrl->slot_switch_type = 1;		// Switch is present
+						ctrl->speed_capability = PCI_SPEED_100MHz_PCIX;
+						ctrl->push_button = 1;			// Pushbutton is present
+						ctrl->pci_config_space = 1;		// Index/data access to working registers 0 = not supported, 1 = supported
+						ctrl->defeature_PHP = 1;		// PHP is supported
+						ctrl->pcix_support = 1;			// PCI-X supported
+						ctrl->pcix_speed_capability = 0;	
+						break;
 					default:
-						// TODO: Add SSIDs for CPQ systems that support PCI-X
 						err(msg_HPC_not_supported);
 						rc = -ENODEV;
 						goto err_free_ctrl;
@@ -1029,7 +1076,7 @@
 	info("Initializing the PCI hot plug controller residing on PCI bus %d\n", pdev->bus->number);
 
 	dbg ("Hotplug controller capabilities:\n");
-	dbg ("    speed_capability       %s\n", ctrl->speed_capability == PCI_SPEED_33MHz ? "33MHz" : "66Mhz");
+	dbg ("    speed_capability       %d\n", ctrl->speed_capability);
 	dbg ("    slot_switch_type       %s\n", ctrl->slot_switch_type == 0 ? "no switch" : "switch present");
 	dbg ("    defeature_PHP          %s\n", ctrl->defeature_PHP == 0 ? "PHP not supported" : "PHP supported");
 	dbg ("    alternate_base_address %s\n", ctrl->alternate_base_address == 0 ? "not supported" : "supported");
@@ -1082,7 +1129,6 @@
 	}
 
 	// Check for 66Mhz operation
-	// TODO: Add PCI-X support
 	ctrl->speed = get_controller_speed(ctrl);
 
 
@@ -1118,6 +1164,9 @@
 	 */
 	// The next line is required for cpqhp_find_available_resources
 	ctrl->interrupt = pdev->irq;
+
+	ctrl->cfgspc_irq = 0;
+	pci_read_config_byte(pdev, PCI_INTERRUPT_LINE, &ctrl->cfgspc_irq);
 
 	rc = cpqhp_find_available_resources(ctrl, cpqhp_rom_start);
 	ctrl->add_support = !rc;
diff -Nru a/drivers/hotplug/cpqphp_ctrl.c b/drivers/hotplug/cpqphp_ctrl.c
--- a/drivers/hotplug/cpqphp_ctrl.c	Tue May  6 15:56:19 2003
+++ b/drivers/hotplug/cpqphp_ctrl.c	Tue May  6 15:56:19 2003
@@ -136,9 +136,9 @@
 
 
 /*
- * find_slot
+ * cpqhp_find_slot
  */
-static inline struct slot *find_slot (struct controller * ctrl, u8 device)
+struct slot *cpqhp_find_slot (struct controller * ctrl, u8 device)
 {
 	struct slot *slot;
 
@@ -187,7 +187,7 @@
 
 			rc++;
 
-			p_slot = find_slot(ctrl, hp_slot + (readb(ctrl->hpc_reg + SLOT_MASK) >> 4));
+			p_slot = cpqhp_find_slot(ctrl, hp_slot + (readb(ctrl->hpc_reg + SLOT_MASK) >> 4));
 			if (!p_slot)
 				return 0;
 
@@ -919,6 +919,7 @@
 void cpqhp_ctrl_intr(int IRQ, struct controller * ctrl, struct pt_regs *regs)
 {
 	u8 schedule_flag = 0;
+	u8 reset;
 	u16 misc;
 	u32 Diff;
 	u32 temp_dword;
@@ -970,6 +971,15 @@
 		schedule_flag += handle_power_fault((u8)((Diff & 0xFF00L) >> 8), ctrl);
 	}
 
+	reset = readb(ctrl->hpc_reg + RESET_FREQ_MODE);
+	if (reset & 0x40) {
+		/* Bus reset has completed */
+		reset &= 0xCF;
+		writeb(reset, ctrl->hpc_reg + RESET_FREQ_MODE);
+		reset = readb(ctrl->hpc_reg + RESET_FREQ_MODE);
+		wake_up_interruptible(&ctrl->queue);
+	}
+
 	if (schedule_flag) {
 		up(&event_semaphore);
 		dbg("Signal event_semaphore\n");
@@ -1171,6 +1181,7 @@
 {
 	u8 hp_slot;
 	u8 temp_byte;
+	u8 adapter_speed;
 	u32 index;
 	u32 rc = 0;
 	u32 src = 8;
@@ -1188,46 +1199,46 @@
 		//*********************************
 		rc = CARD_FUNCTIONING;
 	} else {
-		if (ctrl->speed == PCI_SPEED_66MHz) {
-			// Wait for exclusive access to hardware
-			down(&ctrl->crit_sect);
-
-			// turn on board without attaching to the bus
-			enable_slot_power (ctrl, hp_slot);
+		// Wait for exclusive access to hardware
+		down(&ctrl->crit_sect);
 
-			set_SOGO(ctrl);
+		// turn on board without attaching to the bus
+		enable_slot_power (ctrl, hp_slot);
 
-			// Wait for SOBS to be unset
-			wait_for_ctrl_irq (ctrl);
+		set_SOGO(ctrl);
 
-			// Change bits in slot power register to force another shift out
-			// NOTE: this is to work around the timer bug
-			temp_byte = readb(ctrl->hpc_reg + SLOT_POWER);
-			writeb(0x00, ctrl->hpc_reg + SLOT_POWER);
-			writeb(temp_byte, ctrl->hpc_reg + SLOT_POWER);
+		// Wait for SOBS to be unset
+		wait_for_ctrl_irq (ctrl);
 
-			set_SOGO(ctrl);
+		// Change bits in slot power register to force another shift out
+		// NOTE: this is to work around the timer bug
+		temp_byte = readb(ctrl->hpc_reg + SLOT_POWER);
+		writeb(0x00, ctrl->hpc_reg + SLOT_POWER);
+		writeb(temp_byte, ctrl->hpc_reg + SLOT_POWER);
 
-			// Wait for SOBS to be unset
-			wait_for_ctrl_irq (ctrl);
+		set_SOGO(ctrl);
 
-			if (!(readl(ctrl->hpc_reg + NON_INT_INPUT) & (0x01 << hp_slot))) {
+		// Wait for SOBS to be unset
+		wait_for_ctrl_irq (ctrl);
+		
+		adapter_speed = get_adapter_speed(ctrl, hp_slot);
+		if (ctrl->speed != adapter_speed)
+			if (set_controller_speed(ctrl, adapter_speed, hp_slot))
 				rc = WRONG_BUS_FREQUENCY;
-			}
-			// turn off board without attaching to the bus
-			disable_slot_power (ctrl, hp_slot);
 
-			set_SOGO(ctrl);
+		// turn off board without attaching to the bus
+		disable_slot_power (ctrl, hp_slot);
 
-			// Wait for SOBS to be unset
-			wait_for_ctrl_irq (ctrl);
+		set_SOGO(ctrl);
 
-			// Done with exclusive hardware access
-			up(&ctrl->crit_sect);
+		// Wait for SOBS to be unset
+		wait_for_ctrl_irq (ctrl);
 
-			if (rc)
-				return(rc);
-		}
+		// Done with exclusive hardware access
+		up(&ctrl->crit_sect);
+
+		if (rc)
+			return(rc);
 
 		// Wait for exclusive access to hardware
 		down(&ctrl->crit_sect);
@@ -1375,6 +1386,7 @@
 {
 	u8 hp_slot;
 	u8 temp_byte;
+	u8 adapter_speed;
 	int index;
 	u32 temp_register = 0xFFFFFFFF;
 	u32 rc = 0;
@@ -1386,47 +1398,48 @@
 	dbg("%s: func->device, slot_offset, hp_slot = %d, %d ,%d\n",
 	    __FUNCTION__, func->device, ctrl->slot_device_offset, hp_slot);
 
-	if (ctrl->speed == PCI_SPEED_66MHz) {
-		// Wait for exclusive access to hardware
-		down(&ctrl->crit_sect);
-
-		// turn on board without attaching to the bus
-		enable_slot_power (ctrl, hp_slot);
+	// Wait for exclusive access to hardware
+	down(&ctrl->crit_sect);
 
-		set_SOGO(ctrl);
+	// turn on board without attaching to the bus
+	enable_slot_power (ctrl, hp_slot);
 
-		// Wait for SOBS to be unset
-		wait_for_ctrl_irq (ctrl);
+	set_SOGO(ctrl);
 
-		// Change bits in slot power register to force another shift out
-		// NOTE: this is to work around the timer bug
-		temp_byte = readb(ctrl->hpc_reg + SLOT_POWER);
-		writeb(0x00, ctrl->hpc_reg + SLOT_POWER);
-		writeb(temp_byte, ctrl->hpc_reg + SLOT_POWER);
+	// Wait for SOBS to be unset
+	wait_for_ctrl_irq (ctrl);
 
-		set_SOGO(ctrl);
+	// Change bits in slot power register to force another shift out
+	// NOTE: this is to work around the timer bug
+	temp_byte = readb(ctrl->hpc_reg + SLOT_POWER);
+	writeb(0x00, ctrl->hpc_reg + SLOT_POWER);
+	writeb(temp_byte, ctrl->hpc_reg + SLOT_POWER);
 
-		// Wait for SOBS to be unset
-		wait_for_ctrl_irq (ctrl);
+	set_SOGO(ctrl);
 
-		if (!(readl(ctrl->hpc_reg + NON_INT_INPUT) & (0x01 << hp_slot))) {
+	// Wait for SOBS to be unset
+	wait_for_ctrl_irq (ctrl);
+	
+	adapter_speed = get_adapter_speed(ctrl, hp_slot);
+	if (ctrl->speed != adapter_speed)
+		if (set_controller_speed(ctrl, adapter_speed, hp_slot))
 			rc = WRONG_BUS_FREQUENCY;
-		}
-		// turn off board without attaching to the bus
-		disable_slot_power (ctrl, hp_slot);
+	
+	// turn off board without attaching to the bus
+	disable_slot_power (ctrl, hp_slot);
 
-		set_SOGO(ctrl);
+	set_SOGO(ctrl);
 
-		// Wait for SOBS to be unset
-		wait_for_ctrl_irq (ctrl);
+	// Wait for SOBS to be unset
+	wait_for_ctrl_irq (ctrl);
 
-		// Done with exclusive hardware access
-		up(&ctrl->crit_sect);
+	// Done with exclusive hardware access
+	up(&ctrl->crit_sect);
 
-		if (rc)
-			return(rc);
-	}
-	p_slot = find_slot(ctrl, hp_slot + ctrl->slot_device_offset);
+	if (rc)
+		return(rc);
+	
+	p_slot = cpqhp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset);
 
 	// turn on board and blink green LED
 
@@ -1799,7 +1812,7 @@
 				if (!func)
 					return;
 
-				p_slot = find_slot(ctrl, hp_slot + ctrl->slot_device_offset);
+				p_slot = cpqhp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset);
 				if (!p_slot)
 					return;
 
@@ -1859,11 +1872,12 @@
 					}
 					// Wait for exclusive access to hardware
 					down(&ctrl->crit_sect);
-
+					
 					dbg("blink green LED and turn off amber\n");
+					
 					amber_LED_off (ctrl, hp_slot);
 					green_LED_blink (ctrl, hp_slot);
-
+					
 					set_SOGO(ctrl);
 
 					// Wait for SOBS to be unset
@@ -1991,7 +2005,7 @@
 
 	device = func->device;
 	hp_slot = device - ctrl->slot_device_offset;
-	p_slot = find_slot(ctrl, device);
+	p_slot = cpqhp_find_slot(ctrl, device);
 	if (p_slot) {
 		physical_slot = p_slot->number;
 	}
@@ -2090,7 +2104,7 @@
 
 	device = func->device; 
 	func = cpqhp_slot_find(ctrl->bus, device, index++);
-	p_slot = find_slot(ctrl, device);
+	p_slot = cpqhp_find_slot(ctrl, device);
 	if (p_slot) {
 		physical_slot = p_slot->number;
 	}
diff -Nru a/drivers/hotplug/cpqphp_pci.c b/drivers/hotplug/cpqphp_pci.c
--- a/drivers/hotplug/cpqphp_pci.c	Tue May  6 15:56:19 2003
+++ b/drivers/hotplug/cpqphp_pci.c	Tue May  6 15:56:19 2003
@@ -97,6 +97,7 @@
 		//this will generate pci_dev structures for all functions, but we will only call this case when lookup fails
 		func->pci_dev = pci_scan_slot(ctrl->pci_dev->bus,
 				 (func->device << 3) + (func->function & 0x7));
+
 		if (func->pci_dev == NULL) {
 			dbg("ERROR: pci_dev still null\n");
 			return 0;
@@ -1209,11 +1210,11 @@
 	temp = 0;
 
 	if (!cpqhp_nic_irq) {
-		cpqhp_nic_irq = ctrl->interrupt;
+		cpqhp_nic_irq = ctrl->cfgspc_irq;
 	}
 
 	if (!cpqhp_disk_irq) {
-		cpqhp_disk_irq = ctrl->interrupt;
+		cpqhp_disk_irq = ctrl->cfgspc_irq;
 	}
 
 	dbg("cpqhp_disk_irq, cpqhp_nic_irq= %d, %d\n", cpqhp_disk_irq, cpqhp_nic_irq);

Re: [PATCH] PCI hotplug changes for 2.5.69

[Greg KH]

ChangeSet 1.1086, 2003/05/06 15:51:03-07:00, greg@kroah.com

PCI Hotplug: export the acpi_resource_to_address64 function, as the acpi pci hotplug driver needs it.


 drivers/acpi/acpi_ksyms.c |    1 +
 1 files changed, 1 insertion(+)


diff -Nru a/drivers/acpi/acpi_ksyms.c b/drivers/acpi/acpi_ksyms.c
--- a/drivers/acpi/acpi_ksyms.c	Tue May  6 15:55:41 2003
+++ b/drivers/acpi/acpi_ksyms.c	Tue May  6 15:55:41 2003
@@ -80,6 +80,7 @@
 EXPORT_SYMBOL(acpi_get_possible_resources);
 EXPORT_SYMBOL(acpi_walk_resources);
 EXPORT_SYMBOL(acpi_set_current_resources);
+EXPORT_SYMBOL(acpi_resource_to_address64);
 EXPORT_SYMBOL(acpi_enable_event);
 EXPORT_SYMBOL(acpi_disable_event);
 EXPORT_SYMBOL(acpi_clear_event);