Date: Wed, 15 Jan 2020 02:31:04 +0000 (UTC) From: Anish Gupta <anish@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-12@freebsd.org Subject: svn commit: r356746 - stable/12/sys/amd64/vmm/amd Message-ID: <202001150231.00F2V4bs079334@repo.freebsd.org>
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Author: anish Date: Wed Jan 15 02:31:03 2020 New Revision: 356746 URL: https://svnweb.freebsd.org/changeset/base/356746 Log: MFC r355258: Bhyve AMD IOMMU log the last timeout command. Differential Revision: https://reviews.freebsd.org/D22566 Modified: stable/12/sys/amd64/vmm/amd/amdvi_hw.c Modified: stable/12/sys/amd64/vmm/amd/amdvi_hw.c ============================================================================== --- stable/12/sys/amd64/vmm/amd/amdvi_hw.c Wed Jan 15 01:34:05 2020 (r356745) +++ stable/12/sys/amd64/vmm/amd/amdvi_hw.c Wed Jan 15 02:31:03 2020 (r356746) @@ -66,7 +66,7 @@ SYSCTL_NODE(_hw_vmm, OID_AUTO, amdvi, CTLFLAG_RW, 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_ 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,
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