6.1-stable review patch. If anyone has any objections, please let me know.
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From: Geetha sowjanya gakula@marvell.com
[ Upstream commit a6ae7129819ad20788e610261246e71736543b8b ]
The current implementation maps the APR table using a fixed size, which can lead to incorrect mapping when the number of PFs and VFs varies. This patch corrects the mapping by calculating the APR table size dynamically based on the values configured in the APR_LMT_CFG register, ensuring accurate representation of APR entries in debugfs.
Fixes: 0daa55d033b0 ("octeontx2-af: cn10k: debugfs for dumping LMTST map table"). Signed-off-by: Geetha sowjanya gakula@marvell.com Link: https://patch.msgid.link/20250521060834.19780-3-gakula@marvell.com Signed-off-by: Paolo Abeni pabeni@redhat.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/ethernet/marvell/octeontx2/af/rvu_cn10k.c | 9 ++++++--- .../net/ethernet/marvell/octeontx2/af/rvu_debugfs.c | 11 ++++++++--- 2 files changed, 14 insertions(+), 6 deletions(-)
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_cn10k.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_cn10k.c index 6ec0609074dca..5cd45846237e2 100644 --- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_cn10k.c +++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_cn10k.c @@ -13,7 +13,6 @@ /* RVU LMTST */ #define LMT_TBL_OP_READ 0 #define LMT_TBL_OP_WRITE 1 -#define LMT_MAP_TABLE_SIZE (128 * 1024) #define LMT_MAPTBL_ENTRY_SIZE 16 #define LMT_MAX_VFS 256
@@ -26,10 +25,14 @@ static int lmtst_map_table_ops(struct rvu *rvu, u32 index, u64 *val, { void __iomem *lmt_map_base; u64 tbl_base, cfg; + int pfs, vfs;
tbl_base = rvu_read64(rvu, BLKADDR_APR, APR_AF_LMT_MAP_BASE); + cfg = rvu_read64(rvu, BLKADDR_APR, APR_AF_LMT_CFG); + vfs = 1 << (cfg & 0xF); + pfs = 1 << ((cfg >> 4) & 0x7);
- lmt_map_base = ioremap_wc(tbl_base, LMT_MAP_TABLE_SIZE); + lmt_map_base = ioremap_wc(tbl_base, pfs * vfs * LMT_MAPTBL_ENTRY_SIZE); if (!lmt_map_base) { dev_err(rvu->dev, "Failed to setup lmt map table mapping!!\n"); return -ENOMEM; @@ -80,7 +83,7 @@ static int rvu_get_lmtaddr(struct rvu *rvu, u16 pcifunc,
mutex_lock(&rvu->rsrc_lock); rvu_write64(rvu, BLKADDR_RVUM, RVU_AF_SMMU_ADDR_REQ, iova); - pf = rvu_get_pf(pcifunc) & 0x1F; + pf = rvu_get_pf(pcifunc) & RVU_PFVF_PF_MASK; val = BIT_ULL(63) | BIT_ULL(14) | BIT_ULL(13) | pf << 8 | ((pcifunc & RVU_PFVF_FUNC_MASK) & 0xFF); rvu_write64(rvu, BLKADDR_RVUM, RVU_AF_SMMU_TXN_REQ, val); diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_debugfs.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_debugfs.c index a3c1d82032f55..aa2ab987eb752 100644 --- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_debugfs.c +++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_debugfs.c @@ -580,6 +580,7 @@ static ssize_t rvu_dbg_lmtst_map_table_display(struct file *filp, u64 lmt_addr, val, tbl_base; int pf, vf, num_vfs, hw_vfs; void __iomem *lmt_map_base; + int apr_pfs, apr_vfs; int buf_size = 10240; size_t off = 0; int index = 0; @@ -595,8 +596,12 @@ static ssize_t rvu_dbg_lmtst_map_table_display(struct file *filp, return -ENOMEM;
tbl_base = rvu_read64(rvu, BLKADDR_APR, APR_AF_LMT_MAP_BASE); + val = rvu_read64(rvu, BLKADDR_APR, APR_AF_LMT_CFG); + apr_vfs = 1 << (val & 0xF); + apr_pfs = 1 << ((val >> 4) & 0x7);
- lmt_map_base = ioremap_wc(tbl_base, 128 * 1024); + lmt_map_base = ioremap_wc(tbl_base, apr_pfs * apr_vfs * + LMT_MAPTBL_ENTRY_SIZE); if (!lmt_map_base) { dev_err(rvu->dev, "Failed to setup lmt map table mapping!!\n"); kfree(buf); @@ -618,7 +623,7 @@ static ssize_t rvu_dbg_lmtst_map_table_display(struct file *filp, off += scnprintf(&buf[off], buf_size - 1 - off, "PF%d \t\t\t", pf);
- index = pf * rvu->hw->total_vfs * LMT_MAPTBL_ENTRY_SIZE; + index = pf * apr_vfs * LMT_MAPTBL_ENTRY_SIZE; off += scnprintf(&buf[off], buf_size - 1 - off, " 0x%llx\t\t", (tbl_base + index)); lmt_addr = readq(lmt_map_base + index); @@ -631,7 +636,7 @@ static ssize_t rvu_dbg_lmtst_map_table_display(struct file *filp, /* Reading num of VFs per PF */ rvu_get_pf_numvfs(rvu, pf, &num_vfs, &hw_vfs); for (vf = 0; vf < num_vfs; vf++) { - index = (pf * rvu->hw->total_vfs * 16) + + index = (pf * apr_vfs * LMT_MAPTBL_ENTRY_SIZE) + ((vf + 1) * LMT_MAPTBL_ENTRY_SIZE); off += scnprintf(&buf[off], buf_size - 1 - off, "PF%d:VF%d \t\t", pf, vf);