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Merge branch 'pci/pm'

Browse Source 
- Remove unused pcibios_pm_ops (Vaibhav Gupta)

- Rename pci_dev.d3_delay to d3hot_delay (Krzysztof Wilczyński)

- Apply D2 transition delay as microseconds, not milliseconds (Bjorn
  Helgaas)

* pci/pm:
  PCI/PM: Revert "PCI/PM: Apply D2 delay as milliseconds, not microseconds"
  PCI/PM: Remove unused PCI_PM_BUS_WAIT
  PCI/PM: Rename pci_dev.d3_delay to d3hot_delay
  PCI/PM: Remove unused pcibios_pm_ops
This commit is contained in:
Bjorn Helgaas 2020-10-21 09:58:35 -05:00
commit 0d2493ab08
13 changed files with 55 additions and 86 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
Documentation/power/pci.rst
View File

@ -320,7 +320,7 @@ that these callbacks operate on::
unsigned int d2_support:1; /* Low power state D2 is supported */
unsigned int no_d1d2:1; /* D1 and D2 are forbidden */
unsigned int wakeup_prepared:1; /* Device prepared for wake up */
unsigned int d3_delay; /* D3->D0 transition time in ms */
unsigned int d3hot_delay; /* D3hot->D0 transition time in ms */
...
};

2
arch/x86/pci/fixup.c
View File

@ -587,7 +587,7 @@ DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0xa26d, pci_invalid_bar);
static void pci_fixup_amd_ehci_pme(struct pci_dev *dev)
{
dev_info(&dev->dev, "PME# does not work under D3, disabling it\n");
dev->pme_support &= ~((PCI_PM_CAP_PME_D3 | PCI_PM_CAP_PME_D3cold)
dev->pme_support &= ~((PCI_PM_CAP_PME_D3hot | PCI_PM_CAP_PME_D3cold)
>> PCI_PM_CAP_PME_SHIFT);
}
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, 0x7808, pci_fixup_amd_ehci_pme);

2
arch/x86/pci/intel_mid_pci.c
View File

@ -322,7 +322,7 @@ static void pci_d3delay_fixup(struct pci_dev *dev)
*/
if (type1_access_ok(dev->bus->number, dev->devfn, PCI_DEVICE_ID))
return;
dev->d3_delay = 0;
dev->d3hot_delay = 0;
}
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_ANY_ID, pci_d3delay_fixup);

2
drivers/hid/intel-ish-hid/ipc/ipc.c
View File

@ -755,7 +755,7 @@ static int _ish_hw_reset(struct ishtp_device *dev)
csr |= PCI_D3hot;
pci_write_config_word(pdev, pdev->pm_cap + PCI_PM_CTRL, csr);
mdelay(pdev->d3_delay);
mdelay(pdev->d3hot_delay);
csr &= ~PCI_PM_CTRL_STATE_MASK;
csr |= PCI_D0;

2
drivers/net/ethernet/marvell/sky2.c
View File

@ -5105,7 +5105,7 @@ static int sky2_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
INIT_WORK(&hw->restart_work, sky2_restart);
pci_set_drvdata(pdev, hw);
pdev->d3_delay = 300;
pdev->d3hot_delay = 300;
return 0;

6
drivers/pci/pci-acpi.c
View File

@ -1167,7 +1167,7 @@ static struct acpi_device *acpi_pci_find_companion(struct device *dev)
* @pdev: the PCI device whose delay is to be updated
* @handle: ACPI handle of this device
*
* Update the d3_delay and d3cold_delay of a PCI device from the ACPI _DSM
* Update the d3hot_delay and d3cold_delay of a PCI device from the ACPI _DSM
* control method of either the device itself or the PCI host bridge.
*
* Function 8, "Reset Delay," applies to the entire hierarchy below a PCI
@ -1206,8 +1206,8 @@ static void pci_acpi_optimize_delay(struct pci_dev *pdev,
}
if (elements[3].type == ACPI_TYPE_INTEGER) {
value = (int)elements[3].integer.value / 1000;
if (value < PCI_PM_D3_WAIT)
pdev->d3_delay = value;
if (value < PCI_PM_D3HOT_WAIT)
pdev->d3hot_delay = value;
}
}
ACPI_FREE(obj);

26
drivers/pci/pci-driver.c
View File

@ -969,12 +969,6 @@ static int pci_pm_resume(struct device *dev)
#ifdef CONFIG_HIBERNATE_CALLBACKS
/*
* pcibios_pm_ops - provide arch-specific hooks when a PCI device is doing
* a hibernate transition
*/
struct dev_pm_ops __weak pcibios_pm_ops;
static int pci_pm_freeze(struct device *dev)
{
struct pci_dev *pci_dev = to_pci_dev(dev);
@ -1033,9 +1027,6 @@ static int pci_pm_freeze_noirq(struct device *dev)
pci_pm_set_unknown_state(pci_dev);
if (pcibios_pm_ops.freeze_noirq)
return pcibios_pm_ops.freeze_noirq(dev);
return 0;
}
@ -1043,13 +1034,6 @@ static int pci_pm_thaw_noirq(struct device *dev)
{
struct pci_dev *pci_dev = to_pci_dev(dev);
const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
int error;
if (pcibios_pm_ops.thaw_noirq) {
error = pcibios_pm_ops.thaw_noirq(dev);
if (error)
return error;
}
/*
* The pm->thaw_noirq() callback assumes the device has been
@ -1174,9 +1158,6 @@ static int pci_pm_poweroff_noirq(struct device *dev)
pci_fixup_device(pci_fixup_suspend_late, pci_dev);
if (pcibios_pm_ops.poweroff_noirq)
return pcibios_pm_ops.poweroff_noirq(dev);
return 0;
}
@ -1184,13 +1165,6 @@ static int pci_pm_restore_noirq(struct device *dev)
{
struct pci_dev *pci_dev = to_pci_dev(dev);
const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
int error;
if (pcibios_pm_ops.restore_noirq) {
error = pcibios_pm_ops.restore_noirq(dev);
if (error)
return error;
}
pci_pm_default_resume_early(pci_dev);
pci_fixup_device(pci_fixup_resume_early, pci_dev);

16
drivers/pci/pci.c
View File

@ -49,7 +49,7 @@ EXPORT_SYMBOL(isa_dma_bridge_buggy);
int pci_pci_problems;
EXPORT_SYMBOL(pci_pci_problems);
unsigned int pci_pm_d3_delay;
unsigned int pci_pm_d3hot_delay;
static void pci_pme_list_scan(struct work_struct *work);
@ -66,10 +66,10 @@ struct pci_pme_device {
static void pci_dev_d3_sleep(struct pci_dev *dev)
{
unsigned int delay = dev->d3_delay;
unsigned int delay = dev->d3hot_delay;
if (delay < pci_pm_d3_delay)
delay = pci_pm_d3_delay;
if (delay < pci_pm_d3hot_delay)
delay = pci_pm_d3hot_delay;
if (delay)
msleep(delay);
@ -1081,7 +1081,7 @@ static int pci_raw_set_power_state(struct pci_dev *dev, pci_power_t state)
if (state == PCI_D3hot || dev->current_state == PCI_D3hot)
pci_dev_d3_sleep(dev);
else if (state == PCI_D2 || dev->current_state == PCI_D2)
msleep(PCI_PM_D2_DELAY);
udelay(PCI_PM_D2_DELAY);
pci_read_config_word(dev, dev->pm_cap + PCI_PM_CTRL, &pmcsr);
dev->current_state = (pmcsr & PCI_PM_CTRL_STATE_MASK);
@ -3029,7 +3029,7 @@ void pci_pm_init(struct pci_dev *dev)
}
dev->pm_cap = pm;
dev->d3_delay = PCI_PM_D3_WAIT;
dev->d3hot_delay = PCI_PM_D3HOT_WAIT;
dev->d3cold_delay = PCI_PM_D3COLD_WAIT;
dev->bridge_d3 = pci_bridge_d3_possible(dev);
dev->d3cold_allowed = true;
@ -3054,7 +3054,7 @@ void pci_pm_init(struct pci_dev *dev)
(pmc & PCI_PM_CAP_PME_D0) ? " D0" : "",
(pmc & PCI_PM_CAP_PME_D1) ? " D1" : "",
(pmc & PCI_PM_CAP_PME_D2) ? " D2" : "",
(pmc & PCI_PM_CAP_PME_D3) ? " D3hot" : "",
(pmc & PCI_PM_CAP_PME_D3hot) ? " D3hot" : "",
(pmc & PCI_PM_CAP_PME_D3cold) ? " D3cold" : "");
dev->pme_support = pmc >> PCI_PM_CAP_PME_SHIFT;
dev->pme_poll = true;
@ -4637,7 +4637,7 @@ static int pci_af_flr(struct pci_dev *dev, int probe)
*
* NOTE: This causes the caller to sleep for twice the device power transition
* cooldown period, which for the D0->D3hot and D3hot->D0 transitions is 10 ms
* by default (i.e. unless the @dev's d3_delay field has a different value).
* by default (i.e. unless the @dev's d3hot_delay field has a different value).
* Moreover, only devices in D0 can be reset by this function.
*/
static int pci_pm_reset(struct pci_dev *dev, int probe)

9
drivers/pci/pci.h
View File

@ -43,10 +43,9 @@ int pci_probe_reset_function(struct pci_dev *dev);
int pci_bridge_secondary_bus_reset(struct pci_dev *dev);
int pci_bus_error_reset(struct pci_dev *dev);
#define PCI_PM_D2_DELAY 200
#define PCI_PM_D3_WAIT 10
#define PCI_PM_D3COLD_WAIT 100
#define PCI_PM_BUS_WAIT 50
#define PCI_PM_D2_DELAY 200 /* usec; see PCIe r4.0, sec 5.9.1 */
#define PCI_PM_D3HOT_WAIT 10 /* msec */
#define PCI_PM_D3COLD_WAIT 100 /* msec */
/**
* struct pci_platform_pm_ops - Firmware PM callbacks
@ -178,7 +177,7 @@ extern struct mutex pci_slot_mutex;
extern raw_spinlock_t pci_lock;
extern unsigned int pci_pm_d3_delay;
extern unsigned int pci_pm_d3hot_delay;
#ifdef CONFIG_PCI_MSI
void pci_no_msi(void);

64
drivers/pci/quirks.c
View File

@ -1846,7 +1846,7 @@ DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHV, quirk_pci
*/
static void quirk_intel_pcie_pm(struct pci_dev *dev)
{
pci_pm_d3_delay = 120;
pci_pm_d3hot_delay = 120;
dev->no_d1d2 = 1;
}
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e2, quirk_intel_pcie_pm);
@ -1873,12 +1873,12 @@ DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x260b, quirk_intel_pcie_pm);
static void quirk_d3hot_delay(struct pci_dev *dev, unsigned int delay)
{
if (dev->d3_delay >= delay)
if (dev->d3hot_delay >= delay)
return;
dev->d3_delay = delay;
dev->d3hot_delay = delay;
pci_info(dev, "extending delay after power-on from D3hot to %d msec\n",
dev->d3_delay);
dev->d3hot_delay);
}
static void quirk_radeon_pm(struct pci_dev *dev)
@ -3387,36 +3387,36 @@ DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0152, disable_igfx_irq);
* PCI devices which are on Intel chips can skip the 10ms delay
* before entering D3 mode.
*/
static void quirk_remove_d3_delay(struct pci_dev *dev)
static void quirk_remove_d3hot_delay(struct pci_dev *dev)
{
dev->d3_delay = 0;
dev->d3hot_delay = 0;
}
/* C600 Series devices do not need 10ms d3_delay */
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0412, quirk_remove_d3_delay);
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0c00, quirk_remove_d3_delay);
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0c0c, quirk_remove_d3_delay);
/* Lynxpoint-H PCH devices do not need 10ms d3_delay */
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c02, quirk_remove_d3_delay);
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c18, quirk_remove_d3_delay);
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c1c, quirk_remove_d3_delay);
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c20, quirk_remove_d3_delay);
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c22, quirk_remove_d3_delay);
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c26, quirk_remove_d3_delay);
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c2d, quirk_remove_d3_delay);
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c31, quirk_remove_d3_delay);
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c3a, quirk_remove_d3_delay);
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c3d, quirk_remove_d3_delay);
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c4e, quirk_remove_d3_delay);
/* Intel Cherrytrail devices do not need 10ms d3_delay */
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2280, quirk_remove_d3_delay);
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2298, quirk_remove_d3_delay);
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x229c, quirk_remove_d3_delay);
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x22b0, quirk_remove_d3_delay);
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x22b5, quirk_remove_d3_delay);
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x22b7, quirk_remove_d3_delay);
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x22b8, quirk_remove_d3_delay);
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x22d8, quirk_remove_d3_delay);
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x22dc, quirk_remove_d3_delay);
/* C600 Series devices do not need 10ms d3hot_delay */
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0412, quirk_remove_d3hot_delay);
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0c00, quirk_remove_d3hot_delay);
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0c0c, quirk_remove_d3hot_delay);
/* Lynxpoint-H PCH devices do not need 10ms d3hot_delay */
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c02, quirk_remove_d3hot_delay);
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c18, quirk_remove_d3hot_delay);
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c1c, quirk_remove_d3hot_delay);
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c20, quirk_remove_d3hot_delay);
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c22, quirk_remove_d3hot_delay);
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c26, quirk_remove_d3hot_delay);
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c2d, quirk_remove_d3hot_delay);
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c31, quirk_remove_d3hot_delay);
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c3a, quirk_remove_d3hot_delay);
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c3d, quirk_remove_d3hot_delay);
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c4e, quirk_remove_d3hot_delay);
/* Intel Cherrytrail devices do not need 10ms d3hot_delay */
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2280, quirk_remove_d3hot_delay);
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2298, quirk_remove_d3hot_delay);
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x229c, quirk_remove_d3hot_delay);
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x22b0, quirk_remove_d3hot_delay);
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x22b5, quirk_remove_d3hot_delay);
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x22b7, quirk_remove_d3hot_delay);
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x22b8, quirk_remove_d3hot_delay);
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x22d8, quirk_remove_d3hot_delay);
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x22dc, quirk_remove_d3hot_delay);
/*
* Some devices may pass our check in pci_intx_mask_supported() if

2
drivers/staging/media/atomisp/pci/atomisp_v4l2.c
View File

@ -1573,7 +1573,7 @@ static int atomisp_pci_probe(struct pci_dev *pdev, const struct pci_device_id *i
spin_lock_init(&isp->lock);
/* This is not a true PCI device on SoC, so the delay is not needed. */
pdev->d3_delay = 0;
pdev->d3hot_delay = 0;
pci_set_drvdata(pdev, isp);

6
include/linux/pci.h
View File

@ -373,7 +373,7 @@ struct pci_dev {
user sysfs */
unsigned int clear_retrain_link:1; /* Need to clear Retrain Link
bit manually */
unsigned int d3_delay; /* D3->D0 transition time in ms */
unsigned int d3hot_delay; /* D3hot->D0 transition time in ms */
unsigned int d3cold_delay; /* D3cold->D0 transition time in ms */
#ifdef CONFIG_PCIEASPM
@ -2035,10 +2035,6 @@ int pcibios_alloc_irq(struct pci_dev *dev);
void pcibios_free_irq(struct pci_dev *dev);
resource_size_t pcibios_default_alignment(void);
#ifdef CONFIG_HIBERNATE_CALLBACKS
extern struct dev_pm_ops pcibios_pm_ops;
#endif
#if defined(CONFIG_PCI_MMCONFIG) || defined(CONFIG_ACPI_MCFG)
void __init pci_mmcfg_early_init(void);
void __init pci_mmcfg_late_init(void);

2
include/uapi/linux/pci_regs.h
View File

@ -246,7 +246,7 @@
#define PCI_PM_CAP_PME_D0 0x0800 /* PME# from D0 */
#define PCI_PM_CAP_PME_D1 0x1000 /* PME# from D1 */
#define PCI_PM_CAP_PME_D2 0x2000 /* PME# from D2 */
#define PCI_PM_CAP_PME_D3 0x4000 /* PME# from D3 (hot) */
#define PCI_PM_CAP_PME_D3hot 0x4000 /* PME# from D3 (hot) */
#define PCI_PM_CAP_PME_D3cold 0x8000 /* PME# from D3 (cold) */
#define PCI_PM_CAP_PME_SHIFT 11 /* Start of the PME Mask in PMC */
#define PCI_PM_CTRL 4 /* PM control and status register */