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habanalabs: add debugfs support for MMU with 6 HOPs

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This commit modify the existing debugfs code to support future devices that
have a 6 HOPs MMU implementation instead of 5 HOPs implementation.

Signed-off-by: Moti Haimovski <mhaimovski@habana.ai>
Reviewed-by: Oded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
This commit is contained in:
Moti Haimovski 2020-08-13 16:54:50 +03:00 committed by Oded Gabbay
parent 7edf341b9e
commit 214afa974d
1 changed files with 60 additions and 10 deletions
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70
drivers/misc/habanalabs/common/debugfs.c
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@ -354,6 +354,14 @@ static inline u64 get_hop4_pte_addr(struct hl_ctx *ctx,
mmu_specs->hop4_shift);
}
static inline u64 get_hop5_pte_addr(struct hl_ctx *ctx,
struct hl_mmu_properties *mmu_specs,
u64 hop_addr, u64 vaddr)
{
return get_hopN_pte_addr(ctx, hop_addr, vaddr, mmu_specs->hop5_mask,
mmu_specs->hop5_shift);
}
static inline u64 get_next_hop_addr(u64 curr_pte)
{
if (curr_pte & PAGE_PRESENT_MASK)
@ -377,6 +385,7 @@ static int mmu_show(struct seq_file *s, void *data)
hop2_addr = 0, hop2_pte_addr = 0, hop2_pte = 0,
hop3_addr = 0, hop3_pte_addr = 0, hop3_pte = 0,
hop4_addr = 0, hop4_pte_addr = 0, hop4_pte = 0,
hop5_addr = 0, hop5_pte_addr = 0, hop5_pte = 0,
virt_addr = dev_entry->mmu_addr;
if (!hdev->mmu_enable)
@ -428,20 +437,49 @@ static int mmu_show(struct seq_file *s, void *data)
hop3_pte_addr = get_hop3_pte_addr(ctx, mmu_prop, hop3_addr, virt_addr);
hop3_pte = hdev->asic_funcs->read_pte(hdev, hop3_pte_addr);
if (!(hop3_pte & LAST_MASK)) {
if (mmu_prop->num_hops == MMU_ARCH_5_HOPS) {
if (!(hop3_pte & LAST_MASK)) {
hop4_addr = get_next_hop_addr(hop3_pte);
if (hop4_addr == ULLONG_MAX)
goto not_mapped;
hop4_pte_addr = get_hop4_pte_addr(ctx, mmu_prop,
hop4_addr, virt_addr);
hop4_pte = hdev->asic_funcs->read_pte(hdev,
hop4_pte_addr);
if (!(hop4_pte & PAGE_PRESENT_MASK))
goto not_mapped;
} else {
if (!(hop3_pte & PAGE_PRESENT_MASK))
goto not_mapped;
}
} else {
hop4_addr = get_next_hop_addr(hop3_pte);
if (hop4_addr == ULLONG_MAX)
goto not_mapped;
hop4_pte_addr = get_hop4_pte_addr(ctx, mmu_prop, hop4_addr,
virt_addr);
hop4_pte = hdev->asic_funcs->read_pte(hdev, hop4_pte_addr);
if (!(hop4_pte & PAGE_PRESENT_MASK))
goto not_mapped;
} else {
if (!(hop3_pte & PAGE_PRESENT_MASK))
goto not_mapped;
hop4_pte_addr = get_hop4_pte_addr(ctx, mmu_prop,
hop4_addr, virt_addr);
hop4_pte = hdev->asic_funcs->read_pte(hdev,
hop4_pte_addr);
if (!(hop4_pte & LAST_MASK)) {
hop5_addr = get_next_hop_addr(hop4_pte);
if (hop5_addr == ULLONG_MAX)
goto not_mapped;
hop5_pte_addr = get_hop5_pte_addr(ctx, mmu_prop,
hop5_addr, virt_addr);
hop5_pte = hdev->asic_funcs->read_pte(hdev,
hop5_pte_addr);
if (!(hop5_pte & PAGE_PRESENT_MASK))
goto not_mapped;
} else {
if (!(hop4_pte & PAGE_PRESENT_MASK))
goto not_mapped;
}
}
seq_printf(s, "asid: %u, virt_addr: 0x%llx\n",
@ -463,10 +501,22 @@ static int mmu_show(struct seq_file *s, void *data)
seq_printf(s, "hop3_pte_addr: 0x%llx\n", hop3_pte_addr);
seq_printf(s, "hop3_pte: 0x%llx\n", hop3_pte);
if (!(hop3_pte & LAST_MASK)) {
if (mmu_prop->num_hops == MMU_ARCH_5_HOPS) {
if (!(hop3_pte & LAST_MASK)) {
seq_printf(s, "hop4_addr: 0x%llx\n", hop4_addr);
seq_printf(s, "hop4_pte_addr: 0x%llx\n", hop4_pte_addr);
seq_printf(s, "hop4_pte: 0x%llx\n", hop4_pte);
}
} else {
seq_printf(s, "hop4_addr: 0x%llx\n", hop4_addr);
seq_printf(s, "hop4_pte_addr: 0x%llx\n", hop4_pte_addr);
seq_printf(s, "hop4_pte: 0x%llx\n", hop4_pte);
if (!(hop4_pte & LAST_MASK)) {
seq_printf(s, "hop5_addr: 0x%llx\n", hop5_addr);
seq_printf(s, "hop5_pte_addr: 0x%llx\n", hop5_pte_addr);
seq_printf(s, "hop5_pte: 0x%llx\n", hop5_pte);
}
}
goto out;