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Date: Tue, 9 Jun 2015 18:27:51 +0530
From: Hariprasad Shenai <hariprasad@...lsio.com>
To: netdev@...r.kernel.org
Cc: davem@...emloft.net, leedom@...lsio.com, nirranjan@...lsio.com,
Hariprasad Shenai <hariprasad@...lsio.com>
Subject: [PATCH net-next 2/3] cxgb4: Add debugfs entry to dump CIM PIF logic analyzer contents
Signed-off-by: Hariprasad Shenai <hariprasad@...lsio.com>
---
drivers/net/ethernet/chelsio/cxgb4/cxgb4.h | 3 ++
drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c | 44 ++++++++++++++++++++++
drivers/net/ethernet/chelsio/cxgb4/t4_hw.c | 34 +++++++++++++++++
drivers/net/ethernet/chelsio/cxgb4/t4_hw.h | 1 +
drivers/net/ethernet/chelsio/cxgb4/t4_regs.h | 13 +++++++
5 files changed, 95 insertions(+)
diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4.h b/drivers/net/ethernet/chelsio/cxgb4/cxgb4.h
index 2465026..d84c945 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4.h
+++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4.h
@@ -1337,6 +1337,9 @@ int t4_cim_read(struct adapter *adap, unsigned int addr, unsigned int n,
int t4_cim_write(struct adapter *adap, unsigned int addr, unsigned int n,
const unsigned int *valp);
int t4_cim_read_la(struct adapter *adap, u32 *la_buf, unsigned int *wrptr);
+void t4_cim_read_pif_la(struct adapter *adap, u32 *pif_req, u32 *pif_rsp,
+ unsigned int *pif_req_wrptr,
+ unsigned int *pif_rsp_wrptr);
void t4_cim_read_ma_la(struct adapter *adap, u32 *ma_req, u32 *ma_rsp);
void t4_read_cimq_cfg(struct adapter *adap, u16 *base, u16 *size, u16 *thres);
const char *t4_get_port_type_description(enum fw_port_type port_type);
diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c
index 7c9ad63..eb39564 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c
+++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c
@@ -182,6 +182,49 @@ static const struct file_operations cim_la_fops = {
.release = seq_release_private
};
+static int cim_pif_la_show(struct seq_file *seq, void *v, int idx)
+{
+ const u32 *p = v;
+
+ if (v == SEQ_START_TOKEN) {
+ seq_puts(seq, "Cntl ID DataBE Addr Data\n");
+ } else if (idx < CIM_PIFLA_SIZE) {
+ seq_printf(seq, " %02x %02x %04x %08x %08x%08x%08x%08x\n",
+ (p[5] >> 22) & 0xff, (p[5] >> 16) & 0x3f,
+ p[5] & 0xffff, p[4], p[3], p[2], p[1], p[0]);
+ } else {
+ if (idx == CIM_PIFLA_SIZE)
+ seq_puts(seq, "\nCntl ID Data\n");
+ seq_printf(seq, " %02x %02x %08x%08x%08x%08x\n",
+ (p[4] >> 6) & 0xff, p[4] & 0x3f,
+ p[3], p[2], p[1], p[0]);
+ }
+ return 0;
+}
+
+static int cim_pif_la_open(struct inode *inode, struct file *file)
+{
+ struct seq_tab *p;
+ struct adapter *adap = inode->i_private;
+
+ p = seq_open_tab(file, 2 * CIM_PIFLA_SIZE, 6 * sizeof(u32), 1,
+ cim_pif_la_show);
+ if (!p)
+ return -ENOMEM;
+
+ t4_cim_read_pif_la(adap, (u32 *)p->data,
+ (u32 *)p->data + 6 * CIM_PIFLA_SIZE, NULL, NULL);
+ return 0;
+}
+
+static const struct file_operations cim_pif_la_fops = {
+ .owner = THIS_MODULE,
+ .open = cim_pif_la_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = seq_release_private
+};
+
static int cim_ma_la_show(struct seq_file *seq, void *v, int idx)
{
const u32 *p = v;
@@ -2174,6 +2217,7 @@ int t4_setup_debugfs(struct adapter *adap)
static struct t4_debugfs_entry t4_debugfs_files[] = {
{ "cim_la", &cim_la_fops, S_IRUSR, 0 },
+ { "cim_pif_la", &cim_pif_la_fops, S_IRUSR, 0 },
{ "cim_ma_la", &cim_ma_la_fops, S_IRUSR, 0 },
{ "cim_qcfg", &cim_qcfg_fops, S_IRUSR, 0 },
{ "clk", &clk_debugfs_fops, S_IRUSR, 0 },
diff --git a/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c b/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c
index 5643cad..c967b24 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c
+++ b/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c
@@ -2586,6 +2586,40 @@ int t4_fwcache(struct adapter *adap, enum fw_params_param_dev_fwcache op)
return t4_wr_mbox(adap, adap->mbox, &c, sizeof(c), NULL);
}
+void t4_cim_read_pif_la(struct adapter *adap, u32 *pif_req, u32 *pif_rsp,
+ unsigned int *pif_req_wrptr,
+ unsigned int *pif_rsp_wrptr)
+{
+ int i, j;
+ u32 cfg, val, req, rsp;
+
+ cfg = t4_read_reg(adap, CIM_DEBUGCFG_A);
+ if (cfg & LADBGEN_F)
+ t4_write_reg(adap, CIM_DEBUGCFG_A, cfg ^ LADBGEN_F);
+
+ val = t4_read_reg(adap, CIM_DEBUGSTS_A);
+ req = POLADBGWRPTR_G(val);
+ rsp = PILADBGWRPTR_G(val);
+ if (pif_req_wrptr)
+ *pif_req_wrptr = req;
+ if (pif_rsp_wrptr)
+ *pif_rsp_wrptr = rsp;
+
+ for (i = 0; i < CIM_PIFLA_SIZE; i++) {
+ for (j = 0; j < 6; j++) {
+ t4_write_reg(adap, CIM_DEBUGCFG_A, POLADBGRDPTR_V(req) |
+ PILADBGRDPTR_V(rsp));
+ *pif_req++ = t4_read_reg(adap, CIM_PO_LA_DEBUGDATA_A);
+ *pif_rsp++ = t4_read_reg(adap, CIM_PI_LA_DEBUGDATA_A);
+ req++;
+ rsp++;
+ }
+ req = (req + 2) & POLADBGRDPTR_M;
+ rsp = (rsp + 2) & PILADBGRDPTR_M;
+ }
+ t4_write_reg(adap, CIM_DEBUGCFG_A, cfg);
+}
+
void t4_cim_read_ma_la(struct adapter *adap, u32 *ma_req, u32 *ma_rsp)
{
u32 cfg;
diff --git a/drivers/net/ethernet/chelsio/cxgb4/t4_hw.h b/drivers/net/ethernet/chelsio/cxgb4/t4_hw.h
index 24c5462..c8488f4 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/t4_hw.h
+++ b/drivers/net/ethernet/chelsio/cxgb4/t4_hw.h
@@ -59,6 +59,7 @@ enum {
CIM_NUM_OBQ = 6, /* # of CIM OBQs */
CIM_NUM_OBQ_T5 = 8, /* # of CIM OBQs for T5 adapter */
CIMLA_SIZE = 2048, /* # of 32-bit words in CIM LA */
+ CIM_PIFLA_SIZE = 64, /* # of 192-bit words in CIM PIF LA */
CIM_MALA_SIZE = 64, /* # of 160-bit words in CIM MA LA */
CIM_IBQ_SIZE = 128, /* # of 128-bit words in a CIM IBQ */
CIM_OBQ_SIZE = 128, /* # of 128-bit words in a CIM OBQ */
diff --git a/drivers/net/ethernet/chelsio/cxgb4/t4_regs.h b/drivers/net/ethernet/chelsio/cxgb4/t4_regs.h
index 07072af..525d06e 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/t4_regs.h
+++ b/drivers/net/ethernet/chelsio/cxgb4/t4_regs.h
@@ -2760,17 +2760,30 @@
#define CIM_IBQ_DBG_DATA_A 0x7b68
#define CIM_OBQ_DBG_DATA_A 0x7b6c
#define CIM_DEBUGCFG_A 0x7b70
+#define CIM_DEBUGSTS_A 0x7b74
#define POLADBGRDPTR_S 23
+#define POLADBGRDPTR_M 0x1ffU
#define POLADBGRDPTR_V(x) ((x) << POLADBGRDPTR_S)
+#define POLADBGWRPTR_S 16
+#define POLADBGWRPTR_M 0x1ffU
+#define POLADBGWRPTR_G(x) (((x) >> POLADBGWRPTR_S) & POLADBGWRPTR_M)
+
#define PILADBGRDPTR_S 14
+#define PILADBGRDPTR_M 0x1ffU
#define PILADBGRDPTR_V(x) ((x) << PILADBGRDPTR_S)
+#define PILADBGWRPTR_S 0
+#define PILADBGWRPTR_M 0x1ffU
+#define PILADBGWRPTR_G(x) (((x) >> PILADBGWRPTR_S) & PILADBGWRPTR_M)
+
#define LADBGEN_S 12
#define LADBGEN_V(x) ((x) << LADBGEN_S)
#define LADBGEN_F LADBGEN_V(1U)
+#define CIM_PO_LA_DEBUGDATA_A 0x7b78
+#define CIM_PI_LA_DEBUGDATA_A 0x7b7c
#define CIM_PO_LA_MADEBUGDATA_A 0x7b80
#define CIM_PI_LA_MADEBUGDATA_A 0x7b84
--
2.3.4
--
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