From: Hariprasad Shenai <hariprasad@chelsio.com>
To: netdev@vger.kernel.org
Cc: davem@davemloft.net, leedom@chelsio.com, kumaras@chelsio.com,
nirranjan@chelsio.com, santosh@chelsio.com, anish@chelsio.com,
Hariprasad Shenai <hariprasad@chelsio.com>
Subject: [PATCH net-next 4/4] cxgb4: Add support for mps_tcam debugfs
Date: Thu, 16 Oct 2014 06:52:04 +0530 [thread overview]
Message-ID: <1413422524-14054-5-git-send-email-hariprasad@chelsio.com> (raw)
In-Reply-To: <1413422524-14054-1-git-send-email-hariprasad@chelsio.com>
Debug log to get the MPS TCAM table
Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com>
---
drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c | 130 ++++++++++++++++++++
drivers/net/ethernet/chelsio/cxgb4/t4_regs.h | 16 +++
2 files changed, 146 insertions(+), 0 deletions(-)
diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c
index e8b84dc..7d114ed 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c
+++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c
@@ -435,6 +435,135 @@ static const struct file_operations devlog_fops = {
.release = seq_release_private
};
+static inline void tcamxy2valmask(u64 x, u64 y, u8 *addr, u64 *mask)
+{
+ *mask = x | y;
+ y = (__force u64)cpu_to_be64(y);
+ memcpy(addr, (char *)&y + 2, ETH_ALEN);
+}
+
+static int mps_tcam_show(struct seq_file *seq, void *v)
+{
+ if (v == SEQ_START_TOKEN)
+ seq_puts(seq, "Idx Ethernet address Mask Vld Ports PF"
+ " VF Replication P0 P1 P2 P3 ML\n");
+ else {
+ u64 mask;
+ u8 addr[ETH_ALEN];
+ struct adapter *adap = seq->private;
+ unsigned int idx = (uintptr_t)v - 2;
+ u64 tcamy = t4_read_reg64(adap, MPS_CLS_TCAM_Y_L(idx));
+ u64 tcamx = t4_read_reg64(adap, MPS_CLS_TCAM_X_L(idx));
+ u32 cls_lo = t4_read_reg(adap, MPS_CLS_SRAM_L(idx));
+ u32 cls_hi = t4_read_reg(adap, MPS_CLS_SRAM_H(idx));
+ u32 rplc[4] = {0, 0, 0, 0};
+
+ if (tcamx & tcamy) {
+ seq_printf(seq, "%3u -\n", idx);
+ goto out;
+ }
+
+ if (cls_lo & REPLICATE) {
+ struct fw_ldst_cmd ldst_cmd;
+ int ret;
+
+ memset(&ldst_cmd, 0, sizeof(ldst_cmd));
+ ldst_cmd.op_to_addrspace =
+ htonl(FW_CMD_OP(FW_LDST_CMD) |
+ FW_CMD_REQUEST |
+ FW_CMD_READ |
+ FW_LDST_CMD_ADDRSPACE(
+ FW_LDST_ADDRSPC_MPS));
+ ldst_cmd.cycles_to_len16 = htonl(FW_LEN16(ldst_cmd));
+ ldst_cmd.u.mps.fid_ctl =
+ htons(FW_LDST_CMD_FID(FW_LDST_MPS_RPLC) |
+ FW_LDST_CMD_CTL(idx));
+ ret = t4_wr_mbox(adap, adap->mbox, &ldst_cmd,
+ sizeof(ldst_cmd), &ldst_cmd);
+ if (ret)
+ dev_warn(adap->pdev_dev, "Can't read MPS "
+ "replication map for idx %d: %d\n",
+ idx, -ret);
+ else {
+ rplc[0] = ntohl(ldst_cmd.u.mps.rplc31_0);
+ rplc[1] = ntohl(ldst_cmd.u.mps.rplc63_32);
+ rplc[2] = ntohl(ldst_cmd.u.mps.rplc95_64);
+ rplc[3] = ntohl(ldst_cmd.u.mps.rplc127_96);
+ }
+ }
+
+ tcamxy2valmask(tcamx, tcamy, addr, &mask);
+ seq_printf(seq, "%3u %02x:%02x:%02x:%02x:%02x:%02x %012llx"
+ "%3c %#x%4u%4d",
+ idx, addr[0], addr[1], addr[2], addr[3], addr[4],
+ addr[5], (unsigned long long)mask,
+ (cls_lo & SRAM_VLD) ? 'Y' : 'N', PORTMAP_GET(cls_hi),
+ PF_GET(cls_lo),
+ (cls_lo & VF_VALID) ? VF_GET(cls_lo) : -1);
+ if (cls_lo & REPLICATE)
+ seq_printf(seq, " %08x %08x %08x %08x",
+ rplc[3], rplc[2], rplc[1], rplc[0]);
+ else
+ seq_printf(seq, "%36c", ' ');
+ seq_printf(seq, "%4u%3u%3u%3u %#x\n",
+ SRAM_PRIO0_GET(cls_lo), SRAM_PRIO1_GET(cls_lo),
+ SRAM_PRIO2_GET(cls_lo), SRAM_PRIO3_GET(cls_lo),
+ (cls_lo >> MULTILISTEN0_SHIFT) & 0xf);
+ }
+out: return 0;
+}
+
+static inline void *mps_tcam_get_idx(struct seq_file *seq, loff_t pos)
+{
+ struct adapter *adap = seq->private;
+ int max_mac_addr = is_t4(adap->params.chip) ?
+ NUM_MPS_CLS_SRAM_L_INSTANCES :
+ NUM_MPS_T5_CLS_SRAM_L_INSTANCES;
+ return ((pos <= max_mac_addr) ? (void *)(uintptr_t)(pos + 1) : NULL);
+}
+
+static void *mps_tcam_start(struct seq_file *seq, loff_t *pos)
+{
+ return *pos ? mps_tcam_get_idx(seq, *pos) : SEQ_START_TOKEN;
+}
+
+static void *mps_tcam_next(struct seq_file *seq, void *v, loff_t *pos)
+{
+ ++*pos;
+ return mps_tcam_get_idx(seq, *pos);
+}
+
+static void mps_tcam_stop(struct seq_file *seq, void *v)
+{
+}
+
+static const struct seq_operations mps_tcam_seq_ops = {
+ .start = mps_tcam_start,
+ .next = mps_tcam_next,
+ .stop = mps_tcam_stop,
+ .show = mps_tcam_show
+};
+
+static int mps_tcam_open(struct inode *inode, struct file *file)
+{
+ int res = seq_open(file, &mps_tcam_seq_ops);
+
+ if (!res) {
+ struct seq_file *seq = file->private_data;
+
+ seq->private = inode->i_private;
+ }
+ return res;
+}
+
+static const struct file_operations mps_tcam_debugfs_fops = {
+ .owner = THIS_MODULE,
+ .open = mps_tcam_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = seq_release,
+};
+
static ssize_t mem_read(struct file *file, char __user *buf, size_t count,
loff_t *ppos)
{
@@ -517,6 +646,7 @@ int t4_setup_debugfs(struct adapter *adap)
{ "cim_qcfg", &cim_qcfg_fops, S_IRUSR, 0 },
{ "devlog", &devlog_fops, S_IRUSR, 0 },
{ "l2t", &t4_l2t_fops, S_IRUSR, 0},
+ { "mps_tcam", &mps_tcam_debugfs_fops, S_IRUSR, 0 },
};
add_debugfs_files(adap,
diff --git a/drivers/net/ethernet/chelsio/cxgb4/t4_regs.h b/drivers/net/ethernet/chelsio/cxgb4/t4_regs.h
index 562cd70..6c4369e 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/t4_regs.h
+++ b/drivers/net/ethernet/chelsio/cxgb4/t4_regs.h
@@ -1054,6 +1054,22 @@
#define MPS_RX_PERR_INT_CAUSE 0x11074
+#define MPS_CLS_TCAM_Y_L(idx) (0xf000 + (idx) * 16)
+#define MPS_CLS_TCAM_X_L(idx) (0xf008 + (idx) * 16)
+#define MPS_CLS_SRAM_L(idx) (0xe000 + (idx) * 8)
+#define MPS_CLS_SRAM_H(idx) (0xe004 + (idx) * 8)
+#define REPLICATE (1U << 11)
+#define SRAM_VLD (1U << 12)
+#define SRAM_PRIO0_GET(x) (((x) >> 13) & 0x7U)
+#define SRAM_PRIO1_GET(x) (((x) >> 16) & 0x7U)
+#define SRAM_PRIO2_GET(x) (((x) >> 19) & 0x7U)
+#define SRAM_PRIO3_GET(x) (((x) >> 22) & 0x7U)
+#define PORTMAP_GET(x) (((x) >> 0) & 0xfU)
+#define PF_GET(x) (((x) >> 8) & 0x7U)
+#define VF_GET(x) (((x) >> 0) & 0x7fU)
+#define VF_VALID (1U << 7)
+#define MULTILISTEN0_SHIFT 25
+
#define CPL_INTR_CAUSE 0x19054
#define CIM_OP_MAP_PERR 0x00000020U
#define CIM_OVFL_ERROR 0x00000010U
--
1.7.1
next prev parent reply other threads:[~2014-10-16 1:16 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-10-16 1:22 [PATCH net-next 0/4] Add support for few debugfs entries Hariprasad Shenai
2014-10-16 1:22 ` [PATCH net-next 1/4] cxgb4: Add cxgb4_debugfs.c and devlog support Hariprasad Shenai
2014-10-16 1:22 ` [PATCH net-next 2/4] cxgb4: Add support for cim_la entry in debugfs Hariprasad Shenai
2014-10-16 1:22 ` [PATCH net-next 3/4] cxgb4: Add support for cim_la_qcfg " Hariprasad Shenai
2014-10-16 1:22 ` Hariprasad Shenai [this message]
2014-10-16 3:24 ` [PATCH net-next 0/4] Add support for few debugfs entries David Miller
2015-01-07 3:17 Hariprasad Shenai
2015-01-07 3:18 ` [PATCH net-next 4/4] cxgb4: Add support for mps_tcam debugfs Hariprasad Shenai
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