/* * (C) Copyright 2003 * Wolfgang Denk, DENX Software Engineering, wd@denx.de. * * Copyright (c) 2005 MontaVista Software, Inc. * Vitaly Bordug <vbordug@ru.mvista.com> * Added support for PCI bridge on MPC8272ADS * * See file CREDITS for list of people who contributed to this * project. * * 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 */ #include <common.h> #ifdef CONFIG_PCI #include <pci.h> #include <mpc8260.h> #include <asm/m8260_pci.h> #include <asm/io.h> #ifdef CONFIG_OF_LIBFDT #include <libfdt.h> #include <fdt_support.h> #endif #if defined CONFIG_MPC8266ADS || defined CONFIG_MPC8272 || defined CONFIG_PM826 DECLARE_GLOBAL_DATA_PTR; #endif /* * Local->PCI map (from CPU) controlled by * MPC826x master window * * 0x80000000 - 0xBFFFFFFF CPU2PCI space PCIBR0 * 0xF4000000 - 0xF7FFFFFF CPU2PCI space PCIBR1 * * 0x80000000 - 0x9FFFFFFF 0x80000000 - 0x9FFFFFFF (Outbound ATU #1) * PCI Mem with prefetch * * 0xA0000000 - 0xBFFFFFFF 0xA0000000 - 0xBFFFFFFF (Outbound ATU #2) * PCI Mem w/o prefetch * * 0xF4000000 - 0xF7FFFFFF 0x00000000 - 0x03FFFFFF (Outbound ATU #3) * 32-bit PCI IO * * PCI->Local map (from PCI) * MPC826x slave window controlled by * * 0x00000000 - 0x1FFFFFFF 0x00000000 - 0x1FFFFFFF (Inbound ATU #1) * MPC826x local memory */ /* * Slave window that allows PCI masters to access MPC826x local memory. * This window is set up using the first set of Inbound ATU registers */ #ifndef CFG_PCI_SLV_MEM_LOCAL #define PCI_SLV_MEM_LOCAL CFG_SDRAM_BASE /* Local base */ #else #define PCI_SLV_MEM_LOCAL CFG_PCI_SLV_MEM_LOCAL #endif #ifndef CFG_PCI_SLV_MEM_BUS #define PCI_SLV_MEM_BUS 0x00000000 /* PCI base */ #else #define PCI_SLV_MEM_BUS CFG_PCI_SLV_MEM_BUS #endif #ifndef CFG_PICMR0_MASK_ATTRIB #define PICMR0_MASK_ATTRIB (PICMR_MASK_512MB | PICMR_ENABLE | \ PICMR_PREFETCH_EN) #else #define PICMR0_MASK_ATTRIB CFG_PICMR0_MASK_ATTRIB #endif /* * These are the windows that allow the CPU to access PCI address space. * All three PCI master windows, which allow the CPU to access PCI * prefetch, non prefetch, and IO space (see below), must all fit within * these windows. */ /* PCIBR0 */ #ifndef CFG_PCI_MSTR0_LOCAL #define PCI_MSTR0_LOCAL 0x80000000 /* Local base */ #else #define PCI_MSTR0_LOCAL CFG_PCI_MSTR0_LOCAL #endif #ifndef CFG_PCIMSK0_MASK #define PCIMSK0_MASK PCIMSK_1GB /* Size of window */ #else #define PCIMSK0_MASK CFG_PCIMSK0_MASK #endif /* PCIBR1 */ #ifndef CFG_PCI_MSTR1_LOCAL #define PCI_MSTR1_LOCAL 0xF4000000 /* Local base */ #else #define PCI_MSTR1_LOCAL CFG_PCI_MSTR1_LOCAL #endif #ifndef CFG_PCIMSK1_MASK #define PCIMSK1_MASK PCIMSK_64MB /* Size of window */ #else #define PCIMSK1_MASK CFG_PCIMSK1_MASK #endif /* * Master window that allows the CPU to access PCI Memory (prefetch). * This window will be setup with the first set of Outbound ATU registers * in the bridge. */ #ifndef CFG_PCI_MSTR_MEM_LOCAL #define PCI_MSTR_MEM_LOCAL 0x80000000 /* Local base */ #else #define PCI_MSTR_MEM_LOCAL CFG_PCI_MSTR_MEM_LOCAL #endif #ifndef CFG_PCI_MSTR_MEM_BUS #define PCI_MSTR_MEM_BUS 0x80000000 /* PCI base */ #else #define PCI_MSTR_MEM_BUS CFG_PCI_MSTR_MEM_BUS #endif #ifndef CFG_CPU_PCI_MEM_START #define CPU_PCI_MEM_START PCI_MSTR_MEM_LOCAL #else #define CPU_PCI_MEM_START CFG_CPU_PCI_MEM_START #endif #ifndef CFG_PCI_MSTR_MEM_SIZE #define PCI_MSTR_MEM_SIZE 0x10000000 /* 256MB */ #else #define PCI_MSTR_MEM_SIZE CFG_PCI_MSTR_MEM_SIZE #endif #ifndef CFG_POCMR0_MASK_ATTRIB #define POCMR0_MASK_ATTRIB (POCMR_MASK_256MB | POCMR_ENABLE | POCMR_PREFETCH_EN) #else #define POCMR0_MASK_ATTRIB CFG_POCMR0_MASK_ATTRIB #endif /* * Master window that allows the CPU to access PCI Memory (non-prefetch). * This window will be setup with the second set of Outbound ATU registers * in the bridge. */ #ifndef CFG_PCI_MSTR_MEMIO_LOCAL #define PCI_MSTR_MEMIO_LOCAL 0x90000000 /* Local base */ #else #define PCI_MSTR_MEMIO_LOCAL CFG_PCI_MSTR_MEMIO_LOCAL #endif #ifndef CFG_PCI_MSTR_MEMIO_BUS #define PCI_MSTR_MEMIO_BUS 0x90000000 /* PCI base */ #else #define PCI_MSTR_MEMIO_BUS CFG_PCI_MSTR_MEMIO_BUS #endif #ifndef CFG_CPU_PCI_MEMIO_START #define CPU_PCI_MEMIO_START PCI_MSTR_MEMIO_LOCAL #else #define CPU_PCI_MEMIO_START CFG_CPU_PCI_MEMIO_START #endif #ifndef CFG_PCI_MSTR_MEMIO_SIZE #define PCI_MSTR_MEMIO_SIZE 0x10000000 /* 256 MB */ #else #define PCI_MSTR_MEMIO_SIZE CFG_PCI_MSTR_MEMIO_SIZE #endif #ifndef CFG_POCMR1_MASK_ATTRIB #define POCMR1_MASK_ATTRIB (POCMR_MASK_512MB | POCMR_ENABLE) #else #define POCMR1_MASK_ATTRIB CFG_POCMR1_MASK_ATTRIB #endif /* * Master window that allows the CPU to access PCI IO space. * This window will be setup with the third set of Outbound ATU registers * in the bridge. */ #ifndef CFG_PCI_MSTR_IO_LOCAL #define PCI_MSTR_IO_LOCAL 0xA0000000 /* Local base */ #else #define PCI_MSTR_IO_LOCAL CFG_PCI_MSTR_IO_LOCAL #endif #ifndef CFG_PCI_MSTR_IO_BUS #define PCI_MSTR_IO_BUS 0xA0000000 /* PCI base */ #else #define PCI_MSTR_IO_BUS CFG_PCI_MSTR_IO_BUS #endif #ifndef CFG_CPU_PCI_IO_START #define CPU_PCI_IO_START PCI_MSTR_IO_LOCAL #else #define CPU_PCI_IO_START CFG_CPU_PCI_IO_START #endif #ifndef CFG_PCI_MSTR_IO_SIZE #define PCI_MSTR_IO_SIZE 0x10000000 /* 256MB */ #else #define PCI_MSTR_IO_SIZE CFG_PCI_MSTR_IO_SIZE #endif #ifndef CFG_POCMR2_MASK_ATTRIB #define POCMR2_MASK_ATTRIB (POCMR_MASK_256MB | POCMR_ENABLE | POCMR_PCI_IO) #else #define POCMR2_MASK_ATTRIB CFG_POCMR2_MASK_ATTRIB #endif /* PCI bus configuration registers. */ #define PCI_CLASS_BRIDGE_CTLR 0x06 static inline void pci_outl (u32 addr, u32 data) { *(volatile u32 *) addr = cpu_to_le32 (data); } void pci_mpc8250_init (struct pci_controller *hose) { u16 tempShort; volatile immap_t *immap = (immap_t *) CFG_IMMR; pci_dev_t host_devno = PCI_BDF (0, 0, 0); pci_setup_indirect (hose, CFG_IMMR + PCI_CFG_ADDR_REG, CFG_IMMR + PCI_CFG_DATA_REG); /* * Setting required to enable local bus for PCI (SIUMCR [LBPC]). */ #ifdef CONFIG_MPC8266ADS immap->im_siu_conf.sc_siumcr = (immap->im_siu_conf.sc_siumcr & ~SIUMCR_LBPC11) | SIUMCR_LBPC01; #elif defined CONFIG_MPC8272 immap->im_siu_conf.sc_siumcr = (immap->im_siu_conf.sc_siumcr & ~SIUMCR_BBD & ~SIUMCR_ESE & ~SIUMCR_PBSE & ~SIUMCR_CDIS & ~SIUMCR_DPPC11 & ~SIUMCR_L2CPC11 & ~SIUMCR_LBPC11 & ~SIUMCR_APPC11 & ~SIUMCR_CS10PC11 & ~SIUMCR_BCTLC11 & ~SIUMCR_MMR11) | SIUMCR_DPPC11 | SIUMCR_L2CPC01 | SIUMCR_LBPC00 | SIUMCR_APPC10 | SIUMCR_CS10PC00 | SIUMCR_BCTLC00 | SIUMCR_MMR11; #elif defined(CONFIG_TQM8272) /* nothing to do for this Board here */ #else /* * Setting required to enable IRQ1-IRQ7 (SIUMCR [DPPC]), * and local bus for PCI (SIUMCR [LBPC]). */ immap->im_siu_conf.sc_siumcr = (immap->im_siu_conf.sc_siumcr & ~SIUMCR_LBPC11 & ~SIUMCR_CS10PC11 & ~SIUMCR_LBPC11) | SIUMCR_LBPC01 | SIUMCR_CS10PC01 | SIUMCR_APPC10; #endif /* Make PCI lowest priority */ /* Each 4 bits is a device bus request and the MS 4bits is highest priority */ /* Bus 4bit value --- ---------- CPM high 0b0000 CPM middle 0b0001 CPM low 0b0010 PCI reguest 0b0011 Reserved 0b0100 Reserved 0b0101 Internal Core 0b0110 External Master 1 0b0111 External Master 2 0b1000 External Master 3 0b1001 The rest are reserved */ immap->im_siu_conf.sc_ppc_alrh = 0x61207893; /* Park bus on core while modifying PCI Bus accesses */ immap->im_siu_conf.sc_ppc_acr = 0x6; /* * Set up master windows that allow the CPU to access PCI space. These * windows are set up using the two SIU PCIBR registers. */ immap->im_memctl.memc_pcimsk0 = PCIMSK0_MASK; immap->im_memctl.memc_pcibr0 = PCI_MSTR0_LOCAL | PCIBR_ENABLE; #if defined CONFIG_MPC8266ADS || defined CONFIG_MPC8272 immap->im_memctl.memc_pcimsk1 = PCIMSK1_MASK; immap->im_memctl.memc_pcibr1 = PCI_MSTR1_LOCAL | PCIBR_ENABLE; #endif /* Release PCI RST (by default the PCI RST signal is held low) */ immap->im_pci.pci_gcr = cpu_to_le32 (PCIGCR_PCI_BUS_EN); /* give it some time */ { #if defined CONFIG_MPC8266ADS || defined CONFIG_MPC8272 /* Give the PCI cards more time to initialize before query This might be good for other boards also */ int i; for (i = 0; i < 1000; ++i) #endif udelay (1000); } /* * Set up master window that allows the CPU to access PCI Memory (prefetch) * space. This window is set up using the first set of Outbound ATU registers. */ immap->im_pci.pci_potar0 = cpu_to_le32 (PCI_MSTR_MEM_BUS >> 12); /* PCI base */ immap->im_pci.pci_pobar0 = cpu_to_le32 (PCI_MSTR_MEM_LOCAL >> 12); /* Local base */ immap->im_pci.pci_pocmr0 = cpu_to_le32 (POCMR0_MASK_ATTRIB); /* Size & attribute */ /* * Set up master window that allows the CPU to access PCI Memory (non-prefetch) * space. This window is set up using the second set of Outbound ATU registers. */ immap->im_pci.pci_potar1 = cpu_to_le32 (PCI_MSTR_MEMIO_BUS >> 12); /* PCI base */ immap->im_pci.pci_pobar1 = cpu_to_le32 (PCI_MSTR_MEMIO_LOCAL >> 12); /* Local base */ immap->im_pci.pci_pocmr1 = cpu_to_le32 (POCMR1_MASK_ATTRIB); /* Size & attribute */ /* * Set up master window that allows the CPU to access PCI IO space. This window * is set up using the third set of Outbound ATU registers. */ immap->im_pci.pci_potar2 = cpu_to_le32 (PCI_MSTR_IO_BUS >> 12); /* PCI base */ immap->im_pci.pci_pobar2 = cpu_to_le32 (PCI_MSTR_IO_LOCAL >> 12); /* Local base */ immap->im_pci.pci_pocmr2 = cpu_to_le32 (POCMR2_MASK_ATTRIB); /* Size & attribute */ /* * Set up slave window that allows PCI masters to access MPC826x local memory. * This window is set up using the first set of Inbound ATU registers */ immap->im_pci.pci_pitar0 = cpu_to_le32 (PCI_SLV_MEM_LOCAL >> 12); /* PCI base */ immap->im_pci.pci_pibar0 = cpu_to_le32 (PCI_SLV_MEM_BUS >> 12); /* Local base */ immap->im_pci.pci_picmr0 = cpu_to_le32 (PICMR0_MASK_ATTRIB); /* Size & attribute */ /* See above for description - puts PCI request as highest priority */ #ifdef CONFIG_MPC8272 immap->im_siu_conf.sc_ppc_alrh = 0x01236745; #else immap->im_siu_conf.sc_ppc_alrh = 0x03124567; #endif /* Park the bus on the PCI */ immap->im_siu_conf.sc_ppc_acr = PPC_ACR_BUS_PARK_PCI; /* Host mode - specify the bridge as a host-PCI bridge */ pci_hose_write_config_byte (hose, host_devno, PCI_CLASS_CODE, PCI_CLASS_BRIDGE_CTLR); /* Enable the host bridge to be a master on the PCI bus, and to act as a PCI memory target */ pci_hose_read_config_word (hose, host_devno, PCI_COMMAND, &tempShort); pci_hose_write_config_word (hose, host_devno, PCI_COMMAND, tempShort | PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY); /* do some bridge init, should be done on all 8260 based bridges */ pci_hose_write_config_byte (hose, host_devno, PCI_CACHE_LINE_SIZE, 0x08); pci_hose_write_config_byte (hose, host_devno, PCI_LATENCY_TIMER, 0xF8); hose->first_busno = 0; hose->last_busno = 0xff; /* System memory space */ #if defined CONFIG_MPC8266ADS || defined CONFIG_MPC8272 || defined CONFIG_PM826 pci_set_region (hose->regions + 0, PCI_SLV_MEM_BUS, PCI_SLV_MEM_LOCAL, gd->ram_size, PCI_REGION_MEM | PCI_REGION_MEMORY); #else pci_set_region (hose->regions + 0, CFG_SDRAM_BASE, CFG_SDRAM_BASE, 0x4000000, PCI_REGION_MEM | PCI_REGION_MEMORY); #endif /* PCI memory space */ #if defined CONFIG_MPC8266ADS || defined CONFIG_MPC8272 pci_set_region (hose->regions + 1, PCI_MSTR_MEMIO_BUS, PCI_MSTR_MEMIO_LOCAL, PCI_MSTR_MEMIO_SIZE, PCI_REGION_MEM); #else pci_set_region (hose->regions + 1, PCI_MSTR_MEM_BUS, PCI_MSTR_MEM_LOCAL, PCI_MSTR_MEM_SIZE, PCI_REGION_MEM); #endif /* PCI I/O space */ pci_set_region (hose->regions + 2, PCI_MSTR_IO_BUS, PCI_MSTR_IO_LOCAL, PCI_MSTR_IO_SIZE, PCI_REGION_IO); hose->region_count = 3; pci_register_hose (hose); /* Mask off master abort machine checks */ immap->im_pci.pci_emr &= cpu_to_le32 (~PCI_ERROR_PCI_NO_RSP); eieio (); hose->last_busno = pci_hose_scan (hose); /* clear the error in the error status register */ immap->im_pci.pci_esr = cpu_to_le32 (PCI_ERROR_PCI_NO_RSP); /* unmask master abort machine checks */ immap->im_pci.pci_emr |= cpu_to_le32 (PCI_ERROR_PCI_NO_RSP); } #if defined(CONFIG_OF_LIBFDT) void ft_pci_setup(void *blob, bd_t *bd) { do_fixup_by_prop_u32(blob, "device_type", "pci", 4, "clock-frequency", bd->pci_clk, 1); } #endif #endif /* CONFIG_PCI */