X-Git-Url: https://git.kernelconcepts.de/?a=blobdiff_plain;f=drivers%2Fpci%2Ffsl_pci_init.c;h=231b07573f5b15a35c472bbf8c6cfcb124166412;hb=ff0960f9a018952cbaab59c0d87b6e0338c8f04c;hp=48ae16374dc5c8cfa0391ebdd927c69abb5ee0a9;hpb=71724830b42f67ea9633324183bb622724eee9cd;p=karo-tx-uboot.git diff --git a/drivers/pci/fsl_pci_init.c b/drivers/pci/fsl_pci_init.c index 48ae16374d..231b07573f 100644 --- a/drivers/pci/fsl_pci_init.c +++ b/drivers/pci/fsl_pci_init.c @@ -1,20 +1,7 @@ /* * Copyright 2007-2012 Freescale Semiconductor, Inc. * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the Free - * Software Foundation; either version 2 of the License, or (at your option) - * any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, - * MA 02111-1307 USA + * SPDX-License-Identifier: GPL-2.0+ */ #include @@ -41,12 +28,6 @@ DECLARE_GLOBAL_DATA_PTR; #include #include -/* Freescale-specific PCI config registers */ -#define FSL_PCI_PBFR 0x44 -#define FSL_PCIE_CAP_ID 0x4c -#define FSL_PCIE_CFG_RDY 0x4b0 -#define FSL_PROG_IF_AGENT 0x1 - #ifndef CONFIG_SYS_PCI_MEMORY_BUS #define CONFIG_SYS_PCI_MEMORY_BUS 0 #endif @@ -68,8 +49,13 @@ static void set_inbound_window(volatile pit_t *pi, u64 size) { u32 sz = (__ilog2_u64(size) - 1); - u32 flag = PIWAR_EN | PIWAR_LOCAL | - PIWAR_READ_SNOOP | PIWAR_WRITE_SNOOP; +#ifdef CONFIG_SYS_FSL_ERRATUM_A005434 + u32 flag = 0; +#else + u32 flag = PIWAR_LOCAL; +#endif + + flag |= PIWAR_EN | PIWAR_READ_SNOOP | PIWAR_WRITE_SNOOP; out_be32(&pi->pitar, r->phys_start >> 12); out_be32(&pi->piwbar, r->bus_start >> 12); @@ -211,7 +197,7 @@ static int fsl_pci_setup_inbound_windows(struct pci_controller *hose, return 1; } -#ifdef CONFIG_SYS_FSL_SRIO_PCIE_BOOT_MASTER +#ifdef CONFIG_SRIO_PCIE_BOOT_MASTER static void fsl_pcie_boot_master(pit_t *pi) { /* configure inbound window for slave's u-boot image */ @@ -314,6 +300,15 @@ void fsl_pci_init(struct pci_controller *hose, struct fsl_pci_info *pci_info) int enabled, r, inbound = 0; u16 ltssm; u8 temp8, pcie_cap; + int pcie_cap_pos; + int pci_dcr; + int pci_dsr; + int pci_lsr; + +#if defined(CONFIG_FSL_PCIE_DISABLE_ASPM) + int pci_lcr; +#endif + volatile ccsr_fsl_pci_t *pci = (ccsr_fsl_pci_t *)cfg_addr; struct pci_region *reg = hose->regions + hose->region_count; pci_dev_t dev = PCI_BDF(hose->first_busno, 0, 0); @@ -386,9 +381,14 @@ void fsl_pci_init(struct pci_controller *hose, struct fsl_pci_info *pci_info) hose->region_count++; /* see if we are a PCIe or PCI controller */ - pci_hose_read_config_byte(hose, dev, FSL_PCIE_CAP_ID, &pcie_cap); + pcie_cap_pos = pci_hose_find_capability(hose, dev, PCI_CAP_ID_EXP); + pci_dcr = pcie_cap_pos + 0x08; + pci_dsr = pcie_cap_pos + 0x0a; + pci_lsr = pcie_cap_pos + 0x12; + + pci_hose_read_config_byte(hose, dev, pcie_cap_pos, &pcie_cap); -#ifdef CONFIG_SYS_FSL_SRIO_PCIE_BOOT_MASTER +#ifdef CONFIG_SRIO_PCIE_BOOT_MASTER /* boot from PCIE --master */ char *s = getenv("bootmaster"); char pcie[6]; @@ -425,18 +425,28 @@ void fsl_pci_init(struct pci_controller *hose, struct fsl_pci_info *pci_info) * - Master PERR (pci) * - ICCA (PCIe) */ - pci_hose_read_config_dword(hose, dev, PCI_DCR, &temp32); + pci_hose_read_config_dword(hose, dev, pci_dcr, &temp32); temp32 |= 0xf000e; /* set URR, FER, NFER (but not CER) */ - pci_hose_write_config_dword(hose, dev, PCI_DCR, temp32); + pci_hose_write_config_dword(hose, dev, pci_dcr, temp32); #if defined(CONFIG_FSL_PCIE_DISABLE_ASPM) + pci_lcr = pcie_cap_pos + 0x10; temp32 = 0; - pci_hose_read_config_dword(hose, dev, PCI_LCR, &temp32); + pci_hose_read_config_dword(hose, dev, pci_lcr, &temp32); temp32 &= ~0x03; /* Disable ASPM */ - pci_hose_write_config_dword(hose, dev, PCI_LCR, temp32); + pci_hose_write_config_dword(hose, dev, pci_lcr, temp32); udelay(1); #endif if (pcie_cap == PCI_CAP_ID_EXP) { + if (block_rev >= PEX_IP_BLK_REV_3_0) { +#define PEX_CSR0_LTSSM_MASK 0xFC +#define PEX_CSR0_LTSSM_SHIFT 2 + ltssm = (in_be32(&pci->pex_csr0) + & PEX_CSR0_LTSSM_MASK) >> PEX_CSR0_LTSSM_SHIFT; + enabled = (ltssm == 0x11) ? 1 : 0; + } else { + /* pci_hose_read_config_word(hose, dev, PCI_LTSSM, <ssm); */ + /* enabled = ltssm >= PCI_LTSSM_L0; */ pci_hose_read_config_word(hose, dev, PCI_LTSSM, <ssm); enabled = ltssm >= PCI_LTSSM_L0; @@ -469,10 +479,39 @@ void fsl_pci_init(struct pci_controller *hose, struct fsl_pci_info *pci_info) PCI_BASE_ADDRESS_0, pcicsrbar); } #endif + } +#ifdef CONFIG_SYS_P4080_ERRATUM_PCIE_A003 + if (enabled == 0) { + serdes_corenet_t *srds_regs = (void *)CONFIG_SYS_FSL_CORENET_SERDES_ADDR; + temp32 = in_be32(&srds_regs->srdspccr0); + + if ((temp32 >> 28) == 3) { + int i; + + out_be32(&srds_regs->srdspccr0, 2 << 28); + setbits_be32(&pci->pdb_stat, 0x08000000); + in_be32(&pci->pdb_stat); + udelay(100); + clrbits_be32(&pci->pdb_stat, 0x08000000); + asm("sync;isync"); + for (i=0; i < 100 && ltssm < PCI_LTSSM_L0; i++) { + pci_hose_read_config_word(hose, dev, PCI_LTSSM, <ssm); + udelay(1000); + } + enabled = ltssm >= PCI_LTSSM_L0; + } + } +#endif if (!enabled) { - /* Let the user know there's no PCIe link */ - printf("no link, regs @ 0x%lx\n", pci_info->regs); + /* Let the user know there's no PCIe link for root + * complex. for endpoint, the link may not setup, so + * print undetermined. + */ + if (fsl_is_pci_agent(hose)) + printf("undetermined, regs @ 0x%lx\n", pci_info->regs); + else + printf("no link, regs @ 0x%lx\n", pci_info->regs); hose->last_busno = hose->first_busno; return; } @@ -481,9 +520,9 @@ void fsl_pci_init(struct pci_controller *hose, struct fsl_pci_info *pci_info) out_be32(&pci->pme_msg_int_en, 0xffffffff); /* Print the negotiated PCIe link width */ - pci_hose_read_config_word(hose, dev, PCI_LSR, &temp16); - printf("x%d, regs @ 0x%lx\n", (temp16 & 0x3f0 ) >> 4, - pci_info->regs); + pci_hose_read_config_word(hose, dev, pci_lsr, &temp16); + printf("x%d gen%d, regs @ 0x%lx\n", (temp16 & 0x3f0) >> 4, + (temp16 & 0xf), pci_info->regs); hose->current_busno++; /* Start scan with secondary */ pciauto_prescan_setup_bridge(hose, dev, hose->current_busno); @@ -528,9 +567,9 @@ void fsl_pci_init(struct pci_controller *hose, struct fsl_pci_info *pci_info) out_be32(&pci->pme_msg_det, 0xffffffff); out_be32(&pci->pedr, 0xffffffff); - pci_hose_read_config_word (hose, dev, PCI_DSR, &temp16); + pci_hose_read_config_word(hose, dev, pci_dsr, &temp16); if (temp16) { - pci_hose_write_config_word(hose, dev, PCI_DSR, 0xffff); + pci_hose_write_config_word(hose, dev, pci_dsr, 0xffff); } pci_hose_read_config_word (hose, dev, PCI_SEC_STATUS, &temp16); @@ -541,10 +580,12 @@ void fsl_pci_init(struct pci_controller *hose, struct fsl_pci_info *pci_info) int fsl_is_pci_agent(struct pci_controller *hose) { + int pcie_cap_pos; u8 pcie_cap; pci_dev_t dev = PCI_BDF(hose->first_busno, 0, 0); - pci_hose_read_config_byte(hose, dev, FSL_PCIE_CAP_ID, &pcie_cap); + pcie_cap_pos = pci_hose_find_capability(hose, dev, PCI_CAP_ID_EXP); + pci_hose_read_config_byte(hose, dev, pcie_cap_pos, &pcie_cap); if (pcie_cap == PCI_CAP_ID_EXP) { u8 header_type; @@ -555,6 +596,10 @@ int fsl_is_pci_agent(struct pci_controller *hose) u8 prog_if; pci_hose_read_config_byte(hose, dev, PCI_CLASS_PROG, &prog_if); + /* Programming Interface (PCI_CLASS_PROG) + * 0 == pci host or pcie root-complex, + * 1 == pci agent or pcie end-point + */ return (prog_if == FSL_PROG_IF_AGENT); } } @@ -565,6 +610,7 @@ int fsl_pci_init_port(struct fsl_pci_info *pci_info, volatile ccsr_fsl_pci_t *pci; struct pci_region *r; pci_dev_t dev = PCI_BDF(busno,0,0); + int pcie_cap_pos; u8 pcie_cap; pci = (ccsr_fsl_pci_t *) pci_info->regs; @@ -602,7 +648,7 @@ int fsl_pci_init_port(struct fsl_pci_info *pci_info, if (fsl_is_pci_agent(hose)) { fsl_pci_config_unlock(hose); hose->last_busno = hose->first_busno; -#ifdef CONFIG_SYS_FSL_SRIO_PCIE_BOOT_MASTER +#ifdef CONFIG_SRIO_PCIE_BOOT_MASTER } else { /* boot from PCIE --master releases slave's core 0 */ char *s = getenv("bootmaster"); @@ -614,11 +660,11 @@ int fsl_pci_init_port(struct fsl_pci_info *pci_info, #endif } - pci_hose_read_config_byte(hose, dev, FSL_PCIE_CAP_ID, &pcie_cap); + pcie_cap_pos = pci_hose_find_capability(hose, dev, PCI_CAP_ID_EXP); + pci_hose_read_config_byte(hose, dev, pcie_cap_pos, &pcie_cap); printf("PCI%s%x: Bus %02x - %02x\n", pcie_cap == PCI_CAP_ID_EXP ? "e" : "", pci_info->pci_num, hose->first_busno, hose->last_busno); - return(hose->last_busno + 1); } @@ -626,13 +672,15 @@ int fsl_pci_init_port(struct fsl_pci_info *pci_info, void fsl_pci_config_unlock(struct pci_controller *hose) { pci_dev_t dev = PCI_BDF(hose->first_busno,0,0); + int pcie_cap_pos; u8 pcie_cap; u16 pbfr; if (!fsl_is_pci_agent(hose)) return; - pci_hose_read_config_byte(hose, dev, FSL_PCIE_CAP_ID, &pcie_cap); + pcie_cap_pos = pci_hose_find_capability(hose, dev, PCI_CAP_ID_EXP); + pci_hose_read_config_byte(hose, dev, pcie_cap_pos, &pcie_cap); if (pcie_cap != 0x0) { /* PCIe - set CFG_READY bit of Configuration Ready Register */ pci_hose_write_config_byte(hose, dev, FSL_PCIE_CFG_RDY, 0x1);