diff options
| author | Omer Shpigelman <oshpigelman@habana.ai> | 2019-11-14 18:23:53 +0000 |
|---|---|---|
| committer | Oded Gabbay <oded.gabbay@gmail.com> | 2019-11-21 11:35:46 +0200 |
| commit | 7b6e4ea0f7b16ab292df5e67f5d847929f8e4d3e (patch) | |
| tree | 8867f48c8af965586d923b5993c9d78fc42e31ec /drivers/misc/habanalabs | |
| parent | 7f74d4d335f1bdcb51fca584d5ad065c4ff996ac (diff) | |
| download | linux-7b6e4ea0f7b16ab292df5e67f5d847929f8e4d3e.tar.bz2 | |
habanalabs: type specific MMU cache invalidation
Add the ability to invalidate the necessary MMU cache only.
This ability is a prerequisite for future ASICs support.
Note that in Goya ASIC, a single cache is used for both host/DRAM
mappings and hence this patch should not have any effect on current
behavior.
Signed-off-by: Omer Shpigelman <oshpigelman@habana.ai>
Reviewed-by: Oded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
Diffstat (limited to 'drivers/misc/habanalabs')
| -rw-r--r-- | drivers/misc/habanalabs/goya/goya.c | 6 | ||||
| -rw-r--r-- | drivers/misc/habanalabs/habanalabs.h | 11 | ||||
| -rw-r--r-- | drivers/misc/habanalabs/memory.c | 4 |
3 files changed, 12 insertions, 9 deletions
diff --git a/drivers/misc/habanalabs/goya/goya.c b/drivers/misc/habanalabs/goya/goya.c index 9712122d6cb1..3c22fb96a26f 100644 --- a/drivers/misc/habanalabs/goya/goya.c +++ b/drivers/misc/habanalabs/goya/goya.c @@ -2463,7 +2463,8 @@ int goya_mmu_init(struct hl_device *hdev) WREG32_AND(mmSTLB_STLB_FEATURE_EN, (~STLB_STLB_FEATURE_EN_FOLLOWER_EN_MASK)); - hdev->asic_funcs->mmu_invalidate_cache(hdev, true); + hdev->asic_funcs->mmu_invalidate_cache(hdev, true, + VM_TYPE_USERPTR | VM_TYPE_PHYS_PACK); WREG32(mmMMU_MMU_ENABLE, 1); WREG32(mmMMU_SPI_MASK, 0xF); @@ -4845,7 +4846,8 @@ static void goya_mmu_prepare(struct hl_device *hdev, u32 asid) goya_mmu_prepare_reg(hdev, goya_mmu_regs[i], asid); } -static void goya_mmu_invalidate_cache(struct hl_device *hdev, bool is_hard) +static void goya_mmu_invalidate_cache(struct hl_device *hdev, bool is_hard, + u32 flags) { struct goya_device *goya = hdev->asic_specific; u32 status, timeout_usec; diff --git a/drivers/misc/habanalabs/habanalabs.h b/drivers/misc/habanalabs/habanalabs.h index 78aef59e690b..36d05c32f7ec 100644 --- a/drivers/misc/habanalabs/habanalabs.h +++ b/drivers/misc/habanalabs/habanalabs.h @@ -114,8 +114,8 @@ struct hw_queue_properties { * @VM_TYPE_PHYS_PACK: mapping of DRAM memory to device virtual address. */ enum vm_type_t { - VM_TYPE_USERPTR, - VM_TYPE_PHYS_PACK + VM_TYPE_USERPTR = 0x1, + VM_TYPE_PHYS_PACK = 0x2 }; /** @@ -483,8 +483,8 @@ enum hl_pll_frequency { * @get_events_stat: retrieve event queue entries histogram. * @read_pte: read MMU page table entry from DRAM. * @write_pte: write MMU page table entry to DRAM. - * @mmu_invalidate_cache: flush MMU STLB cache, either with soft (L1 only) or - * hard (L0 & L1) flush. + * @mmu_invalidate_cache: flush MMU STLB host/DRAM cache, either with soft + * (L1 only) or hard (L0 & L1) flush. * @mmu_invalidate_cache_range: flush specific MMU STLB cache lines with * ASID-VA-size mask. * @send_heartbeat: send is-alive packet to ArmCP and verify response. @@ -565,7 +565,8 @@ struct hl_asic_funcs { u32 *size); u64 (*read_pte)(struct hl_device *hdev, u64 addr); void (*write_pte)(struct hl_device *hdev, u64 addr, u64 val); - void (*mmu_invalidate_cache)(struct hl_device *hdev, bool is_hard); + void (*mmu_invalidate_cache)(struct hl_device *hdev, bool is_hard, + u32 flags); void (*mmu_invalidate_cache_range)(struct hl_device *hdev, bool is_hard, u32 asid, u64 va, u64 size); int (*send_heartbeat)(struct hl_device *hdev); diff --git a/drivers/misc/habanalabs/memory.c b/drivers/misc/habanalabs/memory.c index 8ade9886a5a7..12db6609da27 100644 --- a/drivers/misc/habanalabs/memory.c +++ b/drivers/misc/habanalabs/memory.c @@ -944,7 +944,7 @@ static int map_device_va(struct hl_ctx *ctx, struct hl_mem_in *args, goto map_err; } - hdev->asic_funcs->mmu_invalidate_cache(hdev, false); + hdev->asic_funcs->mmu_invalidate_cache(hdev, false, *vm_type); mutex_unlock(&ctx->mmu_lock); @@ -1060,7 +1060,7 @@ static int unmap_device_va(struct hl_ctx *ctx, u64 vaddr) unmap_phys_pg_pack(ctx, vaddr, phys_pg_pack); - hdev->asic_funcs->mmu_invalidate_cache(hdev, true); + hdev->asic_funcs->mmu_invalidate_cache(hdev, true, *vm_type); mutex_unlock(&ctx->mmu_lock); |