The branch stable/14 has been updated by np:
URL:
https://cgit.FreeBSD.org/src/commit/?id=e42a182bb7f69d53ea35dfe22e16a1944c280066
commit e42a182bb7f69d53ea35dfe22e16a1944c280066
Author: John Baldwin <j...@freebsd.org>
AuthorDate: 2024-07-03 15:05:11 +0000
Commit: Navdeep Parhar <n...@freebsd.org>
CommitDate: 2024-10-21 18:49:27 +0000
cxgbe: Add a 'show t4 memdump' DDB command
Reviewed by: np
Sponsored by: Chelsio Communications
Differential Revision: https://reviews.freebsd.org/D45187
(cherry picked from commit 1edf61f395d98a5abb7d6f38e5e64722b4ddf351)
---
sys/dev/cxgbe/t4_main.c | 76 ++++++++++++++++++++++++++++++++++++++++++-------
1 file changed, 66 insertions(+), 10 deletions(-)
diff --git a/sys/dev/cxgbe/t4_main.c b/sys/dev/cxgbe/t4_main.c
index 769d4778a8d2..3829ea6501cb 100644
--- a/sys/dev/cxgbe/t4_main.c
+++ b/sys/dev/cxgbe/t4_main.c
@@ -12939,30 +12939,26 @@ tweak_tunables(void)
#ifdef DDB
static void
-t4_dump_tcb(struct adapter *sc, int tid)
+t4_dump_mem(struct adapter *sc, u_int addr, u_int len)
{
- uint32_t base, i, j, off, pf, reg, save, tcb_addr, win_pos;
+ uint32_t base, j, off, pf, reg, save, win_pos;
reg = PCIE_MEM_ACCESS_REG(A_PCIE_MEM_ACCESS_OFFSET, 2);
save = t4_read_reg(sc, reg);
base = sc->memwin[2].mw_base;
- /* Dump TCB for the tid */
- tcb_addr = t4_read_reg(sc, A_TP_CMM_TCB_BASE);
- tcb_addr += tid * TCB_SIZE;
-
if (is_t4(sc)) {
pf = 0;
- win_pos = tcb_addr & ~0xf; /* start must be 16B aligned */
+ win_pos = addr & ~0xf; /* start must be 16B aligned */
} else {
pf = V_PFNUM(sc->pf);
- win_pos = tcb_addr & ~0x7f; /* start must be 128B aligned */
+ win_pos = addr & ~0x7f; /* start must be 128B aligned */
}
+ off = addr - win_pos;
t4_write_reg(sc, reg, win_pos | pf);
t4_read_reg(sc, reg);
- off = tcb_addr - win_pos;
- for (i = 0; i < 4; i++) {
+ while (len > 0 && !db_pager_quit) {
uint32_t buf[8];
for (j = 0; j < 8; j++, off += 4)
buf[j] = htonl(t4_read_reg(sc, base + off));
@@ -12970,12 +12966,27 @@ t4_dump_tcb(struct adapter *sc, int tid)
db_printf("%08x %08x %08x %08x %08x %08x %08x %08x\n",
buf[0], buf[1], buf[2], buf[3], buf[4], buf[5], buf[6],
buf[7]);
+ if (len <= sizeof(buf))
+ len = 0;
+ else
+ len -= sizeof(buf);
}
t4_write_reg(sc, reg, save);
t4_read_reg(sc, reg);
}
+static void
+t4_dump_tcb(struct adapter *sc, int tid)
+{
+ uint32_t tcb_addr;
+
+ /* Dump TCB for the tid */
+ tcb_addr = t4_read_reg(sc, A_TP_CMM_TCB_BASE);
+ tcb_addr += tid * TCB_SIZE;
+ t4_dump_mem(sc, tcb_addr, TCB_SIZE);
+}
+
static void
t4_dump_devlog(struct adapter *sc)
{
@@ -13107,6 +13118,51 @@ DB_TABLE_COMMAND_FLAGS(show_t4, tcb, db_show_t4tcb,
CS_OWN)
t4_dump_tcb(device_get_softc(dev), tid);
}
+
+DB_TABLE_COMMAND_FLAGS(show_t4, memdump, db_show_memdump, CS_OWN)
+{
+ device_t dev;
+ int radix, t;
+ bool valid;
+
+ valid = false;
+ radix = db_radix;
+ db_radix = 10;
+ t = db_read_token();
+ if (t == tIDENT) {
+ dev = device_lookup_by_name(db_tok_string);
+ t = db_read_token();
+ if (t == tNUMBER) {
+ addr = db_tok_number;
+ t = db_read_token();
+ if (t == tNUMBER) {
+ count = db_tok_number;
+ valid = true;
+ }
+ }
+ }
+ db_radix = radix;
+ db_skip_to_eol();
+ if (!valid) {
+ db_printf("usage: show t4 memdump <nexus> <addr> <len>\n");
+ return;
+ }
+
+ if (dev == NULL) {
+ db_printf("device not found\n");
+ return;
+ }
+ if (addr < 0) {
+ db_printf("invalid address\n");
+ return;
+ }
+ if (count <= 0) {
+ db_printf("invalid length\n");
+ return;
+ }
+
+ t4_dump_mem(device_get_softc(dev), addr, count);
+}
#endif
static eventhandler_tag vxlan_start_evtag;
