diff options
| author | Piotr Piórkowski <piotr.piorkowski@intel.com> | 2022-08-05 17:59:59 +0200 |
|---|---|---|
| committer | Jani Nikula <jani.nikula@intel.com> | 2022-08-10 13:11:17 +0300 |
| commit | 1bba7323c79b169d855ecb4a1eba410f18a38674 (patch) | |
| tree | 7e3f2175753acb1ec2923b68490b140c0c13fe43 /drivers/gpu/drm/i915/i915_pci.h | |
| parent | 6bba2b30d29cbba78ba0f935210108e74dbe7ab3 (diff) | |
drm/i915: Sanitycheck PCI BARs
For proper operation of i915 we need usable PCI GTTMMADDR BAR 0
(1 for GEN2). In most cases we also need usable PCI GFXMEM BAR 2.
Let's add functions to check if BARs are set, and that it have
a size greater than 0.
In case GTTMMADDR BAR, let's validate at the beginning of i915
initialization.
For other BARs, let's validate before first use.
Signed-off-by: Piotr Piórkowski <piotr.piorkowski@intel.com>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: Lucas De Marchi <lucas.demarchi@intel.com>
Cc: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220805155959.1983584-3-piotr.piorkowski@intel.com
Diffstat (limited to 'drivers/gpu/drm/i915/i915_pci.h')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_pci.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_pci.h b/drivers/gpu/drm/i915/i915_pci.h index ee048c238174..8dfe19f9a775 100644 --- a/drivers/gpu/drm/i915/i915_pci.h +++ b/drivers/gpu/drm/i915/i915_pci.h @@ -6,7 +6,13 @@ #ifndef __I915_PCI_H__ #define __I915_PCI_H__ +#include <linux/types.h> + +struct pci_dev; + int i915_pci_register_driver(void); void i915_pci_unregister_driver(void); +bool i915_pci_resource_valid(struct pci_dev *pdev, int bar); + #endif /* __I915_PCI_H__ */ |