diff options
Diffstat (limited to 'hw/intc/xive.c')
| -rw-r--r-- | hw/intc/xive.c | 113 |
1 files changed, 103 insertions, 10 deletions
diff --git a/hw/intc/xive.c b/hw/intc/xive.c index daa7badc84..a0b87001da 100644 --- a/hw/intc/xive.c +++ b/hw/intc/xive.c @@ -54,6 +54,8 @@ static uint8_t exception_mask(uint8_t ring) switch (ring) { case TM_QW1_OS: return TM_QW1_NSR_EO; + case TM_QW3_HV_PHYS: + return TM_QW3_NSR_HE; default: g_assert_not_reached(); } @@ -88,7 +90,16 @@ static void xive_tctx_notify(XiveTCTX *tctx, uint8_t ring) uint8_t *regs = &tctx->regs[ring]; if (regs[TM_PIPR] < regs[TM_CPPR]) { - regs[TM_NSR] |= exception_mask(ring); + switch (ring) { + case TM_QW1_OS: + regs[TM_NSR] |= TM_QW1_NSR_EO; + break; + case TM_QW3_HV_PHYS: + regs[TM_NSR] |= (TM_QW3_NSR_HE_PHYS << 6); + break; + default: + g_assert_not_reached(); + } qemu_irq_raise(tctx->output); } } @@ -109,6 +120,38 @@ static void xive_tctx_set_cppr(XiveTCTX *tctx, uint8_t ring, uint8_t cppr) * XIVE Thread Interrupt Management Area (TIMA) */ +static void xive_tm_set_hv_cppr(XiveTCTX *tctx, hwaddr offset, + uint64_t value, unsigned size) +{ + xive_tctx_set_cppr(tctx, TM_QW3_HV_PHYS, value & 0xff); +} + +static uint64_t xive_tm_ack_hv_reg(XiveTCTX *tctx, hwaddr offset, unsigned size) +{ + return xive_tctx_accept(tctx, TM_QW3_HV_PHYS); +} + +static uint64_t xive_tm_pull_pool_ctx(XiveTCTX *tctx, hwaddr offset, + unsigned size) +{ + uint64_t ret; + + ret = tctx->regs[TM_QW2_HV_POOL + TM_WORD2] & TM_QW2W2_POOL_CAM; + tctx->regs[TM_QW2_HV_POOL + TM_WORD2] &= ~TM_QW2W2_POOL_CAM; + return ret; +} + +static void xive_tm_vt_push(XiveTCTX *tctx, hwaddr offset, + uint64_t value, unsigned size) +{ + tctx->regs[TM_QW3_HV_PHYS + TM_WORD2] = value & 0xff; +} + +static uint64_t xive_tm_vt_poll(XiveTCTX *tctx, hwaddr offset, unsigned size) +{ + return tctx->regs[TM_QW3_HV_PHYS + TM_WORD2] & 0xff; +} + /* * Define an access map for each page of the TIMA that we will use in * the memory region ops to filter values when doing loads and stores @@ -288,10 +331,16 @@ static const XiveTmOp xive_tm_operations[] = { * effects */ { XIVE_TM_OS_PAGE, TM_QW1_OS + TM_CPPR, 1, xive_tm_set_os_cppr, NULL }, + { XIVE_TM_HV_PAGE, TM_QW3_HV_PHYS + TM_CPPR, 1, xive_tm_set_hv_cppr, NULL }, + { XIVE_TM_HV_PAGE, TM_QW3_HV_PHYS + TM_WORD2, 1, xive_tm_vt_push, NULL }, + { XIVE_TM_HV_PAGE, TM_QW3_HV_PHYS + TM_WORD2, 1, NULL, xive_tm_vt_poll }, /* MMIOs above 2K : special operations with side effects */ { XIVE_TM_OS_PAGE, TM_SPC_ACK_OS_REG, 2, NULL, xive_tm_ack_os_reg }, { XIVE_TM_OS_PAGE, TM_SPC_SET_OS_PENDING, 1, xive_tm_set_os_pending, NULL }, + { XIVE_TM_HV_PAGE, TM_SPC_ACK_HV_REG, 2, NULL, xive_tm_ack_hv_reg }, + { XIVE_TM_HV_PAGE, TM_SPC_PULL_POOL_CTX, 4, NULL, xive_tm_pull_pool_ctx }, + { XIVE_TM_HV_PAGE, TM_SPC_PULL_POOL_CTX, 8, NULL, xive_tm_pull_pool_ctx }, }; static const XiveTmOp *xive_tm_find_op(hwaddr offset, unsigned size, bool write) @@ -317,14 +366,13 @@ static const XiveTmOp *xive_tm_find_op(hwaddr offset, unsigned size, bool write) /* * TIMA MMIO handlers */ -static void xive_tm_write(void *opaque, hwaddr offset, - uint64_t value, unsigned size) +void xive_tctx_tm_write(XiveTCTX *tctx, hwaddr offset, uint64_t value, + unsigned size) { - XiveTCTX *tctx = xive_router_get_tctx(XIVE_ROUTER(opaque), current_cpu); const XiveTmOp *xto; /* - * TODO: check V bit in Q[0-3]W2, check PTER bit associated with CPU + * TODO: check V bit in Q[0-3]W2 */ /* @@ -356,13 +404,12 @@ static void xive_tm_write(void *opaque, hwaddr offset, xive_tm_raw_write(tctx, offset, value, size); } -static uint64_t xive_tm_read(void *opaque, hwaddr offset, unsigned size) +uint64_t xive_tctx_tm_read(XiveTCTX *tctx, hwaddr offset, unsigned size) { - XiveTCTX *tctx = xive_router_get_tctx(XIVE_ROUTER(opaque), current_cpu); const XiveTmOp *xto; /* - * TODO: check V bit in Q[0-3]W2, check PTER bit associated with CPU + * TODO: check V bit in Q[0-3]W2 */ /* @@ -392,6 +439,21 @@ static uint64_t xive_tm_read(void *opaque, hwaddr offset, unsigned size) return xive_tm_raw_read(tctx, offset, size); } +static void xive_tm_write(void *opaque, hwaddr offset, + uint64_t value, unsigned size) +{ + XiveTCTX *tctx = xive_router_get_tctx(XIVE_ROUTER(opaque), current_cpu); + + xive_tctx_tm_write(tctx, offset, value, size); +} + +static uint64_t xive_tm_read(void *opaque, hwaddr offset, unsigned size) +{ + XiveTCTX *tctx = xive_router_get_tctx(XIVE_ROUTER(opaque), current_cpu); + + return xive_tctx_tm_read(tctx, offset, size); +} + const MemoryRegionOps xive_tm_ops = { .read = xive_tm_read, .write = xive_tm_write, @@ -459,6 +521,8 @@ static void xive_tctx_reset(void *dev) */ tctx->regs[TM_QW1_OS + TM_PIPR] = ipb_to_pipr(tctx->regs[TM_QW1_OS + TM_IPB]); + tctx->regs[TM_QW3_HV_PHYS + TM_PIPR] = + ipb_to_pipr(tctx->regs[TM_QW3_HV_PHYS + TM_IPB]); } static void xive_tctx_realize(DeviceState *dev, Error **errp) @@ -1113,6 +1177,30 @@ XiveTCTX *xive_router_get_tctx(XiveRouter *xrtr, CPUState *cs) } /* + * By default on P9, the HW CAM line (23bits) is hardwired to : + * + * 0x000||0b1||4Bit chip number||7Bit Thread number. + * + * When the block grouping is enabled, the CAM line is changed to : + * + * 4Bit chip number||0x001||7Bit Thread number. + */ +static uint32_t hw_cam_line(uint8_t chip_id, uint8_t tid) +{ + return 1 << 11 | (chip_id & 0xf) << 7 | (tid & 0x7f); +} + +static bool xive_presenter_tctx_match_hw(XiveTCTX *tctx, + uint8_t nvt_blk, uint32_t nvt_idx) +{ + CPUPPCState *env = &POWERPC_CPU(tctx->cs)->env; + uint32_t pir = env->spr_cb[SPR_PIR].default_value; + + return hw_cam_line((pir >> 8) & 0xf, pir & 0x7f) == + hw_cam_line(nvt_blk, nvt_idx); +} + +/* * The thread context register words are in big-endian format. */ static int xive_presenter_tctx_match(XiveTCTX *tctx, uint8_t format, @@ -1120,6 +1208,7 @@ static int xive_presenter_tctx_match(XiveTCTX *tctx, uint8_t format, bool cam_ignore, uint32_t logic_serv) { uint32_t cam = xive_nvt_cam_line(nvt_blk, nvt_idx); + uint32_t qw3w2 = xive_tctx_word2(&tctx->regs[TM_QW3_HV_PHYS]); uint32_t qw2w2 = xive_tctx_word2(&tctx->regs[TM_QW2_HV_POOL]); uint32_t qw1w2 = xive_tctx_word2(&tctx->regs[TM_QW1_OS]); uint32_t qw0w2 = xive_tctx_word2(&tctx->regs[TM_QW0_USER]); @@ -1142,7 +1231,11 @@ static int xive_presenter_tctx_match(XiveTCTX *tctx, uint8_t format, /* F=0 & i=0: Specific NVT notification */ - /* TODO (PowerNV) : PHYS ring */ + /* PHYS ring */ + if ((be32_to_cpu(qw3w2) & TM_QW3W2_VT) && + xive_presenter_tctx_match_hw(tctx, nvt_blk, nvt_idx)) { + return TM_QW3_HV_PHYS; + } /* HV POOL ring */ if ((be32_to_cpu(qw2w2) & TM_QW2W2_VP) && @@ -1362,7 +1455,7 @@ static void xive_router_end_notify(XiveRouter *xrtr, uint8_t end_blk, /* TODO: Auto EOI. */ } -static void xive_router_notify(XiveNotifier *xn, uint32_t lisn) +void xive_router_notify(XiveNotifier *xn, uint32_t lisn) { XiveRouter *xrtr = XIVE_ROUTER(xn); uint8_t eas_blk = XIVE_SRCNO_BLOCK(lisn); |