diff options
Diffstat (limited to 'hw/intc/xive2.c')
| -rw-r--r-- | hw/intc/xive2.c | 76 |
1 files changed, 60 insertions, 16 deletions
diff --git a/hw/intc/xive2.c b/hw/intc/xive2.c index 34628f2922..5fa8e1b3fb 100644 --- a/hw/intc/xive2.c +++ b/hw/intc/xive2.c @@ -1121,13 +1121,40 @@ static bool xive2_vp_match_mask(uint32_t cam1, uint32_t cam2, return (cam1 & vp_mask) == (cam2 & vp_mask); } +static uint8_t xive2_get_vp_block_mask(uint32_t nvt_blk, bool crowd) +{ + uint8_t size, block_mask = 0b1111; + + /* 3 supported crowd sizes: 2, 4, 16 */ + if (crowd) { + size = xive_get_vpgroup_size(nvt_blk); + if (size == 8) { + qemu_log_mask(LOG_GUEST_ERROR, "XIVE: Invalid crowd size of 8n"); + return block_mask; + } + block_mask &= ~(size - 1); + } + return block_mask; +} + +static uint32_t xive2_get_vp_index_mask(uint32_t nvt_index, bool cam_ignore) +{ + uint32_t index_mask = 0xFFFFFF; /* 24 bits */ + + if (cam_ignore) { + index_mask &= ~(xive_get_vpgroup_size(nvt_index) - 1); + } + return index_mask; +} + /* * The thread context register words are in big-endian format. */ int xive2_presenter_tctx_match(XivePresenter *xptr, XiveTCTX *tctx, uint8_t format, uint8_t nvt_blk, uint32_t nvt_idx, - bool cam_ignore, uint32_t logic_serv) + bool crowd, bool cam_ignore, + uint32_t logic_serv) { uint32_t cam = xive2_nvp_cam_line(nvt_blk, nvt_idx); uint32_t qw3w2 = xive_tctx_word2(&tctx->regs[TM_QW3_HV_PHYS]); @@ -1135,7 +1162,8 @@ int xive2_presenter_tctx_match(XivePresenter *xptr, XiveTCTX *tctx, uint32_t qw1w2 = xive_tctx_word2(&tctx->regs[TM_QW1_OS]); uint32_t qw0w2 = xive_tctx_word2(&tctx->regs[TM_QW0_USER]); - uint32_t vp_mask = 0xFFFFFFFF; + uint32_t index_mask, vp_mask; + uint8_t block_mask; if (format == 0) { /* @@ -1143,9 +1171,9 @@ int xive2_presenter_tctx_match(XivePresenter *xptr, XiveTCTX *tctx, * i=1: VP-group notification (bits ignored at the end of the * NVT identifier) */ - if (cam_ignore) { - vp_mask = ~(xive_get_vpgroup_size(nvt_idx) - 1); - } + block_mask = xive2_get_vp_block_mask(nvt_blk, crowd); + index_mask = xive2_get_vp_index_mask(nvt_idx, cam_ignore); + vp_mask = xive2_nvp_cam_line(block_mask, index_mask); /* For VP-group notifications, threads with LGS=0 are excluded */ @@ -1277,6 +1305,12 @@ static void xive2_router_end_notify(Xive2Router *xrtr, uint8_t end_blk, return; } + if (xive2_end_is_crowd(&end) & !xive2_end_is_ignore(&end)) { + qemu_log_mask(LOG_GUEST_ERROR, + "XIVE: invalid END, 'crowd' bit requires 'ignore' bit\n"); + return; + } + if (xive2_end_is_enqueue(&end)) { xive2_end_enqueue(&end, end_data); /* Enqueuing event data modifies the EQ toggle and index */ @@ -1325,7 +1359,7 @@ static void xive2_router_end_notify(Xive2Router *xrtr, uint8_t end_blk, nvp_idx = xive_get_field32(END2_W6_VP_OFFSET, end.w6); found = xive_presenter_notify(xrtr->xfb, format, nvp_blk, nvp_idx, - xive2_end_is_ignore(&end), + xive2_end_is_crowd(&end), xive2_end_is_ignore(&end), priority, xive_get_field32(END2_W7_F1_LOG_SERVER_ID, end.w7), &precluded); @@ -1377,17 +1411,24 @@ static void xive2_router_end_notify(Xive2Router *xrtr, uint8_t end_blk, nvp.w2 = xive_set_field32(NVP2_W2_IPB, nvp.w2, ipb); xive2_router_write_nvp(xrtr, nvp_blk, nvp_idx, &nvp, 2); } else { - Xive2Nvgc nvg; + Xive2Nvgc nvgc; uint32_t backlog; + bool crowd; - /* For groups, the per-priority backlog counters are in the NVG */ - if (xive2_router_get_nvgc(xrtr, false, nvp_blk, nvp_idx, &nvg)) { - qemu_log_mask(LOG_GUEST_ERROR, "XIVE: no NVG %x/%x\n", - nvp_blk, nvp_idx); + crowd = xive2_end_is_crowd(&end); + + /* + * For groups and crowds, the per-priority backlog + * counters are stored in the NVG/NVC structures + */ + if (xive2_router_get_nvgc(xrtr, crowd, + nvp_blk, nvp_idx, &nvgc)) { + qemu_log_mask(LOG_GUEST_ERROR, "XIVE: no %s %x/%x\n", + crowd ? "NVC" : "NVG", nvp_blk, nvp_idx); return; } - if (!xive2_nvgc_is_valid(&nvg)) { + if (!xive2_nvgc_is_valid(&nvgc)) { qemu_log_mask(LOG_GUEST_ERROR, "XIVE: NVG %x/%x is invalid\n", nvp_blk, nvp_idx); return; @@ -1399,13 +1440,16 @@ static void xive2_router_end_notify(Xive2Router *xrtr, uint8_t end_blk, * incremented. broadcast will set the LSMFB field of the TIMA of * relevant threads so that they know an interrupt is pending. */ - backlog = xive2_nvgc_get_backlog(&nvg, priority) + 1; - xive2_nvgc_set_backlog(&nvg, priority, backlog); - xive2_router_write_nvgc(xrtr, false, nvp_blk, nvp_idx, &nvg); + backlog = xive2_nvgc_get_backlog(&nvgc, priority) + 1; + xive2_nvgc_set_backlog(&nvgc, priority, backlog); + xive2_router_write_nvgc(xrtr, crowd, nvp_blk, nvp_idx, &nvgc); if (backlog == 1) { XiveFabricClass *xfc = XIVE_FABRIC_GET_CLASS(xrtr->xfb); - xfc->broadcast(xrtr->xfb, nvp_blk, nvp_idx, priority); + xfc->broadcast(xrtr->xfb, nvp_blk, nvp_idx, + xive2_end_is_crowd(&end), + xive2_end_is_ignore(&end), + priority); if (!xive2_end_is_precluded_escalation(&end)) { /* |