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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6

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* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6: (21 commits)
  pciehp: fix error message about getting hotplug control
  pci/irq: let pci_device_shutdown to call pci_msi_shutdown v2
  pci/irq: restore mask_bits in msi shutdown -v3
  doc: replace yet another dev with pdev for consistency in DMA-mapping.txt
  PCI: don't expose struct pci_vpd to userspace
  doc: fix an incorrect suggestion to pass NULL for PCI like buses
  Consistently use pdev as the variable of type struct pci_dev *.
  pciehp: Fix command write
  shpchp: fix slot name
  make pciehp_acpi_get_hp_hw_control_from_firmware()
  pciehp: Clean up pcie_init()
  pciehp: Mask hotplug interrupt at controller release
  pciehp: Remove useless hotplug interrupt enabling
  pciehp: Fix wrong slot capability check
  pciehp: Fix wrong slot control register access
  pciehp: Add missing memory barrier
  pciehp: Fix interrupt event handlig
  pciehp: fix slot name
  Update MAINTAINERS with location of PCI tree
  PCI: Add Intel SCH PCI IDs
  ...
This commit is contained in:
Linus Torvalds
2008-04-29 10:17:59 -07:00
parent 8f45c1a58a a53edac131
commit a217656cb2
13 changed files with 306 additions and 472 deletions
Download Patch File Download Diff File Expand all files Collapse all files
drivers/pci/hotplug/pciehp.h
+8 -9
View File
@@ -93,11 +93,10 @@ struct controller {
u8 slot_device_offset;
u32 first_slot; /* First physical slot number */ /* PCIE only has 1 slot */
u8 slot_bus; /* Bus where the slots handled by this controller sit */
u8 ctrlcap;
u32 slot_cap;
u8 cap_base;
struct timer_list poll_timer;
volatile int cmd_busy;
spinlock_t lock;
};
#define INT_BUTTON_IGNORE 0
@@ -137,13 +136,13 @@ struct controller {
#define HP_SUPR_RM_SUP 0x00000020
#define EMI_PRSN 0x00020000
#define ATTN_BUTTN(cap) (cap & ATTN_BUTTN_PRSN)
#define POWER_CTRL(cap) (cap & PWR_CTRL_PRSN)
#define MRL_SENS(cap) (cap & MRL_SENS_PRSN)
#define ATTN_LED(cap) (cap & ATTN_LED_PRSN)
#define PWR_LED(cap) (cap & PWR_LED_PRSN)
#define HP_SUPR_RM(cap) (cap & HP_SUPR_RM_SUP)
#define EMI(cap) (cap & EMI_PRSN)
#define ATTN_BUTTN(ctrl) ((ctrl)->slot_cap & ATTN_BUTTN_PRSN)
#define POWER_CTRL(ctrl) ((ctrl)->slot_cap & PWR_CTRL_PRSN)
#define MRL_SENS(ctrl) ((ctrl)->slot_cap & MRL_SENS_PRSN)
#define ATTN_LED(ctrl) ((ctrl)->slot_cap & ATTN_LED_PRSN)
#define PWR_LED(ctrl) ((ctrl)->slot_cap & PWR_LED_PRSN)
#define HP_SUPR_RM(ctrl) ((ctrl)->slot_cap & HP_SUPR_RM_SUP)
#define EMI(ctrl) ((ctrl)->slot_cap & EMI_PRSN)
extern int pciehp_sysfs_enable_slot(struct slot *slot);
extern int pciehp_sysfs_disable_slot(struct slot *slot);
drivers/pci/hotplug/pciehp_core.c
+13 -6
View File
@@ -41,6 +41,7 @@ int pciehp_debug;
int pciehp_poll_mode;
int pciehp_poll_time;
int pciehp_force;
int pciehp_slot_with_bus;
struct workqueue_struct *pciehp_wq;
#define DRIVER_VERSION "0.4"
@@ -55,10 +56,12 @@ module_param(pciehp_debug, bool, 0644);
module_param(pciehp_poll_mode, bool, 0644);
module_param(pciehp_poll_time, int, 0644);
module_param(pciehp_force, bool, 0644);
module_param(pciehp_slot_with_bus, bool, 0644);
MODULE_PARM_DESC(pciehp_debug, "Debugging mode enabled or not");
MODULE_PARM_DESC(pciehp_poll_mode, "Using polling mechanism for hot-plug events or not");
MODULE_PARM_DESC(pciehp_poll_time, "Polling mechanism frequency, in seconds");
MODULE_PARM_DESC(pciehp_force, "Force pciehp, even if _OSC and OSHP are missing");
MODULE_PARM_DESC(pciehp_slot_with_bus, "Use bus number in the slot name");
#define PCIE_MODULE_NAME "pciehp"
@@ -193,8 +196,12 @@ static void release_slot(struct hotplug_slot *hotplug_slot)
static void make_slot_name(struct slot *slot)
{
snprintf(slot->hotplug_slot->name, SLOT_NAME_SIZE, "%04d_%04d",
slot->bus, slot->number);
if (pciehp_slot_with_bus)
snprintf(slot->hotplug_slot->name, SLOT_NAME_SIZE, "%04d_%04d",
slot->bus, slot->number);
else
snprintf(slot->hotplug_slot->name, SLOT_NAME_SIZE, "%d",
slot->number);
}
static int init_slots(struct controller *ctrl)
@@ -251,7 +258,7 @@ static int init_slots(struct controller *ctrl)
goto error_info;
}
/* create additional sysfs entries */
if (EMI(ctrl->ctrlcap)) {
if (EMI(ctrl)) {
retval = sysfs_create_file(&hotplug_slot->kobj,
&hotplug_slot_attr_lock.attr);
if (retval) {
@@ -284,7 +291,7 @@ static void cleanup_slots(struct controller *ctrl)
list_for_each_safe(tmp, next, &ctrl->slot_list) {
slot = list_entry(tmp, struct slot, slot_list);
list_del(&slot->slot_list);
if (EMI(ctrl->ctrlcap))
if (EMI(ctrl))
sysfs_remove_file(&slot->hotplug_slot->kobj,
&hotplug_slot_attr_lock.attr);
cancel_delayed_work(&slot->work);
@@ -305,7 +312,7 @@ static int set_attention_status(struct hotplug_slot *hotplug_slot, u8 status)
hotplug_slot->info->attention_status = status;
if (ATTN_LED(slot->ctrl->ctrlcap))
if (ATTN_LED(slot->ctrl))
slot->hpc_ops->set_attention_status(slot, status);
return 0;
@@ -472,7 +479,7 @@ static int pciehp_probe(struct pcie_device *dev, const struct pcie_port_service_
if (rc) /* -ENODEV: shouldn't happen, but deal with it */
value = 0;
}
if ((POWER_CTRL(ctrl->ctrlcap)) && !value) {
if ((POWER_CTRL(ctrl)) && !value) {
rc = t_slot->hpc_ops->power_off_slot(t_slot); /* Power off slot if not occupied*/
if (rc)
goto err_out_free_ctrl_slot;
drivers/pci/hotplug/pciehp_ctrl.c
+23 -23
View File
@@ -178,7 +178,7 @@ u8 pciehp_handle_power_fault(u8 hp_slot, struct controller *ctrl)
static void set_slot_off(struct controller *ctrl, struct slot * pslot)
{
/* turn off slot, turn on Amber LED, turn off Green LED if supported*/
if (POWER_CTRL(ctrl->ctrlcap)) {
if (POWER_CTRL(ctrl)) {
if (pslot->hpc_ops->power_off_slot(pslot)) {
err("%s: Issue of Slot Power Off command failed\n",
__func__);
@@ -186,10 +186,10 @@ static void set_slot_off(struct controller *ctrl, struct slot * pslot)
}
}
if (PWR_LED(ctrl->ctrlcap))
if (PWR_LED(ctrl))
pslot->hpc_ops->green_led_off(pslot);
if (ATTN_LED(ctrl->ctrlcap)) {
if (ATTN_LED(ctrl)) {
if (pslot->hpc_ops->set_attention_status(pslot, 1)) {
err("%s: Issue of Set Attention Led command failed\n",
__func__);
@@ -214,14 +214,14 @@ static int board_added(struct slot *p_slot)
__func__, p_slot->device,
ctrl->slot_device_offset, p_slot->hp_slot);
if (POWER_CTRL(ctrl->ctrlcap)) {
if (POWER_CTRL(ctrl)) {
/* Power on slot */
retval = p_slot->hpc_ops->power_on_slot(p_slot);
if (retval)
return retval;
}
if (PWR_LED(ctrl->ctrlcap))
if (PWR_LED(ctrl))
p_slot->hpc_ops->green_led_blink(p_slot);
/* Wait for ~1 second */
@@ -254,7 +254,7 @@ static int board_added(struct slot *p_slot)
*/
if (pcie_mch_quirk)
pci_fixup_device(pci_fixup_final, ctrl->pci_dev);
if (PWR_LED(ctrl->ctrlcap))
if (PWR_LED(ctrl))
p_slot->hpc_ops->green_led_on(p_slot);
return 0;
@@ -279,7 +279,7 @@ static int remove_board(struct slot *p_slot)
dbg("In %s, hp_slot = %d\n", __func__, p_slot->hp_slot);
if (POWER_CTRL(ctrl->ctrlcap)) {
if (POWER_CTRL(ctrl)) {
/* power off slot */
retval = p_slot->hpc_ops->power_off_slot(p_slot);
if (retval) {
@@ -289,7 +289,7 @@ static int remove_board(struct slot *p_slot)
}
}
if (PWR_LED(ctrl->ctrlcap))
if (PWR_LED(ctrl))
/* turn off Green LED */
p_slot->hpc_ops->green_led_off(p_slot);
@@ -327,7 +327,7 @@ static void pciehp_power_thread(struct work_struct *work)
case POWERON_STATE:
mutex_unlock(&p_slot->lock);
if (pciehp_enable_slot(p_slot) &&
PWR_LED(p_slot->ctrl->ctrlcap))
PWR_LED(p_slot->ctrl))
p_slot->hpc_ops->green_led_off(p_slot);
mutex_lock(&p_slot->lock);
p_slot->state = STATIC_STATE;
@@ -409,9 +409,9 @@ static void handle_button_press_event(struct slot *p_slot)
"press.\n", p_slot->name);
}
/* blink green LED and turn off amber */
if (PWR_LED(ctrl->ctrlcap))
if (PWR_LED(ctrl))
p_slot->hpc_ops->green_led_blink(p_slot);
if (ATTN_LED(ctrl->ctrlcap))
if (ATTN_LED(ctrl))
p_slot->hpc_ops->set_attention_status(p_slot, 0);
schedule_delayed_work(&p_slot->work, 5*HZ);
@@ -427,13 +427,13 @@ static void handle_button_press_event(struct slot *p_slot)
dbg("%s: button cancel\n", __func__);
cancel_delayed_work(&p_slot->work);
if (p_slot->state == BLINKINGOFF_STATE) {
if (PWR_LED(ctrl->ctrlcap))
if (PWR_LED(ctrl))
p_slot->hpc_ops->green_led_on(p_slot);
} else {
if (PWR_LED(ctrl->ctrlcap))
if (PWR_LED(ctrl))
p_slot->hpc_ops->green_led_off(p_slot);
}
if (ATTN_LED(ctrl->ctrlcap))
if (ATTN_LED(ctrl))
p_slot->hpc_ops->set_attention_status(p_slot, 0);
info("PCI slot #%s - action canceled due to button press\n",
p_slot->name);
@@ -492,16 +492,16 @@ static void interrupt_event_handler(struct work_struct *work)
handle_button_press_event(p_slot);
break;
case INT_POWER_FAULT:
if (!POWER_CTRL(ctrl->ctrlcap))
if (!POWER_CTRL(ctrl))
break;
if (ATTN_LED(ctrl->ctrlcap))
if (ATTN_LED(ctrl))
p_slot->hpc_ops->set_attention_status(p_slot, 1);
if (PWR_LED(ctrl->ctrlcap))
if (PWR_LED(ctrl))
p_slot->hpc_ops->green_led_off(p_slot);
break;
case INT_PRESENCE_ON:
case INT_PRESENCE_OFF:
if (!HP_SUPR_RM(ctrl->ctrlcap))
if (!HP_SUPR_RM(ctrl))
break;
dbg("Surprise Removal\n");
update_slot_info(p_slot);
@@ -531,7 +531,7 @@ int pciehp_enable_slot(struct slot *p_slot)
mutex_unlock(&p_slot->ctrl->crit_sect);
return -ENODEV;
}
if (MRL_SENS(p_slot->ctrl->ctrlcap)) {
if (MRL_SENS(p_slot->ctrl)) {
rc = p_slot->hpc_ops->get_latch_status(p_slot, &getstatus);
if (rc || getstatus) {
info("%s: latch open on slot(%s)\n", __func__,
@@ -541,7 +541,7 @@ int pciehp_enable_slot(struct slot *p_slot)
}
}
if (POWER_CTRL(p_slot->ctrl->ctrlcap)) {
if (POWER_CTRL(p_slot->ctrl)) {
rc = p_slot->hpc_ops->get_power_status(p_slot, &getstatus);
if (rc || getstatus) {
info("%s: already enabled on slot(%s)\n", __func__,
@@ -576,7 +576,7 @@ int pciehp_disable_slot(struct slot *p_slot)
/* Check to see if (latch closed, card present, power on) */
mutex_lock(&p_slot->ctrl->crit_sect);
if (!HP_SUPR_RM(p_slot->ctrl->ctrlcap)) {
if (!HP_SUPR_RM(p_slot->ctrl)) {
ret = p_slot->hpc_ops->get_adapter_status(p_slot, &getstatus);
if (ret || !getstatus) {
info("%s: no adapter on slot(%s)\n", __func__,
@@ -586,7 +586,7 @@ int pciehp_disable_slot(struct slot *p_slot)
}
}
if (MRL_SENS(p_slot->ctrl->ctrlcap)) {
if (MRL_SENS(p_slot->ctrl)) {
ret = p_slot->hpc_ops->get_latch_status(p_slot, &getstatus);
if (ret || getstatus) {
info("%s: latch open on slot(%s)\n", __func__,
@@ -596,7 +596,7 @@ int pciehp_disable_slot(struct slot *p_slot)
}
}
if (POWER_CTRL(p_slot->ctrl->ctrlcap)) {
if (POWER_CTRL(p_slot->ctrl)) {
ret = p_slot->hpc_ops->get_power_status(p_slot, &getstatus);
if (ret || !getstatus) {
info("%s: already disabled slot(%s)\n", __func__,
drivers/pci/hotplug/pciehp_hpc.c
+179 -394
View File
File diff suppressed because it is too large Load Diff
drivers/pci/hotplug/shpchp_core.c
+9 -2
View File
@@ -39,6 +39,7 @@
int shpchp_debug;
int shpchp_poll_mode;
int shpchp_poll_time;
int shpchp_slot_with_bus;
struct workqueue_struct *shpchp_wq;
#define DRIVER_VERSION "0.4"
@@ -52,9 +53,11 @@ MODULE_LICENSE("GPL");
module_param(shpchp_debug, bool, 0644);
module_param(shpchp_poll_mode, bool, 0644);
module_param(shpchp_poll_time, int, 0644);
module_param(shpchp_slot_with_bus, bool, 0644);
MODULE_PARM_DESC(shpchp_debug, "Debugging mode enabled or not");
MODULE_PARM_DESC(shpchp_poll_mode, "Using polling mechanism for hot-plug events or not");
MODULE_PARM_DESC(shpchp_poll_time, "Polling mechanism frequency, in seconds");
MODULE_PARM_DESC(shpchp_slot_with_bus, "Use bus number in the slot name");
#define SHPC_MODULE_NAME "shpchp"
@@ -100,8 +103,12 @@ static void release_slot(struct hotplug_slot *hotplug_slot)
static void make_slot_name(struct slot *slot)
{
snprintf(slot->hotplug_slot->name, SLOT_NAME_SIZE, "%04d_%04d",
slot->bus, slot->number);
if (shpchp_slot_with_bus)
snprintf(slot->hotplug_slot->name, SLOT_NAME_SIZE, "%04d_%04d",
slot->bus, slot->number);
else
snprintf(slot->hotplug_slot->name, SLOT_NAME_SIZE, "%d",
slot->number);
}
static int init_slots(struct controller *ctrl)
drivers/pci/msi.c
+40 -16
View File
@@ -123,7 +123,7 @@ static void msix_flush_writes(unsigned int irq)
}
}
static void msi_set_mask_bit(unsigned int irq, int flag)
static void msi_set_mask_bits(unsigned int irq, u32 mask, u32 flag)
{
struct msi_desc *entry;
@@ -137,8 +137,8 @@ static void msi_set_mask_bit(unsigned int irq, int flag)
pos = (long)entry->mask_base;
pci_read_config_dword(entry->dev, pos, &mask_bits);
mask_bits &= ~(1);
mask_bits |= flag;
mask_bits &= ~(mask);
mask_bits |= flag & mask;
pci_write_config_dword(entry->dev, pos, mask_bits);
} else {
msi_set_enable(entry->dev, !flag);
@@ -241,13 +241,13 @@ void write_msi_msg(unsigned int irq, struct msi_msg *msg)
void mask_msi_irq(unsigned int irq)
{
msi_set_mask_bit(irq, 1);
msi_set_mask_bits(irq, 1, 1);
msix_flush_writes(irq);
}
void unmask_msi_irq(unsigned int irq)
{
msi_set_mask_bit(irq, 0);
msi_set_mask_bits(irq, 1, 0);
msix_flush_writes(irq);
}
@@ -291,7 +291,8 @@ static void __pci_restore_msi_state(struct pci_dev *dev)
msi_set_enable(dev, 0);
write_msi_msg(dev->irq, &entry->msg);
if (entry->msi_attrib.maskbit)
msi_set_mask_bit(dev->irq, entry->msi_attrib.masked);
msi_set_mask_bits(dev->irq, entry->msi_attrib.maskbits_mask,
entry->msi_attrib.masked);
pci_read_config_word(dev, pos + PCI_MSI_FLAGS, &control);
control &= ~(PCI_MSI_FLAGS_QSIZE | PCI_MSI_FLAGS_ENABLE);
@@ -315,7 +316,7 @@ static void __pci_restore_msix_state(struct pci_dev *dev)
list_for_each_entry(entry, &dev->msi_list, list) {
write_msi_msg(entry->irq, &entry->msg);
msi_set_mask_bit(entry->irq, entry->msi_attrib.masked);
msi_set_mask_bits(entry->irq, 1, entry->msi_attrib.masked);
}
BUG_ON(list_empty(&dev->msi_list));
@@ -382,6 +383,7 @@ static int msi_capability_init(struct pci_dev *dev)
pci_write_config_dword(dev,
msi_mask_bits_reg(pos, is_64bit_address(control)),
maskbits);
entry->msi_attrib.maskbits_mask = temp;
}
list_add_tail(&entry->list, &dev->msi_list);
@@ -569,10 +571,9 @@ int pci_enable_msi(struct pci_dev* dev)
}
EXPORT_SYMBOL(pci_enable_msi);
void pci_disable_msi(struct pci_dev* dev)
void pci_msi_shutdown(struct pci_dev* dev)
{
struct msi_desc *entry;
int default_irq;
if (!pci_msi_enable || !dev || !dev->msi_enabled)
return;
@@ -583,15 +584,31 @@ void pci_disable_msi(struct pci_dev* dev)
BUG_ON(list_empty(&dev->msi_list));
entry = list_entry(dev->msi_list.next, struct msi_desc, list);
if (!entry->dev || entry->msi_attrib.type != PCI_CAP_ID_MSI) {
return;
/* Return the the pci reset with msi irqs unmasked */
if (entry->msi_attrib.maskbit) {
u32 mask = entry->msi_attrib.maskbits_mask;
msi_set_mask_bits(dev->irq, mask, ~mask);
}
default_irq = entry->msi_attrib.default_irq;
msi_free_irqs(dev);
if (!entry->dev || entry->msi_attrib.type != PCI_CAP_ID_MSI)
return;
/* Restore dev->irq to its default pin-assertion irq */
dev->irq = default_irq;
dev->irq = entry->msi_attrib.default_irq;
}
void pci_disable_msi(struct pci_dev* dev)
{
struct msi_desc *entry;
if (!pci_msi_enable || !dev || !dev->msi_enabled)
return;
pci_msi_shutdown(dev);
entry = list_entry(dev->msi_list.next, struct msi_desc, list);
if (!entry->dev || entry->msi_attrib.type != PCI_CAP_ID_MSI)
return;
msi_free_irqs(dev);
}
EXPORT_SYMBOL(pci_disable_msi);
@@ -684,7 +701,7 @@ static void msix_free_all_irqs(struct pci_dev *dev)
msi_free_irqs(dev);
}
void pci_disable_msix(struct pci_dev* dev)
void pci_msix_shutdown(struct pci_dev* dev)
{
if (!pci_msi_enable || !dev || !dev->msix_enabled)
return;
@@ -692,6 +709,13 @@ void pci_disable_msix(struct pci_dev* dev)
msix_set_enable(dev, 0);
pci_intx_for_msi(dev, 1);
dev->msix_enabled = 0;
}
void pci_disable_msix(struct pci_dev* dev)
{
if (!pci_msi_enable || !dev || !dev->msix_enabled)
return;
pci_msix_shutdown(dev);
msix_free_all_irqs(dev);
}
drivers/pci/pci-driver.c
+2
View File
@@ -360,6 +360,8 @@ static void pci_device_shutdown(struct device *dev)
if (drv && drv->shutdown)
drv->shutdown(pci_dev);
pci_msi_shutdown(pci_dev);
pci_msix_shutdown(pci_dev);
}
/**
drivers/pci/pcie/Kconfig
+1 -1
View File
@@ -33,7 +33,7 @@ source "drivers/pci/pcie/aer/Kconfig"
config PCIEASPM
bool "PCI Express ASPM support(Experimental)"
depends on PCI && EXPERIMENTAL && PCIEPORTBUS
default y
default n
help
This enables PCI Express ASPM (Active State Power Management) and
Clock Power Management. ASPM supports state L0/L0s/L1.