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WSL2-Linux-Kernel
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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6 

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6:
  PCI hotplug: Change link order of pciehp & acpiphp
  PCI hotplug: fakephp: Allocate PCI resources before adding the device
  PCI MSI: Fix undefined shift by 32
  PCI PM: Do not wait for buses in B2 or B3 during resume
  PCI PM: Power up devices before restoring their state
  PCI PM: Fix hibernation breakage on EeePC 701
  PCI: irq and pci_ids patch for Intel Tigerpoint DeviceIDs
  PCI PM: Fix suspend error paths and testing facility breakage
This commit is contained in:
Linus Torvalds 2009-02-02 19:28:58 -08:00
Родитель 859281ff37 71a082efc9
Коммит b1792e3670
7 изменённых файлов: 80 добавлений и 36 удалений
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1
arch/x86/pci/irq.c
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@ -572,6 +572,7 @@ static __init int intel_router_probe(struct irq_router *r, struct pci_dev *route
case PCI_DEVICE_ID_INTEL_ICH7_1:
case PCI_DEVICE_ID_INTEL_ICH7_30:
case PCI_DEVICE_ID_INTEL_ICH7_31:
case PCI_DEVICE_ID_INTEL_TGP_LPC:
case PCI_DEVICE_ID_INTEL_ESB2_0:
case PCI_DEVICE_ID_INTEL_ICH8_0:
case PCI_DEVICE_ID_INTEL_ICH8_1:

6
drivers/pci/hotplug/Makefile
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@ -5,11 +5,15 @@
obj-$(CONFIG_HOTPLUG_PCI) += pci_hotplug.o
obj-$(CONFIG_HOTPLUG_PCI_COMPAQ) += cpqphp.o
obj-$(CONFIG_HOTPLUG_PCI_IBM) += ibmphp.o
# pciehp should be linked before acpiphp in order to allow the native driver
# to attempt to bind first. We can then fall back to generic support.
obj-$(CONFIG_HOTPLUG_PCI_PCIE) += pciehp.o
obj-$(CONFIG_HOTPLUG_PCI_ACPI) += acpiphp.o
obj-$(CONFIG_HOTPLUG_PCI_ACPI_IBM) += acpiphp_ibm.o
obj-$(CONFIG_HOTPLUG_PCI_CPCI_ZT5550) += cpcihp_zt5550.o
obj-$(CONFIG_HOTPLUG_PCI_CPCI_GENERIC) += cpcihp_generic.o
obj-$(CONFIG_HOTPLUG_PCI_PCIE) += pciehp.o
obj-$(CONFIG_HOTPLUG_PCI_SHPC) += shpchp.o
obj-$(CONFIG_HOTPLUG_PCI_RPA) += rpaphp.o
obj-$(CONFIG_HOTPLUG_PCI_RPA_DLPAR) += rpadlpar_io.o

42
drivers/pci/hotplug/fakephp.c
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@ -195,13 +195,13 @@ static void remove_slot_worker(struct work_struct *work)
* Tries hard not to re-enable already existing devices;
* also handles scanning of subfunctions.
*/
static void pci_rescan_slot(struct pci_dev *temp)
static int pci_rescan_slot(struct pci_dev *temp)
{
struct pci_bus *bus = temp->bus;
struct pci_dev *dev;
int func;
int retval;
u8 hdr_type;
int count = 0;
if (!pci_read_config_byte(temp, PCI_HEADER_TYPE, &hdr_type)) {
temp->hdr_type = hdr_type & 0x7f;
@ -213,17 +213,12 @@ static void pci_rescan_slot(struct pci_dev *temp)
dbg("New device on %s function %x:%x\n",
bus->name, temp->devfn >> 3,
temp->devfn & 7);
retval = pci_bus_add_device(dev);
if (retval)
dev_err(&dev->dev, "error adding "
"device, continuing.\n");
else
add_slot(dev);
count++;
}
}
/* multifunction device? */
if (!(hdr_type & 0x80))
return;
return count;
/* continue scanning for other functions */
for (func = 1, temp->devfn++; func < 8; func++, temp->devfn++) {
@ -239,16 +234,13 @@ static void pci_rescan_slot(struct pci_dev *temp)
dbg("New device on %s function %x:%x\n",
bus->name, temp->devfn >> 3,
temp->devfn & 7);
retval = pci_bus_add_device(dev);
if (retval)
dev_err(&dev->dev, "error adding "
"device, continuing.\n");
else
add_slot(dev);
count++;
}
}
}
}
return count;
}
@ -262,6 +254,8 @@ static void pci_rescan_bus(const struct pci_bus *bus)
{
unsigned int devfn;
struct pci_dev *dev;
int retval;
int found = 0;
dev = alloc_pci_dev();
if (!dev)
return;
@ -270,7 +264,23 @@ static void pci_rescan_bus(const struct pci_bus *bus)
dev->sysdata = bus->sysdata;
for (devfn = 0; devfn < 0x100; devfn += 8) {
dev->devfn = devfn;
pci_rescan_slot(dev);
found += pci_rescan_slot(dev);
}
if (found) {
pci_bus_assign_resources(bus);
list_for_each_entry(dev, &bus->devices, bus_list) {
/* Skip already-added devices */
if (dev->is_added)
continue;
retval = pci_bus_add_device(dev);
if (retval)
dev_err(&dev->dev,
"Error adding device, continuing\n");
else
add_slot(dev);
}
pci_bus_add_devices(bus);
}
kfree(dev);
}

13
drivers/pci/msi.c
Просмотреть файл

@ -103,6 +103,16 @@ static void msix_set_enable(struct pci_dev *dev, int enable)
}
}
/*
* Essentially, this is ((1 << (1 << x)) - 1), but without the
* undefinedness of a << 32.
*/
static inline __attribute_const__ u32 msi_mask(unsigned x)
{
static const u32 mask[] = { 1, 2, 4, 0xf, 0xff, 0xffff, 0xffffffff };
return mask[x];
}
static void msix_flush_writes(struct irq_desc *desc)
{
struct msi_desc *entry;
@ -407,8 +417,7 @@ static int msi_capability_init(struct pci_dev *dev)
/* All MSIs are unmasked by default, Mask them all */
pci_read_config_dword(dev, base, &maskbits);
temp = (1 << multi_msi_capable(control));
temp = ((temp - 1) & ~temp);
temp = msi_mask((control & PCI_MSI_FLAGS_QMASK) >> 1);
maskbits |= temp;
pci_write_config_dword(dev, base, maskbits);
entry->msi_attrib.maskbits_mask = temp;

21
drivers/pci/pci-driver.c
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@ -370,6 +370,7 @@ static int pci_legacy_suspend(struct device *dev, pm_message_t state)
}
pci_save_state(pci_dev);
pci_dev->state_saved = true;
/*
* This is for compatibility with existing code with legacy PM support.
*/
@ -419,6 +420,7 @@ static int pci_legacy_resume(struct device *dev)
static void pci_pm_default_resume_noirq(struct pci_dev *pci_dev)
{
pci_restore_standard_config(pci_dev);
pci_dev->state_saved = false;
pci_fixup_device(pci_fixup_resume_early, pci_dev);
}
@ -555,6 +557,13 @@ static int pci_pm_resume(struct device *dev)
struct device_driver *drv = dev->driver;
int error = 0;
/*
* This is necessary for the suspend error path in which resume is
* called without restoring the standard config registers of the device.
*/
if (pci_dev->state_saved)
pci_restore_standard_config(pci_dev);
if (pci_has_legacy_pm_support(pci_dev))
return pci_legacy_resume(dev);
@ -660,7 +669,10 @@ static int pci_pm_poweroff(struct device *dev)
if (pci_has_legacy_pm_support(pci_dev))
return pci_legacy_suspend(dev, PMSG_HIBERNATE);
if (drv && drv->pm && drv->pm->poweroff) {
if (!drv || !drv->pm)
return 0;
if (drv->pm->poweroff) {
error = drv->pm->poweroff(dev);
suspend_report_result(drv->pm->poweroff, error);
}
@ -710,6 +722,13 @@ static int pci_pm_restore(struct device *dev)
struct device_driver *drv = dev->driver;
int error = 0;
/*
* This is necessary for the hibernation error path in which restore is
* called without restoring the standard config registers of the device.
*/
if (pci_dev->state_saved)
pci_restore_standard_config(pci_dev);
if (pci_has_legacy_pm_support(pci_dev))
return pci_legacy_resume(dev);

32
drivers/pci/pci.c
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@ -1393,35 +1393,35 @@ int pci_restore_standard_config(struct pci_dev *dev)
pci_power_t prev_state;
int error;
pci_restore_state(dev);
pci_update_current_state(dev, PCI_D0);
prev_state = dev->current_state;
if (prev_state == PCI_D0)
return 0;
goto Restore;
error = pci_raw_set_power_state(dev, PCI_D0, false);
if (error)
return error;
if (pci_is_bridge(dev)) {
if (prev_state > PCI_D1)
mdelay(PCI_PM_BUS_WAIT);
} else {
switch(prev_state) {
case PCI_D3cold:
case PCI_D3hot:
mdelay(pci_pm_d3_delay);
break;
case PCI_D2:
udelay(PCI_PM_D2_DELAY);
break;
}
/*
* This assumes that we won't get a bus in B2 or B3 from the BIOS, but
* we've made this assumption forever and it appears to be universally
* satisfied.
*/
switch(prev_state) {
case PCI_D3cold:
case PCI_D3hot:
mdelay(pci_pm_d3_delay);
break;
case PCI_D2:
udelay(PCI_PM_D2_DELAY);
break;
}
dev->current_state = PCI_D0;
return 0;
Restore:
return pci_restore_state(dev);
}
/**

1
include/linux/pci_ids.h
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@ -2425,6 +2425,7 @@
#define PCI_DEVICE_ID_INTEL_ICH7_0 0x27b8
#define PCI_DEVICE_ID_INTEL_ICH7_1 0x27b9
#define PCI_DEVICE_ID_INTEL_ICH7_30 0x27b0
#define PCI_DEVICE_ID_INTEL_TGP_LPC 0x27bc
#define PCI_DEVICE_ID_INTEL_ICH7_31 0x27bd
#define PCI_DEVICE_ID_INTEL_ICH7_17 0x27da
#define PCI_DEVICE_ID_INTEL_ICH7_19 0x27dd