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author | Peter Tyser <ptyser@xes-inc.com> | 2010-04-12 22:28:09 -0500 |
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committer | Wolfgang Denk <wd@denx.de> | 2010-04-13 09:13:16 +0200 |
commit | 8d1f268204b07e172f3cb5cee0a3974d605b0b98 (patch) | |
tree | c3359e920cc886e7060fb099bf933496aca37153 /cpu/mpc83xx/pcie.c | |
parent | 819833af39a91fa1c1e8252862bbda6f5a602f7b (diff) | |
download | u-boot-imx-8d1f268204b07e172f3cb5cee0a3974d605b0b98.zip u-boot-imx-8d1f268204b07e172f3cb5cee0a3974d605b0b98.tar.gz u-boot-imx-8d1f268204b07e172f3cb5cee0a3974d605b0b98.tar.bz2 |
ppc: Move cpu/$CPU to arch/ppc/cpu/$CPU
Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
Diffstat (limited to 'cpu/mpc83xx/pcie.c')
-rw-r--r-- | cpu/mpc83xx/pcie.c | 317 |
1 files changed, 0 insertions, 317 deletions
diff --git a/cpu/mpc83xx/pcie.c b/cpu/mpc83xx/pcie.c deleted file mode 100644 index 77f8906..0000000 --- a/cpu/mpc83xx/pcie.c +++ /dev/null @@ -1,317 +0,0 @@ -/* - * Copyright (C) 2007-2009 Freescale Semiconductor, Inc. - * Copyright (C) 2008-2009 MontaVista Software, Inc. - * - * Authors: Tony Li <tony.li@freescale.com> - * Anton Vorontsov <avorontsov@ru.mvista.com> - * - * 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> -#include <pci.h> -#include <mpc83xx.h> -#include <asm/io.h> - -DECLARE_GLOBAL_DATA_PTR; - -#define PCIE_MAX_BUSES 2 - -#ifdef CONFIG_83XX_GENERIC_PCIE_REGISTER_HOSES - -static int mpc83xx_pcie_remap_cfg(struct pci_controller *hose, pci_dev_t dev) -{ - int bus = PCI_BUS(dev) - hose->first_busno; - immap_t *immr = (immap_t *)CONFIG_SYS_IMMR; - pex83xx_t *pex = &immr->pciexp[bus]; - struct pex_outbound_window *out_win = &pex->bridge.pex_outbound_win[0]; - u8 devfn = PCI_DEV(dev) << 3 | PCI_FUNC(dev); - u32 dev_base = bus << 24 | devfn << 16; - - if (hose->indirect_type == INDIRECT_TYPE_NO_PCIE_LINK) - return -1; - /* - * Workaround for the HW bug: for Type 0 configure transactions the - * PCI-E controller does not check the device number bits and just - * assumes that the device number bits are 0. - */ - if (devfn & 0xf8) - return -1; - - out_le32(&out_win->tarl, dev_base); - return 0; -} - -#define cfg_read(val, addr, type, op) \ - do { *val = op((type)(addr)); } while (0) -#define cfg_write(val, addr, type, op) \ - do { op((type *)(addr), (val)); } while (0) - -#define cfg_read_err(val) do { *val = -1; } while (0) -#define cfg_write_err(val) do { } while (0) - -#define PCIE_OP(rw, size, type, op) \ -static int pcie_##rw##_config_##size(struct pci_controller *hose, \ - pci_dev_t dev, int offset, \ - type val) \ -{ \ - int ret; \ - \ - ret = mpc83xx_pcie_remap_cfg(hose, dev); \ - if (ret) { \ - cfg_##rw##_err(val); \ - return ret; \ - } \ - cfg_##rw(val, (void *)hose->cfg_addr + offset, type, op); \ - return 0; \ -} - -PCIE_OP(read, byte, u8 *, in_8) -PCIE_OP(read, word, u16 *, in_le16) -PCIE_OP(read, dword, u32 *, in_le32) -PCIE_OP(write, byte, u8, out_8) -PCIE_OP(write, word, u16, out_le16) -PCIE_OP(write, dword, u32, out_le32) - -static void mpc83xx_pcie_register_hose(int bus, struct pci_region *reg, - u8 link) -{ - extern void disable_addr_trans(void); /* start.S */ - static struct pci_controller pcie_hose[PCIE_MAX_BUSES]; - struct pci_controller *hose = &pcie_hose[bus]; - int i; - - /* - * There are no spare BATs to remap all PCI-E windows for U-Boot, so - * disable translations. In general, this is not great solution, and - * that's why we don't register PCI-E hoses by default. - */ - disable_addr_trans(); - - for (i = 0; i < 2; i++, reg++) { - if (reg->size == 0) - break; - - hose->regions[i] = *reg; - hose->region_count++; - } - - i = hose->region_count++; - hose->regions[i].bus_start = 0; - hose->regions[i].phys_start = 0; - hose->regions[i].size = gd->ram_size; - hose->regions[i].flags = PCI_REGION_MEM | PCI_REGION_SYS_MEMORY; - - i = hose->region_count++; - hose->regions[i].bus_start = CONFIG_SYS_IMMR; - hose->regions[i].phys_start = CONFIG_SYS_IMMR; - hose->regions[i].size = 0x100000; - hose->regions[i].flags = PCI_REGION_MEM | PCI_REGION_SYS_MEMORY; - - hose->first_busno = pci_last_busno() + 1; - hose->last_busno = 0xff; - - if (bus == 0) - hose->cfg_addr = (unsigned int *)CONFIG_SYS_PCIE1_CFG_BASE; - else - hose->cfg_addr = (unsigned int *)CONFIG_SYS_PCIE2_CFG_BASE; - - pci_set_ops(hose, - pcie_read_config_byte, - pcie_read_config_word, - pcie_read_config_dword, - pcie_write_config_byte, - pcie_write_config_word, - pcie_write_config_dword); - - if (!link) - hose->indirect_type = INDIRECT_TYPE_NO_PCIE_LINK; - - pci_register_hose(hose); - -#ifdef CONFIG_PCI_SCAN_SHOW - printf("PCI: Bus Dev VenId DevId Class Int\n"); -#endif - /* - * Hose scan. - */ - hose->last_busno = pci_hose_scan(hose); -} - -#else - -static void mpc83xx_pcie_register_hose(int bus, struct pci_region *reg, - u8 link) {} - -#endif /* CONFIG_83XX_GENERIC_PCIE_REGISTER_HOSES */ - -static void mpc83xx_pcie_init_bus(int bus, struct pci_region *reg) -{ - immap_t *immr = (immap_t *)CONFIG_SYS_IMMR; - pex83xx_t *pex = &immr->pciexp[bus]; - struct pex_outbound_window *out_win; - struct pex_inbound_window *in_win; - void *hose_cfg_base; - unsigned int ram_sz; - unsigned int barl; - unsigned int tar; - u16 reg16; - int i; - - /* Enable pex csb bridge inbound & outbound transactions */ - out_le32(&pex->bridge.pex_csb_ctrl, - in_le32(&pex->bridge.pex_csb_ctrl) | PEX_CSB_CTRL_OBPIOE | - PEX_CSB_CTRL_IBPIOE); - - /* Enable bridge outbound */ - out_le32(&pex->bridge.pex_csb_obctrl, PEX_CSB_OBCTRL_PIOE | - PEX_CSB_OBCTRL_MEMWE | PEX_CSB_OBCTRL_IOWE | - PEX_CSB_OBCTRL_CFGWE); - - out_win = &pex->bridge.pex_outbound_win[0]; - if (bus) { - out_le32(&out_win->ar, PEX_OWAR_EN | PEX_OWAR_TYPE_CFG | - CONFIG_SYS_PCIE2_CFG_SIZE); - out_le32(&out_win->bar, CONFIG_SYS_PCIE2_CFG_BASE); - } else { - out_le32(&out_win->ar, PEX_OWAR_EN | PEX_OWAR_TYPE_CFG | - CONFIG_SYS_PCIE1_CFG_SIZE); - out_le32(&out_win->bar, CONFIG_SYS_PCIE1_CFG_BASE); - } - out_le32(&out_win->tarl, 0); - out_le32(&out_win->tarh, 0); - - for (i = 0; i < 2; i++, reg++) { - u32 ar; - - if (reg->size == 0) - break; - - out_win = &pex->bridge.pex_outbound_win[i + 1]; - out_le32(&out_win->bar, reg->phys_start); - out_le32(&out_win->tarl, reg->bus_start); - out_le32(&out_win->tarh, 0); - ar = PEX_OWAR_EN | (reg->size & PEX_OWAR_SIZE); - if (reg->flags & PCI_REGION_IO) - ar |= PEX_OWAR_TYPE_IO; - else - ar |= PEX_OWAR_TYPE_MEM; - out_le32(&out_win->ar, ar); - } - - out_le32(&pex->bridge.pex_csb_ibctrl, PEX_CSB_IBCTRL_PIOE); - - ram_sz = gd->ram_size; - barl = 0; - tar = 0; - i = 0; - while (ram_sz > 0) { - in_win = &pex->bridge.pex_inbound_win[i]; - out_le32(&in_win->barl, barl); - out_le32(&in_win->barh, 0x0); - out_le32(&in_win->tar, tar); - if (ram_sz >= 0x10000000) { - /* The maxium windows size is 256M */ - out_le32(&in_win->ar, PEX_IWAR_EN | PEX_IWAR_NSOV | - PEX_IWAR_TYPE_PF | 0x0FFFF000); - barl += 0x10000000; - tar += 0x10000000; - ram_sz -= 0x10000000; - } else { - /* The UM is not clear here. - * So, round up to even Mb boundary */ - - ram_sz = ram_sz >> (20 + - ((ram_sz & 0xFFFFF) ? 1 : 0)); - if (!(ram_sz % 2)) - ram_sz -= 1; - out_le32(&in_win->ar, PEX_IWAR_EN | PEX_IWAR_NSOV | - PEX_IWAR_TYPE_PF | (ram_sz << 20) | 0xFF000); - ram_sz = 0; - } - i++; - } - - in_win = &pex->bridge.pex_inbound_win[i]; - out_le32(&in_win->barl, CONFIG_SYS_IMMR); - out_le32(&in_win->barh, 0); - out_le32(&in_win->tar, CONFIG_SYS_IMMR); - out_le32(&in_win->ar, PEX_IWAR_EN | - PEX_IWAR_TYPE_NO_PF | PEX_IWAR_SIZE_1M); - - /* Enable the host virtual INTX interrupts */ - out_le32(&pex->bridge.pex_int_axi_misc_enb, - in_le32(&pex->bridge.pex_int_axi_misc_enb) | 0x1E0); - - /* Hose configure header is memory-mapped */ - hose_cfg_base = (void *)pex; - - get_clocks(); - /* Configure the PCIE controller core clock ratio */ - out_le32(hose_cfg_base + PEX_GCLK_RATIO, - (((bus ? gd->pciexp2_clk : gd->pciexp1_clk) / 1000000) * 16) - / 333); - udelay(1000000); - - /* Do Type 1 bridge configuration */ - out_8(hose_cfg_base + PCI_PRIMARY_BUS, 0); - out_8(hose_cfg_base + PCI_SECONDARY_BUS, 1); - out_8(hose_cfg_base + PCI_SUBORDINATE_BUS, 255); - - /* - * Write to Command register - */ - reg16 = in_le16(hose_cfg_base + PCI_COMMAND); - reg16 |= PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY | PCI_COMMAND_IO | - PCI_COMMAND_SERR | PCI_COMMAND_PARITY; - out_le16(hose_cfg_base + PCI_COMMAND, reg16); - - /* - * Clear non-reserved bits in status register. - */ - out_le16(hose_cfg_base + PCI_STATUS, 0xffff); - out_8(hose_cfg_base + PCI_LATENCY_TIMER, 0x80); - out_8(hose_cfg_base + PCI_CACHE_LINE_SIZE, 0x08); - - printf("PCIE%d: ", bus); - - reg16 = in_le16(hose_cfg_base + PCI_LTSSM); - if (reg16 >= PCI_LTSSM_L0) - printf("link\n"); - else - printf("No link\n"); - - mpc83xx_pcie_register_hose(bus, reg, reg16 >= PCI_LTSSM_L0); -} - -/* - * The caller must have already set SCCR, SERDES and the PCIE_LAW BARs - * must have been set to cover all of the requested regions. - */ -void mpc83xx_pcie_init(int num_buses, struct pci_region **reg, int warmboot) -{ - int i; - - /* - * Release PCI RST Output signal. - * Power on to RST high must be at least 100 ms as per PCI spec. - * On warm boots only 1 ms is required. - */ - udelay(warmboot ? 1000 : 100000); - - for (i = 0; i < num_buses; i++) - mpc83xx_pcie_init_bus(i, reg[i]); -} |