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drm/i915/gvt: Fix firmware loading interface for GVT-g golden HW state

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Firmware loading interface for GVT-g golden HW state has been broken
before. This patch fixes GVT-g firmware loading interface. A user should
apply this patch if he wants to load GVT-g golden HW state from firmware
interface.

Fixes: 579cea5 ("drm/i915/gvt: golden virtual HW state management")
Cc: Zhenyu Wang <zhenyuw@linux.intel.com>
Cc: drm-intel-fixes@lists.freedesktop.org
Signed-off-by: Zhi Wang <zhi.a.wang@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
This commit is contained in:
Zhi Wang 2017-04-01 00:00:53 +08:00 committed by Zhenyu Wang
parent f857269057
commit aa4ce4493c
1 changed files with 6 additions and 3 deletions
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9
drivers/gpu/drm/i915/gvt/firmware.c
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@ -75,11 +75,11 @@ static int expose_firmware_sysfs(struct intel_gvt *gvt)
struct gvt_firmware_header *h;
void *firmware;
void *p;
unsigned long size;
unsigned long size, crc32_start;
int i;
int ret;
size = sizeof(*h) + info->mmio_size + info->cfg_space_size - 1;
size = sizeof(*h) + info->mmio_size + info->cfg_space_size;
firmware = vzalloc(size);
if (!firmware)
return -ENOMEM;
@ -112,6 +112,9 @@ static int expose_firmware_sysfs(struct intel_gvt *gvt)
memcpy(gvt->firmware.mmio, p, info->mmio_size);
crc32_start = offsetof(struct gvt_firmware_header, crc32) + 4;
h->crc32 = crc32_le(0, firmware + crc32_start, size - crc32_start);
firmware_attr.size = size;
firmware_attr.private = firmware;
@ -234,7 +237,7 @@ int intel_gvt_load_firmware(struct intel_gvt *gvt)
firmware->mmio = mem;
sprintf(path, "%s/vid_0x%04x_did_0x%04x_rid_0x%04x.golden_hw_state",
sprintf(path, "%s/vid_0x%04x_did_0x%04x_rid_0x%02x.golden_hw_state",
GVT_FIRMWARE_PATH, pdev->vendor, pdev->device,
pdev->revision);