/* * (C) Copyright 2003 * AMIRIX Systems Inc. * * 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> #include <ppc4xx.h> #include <asm/processor.h> #include <pci.h> #define PCI_MEM_82559ER_CSR_BASE 0x30200000 #define PCI_IO_82559ER_CSR_BASE 0x40000200 /** AP1100 specific values */ #define PSII_BASE 0x30000000 /**< PowerSpan II dual bridge local bus register address */ #define PSII_CONFIG_ADDR 0x30000290 /**< PowerSpan II Configuration Cycle Address configuration register */ #define PSII_CONFIG_DATA 0x30000294 /**< PowerSpan II Configuration Cycle Data register. */ #define PSII_CONFIG_DEST_PCI2 0x01000000 /**< PowerSpan II configuration cycle destination selection, set for PCI2 bus */ #define PSII_PCI_MEM_BASE 0x30200000 /**< Local Bus address for start of PCI memory space on PCI2 bus. */ #define PSII_PCI_MEM_SIZE 0x1BE00000 /**< PCI Memory space about 510 Meg. */ #define AP1000_SYS_MEM_START 0x00000000 /**< System memory starts at 0. */ #define AP1000_SYS_MEM_SIZE 0x08000000 /**< System memory is 128 Meg. */ /* static int G_verbosity_level = 1; */ #define G_verbosity_level 1 void write1 (unsigned long addr, unsigned char val) { volatile unsigned char *p = (volatile unsigned char *) addr; if (G_verbosity_level > 1) printf ("write1: addr=%08x val=%02x\n", (unsigned int) addr, val); *p = val; asm ("eieio"); } unsigned char read1 (unsigned long addr) { unsigned char val; volatile unsigned char *p = (volatile unsigned char *) addr; if (G_verbosity_level > 1) printf ("read1: addr=%08x ", (unsigned int) addr); val = *p; asm ("eieio"); if (G_verbosity_level > 1) printf ("val=%08x\n", val); return val; } void write2 (unsigned long addr, unsigned short val) { volatile unsigned short *p = (volatile unsigned short *) addr; if (G_verbosity_level > 1) printf ("write2: addr=%08x val=%04x -> *p=%04x\n", (unsigned int) addr, val, ((val & 0xFF00) >> 8) | ((val & 0x00FF) << 8)); *p = ((val & 0xFF00) >> 8) | ((val & 0x00FF) << 8); asm ("eieio"); } unsigned short read2 (unsigned long addr) { unsigned short val; volatile unsigned short *p = (volatile unsigned short *) addr; if (G_verbosity_level > 1) printf ("read2: addr=%08x ", (unsigned int) addr); val = *p; val = ((val & 0xFF00) >> 8) | ((val & 0x00FF) << 8); asm ("eieio"); if (G_verbosity_level > 1) printf ("*p=%04x -> val=%04x\n", ((val & 0xFF00) >> 8) | ((val & 0x00FF) << 8), val); return val; } void write4 (unsigned long addr, unsigned long val) { volatile unsigned long *p = (volatile unsigned long *) addr; if (G_verbosity_level > 1) printf ("write4: addr=%08x val=%08x -> *p=%08x\n", (unsigned int) addr, (unsigned int) val, (unsigned int) (((val & 0xFF000000) >> 24) | ((val & 0x000000FF) << 24) | ((val & 0x00FF0000) >> 8) | ((val & 0x0000FF00) << 8))); *p = ((val & 0xFF000000) >> 24) | ((val & 0x000000FF) << 24) | ((val & 0x00FF0000) >> 8) | ((val & 0x0000FF00) << 8); asm ("eieio"); } unsigned long read4 (unsigned long addr) { unsigned long val; volatile unsigned long *p = (volatile unsigned long *) addr; if (G_verbosity_level > 1) printf ("read4: addr=%08x", (unsigned int) addr); val = *p; val = ((val & 0xFF000000) >> 24) | ((val & 0x000000FF) << 24) | ((val & 0x00FF0000) >> 8) | ((val & 0x0000FF00) << 8); asm ("eieio"); if (G_verbosity_level > 1) printf ("*p=%04x -> val=%04x\n", (unsigned int) (((val & 0xFF000000) >> 24) | ((val & 0x000000FF) << 24) | ((val & 0x00FF0000) >> 8) | ((val & 0x0000FF00) << 8)), (unsigned int) val); return val; } void write4be (unsigned long addr, unsigned long val) { volatile unsigned long *p = (volatile unsigned long *) addr; if (G_verbosity_level > 1) printf ("write4: addr=%08x val=%08x\n", (unsigned int) addr, (unsigned int) val); *p = val; asm ("eieio"); } /** One byte configuration write on PSII. * Currently fixes destination PCI bus to PCI2, onboard * pci. * @param hose PCI Host controller information. Ignored. * @param dev Encoded PCI device/Bus and Function value. * @param reg PCI Configuration register number. * @param val Address of location for received byte. * @return Always Zero. */ static int psII_read_config_byte (struct pci_controller *hose, pci_dev_t dev, int reg, u8 * val) { write4be (PSII_CONFIG_ADDR, PSII_CONFIG_DEST_PCI2 | /* Operate on PCI2 bus interface . */ (PCI_BUS (dev) << 16) | (PCI_DEV (dev) << 11) | (PCI_FUNC (dev) << 8) | ((reg & 0xFF) & ~3)); /* Configuation cycle type 0 */ *val = read1 (PSII_CONFIG_DATA + (reg & 0x03)); return (0); } /** One byte configuration write on PSII. * Currently fixes destination bus to PCI2, onboard * pci. * @param hose PCI Host controller information. Ignored. * @param dev Encoded PCI device/Bus and Function value. * @param reg PCI Configuration register number. * @param val Output byte. * @return Always Zero. */ static int psII_write_config_byte (struct pci_controller *hose, pci_dev_t dev, int reg, u8 val) { write4be (PSII_CONFIG_ADDR, PSII_CONFIG_DEST_PCI2 | /* Operate on PCI2 bus interface . */ (PCI_BUS (dev) << 16) | (PCI_DEV (dev) << 11) | (PCI_FUNC (dev) << 8) | ((reg & 0xFF) & ~3)); /* Configuation cycle type 0 */ write1 (PSII_CONFIG_DATA + (reg & 0x03), (unsigned char) val); return (0); } /** One word (16 bit) configuration read on PSII. * Currently fixes destination PCI bus to PCI2, onboard * pci. * @param hose PCI Host controller information. Ignored. * @param dev Encoded PCI device/Bus and Function value. * @param reg PCI Configuration register number. * @param val Address of location for received word. * @return Always Zero. */ static int psII_read_config_word (struct pci_controller *hose, pci_dev_t dev, int reg, u16 * val) { write4be (PSII_CONFIG_ADDR, PSII_CONFIG_DEST_PCI2 | /* Operate on PCI2 bus interface . */ (PCI_BUS (dev) << 16) | (PCI_DEV (dev) << 11) | (PCI_FUNC (dev) << 8) | ((reg & 0xFF) & ~3)); /* Configuation cycle type 0 */ *val = read2 (PSII_CONFIG_DATA + (reg & 0x03)); return (0); } /** One word (16 bit) configuration write on PSII. * Currently fixes destination bus to PCI2, onboard * pci. * @param hose PCI Host controller information. Ignored. * @param dev Encoded PCI device/Bus and Function value. * @param reg PCI Configuration register number. * @param val Output word. * @return Always Zero. */ static int psII_write_config_word (struct pci_controller *hose, pci_dev_t dev, int reg, u16 val) { write4be (PSII_CONFIG_ADDR, PSII_CONFIG_DEST_PCI2 | /* Operate on PCI2 bus interface . */ (PCI_BUS (dev) << 16) | (PCI_DEV (dev) << 11) | (PCI_FUNC (dev) << 8) | ((reg & 0xFF) & ~3)); /* Configuation cycle type 0 */ write2 (PSII_CONFIG_DATA + (reg & 0x03), (unsigned short) val); return (0); } /** One DWord (32 bit) configuration read on PSII. * Currently fixes destination PCI bus to PCI2, onboard * pci. * @param hose PCI Host controller information. Ignored. * @param dev Encoded PCI device/Bus and Function value. * @param reg PCI Configuration register number. * @param val Address of location for received byte. * @return Always Zero. */ static int psII_read_config_dword (struct pci_controller *hose, pci_dev_t dev, int reg, u32 * val) { write4be (PSII_CONFIG_ADDR, PSII_CONFIG_DEST_PCI2 | /* Operate on PCI2 bus interface . */ (PCI_BUS (dev) << 16) | (PCI_DEV (dev) << 11) | (PCI_FUNC (dev) << 8) | ((reg & 0xFF) & ~3)); /* Configuation cycle type 0 */ *val = read4 (PSII_CONFIG_DATA); return (0); } /** One DWord (32 bit) configuration write on PSII. * Currently fixes destination bus to PCI2, onboard * pci. * @param hose PCI Host controller information. Ignored. * @param dev Encoded PCI device/Bus and Function value. * @param reg PCI Configuration register number. * @param val Output Dword. * @return Always Zero. */ static int psII_write_config_dword (struct pci_controller *hose, pci_dev_t dev, int reg, u32 val) { write4be (PSII_CONFIG_ADDR, PSII_CONFIG_DEST_PCI2 | /* Operate on PCI2 bus interface . */ (PCI_BUS (dev) << 16) | (PCI_DEV (dev) << 11) | (PCI_FUNC (dev) << 8) | ((reg & 0xFF) & ~3)); /* Configuation cycle type 0 */ write4 (PSII_CONFIG_DATA, (unsigned long) val); return (0); } static struct pci_config_table ap1000_config_table[] = { #ifdef CONFIG_AP1000 {PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_BUS (CONFIG_SYS_ETH_DEV_FN), PCI_DEV (CONFIG_SYS_ETH_DEV_FN), PCI_FUNC (CONFIG_SYS_ETH_DEV_FN), pci_cfgfunc_config_device, {CONFIG_SYS_ETH_IOBASE, CONFIG_SYS_ETH_MEMBASE, PCI_COMMAND_IO | PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER}}, #endif {} }; static struct pci_controller psII_hose = { config_table:ap1000_config_table, }; void pci_init_board (void) { struct pci_controller *hose = &psII_hose; /* * Register the hose */ hose->first_busno = 0; hose->last_busno = 0xff; /* System memory space */ pci_set_region (hose->regions + 0, AP1000_SYS_MEM_START, AP1000_SYS_MEM_START, AP1000_SYS_MEM_SIZE, PCI_REGION_MEM | PCI_REGION_SYS_MEMORY); /* PCI Memory space */ pci_set_region (hose->regions + 1, PSII_PCI_MEM_BASE, PSII_PCI_MEM_BASE, PSII_PCI_MEM_SIZE, PCI_REGION_MEM); /* No IO Memory space - for now */ pci_set_ops (hose, psII_read_config_byte, psII_read_config_word, psII_read_config_dword, psII_write_config_byte, psII_write_config_word, psII_write_config_dword); hose->region_count = 2; pci_register_hose (hose); hose->last_busno = pci_hose_scan (hose); }