Re: [BK PATCH] PCI hotplug changes for 2.5.36

[Greg KH]

# This is a BitKeeper generated patch for the following project:
# Project Name: Linux kernel tree
# This patch format is intended for GNU patch command version 2.5 or higher.
# This patch includes the following deltas:
#	           ChangeSet	1.560   -> 1.561  
#	drivers/hotplug/cpqphp_core.c	1.8     -> 1.9    
#	drivers/hotplug/cpqphp.h	1.3     -> 1.4    
#	drivers/hotplug/cpqphp_ctrl.c	1.4     -> 1.5    
#
# The following is the BitKeeper ChangeSet Log
# --------------------------------------------
# 02/09/19	[e-mail]	1.561
# PCI Hotplug: added speed status to the Compaq driver.
# --------------------------------------------
#
diff -Nru a/drivers/hotplug/cpqphp.h b/drivers/hotplug/cpqphp.h
--- a/drivers/hotplug/cpqphp.h	Thu Sep 19 17:50:43 2002
+++ b/drivers/hotplug/cpqphp.h	Thu Sep 19 17:50:43 2002
@@ -305,8 +305,8 @@
 	u8 first_slot;
 	u8 add_support;
 	u8 push_flag;
-	u8 speed;			/* 0 = 33MHz, 1 = 66MHz */
-	u8 speed_capability;		/* 0 = 33MHz, 1 = 66MHz */
+	enum pci_bus_speed speed;
+	enum pci_bus_speed speed_capability;
 	u8 push_button;			/* 0 = no pushbutton, 1 = pushbutton present */
 	u8 slot_switch_type;		/* 0 = no switch, 1 = switch present */
 	u8 defeature_PHP;		/* 0 = PHP not supported, 1 = PHP supported */
@@ -321,9 +321,6 @@
 	wait_queue_head_t queue;	/* sleep & wake process */
 };
 
-#define CTRL_SPEED_33MHz	0
-#define CTRL_SPEED_66MHz	1
-
 struct irq_mapping {
 	u8 barber_pole;
 	u8 valid_INT;
@@ -635,7 +632,7 @@
 	u16 misc;
 	
 	misc = readw(ctrl->hpc_reg + MISC);
-	return (misc & 0x0800) ? 1 : 0;
+	return (misc & 0x0800) ? PCI_SPEED_66MHz : PCI_SPEED_33MHz;
 }
 
 
diff -Nru a/drivers/hotplug/cpqphp_core.c b/drivers/hotplug/cpqphp_core.c
--- a/drivers/hotplug/cpqphp_core.c	Thu Sep 19 17:50:43 2002
+++ b/drivers/hotplug/cpqphp_core.c	Thu Sep 19 17:50:43 2002
@@ -79,6 +79,8 @@
 static int get_attention_status	(struct hotplug_slot *slot, u8 *value);
 static int get_latch_status	(struct hotplug_slot *slot, u8 *value);
 static int get_adapter_status	(struct hotplug_slot *slot, u8 *value);
+static int get_max_bus_speed	(struct hotplug_slot *slot, enum pci_bus_speed *value);
+static int get_cur_bus_speed	(struct hotplug_slot *slot, enum pci_bus_speed *value);
 
 static struct hotplug_slot_ops cpqphp_hotplug_slot_ops = {
 	.owner =		THIS_MODULE,
@@ -90,6 +92,8 @@
 	.get_attention_status =	get_attention_status,
 	.get_latch_status =	get_latch_status,
 	.get_adapter_status =	get_adapter_status,
+  	.get_max_bus_speed =	get_max_bus_speed,
+  	.get_cur_bus_speed =	get_cur_bus_speed,
 };
 
 
@@ -378,7 +382,7 @@
 			new_slot->capabilities |= PCISLOT_64_BIT_SUPPORTED;
 		if (is_slot66mhz(new_slot))
 			new_slot->capabilities |= PCISLOT_66_MHZ_SUPPORTED;
-		if (ctrl->speed == 1)
+		if (ctrl->speed == PCI_SPEED_66MHz)
 			new_slot->capabilities |= PCISLOT_66_MHZ_OPERATION;
 
 		ctrl_slot = slot_device - (readb(ctrl->hpc_reg + SLOT_MASK) >> 4);
@@ -782,6 +786,44 @@
 	return 0;
 }
 
+static int get_max_bus_speed (struct hotplug_slot *hotplug_slot, enum pci_bus_speed *value)
+{
+	struct slot *slot = get_slot (hotplug_slot, __FUNCTION__);
+	struct controller *ctrl;
+	
+	if (slot == NULL)
+		return -ENODEV;
+
+	dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name);
+
+	ctrl = slot->ctrl;
+	if (ctrl == NULL)
+		return -ENODEV;
+	
+	*value = ctrl->speed_capability;
+
+	return 0;
+}
+
+static int get_cur_bus_speed (struct hotplug_slot *hotplug_slot, enum pci_bus_speed *value)
+{
+	struct slot *slot = get_slot (hotplug_slot, __FUNCTION__);
+	struct controller *ctrl;
+	
+	if (slot == NULL)
+		return -ENODEV;
+
+	dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name);
+
+	ctrl = slot->ctrl;
+	if (ctrl == NULL)
+		return -ENODEV;
+	
+	*value = ctrl->speed;
+
+	return 0;
+}
+
 static int cpqhpc_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 {
 	u8 num_of_slots = 0;
@@ -853,28 +895,28 @@
 					case PCI_SUB_HPC_ID:
 						/* Original 6500/7000 implementation */
 						ctrl->slot_switch_type = 1;		// Switch is present
-						ctrl->speed_capability = CTRL_SPEED_33MHz;
+						ctrl->speed_capability = PCI_SPEED_33MHz;
 						ctrl->push_button = 0;			// No pushbutton
 						ctrl->pci_config_space = 1;		// Index/data access to working registers 0 = not supported, 1 = supported
-						ctrl->defeature_PHP = 1;			// PHP is supported
+						ctrl->defeature_PHP = 1;		// PHP is supported
 						ctrl->pcix_support = 0;			// PCI-X not supported
-						ctrl->pcix_speed_capability = 0;		// N/A since PCI-X not supported
+						ctrl->pcix_speed_capability = 0;	// N/A since PCI-X not supported
 						break;
 					case PCI_SUB_HPC_ID2:
 						/* First Pushbutton implementation */
 						ctrl->push_flag = 1;
 						ctrl->slot_switch_type = 1;		// Switch is present
-						ctrl->speed_capability = CTRL_SPEED_33MHz;
+						ctrl->speed_capability = PCI_SPEED_33MHz;
 						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->defeature_PHP = 1;		// PHP is supported
 						ctrl->pcix_support = 0;			// PCI-X not supported
-						ctrl->pcix_speed_capability = 0;		// N/A since PCI-X not supported
+						ctrl->pcix_speed_capability = 0;	// N/A since PCI-X not supported
 						break;
 					case PCI_SUB_HPC_ID_INTC:
 						/* Third party (6500/7000) */
 						ctrl->slot_switch_type = 1;		// Switch is present
-						ctrl->speed_capability = CTRL_SPEED_33MHz;
+						ctrl->speed_capability = PCI_SPEED_33MHz;
 						ctrl->push_button = 0;			// No pushbutton
 						ctrl->pci_config_space = 1;		// Index/data access to working registers 0 = not supported, 1 = supported
 						ctrl->defeature_PHP = 1;			// PHP is supported
@@ -885,7 +927,7 @@
 						/* First 66 Mhz implementation */
 						ctrl->push_flag = 1;
 						ctrl->slot_switch_type = 1;		// Switch is present
-						ctrl->speed_capability = CTRL_SPEED_66MHz;
+						ctrl->speed_capability = PCI_SPEED_66MHz;
 						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
@@ -903,9 +945,9 @@
 			case PCI_VENDOR_ID_INTEL:
 				/* Check for speed capability (0=33, 1=66) */
 				if (subsystem_deviceid & 0x0001) {
-					ctrl->speed_capability = CTRL_SPEED_66MHz;
+					ctrl->speed_capability = PCI_SPEED_66MHz;
 				} else {
-					ctrl->speed_capability = CTRL_SPEED_33MHz;
+					ctrl->speed_capability = PCI_SPEED_33MHz;
 				}
 
 				/* Check for push button */
@@ -982,7 +1024,7 @@
 	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 == CTRL_SPEED_33MHz ? "33MHz" : "66Mhz");
+	dbg ("    speed_capability       %s\n", ctrl->speed_capability == PCI_SPEED_33MHz ? "33MHz" : "66Mhz");
 	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");
diff -Nru a/drivers/hotplug/cpqphp_ctrl.c b/drivers/hotplug/cpqphp_ctrl.c
--- a/drivers/hotplug/cpqphp_ctrl.c	Thu Sep 19 17:50:43 2002
+++ b/drivers/hotplug/cpqphp_ctrl.c	Thu Sep 19 17:50:43 2002
@@ -1187,7 +1187,7 @@
 		//*********************************
 		rc = CARD_FUNCTIONING;
 	} else {
-		if (ctrl->speed == 1) {
+		if (ctrl->speed == PCI_SPEED_66MHz) {
 			// Wait for exclusive access to hardware
 			down(&ctrl->crit_sect);
 
@@ -1385,7 +1385,7 @@
 	dbg("%s: func->device, slot_offset, hp_slot = %d, %d ,%d\n",
 	    __FUNCTION__, func->device, ctrl->slot_device_offset, hp_slot);
 
-	if (ctrl->speed == 1) {
+	if (ctrl->speed == PCI_SPEED_66MHz) {
 		// Wait for exclusive access to hardware
 		down(&ctrl->crit_sect);