diff options
| author | Changbin Du <changbin.du@intel.com> | 2017-10-23 06:46:43 +0300 |
|---|---|---|
| committer | Zhenyu Wang <zhenyuw@linux.intel.com> | 2017-11-16 06:48:32 +0300 |
| commit | 7cb16018f5b4f04bc58a8752bfd11067bafeb552 (patch) | |
| tree | 1fcdc5ce418464bdeed2e6f8f94d1822ee46019b /drivers/gpu/drm/i915/gvt/handlers.c | |
| parent | 4023f301d28fb18aac225fef59592a44b9fd42b3 (diff) | |
| download | linux-7cb16018f5b4f04bc58a8752bfd11067bafeb552.tar.xz | |
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/handlers.c')
| -rw-r--r-- | drivers/gpu/drm/i915/gvt/handlers.c | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/gvt/handlers.c b/drivers/gpu/drm/i915/gvt/handlers.c index 56ee588377f4..4f8d470dbb3f 100644 --- a/drivers/gpu/drm/i915/gvt/handlers.c +++ b/drivers/gpu/drm/i915/gvt/handlers.c @@ -2971,6 +2971,40 @@ err: return ret; } +/** + * intel_gvt_for_each_tracked_mmio - iterate each tracked mmio + * @gvt: a GVT device + * @handler: the handler + * @data: private data given to handler + * + * Returns: + * Zero on success, negative error code if failed. + */ +int intel_gvt_for_each_tracked_mmio(struct intel_gvt *gvt, + int (*handler)(struct intel_gvt *gvt, u32 offset, void *data), + void *data) +{ + struct gvt_mmio_block *block = gvt->mmio.mmio_block; + struct intel_gvt_mmio_info *e; + int i, j, ret; + + hash_for_each(gvt->mmio.mmio_info_table, i, e, node) { + ret = handler(gvt, e->offset, data); + if (ret) + return ret; + } + + for (i = 0; i < gvt->mmio.num_mmio_block; i++, block++) { + for (j = 0; j < block->size; j += 4) { + ret = handler(gvt, + INTEL_GVT_MMIO_OFFSET(block->offset) + j, + data); + if (ret) + return ret; + } + } + return 0; +} /** * intel_vgpu_default_mmio_read - default MMIO read handler |