Commit 49aa284f authored by Hariprasad Shenai's avatar Hariprasad Shenai Committed by David S. Miller

cxgb4: Add support for devlog

Add support for device log entry in debugfs
Signed-off-by: default avatarHariprasad Shenai <hariprasad@chelsio.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent cd91cc5b
...@@ -290,11 +290,19 @@ enum chip_type { ...@@ -290,11 +290,19 @@ enum chip_type {
T5_LAST_REV = T5_A1, T5_LAST_REV = T5_A1,
}; };
struct devlog_params {
u32 memtype; /* which memory (EDC0, EDC1, MC) */
u32 start; /* start of log in firmware memory */
u32 size; /* size of log */
};
struct adapter_params { struct adapter_params {
struct sge_params sge; struct sge_params sge;
struct tp_params tp; struct tp_params tp;
struct vpd_params vpd; struct vpd_params vpd;
struct pci_params pci; struct pci_params pci;
struct devlog_params devlog;
enum pcie_memwin drv_memwin;
unsigned int sf_size; /* serial flash size in bytes */ unsigned int sf_size; /* serial flash size in bytes */
unsigned int sf_nsec; /* # of flash sectors */ unsigned int sf_nsec; /* # of flash sectors */
......
...@@ -43,6 +43,203 @@ ...@@ -43,6 +43,203 @@
#include "cxgb4_debugfs.h" #include "cxgb4_debugfs.h"
#include "l2t.h" #include "l2t.h"
/* Firmware Device Log dump.
*/
static const char * const devlog_level_strings[] = {
[FW_DEVLOG_LEVEL_EMERG] = "EMERG",
[FW_DEVLOG_LEVEL_CRIT] = "CRIT",
[FW_DEVLOG_LEVEL_ERR] = "ERR",
[FW_DEVLOG_LEVEL_NOTICE] = "NOTICE",
[FW_DEVLOG_LEVEL_INFO] = "INFO",
[FW_DEVLOG_LEVEL_DEBUG] = "DEBUG"
};
static const char * const devlog_facility_strings[] = {
[FW_DEVLOG_FACILITY_CORE] = "CORE",
[FW_DEVLOG_FACILITY_SCHED] = "SCHED",
[FW_DEVLOG_FACILITY_TIMER] = "TIMER",
[FW_DEVLOG_FACILITY_RES] = "RES",
[FW_DEVLOG_FACILITY_HW] = "HW",
[FW_DEVLOG_FACILITY_FLR] = "FLR",
[FW_DEVLOG_FACILITY_DMAQ] = "DMAQ",
[FW_DEVLOG_FACILITY_PHY] = "PHY",
[FW_DEVLOG_FACILITY_MAC] = "MAC",
[FW_DEVLOG_FACILITY_PORT] = "PORT",
[FW_DEVLOG_FACILITY_VI] = "VI",
[FW_DEVLOG_FACILITY_FILTER] = "FILTER",
[FW_DEVLOG_FACILITY_ACL] = "ACL",
[FW_DEVLOG_FACILITY_TM] = "TM",
[FW_DEVLOG_FACILITY_QFC] = "QFC",
[FW_DEVLOG_FACILITY_DCB] = "DCB",
[FW_DEVLOG_FACILITY_ETH] = "ETH",
[FW_DEVLOG_FACILITY_OFLD] = "OFLD",
[FW_DEVLOG_FACILITY_RI] = "RI",
[FW_DEVLOG_FACILITY_ISCSI] = "ISCSI",
[FW_DEVLOG_FACILITY_FCOE] = "FCOE",
[FW_DEVLOG_FACILITY_FOISCSI] = "FOISCSI",
[FW_DEVLOG_FACILITY_FOFCOE] = "FOFCOE"
};
/* Information gathered by Device Log Open routine for the display routine.
*/
struct devlog_info {
unsigned int nentries; /* number of entries in log[] */
unsigned int first; /* first [temporal] entry in log[] */
struct fw_devlog_e log[0]; /* Firmware Device Log */
};
/* Dump a Firmaware Device Log entry.
*/
static int devlog_show(struct seq_file *seq, void *v)
{
if (v == SEQ_START_TOKEN)
seq_printf(seq, "%10s %15s %8s %8s %s\n",
"Seq#", "Tstamp", "Level", "Facility", "Message");
else {
struct devlog_info *dinfo = seq->private;
int fidx = (uintptr_t)v - 2;
unsigned long index;
struct fw_devlog_e *e;
/* Get a pointer to the log entry to display. Skip unused log
* entries.
*/
index = dinfo->first + fidx;
if (index >= dinfo->nentries)
index -= dinfo->nentries;
e = &dinfo->log[index];
if (e->timestamp == 0)
return 0;
/* Print the message. This depends on the firmware using
* exactly the same formating strings as the kernel so we may
* eventually have to put a format interpreter in here ...
*/
seq_printf(seq, "%10d %15llu %8s %8s ",
e->seqno, e->timestamp,
(e->level < ARRAY_SIZE(devlog_level_strings)
? devlog_level_strings[e->level]
: "UNKNOWN"),
(e->facility < ARRAY_SIZE(devlog_facility_strings)
? devlog_facility_strings[e->facility]
: "UNKNOWN"));
seq_printf(seq, e->fmt, e->params[0], e->params[1],
e->params[2], e->params[3], e->params[4],
e->params[5], e->params[6], e->params[7]);
}
return 0;
}
/* Sequential File Operations for Device Log.
*/
static inline void *devlog_get_idx(struct devlog_info *dinfo, loff_t pos)
{
if (pos > dinfo->nentries)
return NULL;
return (void *)(uintptr_t)(pos + 1);
}
static void *devlog_start(struct seq_file *seq, loff_t *pos)
{
struct devlog_info *dinfo = seq->private;
return (*pos
? devlog_get_idx(dinfo, *pos)
: SEQ_START_TOKEN);
}
static void *devlog_next(struct seq_file *seq, void *v, loff_t *pos)
{
struct devlog_info *dinfo = seq->private;
(*pos)++;
return devlog_get_idx(dinfo, *pos);
}
static void devlog_stop(struct seq_file *seq, void *v)
{
}
static const struct seq_operations devlog_seq_ops = {
.start = devlog_start,
.next = devlog_next,
.stop = devlog_stop,
.show = devlog_show
};
/* Set up for reading the firmware's device log. We read the entire log here
* and then display it incrementally in devlog_show().
*/
static int devlog_open(struct inode *inode, struct file *file)
{
struct adapter *adap = inode->i_private;
struct devlog_params *dparams = &adap->params.devlog;
struct devlog_info *dinfo;
unsigned int index;
u32 fseqno;
int ret;
/* If we don't know where the log is we can't do anything.
*/
if (dparams->start == 0)
return -ENXIO;
/* Allocate the space to read in the firmware's device log and set up
* for the iterated call to our display function.
*/
dinfo = __seq_open_private(file, &devlog_seq_ops,
sizeof(*dinfo) + dparams->size);
if (!dinfo)
return -ENOMEM;
/* Record the basic log buffer information and read in the raw log.
*/
dinfo->nentries = (dparams->size / sizeof(struct fw_devlog_e));
dinfo->first = 0;
spin_lock(&adap->win0_lock);
ret = t4_memory_rw(adap, adap->params.drv_memwin, dparams->memtype,
dparams->start, dparams->size, (__be32 *)dinfo->log,
T4_MEMORY_READ);
spin_unlock(&adap->win0_lock);
if (ret) {
seq_release_private(inode, file);
return ret;
}
/* Translate log multi-byte integral elements into host native format
* and determine where the first entry in the log is.
*/
for (fseqno = ~((u32)0), index = 0; index < dinfo->nentries; index++) {
struct fw_devlog_e *e = &dinfo->log[index];
int i;
__u32 seqno;
if (e->timestamp == 0)
continue;
e->timestamp = (__force __be64)be64_to_cpu(e->timestamp);
seqno = be32_to_cpu(e->seqno);
for (i = 0; i < 8; i++)
e->params[i] =
(__force __be32)be32_to_cpu(e->params[i]);
if (seqno < fseqno) {
fseqno = seqno;
dinfo->first = index;
}
}
return 0;
}
static const struct file_operations devlog_fops = {
.owner = THIS_MODULE,
.open = devlog_open,
.read = seq_read,
.llseek = seq_lseek,
.release = seq_release_private
};
static ssize_t mem_read(struct file *file, char __user *buf, size_t count, static ssize_t mem_read(struct file *file, char __user *buf, size_t count,
loff_t *ppos) loff_t *ppos)
{ {
...@@ -121,6 +318,7 @@ int t4_setup_debugfs(struct adapter *adap) ...@@ -121,6 +318,7 @@ int t4_setup_debugfs(struct adapter *adap)
u32 size; u32 size;
static struct t4_debugfs_entry t4_debugfs_files[] = { static struct t4_debugfs_entry t4_debugfs_files[] = {
{ "devlog", &devlog_fops, S_IRUSR, 0 },
{ "l2t", &t4_l2t_fops, S_IRUSR, 0}, { "l2t", &t4_l2t_fops, S_IRUSR, 0},
}; };
......
...@@ -5541,6 +5541,8 @@ static int adap_init0(struct adapter *adap) ...@@ -5541,6 +5541,8 @@ static int adap_init0(struct adapter *adap)
enum dev_state state; enum dev_state state;
u32 params[7], val[7]; u32 params[7], val[7];
struct fw_caps_config_cmd caps_cmd; struct fw_caps_config_cmd caps_cmd;
struct fw_devlog_cmd devlog_cmd;
u32 devlog_meminfo;
int reset = 1; int reset = 1;
/* Contact FW, advertising Master capability */ /* Contact FW, advertising Master capability */
...@@ -5621,6 +5623,30 @@ static int adap_init0(struct adapter *adap) ...@@ -5621,6 +5623,30 @@ static int adap_init0(struct adapter *adap)
if (ret < 0) if (ret < 0)
goto bye; goto bye;
/* Read firmware device log parameters. We really need to find a way
* to get these parameters initialized with some default values (which
* are likely to be correct) for the case where we either don't
* attache to the firmware or it's crashed when we probe the adapter.
* That way we'll still be able to perform early firmware startup
* debugging ... If the request to get the Firmware's Device Log
* parameters fails, we'll live so we don't make that a fatal error.
*/
memset(&devlog_cmd, 0, sizeof(devlog_cmd));
devlog_cmd.op_to_write = htonl(FW_CMD_OP_V(FW_DEVLOG_CMD) |
FW_CMD_REQUEST_F | FW_CMD_READ_F);
devlog_cmd.retval_len16 = htonl(FW_LEN16(devlog_cmd));
ret = t4_wr_mbox(adap, adap->mbox, &devlog_cmd, sizeof(devlog_cmd),
&devlog_cmd);
if (ret == 0) {
devlog_meminfo =
ntohl(devlog_cmd.memtype_devlog_memaddr16_devlog);
adap->params.devlog.memtype =
FW_DEVLOG_CMD_MEMTYPE_DEVLOG_G(devlog_meminfo);
adap->params.devlog.start =
FW_DEVLOG_CMD_MEMADDR16_DEVLOG_G(devlog_meminfo) << 4;
adap->params.devlog.size = ntohl(devlog_cmd.memsize_devlog);
}
/* /*
* Find out what ports are available to us. Note that we need to do * Find out what ports are available to us. Note that we need to do
* this before calling adap_init0_no_config() since it needs nports * this before calling adap_init0_no_config() since it needs nports
......
...@@ -110,6 +110,18 @@ enum { ...@@ -110,6 +110,18 @@ enum {
SGE_INGPADBOUNDARY_SHIFT = 5,/* ingress queue pad boundary */ SGE_INGPADBOUNDARY_SHIFT = 5,/* ingress queue pad boundary */
}; };
/* PCI-e memory window access */
enum pcie_memwin {
MEMWIN_NIC = 0,
MEMWIN_RSVD1 = 1,
MEMWIN_RSVD2 = 2,
MEMWIN_RDMA = 3,
MEMWIN_RSVD4 = 4,
MEMWIN_FOISCSI = 5,
MEMWIN_CSIOSTOR = 6,
MEMWIN_RSVD7 = 7,
};
struct sge_qstat { /* data written to SGE queue status entries */ struct sge_qstat { /* data written to SGE queue status entries */
__be32 qid; __be32 qid;
__be16 cidx; __be16 cidx;
......
...@@ -673,6 +673,7 @@ enum fw_cmd_opcodes { ...@@ -673,6 +673,7 @@ enum fw_cmd_opcodes {
FW_RSS_IND_TBL_CMD = 0x20, FW_RSS_IND_TBL_CMD = 0x20,
FW_RSS_GLB_CONFIG_CMD = 0x22, FW_RSS_GLB_CONFIG_CMD = 0x22,
FW_RSS_VI_CONFIG_CMD = 0x23, FW_RSS_VI_CONFIG_CMD = 0x23,
FW_DEVLOG_CMD = 0x25,
FW_CLIP_CMD = 0x28, FW_CLIP_CMD = 0x28,
FW_LASTC2E_CMD = 0x40, FW_LASTC2E_CMD = 0x40,
FW_ERROR_CMD = 0x80, FW_ERROR_CMD = 0x80,
...@@ -3038,4 +3039,84 @@ enum fw_hdr_flags { ...@@ -3038,4 +3039,84 @@ enum fw_hdr_flags {
FW_HDR_FLAGS_RESET_HALT = 0x00000001, FW_HDR_FLAGS_RESET_HALT = 0x00000001,
}; };
/* length of the formatting string */
#define FW_DEVLOG_FMT_LEN 192
/* maximum number of the formatting string parameters */
#define FW_DEVLOG_FMT_PARAMS_NUM 8
/* priority levels */
enum fw_devlog_level {
FW_DEVLOG_LEVEL_EMERG = 0x0,
FW_DEVLOG_LEVEL_CRIT = 0x1,
FW_DEVLOG_LEVEL_ERR = 0x2,
FW_DEVLOG_LEVEL_NOTICE = 0x3,
FW_DEVLOG_LEVEL_INFO = 0x4,
FW_DEVLOG_LEVEL_DEBUG = 0x5,
FW_DEVLOG_LEVEL_MAX = 0x5,
};
/* facilities that may send a log message */
enum fw_devlog_facility {
FW_DEVLOG_FACILITY_CORE = 0x00,
FW_DEVLOG_FACILITY_CF = 0x01,
FW_DEVLOG_FACILITY_SCHED = 0x02,
FW_DEVLOG_FACILITY_TIMER = 0x04,
FW_DEVLOG_FACILITY_RES = 0x06,
FW_DEVLOG_FACILITY_HW = 0x08,
FW_DEVLOG_FACILITY_FLR = 0x10,
FW_DEVLOG_FACILITY_DMAQ = 0x12,
FW_DEVLOG_FACILITY_PHY = 0x14,
FW_DEVLOG_FACILITY_MAC = 0x16,
FW_DEVLOG_FACILITY_PORT = 0x18,
FW_DEVLOG_FACILITY_VI = 0x1A,
FW_DEVLOG_FACILITY_FILTER = 0x1C,
FW_DEVLOG_FACILITY_ACL = 0x1E,
FW_DEVLOG_FACILITY_TM = 0x20,
FW_DEVLOG_FACILITY_QFC = 0x22,
FW_DEVLOG_FACILITY_DCB = 0x24,
FW_DEVLOG_FACILITY_ETH = 0x26,
FW_DEVLOG_FACILITY_OFLD = 0x28,
FW_DEVLOG_FACILITY_RI = 0x2A,
FW_DEVLOG_FACILITY_ISCSI = 0x2C,
FW_DEVLOG_FACILITY_FCOE = 0x2E,
FW_DEVLOG_FACILITY_FOISCSI = 0x30,
FW_DEVLOG_FACILITY_FOFCOE = 0x32,
FW_DEVLOG_FACILITY_MAX = 0x32,
};
/* log message format */
struct fw_devlog_e {
__be64 timestamp;
__be32 seqno;
__be16 reserved1;
__u8 level;
__u8 facility;
__u8 fmt[FW_DEVLOG_FMT_LEN];
__be32 params[FW_DEVLOG_FMT_PARAMS_NUM];
__be32 reserved3[4];
};
struct fw_devlog_cmd {
__be32 op_to_write;
__be32 retval_len16;
__u8 level;
__u8 r2[7];
__be32 memtype_devlog_memaddr16_devlog;
__be32 memsize_devlog;
__be32 r3[2];
};
#define FW_DEVLOG_CMD_MEMTYPE_DEVLOG_S 28
#define FW_DEVLOG_CMD_MEMTYPE_DEVLOG_M 0xf
#define FW_DEVLOG_CMD_MEMTYPE_DEVLOG_G(x) \
(((x) >> FW_DEVLOG_CMD_MEMTYPE_DEVLOG_S) & \
FW_DEVLOG_CMD_MEMTYPE_DEVLOG_M)
#define FW_DEVLOG_CMD_MEMADDR16_DEVLOG_S 0
#define FW_DEVLOG_CMD_MEMADDR16_DEVLOG_M 0xfffffff
#define FW_DEVLOG_CMD_MEMADDR16_DEVLOG_G(x) \
(((x) >> FW_DEVLOG_CMD_MEMADDR16_DEVLOG_S) & \
FW_DEVLOG_CMD_MEMADDR16_DEVLOG_M)
#endif /* _T4FW_INTERFACE_H_ */ #endif /* _T4FW_INTERFACE_H_ */
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