When PC_TCTXT_CHIPID_OVERRIDE is configured, the PC_TCTXT_CHIPID field overrides the hardwired chip ID in the Powerbus operations and for CAM compares. This is typically used in the one block-per-chip configuration to associate a unique block id number to each IC of the system.
Simplify the model with a pnv_xive_block_id() helper and remove 'tctx_chipid' which becomes useless. The model does support multiple blocks per chip. Signed-off-by: Cédric Le Goater <c...@kaod.org> --- include/hw/ppc/pnv_xive.h | 3 -- hw/intc/pnv_xive.c | 68 ++++++++++++++++++++------------------- 2 files changed, 35 insertions(+), 36 deletions(-) diff --git a/include/hw/ppc/pnv_xive.h b/include/hw/ppc/pnv_xive.h index 4fdaa9247d65..f4c7caad40ee 100644 --- a/include/hw/ppc/pnv_xive.h +++ b/include/hw/ppc/pnv_xive.h @@ -72,9 +72,6 @@ typedef struct PnvXive { /* Interrupt controller registers */ uint64_t regs[0x300]; - /* Can be configured by FW */ - uint32_t tctx_chipid; - /* * Virtual Structure Descriptor tables : EAT, SBE, ENDT, NVTT, IRQ * These are in a SRAM protected by ECC. diff --git a/hw/intc/pnv_xive.c b/hw/intc/pnv_xive.c index 84fbfd8e27b0..6b7078aa4fde 100644 --- a/hw/intc/pnv_xive.c +++ b/hw/intc/pnv_xive.c @@ -83,13 +83,30 @@ static inline uint64_t SETFIELD(uint64_t mask, uint64_t word, return (word & ~mask) | ((value << ctz64(mask)) & mask); } +/* + * When PC_TCTXT_CHIPID_OVERRIDE is configured, the PC_TCTXT_CHIPID + * field overrides the hardwired chip ID in the Powerbus operations + * and for CAM compares + */ +static uint8_t pnv_xive_block_id(PnvXive *xive) +{ + uint8_t blk = xive->chip->chip_id; + uint64_t cfg_val = xive->regs[PC_TCTXT_CFG >> 3]; + + if (cfg_val & PC_TCTXT_CHIPID_OVERRIDE) { + blk = GETFIELD(PC_TCTXT_CHIPID, cfg_val); + } + + return blk; +} + /* * Remote access to controllers. HW uses MMIOs. For now, a simple scan * of the chips is good enough. * * TODO: Block scope support */ -static PnvXive *pnv_xive_get_ic(uint8_t blk) +static PnvXive *pnv_xive_get_remote(uint8_t blk) { PnvMachineState *pnv = PNV_MACHINE(qdev_get_machine()); int i; @@ -98,7 +115,7 @@ static PnvXive *pnv_xive_get_ic(uint8_t blk) Pnv9Chip *chip9 = PNV9_CHIP(pnv->chips[i]); PnvXive *xive = &chip9->xive; - if (xive->chip->chip_id == blk) { + if (pnv_xive_block_id(xive) == blk) { return xive; } } @@ -210,7 +227,7 @@ static uint64_t pnv_xive_vst_addr(PnvXive *xive, uint32_t type, uint8_t blk, /* Remote VST access */ if (GETFIELD(VSD_MODE, vsd) == VSD_MODE_FORWARD) { - xive = pnv_xive_get_ic(blk); + xive = pnv_xive_get_remote(blk); return xive ? pnv_xive_vst_addr(xive, type, blk, idx) : 0; } @@ -358,7 +375,10 @@ static int pnv_xive_get_eas(XiveRouter *xrtr, uint8_t blk, uint32_t idx, { PnvXive *xive = PNV_XIVE(xrtr); - if (pnv_xive_get_ic(blk) != xive) { + /* + * EAT lookups should be local to the IC + */ + if (pnv_xive_block_id(xive) != blk) { xive_error(xive, "VST: EAS %x is remote !?", XIVE_SRCNO(blk, idx)); return -1; } @@ -471,7 +491,7 @@ static PnvXive *pnv_xive_tm_get_xive(PowerPCCPU *cpu) static void pnv_xive_notify(XiveNotifier *xn, uint32_t srcno) { PnvXive *xive = PNV_XIVE(xn); - uint8_t blk = xive->chip->chip_id; + uint8_t blk = pnv_xive_block_id(xive); xive_router_notify(xn, XIVE_SRCNO(blk, srcno)); } @@ -835,20 +855,7 @@ static void pnv_xive_ic_reg_write(void *opaque, hwaddr offset, case PC_TCTXT_CFG: /* * TODO: block group support - * - * PC_TCTXT_CFG_BLKGRP_EN - * PC_TCTXT_CFG_HARD_CHIPID_BLK : - * Moves the chipid into block field for hardwired CAM compares. - * Block offset value is adjusted to 0b0..01 & ThrdId - * - * Will require changes in xive_presenter_tctx_match(). I am - * not sure how to handle that yet. */ - - /* Overrides hardwired chip ID with the chip ID field */ - if (val & PC_TCTXT_CHIPID_OVERRIDE) { - xive->tctx_chipid = GETFIELD(PC_TCTXT_CHIPID, val); - } break; case PC_TCTXT_TRACK: /* @@ -1665,7 +1672,8 @@ static void xive_nvt_pic_print_info(XiveNVT *nvt, uint32_t nvt_idx, void pnv_xive_pic_print_info(PnvXive *xive, Monitor *mon) { XiveRouter *xrtr = XIVE_ROUTER(xive); - uint8_t blk = xive->chip->chip_id; + uint8_t blk = pnv_xive_block_id(xive); + uint8_t chip_id = xive->chip->chip_id; uint32_t srcno0 = XIVE_SRCNO(blk, 0); uint32_t nr_ipis = pnv_xive_nr_ipis(xive, blk); XiveEAS eas; @@ -1673,12 +1681,12 @@ void pnv_xive_pic_print_info(PnvXive *xive, Monitor *mon) XiveNVT nvt; int i; - monitor_printf(mon, "XIVE[%x] Source %08x .. %08x\n", blk, srcno0, - srcno0 + nr_ipis - 1); + monitor_printf(mon, "XIVE[%x] #%d Source %08x .. %08x\n", chip_id, blk, + srcno0, srcno0 + nr_ipis - 1); xive_source_pic_print_info(&xive->ipi_source, srcno0, mon); - monitor_printf(mon, "XIVE[%x] EAT %08x .. %08x\n", blk, srcno0, - srcno0 + nr_ipis - 1); + monitor_printf(mon, "XIVE[%x] #%d EAT %08x .. %08x\n", chip_id, blk, + srcno0, srcno0 + nr_ipis - 1); for (i = 0; i < nr_ipis; i++) { if (xive_router_get_eas(xrtr, blk, i, &eas)) { break; @@ -1688,20 +1696,20 @@ void pnv_xive_pic_print_info(PnvXive *xive, Monitor *mon) } } - monitor_printf(mon, "XIVE[%x] ENDT\n", blk); + monitor_printf(mon, "XIVE[%x] #%d ENDT\n", chip_id, blk); i = 0; while (!xive_router_get_end(xrtr, blk, i, &end)) { xive_end_pic_print_info(&end, i++, mon); } - monitor_printf(mon, "XIVE[%x] END Escalation EAT\n", blk); + monitor_printf(mon, "XIVE[%x] #%d END Escalation EAT\n", chip_id, blk); i = 0; while (!xive_router_get_end(xrtr, blk, i, &end)) { xive_end_eas_pic_print_info(&end, i++, mon); } - monitor_printf(mon, "XIVE[%x] NVTT %08x .. %08x\n", blk, 0, - XIVE_NVT_COUNT - 1); + monitor_printf(mon, "XIVE[%x] #%d NVTT %08x .. %08x\n", chip_id, blk, + 0, XIVE_NVT_COUNT - 1); for (i = 0; i < XIVE_NVT_COUNT; i += XIVE_NVT_PER_PAGE) { while (!xive_router_get_nvt(xrtr, blk, i, &nvt)) { xive_nvt_pic_print_info(&nvt, i++, mon); @@ -1715,12 +1723,6 @@ static void pnv_xive_reset(void *dev) XiveSource *xsrc = &xive->ipi_source; XiveENDSource *end_xsrc = &xive->end_source; - /* - * Use the PnvChip id to identify the XIVE interrupt controller. - * It can be overriden by configuration at runtime. - */ - xive->tctx_chipid = xive->chip->chip_id; - /* Default page size (Should be changed at runtime to 64k) */ xive->ic_shift = xive->vc_shift = xive->pc_shift = 12; -- 2.21.0