d/freebsd-dev
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

bhyve amd: amdvi_dump_cmds() log the command for which the command completion failed. Completion is checked in poll mode although it can be done using interrupts.

Browse Source 
No need to log all the commands in command ring but only the last one for which completion failed.

Reported by: np@freebsd.org
Reviewed by: np, markj
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D22566
This commit is contained in:
Anish Gupta 2019-12-01 04:00:08 +00:00
parent ac3f30a429
commit 84474332d3
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=355258
1 changed files with 7 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
sys/amd64/vmm/amd/amdvi_hw.c
View File

@ -66,7 +66,7 @@ SYSCTL_NODE(_hw_vmm, OID_AUTO, amdvi, CTLFLAG_RW, NULL, NULL);
/* Print RID or device ID in PCI string format. */
#define RID2PCI_STR(d) PCI_RID2BUS(d), PCI_RID2SLOT(d), PCI_RID2FUNC(d)
static void amdvi_dump_cmds(struct amdvi_softc *softc);
static void amdvi_dump_cmds(struct amdvi_softc *softc, int count);
static void amdvi_print_dev_cap(struct amdvi_softc *softc);
MALLOC_DEFINE(M_AMDVI, "amdvi", "amdvi");
@ -321,9 +321,7 @@ amdvi_cmd_cmp(struct amdvi_softc *softc, const uint64_t data)
pa = vtophys(&softc->cmp_data);
cmd->opcode = AMDVI_CMP_WAIT_OPCODE;
cmd->word0 = (pa & 0xFFFFFFF8) |
(AMDVI_CMP_WAIT_STORE);
//(AMDVI_CMP_WAIT_FLUSH | AMDVI_CMP_WAIT_STORE);
cmd->word0 = (pa & 0xFFFFFFF8) | AMDVI_CMP_WAIT_STORE;
cmd->word1 = (pa >> 32) & 0xFFFFF;
cmd->addr = data;
@ -492,26 +490,26 @@ amdvi_wait(struct amdvi_softc *softc)
device_printf(softc->dev, "Error: completion failed"
" tail:0x%x, head:0x%x.\n",
ctrl->cmd_tail, ctrl->cmd_head);
amdvi_dump_cmds(softc);
/* Dump the last command. */
amdvi_dump_cmds(softc, 1);
}
static void
amdvi_dump_cmds(struct amdvi_softc *softc)
amdvi_dump_cmds(struct amdvi_softc *softc, int count)
{
struct amdvi_ctrl *ctrl;
struct amdvi_cmd *cmd;
int off, i;
ctrl = softc->ctrl;
device_printf(softc->dev, "Dump all the commands:\n");
device_printf(softc->dev, "Dump last %d command(s):\n", count);
/*
* If h/w is stuck in completion, it is the previous command,
* start dumping from previous command onward.
*/
off = MOD_DEC(ctrl->cmd_head, sizeof(struct amdvi_cmd),
softc->cmd_max);
for (i = 0; off != ctrl->cmd_tail &&
i < softc->cmd_max; i++) {
for (i = 0; off != ctrl->cmd_tail && i < count; i++) {
cmd = (struct amdvi_cmd *)((uint8_t *)softc->cmd + off);
printf(" [CMD%d, off:0x%x] opcode= 0x%x 0x%x"
" 0x%x 0x%lx\n", i, off, cmd->opcode,