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drm/i915/gvt: Add mmio iterator intel_gvt_for_each_tracked_mmio()

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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>
This commit is contained in:
Changbin Du
2017-10-23 11:46:43 +08:00
committed by Zhenyu Wang
parent 4023f301d2
commit 7cb16018f5
3 changed files with 49 additions and 15 deletions
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26
drivers/gpu/drm/i915/gvt/firmware.c
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@@ -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);