[PATCH 2/2] [AGPGART] intel_agp: use table for device probe
Remove big switch to make things clear. Eric Anholt
was the original author.
Signed-off-by: Wang Zhenyu <[email protected]>
---
drivers/char/agp/intel-agp.c | 324 ++++++++++++++++--------------------------
1 files changed, 122 insertions(+), 202 deletions(-)
diff --git a/drivers/char/agp/intel-agp.c b/drivers/char/agp/intel-agp.c
index 151d444..6bfcf64 100644
--- a/drivers/char/agp/intel-agp.c
+++ b/drivers/char/agp/intel-agp.c
@@ -1717,41 +1717,119 @@ static const struct agp_bridge_driver intel_7505_driver = {
.agp_type_to_mask_type = agp_generic_type_to_mask_type,
};
-static int find_i810(u16 device)
-{
- struct pci_dev *i810_dev;
- i810_dev = pci_get_device(PCI_VENDOR_ID_INTEL, device, NULL);
- if (!i810_dev)
- return 0;
- intel_private.pcidev = i810_dev;
- return 1;
-}
-
-static int find_i830(u16 device)
+static int find_gmch(u16 device)
{
- struct pci_dev *i830_dev;
+ struct pci_dev *gmch_device;
- i830_dev = pci_get_device(PCI_VENDOR_ID_INTEL, device, NULL);
- if (i830_dev && PCI_FUNC(i830_dev->devfn) != 0) {
- i830_dev = pci_get_device(PCI_VENDOR_ID_INTEL,
- device, i830_dev);
+ gmch_device = pci_get_device(PCI_VENDOR_ID_INTEL, device, NULL);
+ if (gmch_device && PCI_FUNC(gmch_device->devfn) != 0) {
+ gmch_device = pci_get_device(PCI_VENDOR_ID_INTEL,
+ device, gmch_device);
}
- if (!i830_dev)
+ if (!gmch_device)
return 0;
- intel_private.pcidev = i830_dev;
+ intel_private.pcidev = gmch_device;
return 1;
}
+/* Table to describe Intel GMCH and AGP/PCIE GART drivers. At least one of
+ * driver and gmch_driver must be non-null, and find_gmch will determine
+ * which one should be used if a gmch_chip_id is present.
+ */
+static const struct intel_driver_description {
+ unsigned int chip_id;
+ unsigned int gmch_chip_id;
+ char *name;
+ struct agp_bridge_driver *driver;
+ struct agp_bridge_driver *gmch_driver;
+} intel_agp_chipsets[] = {
+ { PCI_DEVICE_ID_INTEL_82443LX_0, 0, "440LX",
+ (struct agp_bridge_driver *)&intel_generic_driver, NULL },
+ { PCI_DEVICE_ID_INTEL_82443BX_0, 0, "440BX",
+ (struct agp_bridge_driver *)&intel_generic_driver, NULL },
+ { PCI_DEVICE_ID_INTEL_82443GX_0, 0, "440GX",
+ (struct agp_bridge_driver *)&intel_generic_driver, NULL },
+ { PCI_DEVICE_ID_INTEL_82810_MC1, PCI_DEVICE_ID_INTEL_82810_IG1, "i810",
+ NULL, (struct agp_bridge_driver *)&intel_810_driver },
+ { PCI_DEVICE_ID_INTEL_82810_MC3, PCI_DEVICE_ID_INTEL_82810_IG3, "i810",
+ NULL, (struct agp_bridge_driver *)&intel_810_driver },
+ { PCI_DEVICE_ID_INTEL_82810E_MC, PCI_DEVICE_ID_INTEL_82810E_IG, "i810",
+ NULL, (struct agp_bridge_driver *)&intel_810_driver },
+ { PCI_DEVICE_ID_INTEL_82815_MC, PCI_DEVICE_ID_INTEL_82815_CGC, "i815",
+ (struct agp_bridge_driver *)&intel_810_driver,
+ (struct agp_bridge_driver *)&intel_815_driver },
+ { PCI_DEVICE_ID_INTEL_82820_HB, 0, "i820",
+ (struct agp_bridge_driver *)&intel_820_driver, NULL },
+ { PCI_DEVICE_ID_INTEL_82820_UP_HB, 0, "i820",
+ (struct agp_bridge_driver *)&intel_820_driver, NULL },
+ { PCI_DEVICE_ID_INTEL_82830_HB, PCI_DEVICE_ID_INTEL_82830_CGC, "830M",
+ (struct agp_bridge_driver *)&intel_830mp_driver,
+ (struct agp_bridge_driver *)&intel_830_driver },
+ { PCI_DEVICE_ID_INTEL_82840_HB, 0, "i840",
+ (struct agp_bridge_driver *)&intel_840_driver, NULL },
+ { PCI_DEVICE_ID_INTEL_82845_HB, 0, "845G",
+ (struct agp_bridge_driver *)&intel_845_driver, NULL },
+ { PCI_DEVICE_ID_INTEL_82845G_HB, PCI_DEVICE_ID_INTEL_82845G_IG, "830M",
+ (struct agp_bridge_driver *)&intel_845_driver,
+ (struct agp_bridge_driver *)&intel_830_driver },
+ { PCI_DEVICE_ID_INTEL_82850_HB, 0, "i850",
+ (struct agp_bridge_driver *)&intel_850_driver, NULL },
+ { PCI_DEVICE_ID_INTEL_82855PM_HB, 0, "855PM",
+ (struct agp_bridge_driver *)&intel_845_driver, NULL },
+ { PCI_DEVICE_ID_INTEL_82855GM_HB, PCI_DEVICE_ID_INTEL_82855GM_IG, "855GM",
+ (struct agp_bridge_driver *)&intel_845_driver,
+ (struct agp_bridge_driver *)&intel_830_driver },
+ { PCI_DEVICE_ID_INTEL_82860_HB, 0, "i860",
+ (struct agp_bridge_driver *)&intel_860_driver, NULL },
+ { PCI_DEVICE_ID_INTEL_82865_HB, PCI_DEVICE_ID_INTEL_82865_IG, "865",
+ (struct agp_bridge_driver *)&intel_845_driver,
+ (struct agp_bridge_driver *)&intel_830_driver },
+ { PCI_DEVICE_ID_INTEL_82875_HB, 0, "i875",
+ (struct agp_bridge_driver *)&intel_845_driver, NULL },
+ { PCI_DEVICE_ID_INTEL_82915G_HB, PCI_DEVICE_ID_INTEL_82915G_IG, "915G",
+ (struct agp_bridge_driver *)&intel_845_driver,
+ (struct agp_bridge_driver *)&intel_915_driver },
+ { PCI_DEVICE_ID_INTEL_82915GM_HB, PCI_DEVICE_ID_INTEL_82915GM_IG, "915GM",
+ (struct agp_bridge_driver *)&intel_845_driver,
+ (struct agp_bridge_driver *)&intel_915_driver },
+ { PCI_DEVICE_ID_INTEL_82945G_HB, PCI_DEVICE_ID_INTEL_82945G_IG, "945G",
+ (struct agp_bridge_driver *)&intel_845_driver,
+ (struct agp_bridge_driver *)&intel_915_driver },
+ { PCI_DEVICE_ID_INTEL_82945GM_HB, PCI_DEVICE_ID_INTEL_82945GM_IG, "945GM",
+ (struct agp_bridge_driver *)&intel_845_driver,
+ (struct agp_bridge_driver *)&intel_915_driver },
+ { PCI_DEVICE_ID_INTEL_82946GZ_HB, PCI_DEVICE_ID_INTEL_82946GZ_IG, "946GZ",
+ (struct agp_bridge_driver *)&intel_845_driver,
+ (struct agp_bridge_driver *)&intel_i965_driver },
+ { PCI_DEVICE_ID_INTEL_82965G_1_HB, PCI_DEVICE_ID_INTEL_82965G_1_IG, "965G",
+ (struct agp_bridge_driver *)&intel_845_driver,
+ (struct agp_bridge_driver *)&intel_i965_driver },
+ { PCI_DEVICE_ID_INTEL_82965Q_HB, PCI_DEVICE_ID_INTEL_82965Q_IG, "965Q",
+ (struct agp_bridge_driver *)&intel_845_driver,
+ (struct agp_bridge_driver *)&intel_i965_driver },
+ { PCI_DEVICE_ID_INTEL_82965G_HB, PCI_DEVICE_ID_INTEL_82965G_IG, "965G",
+ (struct agp_bridge_driver *)&intel_845_driver,
+ (struct agp_bridge_driver *)&intel_i965_driver },
+ { PCI_DEVICE_ID_INTEL_82965GM_HB, PCI_DEVICE_ID_INTEL_82965GM_IG, "965GM",
+ (struct agp_bridge_driver *)&intel_845_driver,
+ (struct agp_bridge_driver *)&intel_i965_driver },
+ { PCI_DEVICE_ID_INTEL_7505_0, 0, "E7505",
+ (struct agp_bridge_driver *)&intel_7505_driver, NULL },
+ { PCI_DEVICE_ID_INTEL_7205_0, 0, "E7205",
+ (struct agp_bridge_driver *)&intel_7505_driver, NULL },
+ { 0, 0, NULL, NULL, NULL }
+};
+
static int __devinit agp_intel_probe(struct pci_dev *pdev,
const struct pci_device_id *ent)
{
struct agp_bridge_data *bridge;
- char *name = "(unknown)";
u8 cap_ptr = 0;
struct resource *r;
+ int i;
cap_ptr = pci_find_capability(pdev, PCI_CAP_ID_AGP);
@@ -1759,191 +1837,39 @@ static int __devinit agp_intel_probe(struct pci_dev *pdev,
if (!bridge)
return -ENOMEM;
- switch (pdev->device) {
- case PCI_DEVICE_ID_INTEL_82443LX_0:
- bridge->driver = &intel_generic_driver;
- name = "440LX";
- break;
- case PCI_DEVICE_ID_INTEL_82443BX_0:
- bridge->driver = &intel_generic_driver;
- name = "440BX";
- break;
- case PCI_DEVICE_ID_INTEL_82443GX_0:
- bridge->driver = &intel_generic_driver;
- name = "440GX";
- break;
- case PCI_DEVICE_ID_INTEL_82810_MC1:
- name = "i810";
- if (!find_i810(PCI_DEVICE_ID_INTEL_82810_IG1))
- goto fail;
- bridge->driver = &intel_810_driver;
- break;
- case PCI_DEVICE_ID_INTEL_82810_MC3:
- name = "i810 DC100";
- if (!find_i810(PCI_DEVICE_ID_INTEL_82810_IG3))
- goto fail;
- bridge->driver = &intel_810_driver;
- break;
- case PCI_DEVICE_ID_INTEL_82810E_MC:
- name = "i810 E";
- if (!find_i810(PCI_DEVICE_ID_INTEL_82810E_IG))
- goto fail;
- bridge->driver = &intel_810_driver;
- break;
- case PCI_DEVICE_ID_INTEL_82815_MC:
- /*
- * The i815 can operate either as an i810 style
- * integrated device, or as an AGP4X motherboard.
- */
- if (find_i810(PCI_DEVICE_ID_INTEL_82815_CGC))
- bridge->driver = &intel_810_driver;
- else
- bridge->driver = &intel_815_driver;
- name = "i815";
- break;
- case PCI_DEVICE_ID_INTEL_82820_HB:
- case PCI_DEVICE_ID_INTEL_82820_UP_HB:
- bridge->driver = &intel_820_driver;
- name = "i820";
- break;
- case PCI_DEVICE_ID_INTEL_82830_HB:
- if (find_i830(PCI_DEVICE_ID_INTEL_82830_CGC))
- bridge->driver = &intel_830_driver;
- else
- bridge->driver = &intel_830mp_driver;
- name = "830M";
- break;
- case PCI_DEVICE_ID_INTEL_82840_HB:
- bridge->driver = &intel_840_driver;
- name = "i840";
- break;
- case PCI_DEVICE_ID_INTEL_82845_HB:
- bridge->driver = &intel_845_driver;
- name = "i845";
- break;
- case PCI_DEVICE_ID_INTEL_82845G_HB:
- if (find_i830(PCI_DEVICE_ID_INTEL_82845G_IG))
- bridge->driver = &intel_830_driver;
- else
- bridge->driver = &intel_845_driver;
- name = "845G";
- break;
- case PCI_DEVICE_ID_INTEL_82850_HB:
- bridge->driver = &intel_850_driver;
- name = "i850";
- break;
- case PCI_DEVICE_ID_INTEL_82855PM_HB:
- bridge->driver = &intel_845_driver;
- name = "855PM";
- break;
- case PCI_DEVICE_ID_INTEL_82855GM_HB:
- if (find_i830(PCI_DEVICE_ID_INTEL_82855GM_IG)) {
- bridge->driver = &intel_830_driver;
- name = "855";
- } else {
- bridge->driver = &intel_845_driver;
- name = "855GM";
- }
- break;
- case PCI_DEVICE_ID_INTEL_82860_HB:
- bridge->driver = &intel_860_driver;
- name = "i860";
- break;
- case PCI_DEVICE_ID_INTEL_82865_HB:
- if (find_i830(PCI_DEVICE_ID_INTEL_82865_IG))
- bridge->driver = &intel_830_driver;
- else
- bridge->driver = &intel_845_driver;
- name = "865";
- break;
- case PCI_DEVICE_ID_INTEL_82875_HB:
- bridge->driver = &intel_845_driver;
- name = "i875";
- break;
- case PCI_DEVICE_ID_INTEL_82915G_HB:
- if (find_i830(PCI_DEVICE_ID_INTEL_82915G_IG))
- bridge->driver = &intel_915_driver;
- else
- bridge->driver = &intel_845_driver;
- name = "915G";
- break;
- case PCI_DEVICE_ID_INTEL_82915GM_HB:
- if (find_i830(PCI_DEVICE_ID_INTEL_82915GM_IG))
- bridge->driver = &intel_915_driver;
- else
- bridge->driver = &intel_845_driver;
- name = "915GM";
- break;
- case PCI_DEVICE_ID_INTEL_82945G_HB:
- if (find_i830(PCI_DEVICE_ID_INTEL_82945G_IG))
- bridge->driver = &intel_915_driver;
- else
- bridge->driver = &intel_845_driver;
- name = "945G";
- break;
- case PCI_DEVICE_ID_INTEL_82945GM_HB:
- if (find_i830(PCI_DEVICE_ID_INTEL_82945GM_IG))
- bridge->driver = &intel_915_driver;
- else
- bridge->driver = &intel_845_driver;
- name = "945GM";
- break;
- case PCI_DEVICE_ID_INTEL_82946GZ_HB:
- if (find_i830(PCI_DEVICE_ID_INTEL_82946GZ_IG))
- bridge->driver = &intel_i965_driver;
- else
- bridge->driver = &intel_845_driver;
- name = "946GZ";
- break;
- case PCI_DEVICE_ID_INTEL_82965G_1_HB:
- if (find_i830(PCI_DEVICE_ID_INTEL_82965G_1_IG))
- bridge->driver = &intel_i965_driver;
- else
- bridge->driver = &intel_845_driver;
- name = "965G";
- break;
- case PCI_DEVICE_ID_INTEL_82965Q_HB:
- if (find_i830(PCI_DEVICE_ID_INTEL_82965Q_IG))
- bridge->driver = &intel_i965_driver;
- else
- bridge->driver = &intel_845_driver;
- name = "965Q";
- break;
- case PCI_DEVICE_ID_INTEL_82965G_HB:
- if (find_i830(PCI_DEVICE_ID_INTEL_82965G_IG))
- bridge->driver = &intel_i965_driver;
- else
- bridge->driver = &intel_845_driver;
- name = "965G";
- break;
- case PCI_DEVICE_ID_INTEL_82965GM_HB:
- if (find_i830(PCI_DEVICE_ID_INTEL_82965GM_IG))
- bridge->driver = &intel_i965_driver;
- else
- bridge->driver = &intel_845_driver;
- name = "965GM";
- break;
- case PCI_DEVICE_ID_INTEL_7505_0:
- bridge->driver = &intel_7505_driver;
- name = "E7505";
- break;
- case PCI_DEVICE_ID_INTEL_7205_0:
- bridge->driver = &intel_7505_driver;
- name = "E7205";
- break;
- default:
+ for (i = 0; intel_agp_chipsets[i].name != NULL; i++) {
+ if (pdev->device == intel_agp_chipsets[i].chip_id)
+ break;
+ }
+
+ if (intel_agp_chipsets[i].name == NULL) {
if (cap_ptr)
- printk(KERN_WARNING PFX "Unsupported Intel chipset (device id: %04x)\n",
- pdev->device);
+ printk(KERN_WARNING PFX "Unsupported Intel chipset"
+ "(device id: %04x)\n", pdev->device);
agp_put_bridge(bridge);
return -ENODEV;
- };
+ }
+
+ if (intel_agp_chipsets[i].gmch_chip_id != 0 &&
+ find_gmch(intel_agp_chipsets[i].gmch_chip_id)) {
+ bridge->driver = intel_agp_chipsets[i].gmch_driver;
+ } else {
+ bridge->driver = intel_agp_chipsets[i].driver;
+ }
+
+ if (bridge->driver == NULL) {
+ printk(KERN_WARNING PFX "Failed to find bridge device "
+ "(chip_id: %04x)\n", intel_agp_chipsets[i].gmch_chip_id);
+ agp_put_bridge(bridge);
+ return -ENODEV;
+ }
bridge->dev = pdev;
bridge->capndx = cap_ptr;
bridge->dev_private_data = &intel_private;
- printk(KERN_INFO PFX "Detected an Intel %s Chipset.\n", name);
+ printk(KERN_INFO PFX "Detected an Intel %s Chipset.\n",
+ intel_agp_chipsets[i].name);
/*
* The following fixes the case where the BIOS has "forgotten" to
@@ -1979,12 +1905,6 @@ static int __devinit agp_intel_probe(struct pci_dev *pdev,
pci_set_drvdata(pdev, bridge);
return agp_add_bridge(bridge);
-
-fail:
- printk(KERN_ERR PFX "Detected an Intel %s chipset, "
- "but could not find the secondary device.\n", name);
- agp_put_bridge(bridge);
- return -ENODEV;
}
static void __devexit agp_intel_remove(struct pci_dev *pdev)
--
1.4.4.4
On Tue, May 29, 2007 at 02:21:25PM +0800, Wang Zhenyu wrote:
> +static const struct intel_driver_description {
> + unsigned int chip_id;
> + unsigned int gmch_chip_id;
> + char *name;
> + struct agp_bridge_driver *driver;
> + struct agp_bridge_driver *gmch_driver;
The two should be const to avoid the silly casts below.
> + for (i = 0; intel_agp_chipsets[i].name != NULL; i++) {
> + if (pdev->device == intel_agp_chipsets[i].chip_id)
> + break;
please use tabs for indentation.
On 2007.05.29 10:18:48 +0000, Christoph Hellwig wrote:
> On Tue, May 29, 2007 at 02:21:25PM +0800, Wang Zhenyu wrote:
> > +static const struct intel_driver_description {
> > + unsigned int chip_id;
> > + unsigned int gmch_chip_id;
> > + char *name;
> > + struct agp_bridge_driver *driver;
> > + struct agp_bridge_driver *gmch_driver;
>
> The two should be const to avoid the silly casts below.
>
> > + for (i = 0; intel_agp_chipsets[i].name != NULL; i++) {
> > + if (pdev->device == intel_agp_chipsets[i].chip_id)
> > + break;
>
> please use tabs for indentation.
>
I'll fix those problems in next submit, thank you for review.