iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

octeontx2-pf: cn10k: Ensure valid pointers are freed to aura

Browse Source 
[ Upstream commit c5d731c54a17677939bd59ee8be4ed74d7485ba4 ]

While freeing SQB pointers to aura, driver first memcpy to
target address and then triggers lmtst operation to free pointer
to the aura. We need to ensure(by adding dmb barrier)that memcpy
is finished before pointers are freed to the aura. This patch also
adds the missing sq context structure entry in debugfs.

Fixes: ef6c8da71eaf ("octeontx2-pf: cn10K: Reserve LMTST lines per core")
Signed-off-by: Geetha sowjanya <gakula@marvell.com>
Signed-off-by: Subbaraya Sundeep <sbhatta@marvell.com>
Signed-off-by: Sunil Goutham <sgoutham@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Geetha sowjanya 2022-01-21 12:04:43 +05:30 committed by Greg Kroah-Hartman
parent a332a1050a
commit 4070cf004d
2 changed files with 3 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/net/ethernet/marvell/octeontx2/af/rvu_debugfs.c
View File

@ -1131,6 +1131,8 @@ static void print_nix_cn10k_sq_ctx(struct seq_file *m,
seq_printf(m, "W3: head_offset\t\t\t%d\nW3: smenq_next_sqb_vld\t\t%d\n\n",
sq_ctx->head_offset, sq_ctx->smenq_next_sqb_vld);
seq_printf(m, "W3: smq_next_sq_vld\t\t%d\nW3: smq_pend\t\t\t%d\n",
sq_ctx->smq_next_sq_vld, sq_ctx->smq_pend);
seq_printf(m, "W4: next_sqb \t\t\t%llx\n\n", sq_ctx->next_sqb);
seq_printf(m, "W5: tail_sqb \t\t\t%llx\n\n", sq_ctx->tail_sqb);
seq_printf(m, "W6: smenq_sqb \t\t\t%llx\n\n", sq_ctx->smenq_sqb);

1
drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.h
View File

@ -591,6 +591,7 @@ static inline void __cn10k_aura_freeptr(struct otx2_nic *pfvf, u64 aura,
size++;
tar_addr |= ((size - 1) & 0x7) << 4;
}
dma_wmb();
memcpy((u64 *)lmt_info->lmt_addr, ptrs, sizeof(u64) * num_ptrs);
/* Perform LMTST flush */
cn10k_lmt_flush(val, tar_addr);