[PATCH 08/12] PCI: Make quirk_io_region to use addon_resource support

From: Yinghai Lu
Date: Tue Mar 13 2012 - 03:29:48 EST

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after they are put in add-on resources, they will be safely claimed later.

Signed-off-by: Yinghai Lu <yinghai@xxxxxxxxxx>
---
drivers/pci/quirks.c | 155 ++++++++++++++++++++++---------------------------
1 files changed, 70 insertions(+), 85 deletions(-)

diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
index cbe7dd9..4561610 100644
--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c
@@ -324,29 +324,61 @@ static void __devinit quirk_cs5536_vsa(struct pci_dev *dev)
}
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_CS5536_ISA, quirk_cs5536_vsa);

-static void __devinit quirk_io_region(struct pci_dev *dev, unsigned region,
- unsigned size, int nr, const char *name)
+static int quirk_read_io(struct pci_dev *dev, struct resource *res, int port)
{
- region &= ~(size-1);
- if (region) {
- struct pci_bus_region bus_region;
- struct resource *res = dev->resource + nr;
+ struct pci_bus_region bus_region;
+ u16 region;
+ unsigned size = to_pci_dev_addon_resource(res)->size;

- res->name = pci_name(dev);
- res->start = region;
- res->end = region + size - 1;
- res->flags = IORESOURCE_IO;
+ pci_read_config_word(dev, port, &region);
+ region &= ~(size - 1);

- /* Convert from PCI bus to resource space. */
- bus_region.start = res->start;
- bus_region.end = res->end;
- pcibios_bus_to_resource(dev, res, &bus_region);
+ /* Convert from PCI bus to resource space. */
+ bus_region.start = region;
+ bus_region.end = region + size - 1;

- if (pci_claim_resource(dev, nr) == 0)
- dev_info(&dev->dev, "quirk: %pR claimed by %s\n",
- res, name);
- }
-}
+ pcibios_bus_to_resource(dev, res, &bus_region);
+
+ res->flags |= IORESOURCE_IO;
+ dev_info(&dev->dev, "PIO at %pR\n", res);
+
+ return 0;
+}
+static int quirk_write_io(struct pci_dev *dev, struct resource *res, int port)
+{
+ struct pci_bus_region bus_region;
+ u16 region;
+ unsigned size = to_pci_dev_addon_resource(res)->size;
+
+ pci_read_config_word(dev, port, &region);
+ region &= size - 1;
+
+ /* Convert to PCI bus space. */
+ pcibios_resource_to_bus(dev, &bus_region, res);
+ region |= bus_region.start & (~(size - 1));
+
+ pci_write_config_word(dev, port, region);
+
+ return 0;
+}
+static struct resource_ops quirk_io_ops = {
+ .read = quirk_read_io,
+ .write = quirk_write_io,
+};
+
+static void __devinit quirk_io_region(struct pci_dev *dev, int port,
+ unsigned size, char *name)
+{
+ u16 region;
+
+ pci_read_config_word(dev, port, &region);
+ region &= size - 1;
+
+ if (!region)
+ return;
+
+ add_pci_dev_addon_resource(dev, port, size, &quirk_io_ops, name);
+}

/*
* ATI Northbridge setups MCE the processor if you even
@@ -374,12 +406,8 @@ DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RS100, quirk_ati_
*/
static void __devinit quirk_ali7101_acpi(struct pci_dev *dev)
{
- u16 region;
-
- pci_read_config_word(dev, 0xE0, &region);
- quirk_io_region(dev, region, 64, PCI_BRIDGE_RESOURCES, "ali7101 ACPI");
- pci_read_config_word(dev, 0xE2, &region);
- quirk_io_region(dev, region, 32, PCI_BRIDGE_RESOURCES+1, "ali7101 SMB");
+ quirk_io_region(dev, 0xE0, 64, "ali7101 ACPI");
+ quirk_io_region(dev, 0xE2, 32, "ali7101 SMB");
}
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M7101, quirk_ali7101_acpi);

@@ -503,12 +531,10 @@ static void piix4_mem_quirk(struct pci_dev *dev, char *name, unsigned int port,
*/
static void __devinit quirk_piix4_acpi(struct pci_dev *dev)
{
- u32 region, res_a;
+ u32 res_a;

- pci_read_config_dword(dev, 0x40, &region);
- quirk_io_region(dev, region, 64, PCI_BRIDGE_RESOURCES, "PIIX4 ACPI");
- pci_read_config_dword(dev, 0x90, &region);
- quirk_io_region(dev, region, 16, PCI_BRIDGE_RESOURCES+1, "PIIX4 SMB");
+ quirk_io_region(dev, 0x40, 64, "PIIX4 ACPI");
+ quirk_io_region(dev, 0x90, 16, "PIIX4 SMB");

/* Device resource A has enables for some of the other ones */
pci_read_config_dword(dev, 0x5c, &res_a);
@@ -552,7 +578,6 @@ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443MX_3, qui
*/
static void __devinit quirk_ich4_lpc_acpi(struct pci_dev *dev)
{
- u32 region;
u8 enable;

/*
@@ -564,22 +589,12 @@ static void __devinit quirk_ich4_lpc_acpi(struct pci_dev *dev)
*/

pci_read_config_byte(dev, ICH_ACPI_CNTL, &enable);
- if (enable & ICH4_ACPI_EN) {
- pci_read_config_dword(dev, ICH_PMBASE, &region);
- region &= PCI_BASE_ADDRESS_IO_MASK;
- if (region >= PCIBIOS_MIN_IO)
- quirk_io_region(dev, region, 128, PCI_BRIDGE_RESOURCES,
- "ICH4 ACPI/GPIO/TCO");
- }
+ if (enable & ICH4_ACPI_EN)
+ quirk_io_region(dev, ICH_PMBASE, 128, "ICH4 ACPI/GPIO/TCO");

pci_read_config_byte(dev, ICH4_GPIO_CNTL, &enable);
- if (enable & ICH4_GPIO_EN) {
- pci_read_config_dword(dev, ICH4_GPIOBASE, &region);
- region &= PCI_BASE_ADDRESS_IO_MASK;
- if (region >= PCIBIOS_MIN_IO)
- quirk_io_region(dev, region, 64,
- PCI_BRIDGE_RESOURCES + 1, "ICH4 GPIO");
- }
+ if (enable & ICH4_GPIO_EN)
+ quirk_io_region(dev, ICH4_GPIOBASE, 64, "ICH4 GPIO");
}
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AA_0, quirk_ich4_lpc_acpi);
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AB_0, quirk_ich4_lpc_acpi);
@@ -594,26 +609,15 @@ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB_1, qui

static void __devinit ich6_lpc_acpi_gpio(struct pci_dev *dev)
{
- u32 region;
u8 enable;

pci_read_config_byte(dev, ICH_ACPI_CNTL, &enable);
- if (enable & ICH6_ACPI_EN) {
- pci_read_config_dword(dev, ICH_PMBASE, &region);
- region &= PCI_BASE_ADDRESS_IO_MASK;
- if (region >= PCIBIOS_MIN_IO)
- quirk_io_region(dev, region, 128, PCI_BRIDGE_RESOURCES,
- "ICH6 ACPI/GPIO/TCO");
- }
+ if (enable & ICH6_ACPI_EN)
+ quirk_io_region(dev, ICH_PMBASE, 128, "ICH6 ACPI/GPIO/TCO");

pci_read_config_byte(dev, ICH6_GPIO_CNTL, &enable);
- if (enable & ICH6_GPIO_EN) {
- pci_read_config_dword(dev, ICH6_GPIOBASE, &region);
- region &= PCI_BASE_ADDRESS_IO_MASK;
- if (region >= PCIBIOS_MIN_IO)
- quirk_io_region(dev, region, 64,
- PCI_BRIDGE_RESOURCES + 1, "ICH6 GPIO");
- }
+ if (enable & ICH6_GPIO_EN)
+ quirk_io_region(dev, ICH6_GPIOBASE, 64, "ICH6 GPIO");
}

static void __devinit ich6_lpc_generic_decode(struct pci_dev *dev, unsigned reg, const char *name, int dynsize)
@@ -711,13 +715,8 @@ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH10_1, qui
*/
static void __devinit quirk_vt82c586_acpi(struct pci_dev *dev)
{
- u32 region;
-
- if (dev->revision & 0x10) {
- pci_read_config_dword(dev, 0x48, &region);
- region &= PCI_BASE_ADDRESS_IO_MASK;
- quirk_io_region(dev, region, 256, PCI_BRIDGE_RESOURCES, "vt82c586 ACPI");
- }
+ if (dev->revision & 0x10)
+ quirk_io_region(dev, 0x48, 256, "vt82c586 ACPI");
}
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_3, quirk_vt82c586_acpi);

@@ -729,18 +728,11 @@ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_3, quirk_vt
*/
static void __devinit quirk_vt82c686_acpi(struct pci_dev *dev)
{
- u16 hm;
- u32 smb;
-
quirk_vt82c586_acpi(dev);

- pci_read_config_word(dev, 0x70, &hm);
- hm &= PCI_BASE_ADDRESS_IO_MASK;
- quirk_io_region(dev, hm, 128, PCI_BRIDGE_RESOURCES + 1, "vt82c686 HW-mon");
+ quirk_io_region(dev, 0x70, 128, "vt82c686 HW-mon");

- pci_read_config_dword(dev, 0x90, &smb);
- smb &= PCI_BASE_ADDRESS_IO_MASK;
- quirk_io_region(dev, smb, 16, PCI_BRIDGE_RESOURCES + 2, "vt82c686 SMB");
+ quirk_io_region(dev, 0x90, 16, "vt82c686 SMB");
}
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686_4, quirk_vt82c686_acpi);

@@ -751,15 +743,8 @@ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686_4, quirk_vt
*/
static void __devinit quirk_vt8235_acpi(struct pci_dev *dev)
{
- u16 pm, smb;
-
- pci_read_config_word(dev, 0x88, &pm);
- pm &= PCI_BASE_ADDRESS_IO_MASK;
- quirk_io_region(dev, pm, 128, PCI_BRIDGE_RESOURCES, "vt8235 PM");
-
- pci_read_config_word(dev, 0xd0, &smb);
- smb &= PCI_BASE_ADDRESS_IO_MASK;
- quirk_io_region(dev, smb, 16, PCI_BRIDGE_RESOURCES + 1, "vt8235 SMB");
+ quirk_io_region(dev, 0x88, 128, "vt8235 PM");
+ quirk_io_region(dev, 0xd0, 16, "vt8235 SMB");
}
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8235, quirk_vt8235_acpi);

--
1.7.7

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Next message: Alessandro Rubini: "[PATCH V4 1/3] x86: introduce CONFIG_X86_DEV_DMA_OPS"
Previous message: Yinghai Lu: "[PATCH 11/12] PCI, cphi_hotplug: Simplify configure_slot"
In reply to: Yinghai Lu: "[PATCH 11/12] PCI, cphi_hotplug: Simplify configure_slot"
Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]