From e50764d4f2b11fc9e9fe0b2fd0a4617b32593bfa Mon Sep 17 00:00:00 2001 From: Christophe Lombard Date: Tue, 13 Jun 2017 14:21:21 +0200 Subject: capi: Load capp microcode CAPP microcode flash download and CAPP upload for PHB4. A new file 'capp.c' is created to receive common capp code for PHB3 and PHB4. Signed-off-by: Christophe Lombard Reviewed-by: Frederic Barrat Signed-off-by: Stewart Smith --- hw/phb3.c | 205 ++++---------------------------------------------------------- 1 file changed, 13 insertions(+), 192 deletions(-) (limited to 'hw/phb3.c') diff --git a/hw/phb3.c b/hw/phb3.c index ad5ba1e..7922098 100644 --- a/hw/phb3.c +++ b/hw/phb3.c @@ -2431,139 +2431,21 @@ static int64_t phb3_freset(struct pci_slot *slot) return OPAL_HARDWARE; } -struct lock capi_lock = LOCK_UNLOCKED; -static struct { - uint32_t ec_level; - struct capp_lid_hdr *lid; - size_t size; - int load_result; -} capp_ucode_info = { 0, NULL, 0, false }; - -#define CAPP_UCODE_MAX_SIZE 0x20000 - -#define CAPP_UCODE_LOADED(chip, p) \ - ((chip)->capp_ucode_loaded & (1 << (p)->index)) - -static int64_t capp_lid_download(void) -{ - int64_t ret; - - if (capp_ucode_info.load_result != OPAL_EMPTY) - return capp_ucode_info.load_result; - - capp_ucode_info.load_result = wait_for_resource_loaded( - RESOURCE_ID_CAPP, - capp_ucode_info.ec_level); - - if (capp_ucode_info.load_result != OPAL_SUCCESS) { - prerror("CAPP: Error loading ucode lid. index=%x\n", - capp_ucode_info.ec_level); - ret = OPAL_RESOURCE; - free(capp_ucode_info.lid); - capp_ucode_info.lid = NULL; - goto end; - } - - ret = OPAL_SUCCESS; -end: - return ret; -} - -static int64_t capp_load_ucode(struct phb3 *p) +static int64_t load_capp_ucode(struct phb3 *p) { - struct proc_chip *chip = get_chip(p->chip_id); - struct capp_ucode_lid *ucode; - struct capp_ucode_data *data; - struct capp_lid_hdr *lid; - uint64_t rc, val, addr; - uint32_t chunk_count, offset, reg_offset; - int i; - - if (CAPP_UCODE_LOADED(chip, p)) - return OPAL_SUCCESS; + int64_t rc; - /* Return if PHB not attached to a CAPP unit */ if (p->index > PHB3_CAPP_MAX_PHB_INDEX(p)) return OPAL_HARDWARE; - rc = capp_lid_download(); - if (rc) - return rc; - - prlog(PR_INFO, "CHIP%i: CAPP ucode lid loaded at %p\n", - p->chip_id, capp_ucode_info.lid); - lid = capp_ucode_info.lid; - /* - * If lid header is present (on FSP machines), it'll tell us where to - * find the ucode. Otherwise this is the ucode. - */ - ucode = (struct capp_ucode_lid *)lid; - if (be64_to_cpu(lid->eyecatcher) == 0x434150504c494448) { - if (be64_to_cpu(lid->version) != 0x1) { - PHBERR(p, "capi ucode lid header invalid\n"); - return OPAL_HARDWARE; - } - ucode = (struct capp_ucode_lid *) - ((char *)ucode + be64_to_cpu(lid->ucode_offset)); - } - - if ((be64_to_cpu(ucode->eyecatcher) != 0x43415050554C4944) || - (ucode->version != 1)) { - PHBERR(p, "CAPP: ucode header invalid\n"); - return OPAL_HARDWARE; - } - - reg_offset = PHB3_CAPP_REG_OFFSET(p); - offset = 0; - while (offset < be64_to_cpu(ucode->data_size)) { - data = (struct capp_ucode_data *) - ((char *)&ucode->data + offset); - chunk_count = be32_to_cpu(data->hdr.chunk_count); - offset += sizeof(struct capp_ucode_data_hdr) + chunk_count * 8; - - if (be64_to_cpu(data->hdr.eyecatcher) != 0x4341505055434F44) { - PHBERR(p, "CAPP: ucode data header invalid:%i\n", - offset); - return OPAL_HARDWARE; - } - - switch (data->hdr.reg) { - case apc_master_cresp: - xscom_write(p->chip_id, - CAPP_APC_MASTER_ARRAY_ADDR_REG + reg_offset, - 0); - addr = CAPP_APC_MASTER_ARRAY_WRITE_REG; - break; - case apc_master_uop_table: - xscom_write(p->chip_id, - CAPP_APC_MASTER_ARRAY_ADDR_REG + reg_offset, - 0x180ULL << 52); - addr = CAPP_APC_MASTER_ARRAY_WRITE_REG; - break; - case snp_ttype: - xscom_write(p->chip_id, - CAPP_SNP_ARRAY_ADDR_REG + reg_offset, - 0x5000ULL << 48); - addr = CAPP_SNP_ARRAY_WRITE_REG; - break; - case snp_uop_table: - xscom_write(p->chip_id, - CAPP_SNP_ARRAY_ADDR_REG + reg_offset, - 0x4000ULL << 48); - addr = CAPP_SNP_ARRAY_WRITE_REG; - break; - default: - continue; - } - - for (i = 0; i < chunk_count; i++) { - val = be64_to_cpu(data->data[i]); - xscom_write(p->chip_id, addr + reg_offset, val); - } - } - - chip->capp_ucode_loaded |= (1 << p->index); - return OPAL_SUCCESS; + /* 0x434150504c494448 = 'CAPPLIDH' in ASCII */ + rc = capp_load_ucode(p->chip_id, p->phb.opal_id, p->index, + 0x434150504c494448, PHB3_CAPP_REG_OFFSET(p), + CAPP_APC_MASTER_ARRAY_ADDR_REG, + CAPP_APC_MASTER_ARRAY_WRITE_REG, + CAPP_SNP_ARRAY_ADDR_REG, + CAPP_SNP_ARRAY_WRITE_REG); + return rc; } static void do_capp_recovery_scoms(struct phb3 *p) @@ -2576,7 +2458,7 @@ static void do_capp_recovery_scoms(struct phb3 *p) offset = PHB3_CAPP_REG_OFFSET(p); /* disable snoops */ xscom_write(p->chip_id, SNOOP_CAPI_CONFIG + offset, 0); - capp_load_ucode(p); + load_capp_ucode(p); /* clear err rpt reg*/ xscom_write(p->chip_id, CAPP_ERR_RPT_CLR + offset, 0); /* clear capp fir */ @@ -3737,7 +3619,7 @@ static int64_t phb3_set_capi_mode(struct phb *phb, uint64_t mode, uint32_t offset; u8 mask; - if (!CAPP_UCODE_LOADED(chip, p)) { + if (!capp_ucode_loaded(chip, p->index)) { PHBERR(p, "CAPP: ucode not loaded\n"); return OPAL_RESOURCE; } @@ -4820,7 +4702,7 @@ static void phb3_create(struct dt_node *np) phb3_init_hw(p, true); /* Load capp microcode into capp unit */ - capp_load_ucode(p); + load_capp_ucode(p); opal_add_host_sync_notifier(phb3_host_sync_reset, p); @@ -5017,67 +4899,6 @@ static void phb3_probe_pbcq(struct dt_node *pbcq) add_chip_dev_associativity(np); } -int phb3_preload_capp_ucode(void) -{ - struct dt_node *p; - struct proc_chip *chip; - uint32_t index; - uint64_t rc; - int ret; - - p = dt_find_compatible_node(dt_root, NULL, "ibm,power8-pbcq"); - - if (!p) { - printf("CAPI: WARNING: no compat thing found\n"); - return OPAL_SUCCESS; - } - - chip = get_chip(dt_get_chip_id(p)); - - rc = xscom_read_cfam_chipid(chip->id, &index); - if (rc) { - prerror("CAPP: Error reading cfam chip-id\n"); - ret = OPAL_HARDWARE; - return ret; - } - /* Keep ChipID and Major/Minor EC. Mask out the Location Code. */ - index = index & 0xf0fff; - - /* Assert that we're preloading */ - assert(capp_ucode_info.lid == NULL); - capp_ucode_info.load_result = OPAL_EMPTY; - - capp_ucode_info.ec_level = index; - - /* Is the ucode preloaded like for BML? */ - if (dt_has_node_property(p, "ibm,capp-ucode", NULL)) { - capp_ucode_info.lid = (struct capp_lid_hdr *)(u64) - dt_prop_get_u32(p, "ibm,capp-ucode"); - ret = OPAL_SUCCESS; - goto end; - } - /* If we successfully download the ucode, we leave it around forever */ - capp_ucode_info.size = CAPP_UCODE_MAX_SIZE; - capp_ucode_info.lid = malloc(CAPP_UCODE_MAX_SIZE); - if (!capp_ucode_info.lid) { - prerror("CAPP: Can't allocate space for ucode lid\n"); - ret = OPAL_NO_MEM; - goto end; - } - - printf("CAPI: Preloading ucode %x\n", capp_ucode_info.ec_level); - - ret = start_preload_resource(RESOURCE_ID_CAPP, index, - capp_ucode_info.lid, - &capp_ucode_info.size); - - if (ret != OPAL_SUCCESS) - prerror("CAPI: Failed to preload resource %d\n", ret); - -end: - return ret; -} - void phb3_preload_vpd(void) { const struct dt_property *prop; -- cgit v1.1