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| author | Rafael J. Wysocki <rjw@sisk.pl> | 2008-07-07 03:36:24 +0200 |
|---|---|---|
| committer | Jesse Barnes <jbarnes@virtuousgeek.org> | 2008-07-07 16:26:50 -0700 |
| commit | 337001b6c42938f49a880b1b8306c3ed771a7e61 (patch) | |
| tree | 0e704359c989beba626388cf2404f038e55f442e /include | |
| parent | 404cc2d8ce41ed4031958fba8e633767e8a2e028 (diff) | |
| download | linux-337001b6c42938f49a880b1b8306c3ed771a7e61.tar.gz linux-337001b6c42938f49a880b1b8306c3ed771a7e61.tar.bz2 linux-337001b6c42938f49a880b1b8306c3ed771a7e61.zip | |
PCI: Simplify PCI device PM code
If the offset of PCI device's PM capability in its configuration space,
the mask of states that the device supports PME# from and the D1 and D2
support bits are cached in the corresponding struct pci_dev, the PCI
device PM code can be simplified quite a bit.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/pci.h | 8 | ||||
| -rw-r--r-- | include/linux/pci_regs.h | 1 |
2 files changed, 8 insertions, 1 deletions
diff --git a/include/linux/pci.h b/include/linux/pci.h index 52ac06dcce98..68a29f0f2748 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -177,6 +177,13 @@ struct pci_dev { pci_power_t current_state; /* Current operating state. In ACPI-speak, this is D0-D3, D0 being fully functional, and D3 being off. */ + int pm_cap; /* PM capability offset in the + configuration space */ + unsigned int pme_support:5; /* Bitmask of states from which PME# + can be generated */ + unsigned int d1_support:1; /* Low power state D1 is supported */ + unsigned int d2_support:1; /* Low power state D2 is supported */ + unsigned int no_d1d2:1; /* Only allow D0 and D3 */ #ifdef CONFIG_PCIEASPM struct pcie_link_state *link_state; /* ASPM link state. */ @@ -201,7 +208,6 @@ struct pci_dev { unsigned int is_added:1; unsigned int is_busmaster:1; /* device is busmaster */ unsigned int no_msi:1; /* device may not use msi */ - unsigned int no_d1d2:1; /* only allow d0 or d3 */ unsigned int block_ucfg_access:1; /* userspace config space access is blocked */ unsigned int broken_parity_status:1; /* Device generates false positive parity */ unsigned int msi_enabled:1; diff --git a/include/linux/pci_regs.h b/include/linux/pci_regs.h index c0c1223c9194..19958b929905 100644 --- a/include/linux/pci_regs.h +++ b/include/linux/pci_regs.h @@ -231,6 +231,7 @@ #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_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 */ #define PCI_PM_CTRL_STATE_MASK 0x0003 /* Current power state (D0 to D3) */ #define PCI_PM_CTRL_NO_SOFT_RESET 0x0004 /* No reset for D3hot->D0 */ |