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habanalabs: make last_mask an MMU property 

Currently LAST_MASK is a global, but really it is an MMU implementation
specific. We need this change for future ASICs.

Signed-off-by: Yuri Nudelman <ynudelman@habana.ai>
Reviewed-by: Oded Gabbay <ogabbay@kernel.org>
Signed-off-by: Oded Gabbay <ogabbay@kernel.org>
This commit is contained in:
Yuri Nudelman 2021-10-21 15:08:51 +03:00 committed by Oded Gabbay
parent f06bad02b5
commit 89d6decdb7
4 changed files with 10 additions and 5 deletions
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2
drivers/misc/habanalabs/common/habanalabs.h
View File

@ -382,6 +382,7 @@ enum hl_device_hw_state {
* @hop3_mask: mask to get the PTE address in hop 3.
* @hop4_mask: mask to get the PTE address in hop 4.
* @hop5_mask: mask to get the PTE address in hop 5.
* @last_mask: mask to get the bit indicating this is the last hop.
* @page_size: default page size used to allocate memory.
* @num_hops: The amount of hops supported by the translation table.
* @host_resident: Should the MMU page table reside in host memory or in the
@ -402,6 +403,7 @@ struct hl_mmu_properties {
u64 hop3_mask;
u64 hop4_mask;
u64 hop5_mask;
u64 last_mask;
u32 page_size;
u32 num_hops;
u8 host_resident;

10
drivers/misc/habanalabs/common/mmu/mmu_v1.c
View File

@ -573,7 +573,7 @@ static int _hl_mmu_v1_unmap(struct hl_ctx *ctx,
curr_pte = *(u64 *) (uintptr_t) hop3_pte_addr;
is_huge = curr_pte & LAST_MASK;
is_huge = curr_pte & mmu_prop->last_mask;
if (is_dram_addr && !is_huge) {
dev_err(hdev->dev,
@ -597,7 +597,7 @@ static int _hl_mmu_v1_unmap(struct hl_ctx *ctx,
if (hdev->dram_default_page_mapping && is_dram_addr) {
u64 default_pte = (prop->mmu_dram_default_page_addr &
HOP_PHYS_ADDR_MASK) | LAST_MASK |
HOP_PHYS_ADDR_MASK) | mmu_prop->last_mask |
PAGE_PRESENT_MASK;
if (curr_pte == default_pte) {
dev_err(hdev->dev,
@ -729,7 +729,7 @@ static int _hl_mmu_v1_map(struct hl_ctx *ctx, u64 virt_addr, u64 phys_addr,
if (hdev->dram_default_page_mapping && is_dram_addr) {
u64 default_pte = (prop->mmu_dram_default_page_addr &
HOP_PHYS_ADDR_MASK) | LAST_MASK |
HOP_PHYS_ADDR_MASK) | mmu_prop->last_mask |
PAGE_PRESENT_MASK;
if (curr_pte != default_pte) {
@ -769,7 +769,7 @@ static int _hl_mmu_v1_map(struct hl_ctx *ctx, u64 virt_addr, u64 phys_addr,
goto err;
}
curr_pte = (phys_addr & HOP_PHYS_ADDR_MASK) | LAST_MASK
curr_pte = (phys_addr & HOP_PHYS_ADDR_MASK) | mmu_prop->last_mask
| PAGE_PRESENT_MASK;
if (is_huge)
@ -930,7 +930,7 @@ static int hl_mmu_v1_get_tlb_info(struct hl_ctx *ctx, u64 virt_addr,
if (!(hops->hop_info[i].hop_pte_val & PAGE_PRESENT_MASK))
return -EFAULT;
if (hops->hop_info[i].hop_pte_val & LAST_MASK)
if (hops->hop_info[i].hop_pte_val & mmu_prop->last_mask)
break;
}

1
drivers/misc/habanalabs/gaudi/gaudi.c
View File

@ -613,6 +613,7 @@ static int gaudi_set_fixed_properties(struct hl_device *hdev)
(VA_HOST_SPACE_START + VA_HOST_SPACE_SIZE / 2) - 1;
prop->pmmu.page_size = PAGE_SIZE_4KB;
prop->pmmu.num_hops = MMU_ARCH_5_HOPS;
prop->pmmu.last_mask = LAST_MASK;
/* PMMU and HPMMU are the same except of page size */
memcpy(&prop->pmmu_huge, &prop->pmmu, sizeof(prop->pmmu));

2
drivers/misc/habanalabs/goya/goya.c
View File

@ -429,6 +429,7 @@ int goya_set_fixed_properties(struct hl_device *hdev)
prop->dmmu.end_addr = VA_DDR_SPACE_END;
prop->dmmu.page_size = PAGE_SIZE_2MB;
prop->dmmu.num_hops = MMU_ARCH_5_HOPS;
prop->dmmu.last_mask = LAST_MASK;
/* shifts and masks are the same in PMMU and DMMU */
memcpy(&prop->pmmu, &prop->dmmu, sizeof(prop->dmmu));
@ -436,6 +437,7 @@ int goya_set_fixed_properties(struct hl_device *hdev)
prop->pmmu.end_addr = VA_HOST_SPACE_END;
prop->pmmu.page_size = PAGE_SIZE_4KB;
prop->pmmu.num_hops = MMU_ARCH_5_HOPS;
prop->pmmu.last_mask = LAST_MASK;
/* PMMU and HPMMU are the same except of page size */
memcpy(&prop->pmmu_huge, &prop->pmmu, sizeof(prop->pmmu));