diff options
| author | Changbin Du <changbin.du@intel.com> | 2017-10-23 11:46:43 +0800 |
|---|---|---|
| committer | Zhenyu Wang <zhenyuw@linux.intel.com> | 2017-11-16 11:48:32 +0800 |
| commit | 7cb16018f5b4f04bc58a8752bfd11067bafeb552 (patch) | |
| tree | 1fcdc5ce418464bdeed2e6f8f94d1822ee46019b /drivers/gpu/drm/i915/gvt/firmware.c | |
| parent | 4023f301d28fb18aac225fef59592a44b9fd42b3 (diff) | |
| download | linux-7cb16018f5b4f04bc58a8752bfd11067bafeb552.tar.gz linux-7cb16018f5b4f04bc58a8752bfd11067bafeb552.tar.bz2 linux-7cb16018f5b4f04bc58a8752bfd11067bafeb552.zip | |
drm/i915/gvt: Add mmio iterator intel_gvt_for_each_tracked_mmio()
This patch add a function intel_gvt_for_each_tracked_mmio() to
iterate each tracked mmio. The caller don't be aware of how the
tracked mmios are presented internally.
v2: remove snapshot_hw_mmio_registers().
Signed-off-by: Changbin Du <changbin.du@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Diffstat (limited to 'drivers/gpu/drm/i915/gvt/firmware.c')
| -rw-r--r-- | drivers/gpu/drm/i915/gvt/firmware.c | 26 |
1 files changed, 11 insertions, 15 deletions
diff --git a/drivers/gpu/drm/i915/gvt/firmware.c b/drivers/gpu/drm/i915/gvt/firmware.c index a26c1705430e..a73e1d418c22 100644 --- a/drivers/gpu/drm/i915/gvt/firmware.c +++ b/drivers/gpu/drm/i915/gvt/firmware.c @@ -66,20 +66,23 @@ static struct bin_attribute firmware_attr = { .mmap = NULL, }; -static int expose_firmware_sysfs(struct intel_gvt *gvt) +static int mmio_snapshot_handler(struct intel_gvt *gvt, u32 offset, void *data) { struct drm_i915_private *dev_priv = gvt->dev_priv; + + *(u32 *)(data + offset) = I915_READ_NOTRACE(_MMIO(offset)); + return 0; +} + +static int expose_firmware_sysfs(struct intel_gvt *gvt) +{ struct intel_gvt_device_info *info = &gvt->device_info; struct pci_dev *pdev = gvt->dev_priv->drm.pdev; - struct intel_gvt_mmio_info *e; - struct gvt_mmio_block *block = gvt->mmio.mmio_block; - int num = gvt->mmio.num_mmio_block; struct gvt_firmware_header *h; void *firmware; void *p; unsigned long size, crc32_start; - int i, j; - int ret; + int i, ret; size = sizeof(*h) + info->mmio_size + info->cfg_space_size; firmware = vzalloc(size); @@ -104,15 +107,8 @@ static int expose_firmware_sysfs(struct intel_gvt *gvt) p = firmware + h->mmio_offset; - hash_for_each(gvt->mmio.mmio_info_table, i, e, node) - *(u32 *)(p + e->offset) = I915_READ_NOTRACE(_MMIO(e->offset)); - - for (i = 0; i < num; i++, block++) { - for (j = 0; j < block->size; j += 4) - *(u32 *)(p + INTEL_GVT_MMIO_OFFSET(block->offset) + j) = - I915_READ_NOTRACE(_MMIO(INTEL_GVT_MMIO_OFFSET( - block->offset) + j)); - } + /* Take a snapshot of hw mmio registers. */ + intel_gvt_for_each_tracked_mmio(gvt, mmio_snapshot_handler, p); memcpy(gvt->firmware.mmio, p, info->mmio_size); |