Wolfgang Denk | 7521af1 | 2005-10-09 01:04:33 +0200 | [diff] [blame^] | 1 | /* |
| 2 | * (C) Copyright 2003 |
| 3 | * AMIRIX Systems Inc. |
| 4 | * |
| 5 | * See file CREDITS for list of people who contributed to this |
| 6 | * project. |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or |
| 9 | * modify it under the terms of the GNU General Public License as |
| 10 | * published by the Free Software Foundation; either version 2 of |
| 11 | * the License, or (at your option) any later version. |
| 12 | * |
| 13 | * This program is distributed in the hope that it will be useful, |
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | * GNU General Public License for more details. |
| 17 | * |
| 18 | * You should have received a copy of the GNU General Public License |
| 19 | * along with this program; if not, write to the Free Software |
| 20 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, |
| 21 | * MA 02111-1307 USA |
| 22 | */ |
| 23 | |
| 24 | #include <common.h> |
| 25 | #include <ppc4xx.h> |
| 26 | #include <asm/processor.h> |
| 27 | #include <pci.h> |
| 28 | |
| 29 | #define PCI_MEM_82559ER_CSR_BASE 0x30200000 |
| 30 | #define PCI_IO_82559ER_CSR_BASE 0x40000200 |
| 31 | |
| 32 | /** AP1100 specific values */ |
| 33 | #define PSII_BASE 0x30000000 /**< PowerSpan II dual bridge local bus register address */ |
| 34 | #define PSII_CONFIG_ADDR 0x30000290 /**< PowerSpan II Configuration Cycle Address configuration register */ |
| 35 | #define PSII_CONFIG_DATA 0x30000294 /**< PowerSpan II Configuration Cycle Data register. */ |
| 36 | #define PSII_CONFIG_DEST_PCI2 0x01000000 /**< PowerSpan II configuration cycle destination selection, set for PCI2 bus */ |
| 37 | #define PSII_PCI_MEM_BASE 0x30200000 /**< Local Bus address for start of PCI memory space on PCI2 bus. */ |
| 38 | #define PSII_PCI_MEM_SIZE 0x1BE00000 /**< PCI Memory space about 510 Meg. */ |
| 39 | #define AP1000_SYS_MEM_START 0x00000000 /**< System memory starts at 0. */ |
| 40 | #define AP1000_SYS_MEM_SIZE 0x08000000 /**< System memory is 128 Meg. */ |
| 41 | |
| 42 | /* static int G_verbosity_level = 1; */ |
| 43 | #define G_verbosity_level 1 |
| 44 | |
| 45 | void write1(unsigned long addr, unsigned char val) { |
| 46 | volatile unsigned char* p = (volatile unsigned char*)addr; |
| 47 | |
| 48 | if(G_verbosity_level > 1) |
| 49 | printf("write1: addr=%08x val=%02x\n", (unsigned int)addr, val); |
| 50 | *p = val; |
| 51 | asm("eieio"); |
| 52 | } |
| 53 | |
| 54 | unsigned char read1(unsigned long addr) { |
| 55 | unsigned char val; |
| 56 | volatile unsigned char* p = (volatile unsigned char*)addr; |
| 57 | |
| 58 | if(G_verbosity_level > 1) |
| 59 | printf("read1: addr=%08x ", (unsigned int)addr); |
| 60 | val = *p; |
| 61 | asm("eieio"); |
| 62 | if(G_verbosity_level > 1) |
| 63 | printf("val=%08x\n", val); |
| 64 | return val; |
| 65 | } |
| 66 | |
| 67 | void write2(unsigned long addr, unsigned short val) { |
| 68 | volatile unsigned short* p = (volatile unsigned short*)addr; |
| 69 | |
| 70 | if(G_verbosity_level > 1) |
| 71 | printf("write2: addr=%08x val=%04x -> *p=%04x\n", (unsigned int)addr, val, |
| 72 | ((val & 0xFF00) >> 8) | ((val & 0x00FF) << 8)); |
| 73 | |
| 74 | *p = ((val & 0xFF00) >> 8) | ((val & 0x00FF) << 8); |
| 75 | asm("eieio"); |
| 76 | } |
| 77 | |
| 78 | unsigned short read2(unsigned long addr) { |
| 79 | unsigned short val; |
| 80 | volatile unsigned short* p = (volatile unsigned short*)addr; |
| 81 | |
| 82 | if(G_verbosity_level > 1) |
| 83 | printf("read2: addr=%08x ", (unsigned int)addr); |
| 84 | val = *p; |
| 85 | val = ((val & 0xFF00) >> 8) | ((val & 0x00FF) << 8); |
| 86 | asm("eieio"); |
| 87 | if(G_verbosity_level > 1) |
| 88 | printf("*p=%04x -> val=%04x\n", |
| 89 | ((val & 0xFF00) >> 8) | ((val & 0x00FF) << 8), val); |
| 90 | return val; |
| 91 | } |
| 92 | |
| 93 | void write4(unsigned long addr, unsigned long val) { |
| 94 | volatile unsigned long* p = (volatile unsigned long*)addr; |
| 95 | |
| 96 | if(G_verbosity_level > 1) |
| 97 | printf("write4: addr=%08x val=%08x -> *p=%08x\n", (unsigned int)addr, (unsigned int)val, |
| 98 | (unsigned int)(((val & 0xFF000000) >> 24) | ((val & 0x000000FF) << 24) | |
| 99 | ((val & 0x00FF0000) >> 8) | ((val & 0x0000FF00) << 8))); |
| 100 | |
| 101 | *p = ((val & 0xFF000000) >> 24) | ((val & 0x000000FF) << 24) | |
| 102 | ((val & 0x00FF0000) >> 8) | ((val & 0x0000FF00) << 8); |
| 103 | asm("eieio"); |
| 104 | } |
| 105 | |
| 106 | unsigned long read4(unsigned long addr) { |
| 107 | unsigned long val; |
| 108 | volatile unsigned long* p = (volatile unsigned long*)addr; |
| 109 | |
| 110 | if(G_verbosity_level > 1) |
| 111 | printf("read4: addr=%08x", (unsigned int)addr); |
| 112 | |
| 113 | val = *p; |
| 114 | val = ((val & 0xFF000000) >> 24) | ((val & 0x000000FF) << 24) | |
| 115 | ((val & 0x00FF0000) >> 8) | ((val & 0x0000FF00) << 8); |
| 116 | asm("eieio"); |
| 117 | |
| 118 | if(G_verbosity_level > 1) |
| 119 | printf("*p=%04x -> val=%04x\n", |
| 120 | (unsigned int)(((val & 0xFF000000) >> 24) | ((val & 0x000000FF) << 24) | |
| 121 | ((val & 0x00FF0000) >> 8) | ((val & 0x0000FF00) << 8)), (unsigned int)val); |
| 122 | return val; |
| 123 | } |
| 124 | |
| 125 | void write4be(unsigned long addr, unsigned long val) { |
| 126 | volatile unsigned long* p = (volatile unsigned long*)addr; |
| 127 | |
| 128 | if(G_verbosity_level > 1) |
| 129 | printf("write4: addr=%08x val=%08x\n", (unsigned int)addr, (unsigned int)val); |
| 130 | *p = val; |
| 131 | asm("eieio"); |
| 132 | } |
| 133 | |
| 134 | /** One byte configuration write on PSII. |
| 135 | * Currently fixes destination PCI bus to PCI2, onboard |
| 136 | * pci. |
| 137 | * @param hose PCI Host controller information. Ignored. |
| 138 | * @param dev Encoded PCI device/Bus and Function value. |
| 139 | * @param reg PCI Configuration register number. |
| 140 | * @param val Address of location for received byte. |
| 141 | * @return Always Zero. |
| 142 | */ |
| 143 | static int psII_read_config_byte( |
| 144 | struct pci_controller *hose, |
| 145 | pci_dev_t dev, |
| 146 | int reg, |
| 147 | u8 *val) |
| 148 | { |
| 149 | write4be(PSII_CONFIG_ADDR, |
| 150 | PSII_CONFIG_DEST_PCI2 | /* Operate on PCI2 bus interface . */ |
| 151 | (PCI_BUS(dev) << 16) | |
| 152 | (PCI_DEV(dev) << 11) | |
| 153 | (PCI_FUNC(dev) << 8) | |
| 154 | ((reg & 0xFF) & ~3)); /* Configuation cycle type 0 */ |
| 155 | |
| 156 | *val = read1(PSII_CONFIG_DATA+(reg&0x03)); |
| 157 | return(0); |
| 158 | } |
| 159 | |
| 160 | /** One byte configuration write on PSII. |
| 161 | * Currently fixes destination bus to PCI2, onboard |
| 162 | * pci. |
| 163 | * @param hose PCI Host controller information. Ignored. |
| 164 | * @param dev Encoded PCI device/Bus and Function value. |
| 165 | * @param reg PCI Configuration register number. |
| 166 | * @param val Output byte. |
| 167 | * @return Always Zero. |
| 168 | */ |
| 169 | static int psII_write_config_byte( |
| 170 | struct pci_controller *hose, |
| 171 | pci_dev_t dev, |
| 172 | int reg, |
| 173 | u8 val) |
| 174 | { |
| 175 | write4be(PSII_CONFIG_ADDR, |
| 176 | PSII_CONFIG_DEST_PCI2 | /* Operate on PCI2 bus interface . */ |
| 177 | (PCI_BUS(dev) << 16) | |
| 178 | (PCI_DEV(dev) << 11) | |
| 179 | (PCI_FUNC(dev) << 8) | |
| 180 | ((reg & 0xFF) & ~3)); /* Configuation cycle type 0 */ |
| 181 | |
| 182 | write1(PSII_CONFIG_DATA+(reg&0x03),(unsigned char )val); |
| 183 | |
| 184 | return(0); |
| 185 | } |
| 186 | |
| 187 | /** One word (16 bit) configuration read on PSII. |
| 188 | * Currently fixes destination PCI bus to PCI2, onboard |
| 189 | * pci. |
| 190 | * @param hose PCI Host controller information. Ignored. |
| 191 | * @param dev Encoded PCI device/Bus and Function value. |
| 192 | * @param reg PCI Configuration register number. |
| 193 | * @param val Address of location for received word. |
| 194 | * @return Always Zero. |
| 195 | */ |
| 196 | static int psII_read_config_word( |
| 197 | struct pci_controller *hose, |
| 198 | pci_dev_t dev, |
| 199 | int reg, |
| 200 | u16 *val) |
| 201 | { |
| 202 | write4be(PSII_CONFIG_ADDR, |
| 203 | PSII_CONFIG_DEST_PCI2 | /* Operate on PCI2 bus interface . */ |
| 204 | (PCI_BUS(dev) << 16) | |
| 205 | (PCI_DEV(dev) << 11) | |
| 206 | (PCI_FUNC(dev) << 8) | |
| 207 | ((reg & 0xFF) & ~3)); /* Configuation cycle type 0 */ |
| 208 | |
| 209 | *val = read2(PSII_CONFIG_DATA+(reg&0x03)); |
| 210 | return(0); |
| 211 | } |
| 212 | |
| 213 | /** One word (16 bit) configuration write on PSII. |
| 214 | * Currently fixes destination bus to PCI2, onboard |
| 215 | * pci. |
| 216 | * @param hose PCI Host controller information. Ignored. |
| 217 | * @param dev Encoded PCI device/Bus and Function value. |
| 218 | * @param reg PCI Configuration register number. |
| 219 | * @param val Output word. |
| 220 | * @return Always Zero. |
| 221 | */ |
| 222 | static int psII_write_config_word( |
| 223 | struct pci_controller *hose, |
| 224 | pci_dev_t dev, |
| 225 | int reg, |
| 226 | u16 val) |
| 227 | { |
| 228 | write4be(PSII_CONFIG_ADDR, |
| 229 | PSII_CONFIG_DEST_PCI2 | /* Operate on PCI2 bus interface . */ |
| 230 | (PCI_BUS(dev) << 16) | |
| 231 | (PCI_DEV(dev) << 11) | |
| 232 | (PCI_FUNC(dev) << 8) | |
| 233 | ((reg & 0xFF) & ~3)); /* Configuation cycle type 0 */ |
| 234 | |
| 235 | write2(PSII_CONFIG_DATA+(reg&0x03),(unsigned short )val); |
| 236 | |
| 237 | return(0); |
| 238 | } |
| 239 | |
| 240 | /** One DWord (32 bit) configuration read on PSII. |
| 241 | * Currently fixes destination PCI bus to PCI2, onboard |
| 242 | * pci. |
| 243 | * @param hose PCI Host controller information. Ignored. |
| 244 | * @param dev Encoded PCI device/Bus and Function value. |
| 245 | * @param reg PCI Configuration register number. |
| 246 | * @param val Address of location for received byte. |
| 247 | * @return Always Zero. |
| 248 | */ |
| 249 | static int psII_read_config_dword( |
| 250 | struct pci_controller *hose, |
| 251 | pci_dev_t dev, |
| 252 | int reg, |
| 253 | u32 *val) |
| 254 | { |
| 255 | write4be(PSII_CONFIG_ADDR, |
| 256 | PSII_CONFIG_DEST_PCI2 | /* Operate on PCI2 bus interface . */ |
| 257 | (PCI_BUS(dev) << 16) | |
| 258 | (PCI_DEV(dev) << 11) | |
| 259 | (PCI_FUNC(dev) << 8) | |
| 260 | ((reg & 0xFF) & ~3)); /* Configuation cycle type 0 */ |
| 261 | |
| 262 | *val = read4(PSII_CONFIG_DATA); |
| 263 | return(0); |
| 264 | } |
| 265 | |
| 266 | /** One DWord (32 bit) configuration write on PSII. |
| 267 | * Currently fixes destination bus to PCI2, onboard |
| 268 | * pci. |
| 269 | * @param hose PCI Host controller information. Ignored. |
| 270 | * @param dev Encoded PCI device/Bus and Function value. |
| 271 | * @param reg PCI Configuration register number. |
| 272 | * @param val Output Dword. |
| 273 | * @return Always Zero. |
| 274 | */ |
| 275 | static int psII_write_config_dword( |
| 276 | struct pci_controller *hose, |
| 277 | pci_dev_t dev, |
| 278 | int reg, |
| 279 | u32 val) |
| 280 | { |
| 281 | write4be(PSII_CONFIG_ADDR, |
| 282 | PSII_CONFIG_DEST_PCI2 | /* Operate on PCI2 bus interface . */ |
| 283 | (PCI_BUS(dev) << 16) | |
| 284 | (PCI_DEV(dev) << 11) | |
| 285 | (PCI_FUNC(dev) << 8) | |
| 286 | ((reg & 0xFF) & ~3)); /* Configuation cycle type 0 */ |
| 287 | |
| 288 | write4(PSII_CONFIG_DATA,(unsigned long)val); |
| 289 | |
| 290 | return(0); |
| 291 | } |
| 292 | |
| 293 | |
| 294 | |
| 295 | static struct pci_config_table ap1000_config_table[] = { |
| 296 | #ifdef CONFIG_AP1000 |
| 297 | {PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, |
| 298 | PCI_BUS(CFG_ETH_DEV_FN), PCI_DEV(CFG_ETH_DEV_FN), PCI_FUNC(CFG_ETH_DEV_FN), |
| 299 | pci_cfgfunc_config_device, |
| 300 | {CFG_ETH_IOBASE, CFG_ETH_MEMBASE, PCI_COMMAND_IO | PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER }}, |
| 301 | #endif |
| 302 | { } |
| 303 | }; |
| 304 | |
| 305 | |
| 306 | static struct pci_controller psII_hose = { |
| 307 | config_table: ap1000_config_table, |
| 308 | }; |
| 309 | |
| 310 | void pci_init_board(void) |
| 311 | { |
| 312 | struct pci_controller *hose = &psII_hose; |
| 313 | |
| 314 | /* |
| 315 | * Register the hose |
| 316 | */ |
| 317 | hose->first_busno = 0; |
| 318 | hose->last_busno = 0xff; |
| 319 | |
| 320 | |
| 321 | /* System memory space */ |
| 322 | pci_set_region(hose->regions + 0, |
| 323 | AP1000_SYS_MEM_START, AP1000_SYS_MEM_START, AP1000_SYS_MEM_SIZE, |
| 324 | PCI_REGION_MEM | PCI_REGION_MEMORY); |
| 325 | |
| 326 | /* PCI Memory space */ |
| 327 | pci_set_region(hose->regions + 1, |
| 328 | PSII_PCI_MEM_BASE, PSII_PCI_MEM_BASE, PSII_PCI_MEM_SIZE, |
| 329 | PCI_REGION_MEM); |
| 330 | |
| 331 | /* No IO Memory space - for now */ |
| 332 | |
| 333 | pci_set_ops(hose, |
| 334 | psII_read_config_byte, |
| 335 | psII_read_config_word, |
| 336 | psII_read_config_dword, |
| 337 | psII_write_config_byte, |
| 338 | psII_write_config_word, |
| 339 | psII_write_config_dword); |
| 340 | |
| 341 | hose->region_count = 2; |
| 342 | |
| 343 | pci_register_hose(hose); |
| 344 | |
| 345 | hose->last_busno = pci_hose_scan(hose); |
| 346 | } |