.write = mbox_write
};
+static int mps_trc_show(struct seq_file *seq, void *v)
+{
+ int enabled, i;
+ struct trace_params tp;
+ unsigned int trcidx = (uintptr_t)seq->private & 3;
+ struct adapter *adap = seq->private - trcidx;
+
+ t4_get_trace_filter(adap, &tp, trcidx, &enabled);
+ if (!enabled) {
+ seq_puts(seq, "tracer is disabled\n");
+ return 0;
+ }
+
+ if (tp.skip_ofst * 8 >= TRACE_LEN) {
+ dev_err(adap->pdev_dev, "illegal trace pattern skip offset\n");
+ return -EINVAL;
+ }
+ if (tp.port < 8) {
+ i = adap->chan_map[tp.port & 3];
+ if (i >= MAX_NPORTS) {
+ dev_err(adap->pdev_dev, "tracer %u is assigned "
+ "to non-existing port\n", trcidx);
+ return -EINVAL;
+ }
+ seq_printf(seq, "tracer is capturing %s %s, ",
+ adap->port[i]->name, tp.port < 4 ? "Rx" : "Tx");
+ } else
+ seq_printf(seq, "tracer is capturing loopback %d, ",
+ tp.port - 8);
+ seq_printf(seq, "snap length: %u, min length: %u\n", tp.snap_len,
+ tp.min_len);
+ seq_printf(seq, "packets captured %smatch filter\n",
+ tp.invert ? "do not " : "");
+
+ if (tp.skip_ofst) {
+ seq_puts(seq, "filter pattern: ");
+ for (i = 0; i < tp.skip_ofst * 2; i += 2)
+ seq_printf(seq, "%08x%08x", tp.data[i], tp.data[i + 1]);
+ seq_putc(seq, '/');
+ for (i = 0; i < tp.skip_ofst * 2; i += 2)
+ seq_printf(seq, "%08x%08x", tp.mask[i], tp.mask[i + 1]);
+ seq_puts(seq, "@0\n");
+ }
+
+ seq_puts(seq, "filter pattern: ");
+ for (i = tp.skip_ofst * 2; i < TRACE_LEN / 4; i += 2)
+ seq_printf(seq, "%08x%08x", tp.data[i], tp.data[i + 1]);
+ seq_putc(seq, '/');
+ for (i = tp.skip_ofst * 2; i < TRACE_LEN / 4; i += 2)
+ seq_printf(seq, "%08x%08x", tp.mask[i], tp.mask[i + 1]);
+ seq_printf(seq, "@%u\n", (tp.skip_ofst + tp.skip_len) * 8);
+ return 0;
+}
+
+static int mps_trc_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, mps_trc_show, inode->i_private);
+}
+
+static unsigned int xdigit2int(unsigned char c)
+{
+ return isdigit(c) ? c - '0' : tolower(c) - 'a' + 10;
+}
+
+#define TRC_PORT_NONE 0xff
+#define TRC_RSS_ENABLE 0x33
+#define TRC_RSS_DISABLE 0x13
+
+/* Set an MPS trace filter. Syntax is:
+ *
+ * disable
+ *
+ * to disable tracing, or
+ *
+ * interface qid=<qid no> [snaplen=<val>] [minlen=<val>] [not] [<pattern>]...
+ *
+ * where interface is one of rxN, txN, or loopbackN, N = 0..3, qid can be one
+ * of the NIC's response qid obtained from sge_qinfo and pattern has the form
+ *
+ * <pattern data>[/<pattern mask>][@<anchor>]
+ *
+ * Up to 2 filter patterns can be specified. If 2 are supplied the first one
+ * must be anchored at 0. An omited mask is taken as a mask of 1s, an omitted
+ * anchor is taken as 0.
+ */
+static ssize_t mps_trc_write(struct file *file, const char __user *buf,
+ size_t count, loff_t *pos)
+{
+ int i, j, enable, ret;
+ u32 *data, *mask;
+ struct trace_params tp;
+ const struct inode *ino;
+ unsigned int trcidx;
+ char *s, *p, *word, *end;
+ struct adapter *adap;
+
+ ino = file_inode(file);
+ trcidx = (uintptr_t)ino->i_private & 3;
+ adap = ino->i_private - trcidx;
+
+ /* Don't accept input more than 1K, can't be anything valid except lots
+ * of whitespace. Well, use less.
+ */
+ if (count > 1024)
+ return -EFBIG;
+ p = s = kzalloc(count + 1, GFP_USER);
+ if (!s)
+ return -ENOMEM;
+ if (copy_from_user(s, buf, count)) {
+ count = -EFAULT;
+ goto out;
+ }
+
+ if (s[count - 1] == '\n')
+ s[count - 1] = '\0';
+
+ enable = strcmp("disable", s) != 0;
+ if (!enable)
+ goto apply;
+
+ /* enable or disable trace multi rss filter */
+ if (adap->trace_rss)
+ t4_write_reg(adap, MPS_TRC_CFG_A, TRC_RSS_ENABLE);
+ else
+ t4_write_reg(adap, MPS_TRC_CFG_A, TRC_RSS_DISABLE);
+
+ memset(&tp, 0, sizeof(tp));
+ tp.port = TRC_PORT_NONE;
+ i = 0; /* counts pattern nibbles */
+
+ while (p) {
+ while (isspace(*p))
+ p++;
+ word = strsep(&p, " ");
+ if (!*word)
+ break;
+
+ if (!strncmp(word, "qid=", 4)) {
+ end = (char *)word + 4;
+ ret = kstrtoul(end, 10, (unsigned long *)&j);
+ if (ret)
+ goto out;
+ if (!adap->trace_rss) {
+ t4_write_reg(adap, MPS_T5_TRC_RSS_CONTROL_A, j);
+ continue;
+ }
+
+ switch (trcidx) {
+ case 0:
+ t4_write_reg(adap, MPS_TRC_RSS_CONTROL_A, j);
+ break;
+ case 1:
+ t4_write_reg(adap,
+ MPS_TRC_FILTER1_RSS_CONTROL_A, j);
+ break;
+ case 2:
+ t4_write_reg(adap,
+ MPS_TRC_FILTER2_RSS_CONTROL_A, j);
+ break;
+ case 3:
+ t4_write_reg(adap,
+ MPS_TRC_FILTER3_RSS_CONTROL_A, j);
+ break;
+ }
+ continue;
+ }
+ if (!strncmp(word, "snaplen=", 8)) {
+ end = (char *)word + 8;
+ ret = kstrtoul(end, 10, (unsigned long *)&j);
+ if (ret || j > 9600) {
+inval: count = -EINVAL;
+ goto out;
+ }
+ tp.snap_len = j;
+ continue;
+ }
+ if (!strncmp(word, "minlen=", 7)) {
+ end = (char *)word + 7;
+ ret = kstrtoul(end, 10, (unsigned long *)&j);
+ if (ret || j > TFMINPKTSIZE_M)
+ goto inval;
+ tp.min_len = j;
+ continue;
+ }
+ if (!strcmp(word, "not")) {
+ tp.invert = !tp.invert;
+ continue;
+ }
+ if (!strncmp(word, "loopback", 8) && tp.port == TRC_PORT_NONE) {
+ if (word[8] < '0' || word[8] > '3' || word[9])
+ goto inval;
+ tp.port = word[8] - '0' + 8;
+ continue;
+ }
+ if (!strncmp(word, "tx", 2) && tp.port == TRC_PORT_NONE) {
+ if (word[2] < '0' || word[2] > '3' || word[3])
+ goto inval;
+ tp.port = word[2] - '0' + 4;
+ if (adap->chan_map[tp.port & 3] >= MAX_NPORTS)
+ goto inval;
+ continue;
+ }
+ if (!strncmp(word, "rx", 2) && tp.port == TRC_PORT_NONE) {
+ if (word[2] < '0' || word[2] > '3' || word[3])
+ goto inval;
+ tp.port = word[2] - '0';
+ if (adap->chan_map[tp.port] >= MAX_NPORTS)
+ goto inval;
+ continue;
+ }
+ if (!isxdigit(*word))
+ goto inval;
+
+ /* we have found a trace pattern */
+ if (i) { /* split pattern */
+ if (tp.skip_len) /* too many splits */
+ goto inval;
+ tp.skip_ofst = i / 16;
+ }
+
+ data = &tp.data[i / 8];
+ mask = &tp.mask[i / 8];
+ j = i;
+
+ while (isxdigit(*word)) {
+ if (i >= TRACE_LEN * 2) {
+ count = -EFBIG;
+ goto out;
+ }
+ *data = (*data << 4) + xdigit2int(*word++);
+ if (++i % 8 == 0)
+ data++;
+ }
+ if (*word == '/') {
+ word++;
+ while (isxdigit(*word)) {
+ if (j >= i) /* mask longer than data */
+ goto inval;
+ *mask = (*mask << 4) + xdigit2int(*word++);
+ if (++j % 8 == 0)
+ mask++;
+ }
+ if (i != j) /* mask shorter than data */
+ goto inval;
+ } else { /* no mask, use all 1s */
+ for ( ; i - j >= 8; j += 8)
+ *mask++ = 0xffffffff;
+ if (i % 8)
+ *mask = (1 << (i % 8) * 4) - 1;
+ }
+ if (*word == '@') {
+ end = (char *)word + 1;
+ ret = kstrtoul(end, 10, (unsigned long *)&j);
+ if (*end && *end != '\n')
+ goto inval;
+ if (j & 7) /* doesn't start at multiple of 8 */
+ goto inval;
+ j /= 8;
+ if (j < tp.skip_ofst) /* overlaps earlier pattern */
+ goto inval;
+ if (j - tp.skip_ofst > 31) /* skip too big */
+ goto inval;
+ tp.skip_len = j - tp.skip_ofst;
+ }
+ if (i % 8) {
+ *data <<= (8 - i % 8) * 4;
+ *mask <<= (8 - i % 8) * 4;
+ i = (i + 15) & ~15; /* 8-byte align */
+ }
+ }
+
+ if (tp.port == TRC_PORT_NONE)
+ goto inval;
+
+apply:
+ i = t4_set_trace_filter(adap, &tp, trcidx, enable);
+ if (i)
+ count = i;
+out:
+ kfree(s);
+ return count;
+}
+
+static const struct file_operations mps_trc_debugfs_fops = {
+ .owner = THIS_MODULE,
+ .open = mps_trc_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+ .write = mps_trc_write
+};
+
static ssize_t flash_read(struct file *file, char __user *buf, size_t count,
loff_t *ppos)
{
{ "mbox5", &mbox_debugfs_fops, S_IRUSR | S_IWUSR, 5 },
{ "mbox6", &mbox_debugfs_fops, S_IRUSR | S_IWUSR, 6 },
{ "mbox7", &mbox_debugfs_fops, S_IRUSR | S_IWUSR, 7 },
+ { "trace0", &mps_trc_debugfs_fops, S_IRUSR | S_IWUSR, 0 },
+ { "trace1", &mps_trc_debugfs_fops, S_IRUSR | S_IWUSR, 1 },
+ { "trace2", &mps_trc_debugfs_fops, S_IRUSR | S_IWUSR, 2 },
+ { "trace3", &mps_trc_debugfs_fops, S_IRUSR | S_IWUSR, 3 },
{ "l2t", &t4_l2t_fops, S_IRUSR, 0},
{ "mps_tcam", &mps_tcam_debugfs_fops, S_IRUSR, 0 },
{ "rss", &rss_debugfs_fops, S_IRUSR, 0 },
&flash_debugfs_fops, adap->params.sf_size);
debugfs_create_bool("use_backdoor", S_IWUSR | S_IRUSR,
adap->debugfs_root, &adap->use_bd);
+ debugfs_create_bool("trace_rss", S_IWUSR | S_IRUSR,
+ adap->debugfs_root, &adap->trace_rss);
return 0;
}
}
}
+/**
+ * t4_set_trace_filter - configure one of the tracing filters
+ * @adap: the adapter
+ * @tp: the desired trace filter parameters
+ * @idx: which filter to configure
+ * @enable: whether to enable or disable the filter
+ *
+ * Configures one of the tracing filters available in HW. If @enable is
+ * %0 @tp is not examined and may be %NULL. The user is responsible to
+ * set the single/multiple trace mode by writing to MPS_TRC_CFG_A register
+ */
+int t4_set_trace_filter(struct adapter *adap, const struct trace_params *tp,
+ int idx, int enable)
+{
+ int i, ofst = idx * 4;
+ u32 data_reg, mask_reg, cfg;
+ u32 multitrc = TRCMULTIFILTER_F;
+
+ if (!enable) {
+ t4_write_reg(adap, MPS_TRC_FILTER_MATCH_CTL_A_A + ofst, 0);
+ return 0;
+ }
+
+ cfg = t4_read_reg(adap, MPS_TRC_CFG_A);
+ if (cfg & TRCMULTIFILTER_F) {
+ /* If multiple tracers are enabled, then maximum
+ * capture size is 2.5KB (FIFO size of a single channel)
+ * minus 2 flits for CPL_TRACE_PKT header.
+ */
+ if (tp->snap_len > ((10 * 1024 / 4) - (2 * 8)))
+ return -EINVAL;
+ } else {
+ /* If multiple tracers are disabled, to avoid deadlocks
+ * maximum packet capture size of 9600 bytes is recommended.
+ * Also in this mode, only trace0 can be enabled and running.
+ */
+ multitrc = 0;
+ if (tp->snap_len > 9600 || idx)
+ return -EINVAL;
+ }
+
+ if (tp->port > (is_t4(adap->params.chip) ? 11 : 19) || tp->invert > 1 ||
+ tp->skip_len > TFLENGTH_M || tp->skip_ofst > TFOFFSET_M ||
+ tp->min_len > TFMINPKTSIZE_M)
+ return -EINVAL;
+
+ /* stop the tracer we'll be changing */
+ t4_write_reg(adap, MPS_TRC_FILTER_MATCH_CTL_A_A + ofst, 0);
+
+ idx *= (MPS_TRC_FILTER1_MATCH_A - MPS_TRC_FILTER0_MATCH_A);
+ data_reg = MPS_TRC_FILTER0_MATCH_A + idx;
+ mask_reg = MPS_TRC_FILTER0_DONT_CARE_A + idx;
+
+ for (i = 0; i < TRACE_LEN / 4; i++, data_reg += 4, mask_reg += 4) {
+ t4_write_reg(adap, data_reg, tp->data[i]);
+ t4_write_reg(adap, mask_reg, ~tp->mask[i]);
+ }
+ t4_write_reg(adap, MPS_TRC_FILTER_MATCH_CTL_B_A + ofst,
+ TFCAPTUREMAX_V(tp->snap_len) |
+ TFMINPKTSIZE_V(tp->min_len));
+ t4_write_reg(adap, MPS_TRC_FILTER_MATCH_CTL_A_A + ofst,
+ TFOFFSET_V(tp->skip_ofst) | TFLENGTH_V(tp->skip_len) |
+ (is_t4(adap->params.chip) ?
+ TFPORT_V(tp->port) | TFEN_F | TFINVERTMATCH_V(tp->invert) :
+ T5_TFPORT_V(tp->port) | T5_TFEN_F |
+ T5_TFINVERTMATCH_V(tp->invert)));
+
+ return 0;
+}
+
+/**
+ * t4_get_trace_filter - query one of the tracing filters
+ * @adap: the adapter
+ * @tp: the current trace filter parameters
+ * @idx: which trace filter to query
+ * @enabled: non-zero if the filter is enabled
+ *
+ * Returns the current settings of one of the HW tracing filters.
+ */
+void t4_get_trace_filter(struct adapter *adap, struct trace_params *tp, int idx,
+ int *enabled)
+{
+ u32 ctla, ctlb;
+ int i, ofst = idx * 4;
+ u32 data_reg, mask_reg;
+
+ ctla = t4_read_reg(adap, MPS_TRC_FILTER_MATCH_CTL_A_A + ofst);
+ ctlb = t4_read_reg(adap, MPS_TRC_FILTER_MATCH_CTL_B_A + ofst);
+
+ if (is_t4(adap->params.chip)) {
+ *enabled = !!(ctla & TFEN_F);
+ tp->port = TFPORT_G(ctla);
+ tp->invert = !!(ctla & TFINVERTMATCH_F);
+ } else {
+ *enabled = !!(ctla & T5_TFEN_F);
+ tp->port = T5_TFPORT_G(ctla);
+ tp->invert = !!(ctla & T5_TFINVERTMATCH_F);
+ }
+ tp->snap_len = TFCAPTUREMAX_G(ctlb);
+ tp->min_len = TFMINPKTSIZE_G(ctlb);
+ tp->skip_ofst = TFOFFSET_G(ctla);
+ tp->skip_len = TFLENGTH_G(ctla);
+
+ ofst = (MPS_TRC_FILTER1_MATCH_A - MPS_TRC_FILTER0_MATCH_A) * idx;
+ data_reg = MPS_TRC_FILTER0_MATCH_A + ofst;
+ mask_reg = MPS_TRC_FILTER0_DONT_CARE_A + ofst;
+
+ for (i = 0; i < TRACE_LEN / 4; i++, data_reg += 4, mask_reg += 4) {
+ tp->mask[i] = ~t4_read_reg(adap, mask_reg);
+ tp->data[i] = t4_read_reg(adap, data_reg) & tp->mask[i];
+ }
+}
+
/**
* t4_pmtx_get_stats - returns the HW stats from PMTX
* @adap: the adapter
#define TRCMULTIFILTER_F TRCMULTIFILTER_V(1U)
#define MPS_TRC_RSS_CONTROL_A 0x9808
+#define MPS_TRC_FILTER1_RSS_CONTROL_A 0x9ff4
+#define MPS_TRC_FILTER2_RSS_CONTROL_A 0x9ffc
+#define MPS_TRC_FILTER3_RSS_CONTROL_A 0xa004
#define MPS_T5_TRC_RSS_CONTROL_A 0xa00c
#define RSSCONTROL_S 16
#define QUEUENUMBER_S 0
#define QUEUENUMBER_V(x) ((x) << QUEUENUMBER_S)
+#define TFINVERTMATCH_S 24
+#define TFINVERTMATCH_V(x) ((x) << TFINVERTMATCH_S)
+#define TFINVERTMATCH_F TFINVERTMATCH_V(1U)
+
+#define TFEN_S 22
+#define TFEN_V(x) ((x) << TFEN_S)
+#define TFEN_F TFEN_V(1U)
+
+#define TFPORT_S 18
+#define TFPORT_M 0xfU
+#define TFPORT_V(x) ((x) << TFPORT_S)
+#define TFPORT_G(x) (((x) >> TFPORT_S) & TFPORT_M)
+
+#define TFLENGTH_S 8
+#define TFLENGTH_M 0x1fU
+#define TFLENGTH_V(x) ((x) << TFLENGTH_S)
+#define TFLENGTH_G(x) (((x) >> TFLENGTH_S) & TFLENGTH_M)
+
+#define TFOFFSET_S 0
+#define TFOFFSET_M 0x1fU
+#define TFOFFSET_V(x) ((x) << TFOFFSET_S)
+#define TFOFFSET_G(x) (((x) >> TFOFFSET_S) & TFOFFSET_M)
+
+#define T5_TFINVERTMATCH_S 25
+#define T5_TFINVERTMATCH_V(x) ((x) << T5_TFINVERTMATCH_S)
+#define T5_TFINVERTMATCH_F T5_TFINVERTMATCH_V(1U)
+
+#define T5_TFEN_S 23
+#define T5_TFEN_V(x) ((x) << T5_TFEN_S)
+#define T5_TFEN_F T5_TFEN_V(1U)
+
+#define T5_TFPORT_S 18
+#define T5_TFPORT_M 0x1fU
+#define T5_TFPORT_V(x) ((x) << T5_TFPORT_S)
+#define T5_TFPORT_G(x) (((x) >> T5_TFPORT_S) & T5_TFPORT_M)
+
+#define MPS_TRC_FILTER_MATCH_CTL_A_A 0x9810
+#define MPS_TRC_FILTER_MATCH_CTL_B_A 0x9820
+
+#define TFMINPKTSIZE_S 16
+#define TFMINPKTSIZE_M 0x1ffU
+#define TFMINPKTSIZE_V(x) ((x) << TFMINPKTSIZE_S)
+#define TFMINPKTSIZE_G(x) (((x) >> TFMINPKTSIZE_S) & TFMINPKTSIZE_M)
+
+#define TFCAPTUREMAX_S 0
+#define TFCAPTUREMAX_M 0x3fffU
+#define TFCAPTUREMAX_V(x) ((x) << TFCAPTUREMAX_S)
+#define TFCAPTUREMAX_G(x) (((x) >> TFCAPTUREMAX_S) & TFCAPTUREMAX_M)
+
+#define MPS_TRC_FILTER0_MATCH_A 0x9c00
+#define MPS_TRC_FILTER0_DONT_CARE_A 0x9c80
+#define MPS_TRC_FILTER1_MATCH_A 0x9d00
+
#define TP_RSS_CONFIG_A 0x7df0
#define TNL4TUPENIPV6_S 31
projects / cascardo / linux.git / commitdiff