Commit c778af7d authored by Hariprasad Shenai's avatar Hariprasad Shenai Committed by David S. Miller

cxgb4: Addded support in debugfs to dump CIM outbound queue content

Signed-off-by: default avatarHariprasad Shenai <hariprasad@chelsio.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent e5f0e43b
......@@ -1056,6 +1056,8 @@ int t4_edc_read(struct adapter *adap, int idx, u32 addr, __be32 *data,
u64 *parity);
int t4_read_cim_ibq(struct adapter *adap, unsigned int qid, u32 *data,
size_t n);
int t4_read_cim_obq(struct adapter *adap, unsigned int qid, u32 *data,
size_t n);
int t4_cim_read(struct adapter *adap, unsigned int addr, unsigned int n,
unsigned int *valp);
int t4_cim_write(struct adapter *adap, unsigned int addr, unsigned int n,
......
......@@ -104,6 +104,17 @@ struct seq_tab *seq_open_tab(struct file *f, unsigned int rows,
return p;
}
/* Trim the size of a seq_tab to the supplied number of rows. The operation is
* irreversible.
*/
static int seq_tab_trim(struct seq_tab *p, unsigned int new_rows)
{
if (new_rows > p->rows)
return -EINVAL;
p->rows = new_rows;
return 0;
}
static int cim_la_show(struct seq_file *seq, void *v, int idx)
{
if (v == SEQ_START_TOKEN)
......@@ -275,6 +286,35 @@ static const struct file_operations cim_ibq_fops = {
.release = seq_release_private
};
static int cim_obq_open(struct inode *inode, struct file *file)
{
int ret;
struct seq_tab *p;
unsigned int qid = (uintptr_t)inode->i_private & 7;
struct adapter *adap = inode->i_private - qid;
p = seq_open_tab(file, 6 * CIM_OBQ_SIZE, 4 * sizeof(u32), 0, cimq_show);
if (!p)
return -ENOMEM;
ret = t4_read_cim_obq(adap, qid, (u32 *)p->data, 6 * CIM_OBQ_SIZE * 4);
if (ret < 0) {
seq_release_private(inode, file);
} else {
seq_tab_trim(p, ret / 4);
ret = 0;
}
return ret;
}
static const struct file_operations cim_obq_fops = {
.owner = THIS_MODULE,
.open = cim_obq_open,
.read = seq_read,
.llseek = seq_lseek,
.release = seq_release_private
};
/* Firmware Device Log dump. */
static const char * const devlog_level_strings[] = {
[FW_DEVLOG_LEVEL_EMERG] = "EMERG",
......@@ -1388,14 +1428,31 @@ int t4_setup_debugfs(struct adapter *adap)
{ "ibq_sge0", &cim_ibq_fops, S_IRUSR, 3 },
{ "ibq_sge1", &cim_ibq_fops, S_IRUSR, 4 },
{ "ibq_ncsi", &cim_ibq_fops, S_IRUSR, 5 },
{ "obq_ulp0", &cim_obq_fops, S_IRUSR, 0 },
{ "obq_ulp1", &cim_obq_fops, S_IRUSR, 1 },
{ "obq_ulp2", &cim_obq_fops, S_IRUSR, 2 },
{ "obq_ulp3", &cim_obq_fops, S_IRUSR, 3 },
{ "obq_sge", &cim_obq_fops, S_IRUSR, 4 },
{ "obq_ncsi", &cim_obq_fops, S_IRUSR, 5 },
#if IS_ENABLED(CONFIG_IPV6)
{ "clip_tbl", &clip_tbl_debugfs_fops, S_IRUSR, 0 },
#endif
};
/* Debug FS nodes common to all T5 and later adapters.
*/
static struct t4_debugfs_entry t5_debugfs_files[] = {
{ "obq_sge_rx_q0", &cim_obq_fops, S_IRUSR, 6 },
{ "obq_sge_rx_q1", &cim_obq_fops, S_IRUSR, 7 },
};
add_debugfs_files(adap,
t4_debugfs_files,
ARRAY_SIZE(t4_debugfs_files));
if (!is_t4(adap->params.chip))
add_debugfs_files(adap,
t5_debugfs_files,
ARRAY_SIZE(t5_debugfs_files));
i = t4_read_reg(adap, MA_TARGET_MEM_ENABLE_A);
if (i & EDRAM0_ENABLE_F) {
......
......@@ -4567,6 +4567,49 @@ int t4_read_cim_ibq(struct adapter *adap, unsigned int qid, u32 *data, size_t n)
return i;
}
/**
* t4_read_cim_obq - read the contents of a CIM outbound queue
* @adap: the adapter
* @qid: the queue index
* @data: where to store the queue contents
* @n: capacity of @data in 32-bit words
*
* Reads the contents of the selected CIM queue starting at address 0 up
* to the capacity of @data. @n must be a multiple of 4. Returns < 0 on
* error and the number of 32-bit words actually read on success.
*/
int t4_read_cim_obq(struct adapter *adap, unsigned int qid, u32 *data, size_t n)
{
int i, err;
unsigned int addr, v, nwords;
int cim_num_obq = is_t4(adap->params.chip) ?
CIM_NUM_OBQ : CIM_NUM_OBQ_T5;
if ((qid > (cim_num_obq - 1)) || (n & 3))
return -EINVAL;
t4_write_reg(adap, CIM_QUEUE_CONFIG_REF_A, OBQSELECT_F |
QUENUMSELECT_V(qid));
v = t4_read_reg(adap, CIM_QUEUE_CONFIG_CTRL_A);
addr = CIMQBASE_G(v) * 64; /* muliple of 256 -> muliple of 4 */
nwords = CIMQSIZE_G(v) * 64; /* same */
if (n > nwords)
n = nwords;
for (i = 0; i < n; i++, addr++) {
t4_write_reg(adap, CIM_OBQ_DBG_CFG_A, OBQDBGADDR_V(addr) |
OBQDBGEN_F);
err = t4_wait_op_done(adap, CIM_OBQ_DBG_CFG_A, OBQDBGBUSY_F, 0,
2, 1);
if (err)
return err;
*data++ = t4_read_reg(adap, CIM_OBQ_DBG_DATA_A);
}
t4_write_reg(adap, CIM_OBQ_DBG_CFG_A, 0);
return i;
}
/**
* t4_cim_read - read a block from CIM internal address space
* @adap: the adapter
......
......@@ -61,6 +61,7 @@ enum {
CIM_NUM_OBQ_T5 = 8, /* # of CIM OBQs for T5 adapter */
CIMLA_SIZE = 2048, /* # of 32-bit words in CIM 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 */
};
enum {
......
......@@ -2553,7 +2553,23 @@
#define IBQDBGEN_V(x) ((x) << IBQDBGEN_S)
#define IBQDBGEN_F IBQDBGEN_V(1U)
#define CIM_OBQ_DBG_CFG_A 0x7b64
#define OBQDBGADDR_S 16
#define OBQDBGADDR_M 0xfffU
#define OBQDBGADDR_V(x) ((x) << OBQDBGADDR_S)
#define OBQDBGADDR_G(x) (((x) >> OBQDBGADDR_S) & OBQDBGADDR_M)
#define OBQDBGBUSY_S 1
#define OBQDBGBUSY_V(x) ((x) << OBQDBGBUSY_S)
#define OBQDBGBUSY_F OBQDBGBUSY_V(1U)
#define OBQDBGEN_S 0
#define OBQDBGEN_V(x) ((x) << OBQDBGEN_S)
#define OBQDBGEN_F OBQDBGEN_V(1U)
#define CIM_IBQ_DBG_DATA_A 0x7b68
#define CIM_OBQ_DBG_DATA_A 0x7b6c
#define UPDBGLARDEN_S 1
#define UPDBGLARDEN_V(x) ((x) << UPDBGLARDEN_S)
......
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