5 * See file CREDITS for list of people who contributed to this
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.
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.
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,
30 #include <asm/m8260_pci.h>
33 * Local->PCI map (from CPU) controlled by
34 * MPC826x master window
36 * 0x80000000 - 0xBFFFFFFF CPU2PCI space PCIBR0
37 * 0xF4000000 - 0xF7FFFFFF CPU2PCI space PCIBR1
39 * 0x80000000 - 0x9FFFFFFF 0x80000000 - 0x9FFFFFFF (Outbound ATU #1)
40 * PCI Mem with prefetch
42 * 0xA0000000 - 0xBFFFFFFF 0xA0000000 - 0xBFFFFFFF (Outbound ATU #2)
43 * PCI Mem w/o prefetch
45 * 0xF4000000 - 0xF7FFFFFF 0x00000000 - 0x03FFFFFF (Outbound ATU #3)
48 * PCI->Local map (from PCI)
49 * MPC826x slave window controlled by
51 * 0x00000000 - 0x1FFFFFFF 0x00000000 - 0x1FFFFFFF (Inbound ATU #1)
52 * MPC826x local memory
56 * Slave window that allows PCI masters to access MPC826x local memory.
57 * This window is set up using the first set of Inbound ATU registers
60 #ifndef CFG_PCI_SLV_MEM_LOCAL
61 #define PCI_SLV_MEM_LOCAL CFG_SDRAM_BASE /* Local base */
63 #define PCI_SLV_MEM_LOCAL CFG_PCI_SLV_MEM_LOCAL
66 #ifndef CFG_PCI_SLV_MEM_BUS
67 #define PCI_SLV_MEM_BUS 0x00000000 /* PCI base */
69 #define PCI_SLV_MEM_BUS CFG_PCI_SLV_MEM_BUS
72 #ifndef CFG_PICMR0_MASK_ATTRIB
73 #define PICMR0_MASK_ATTRIB (PICMR_MASK_512MB | PICMR_ENABLE | \
76 #define PICMR0_MASK_ATTRIB CFG_PICMR0_MASK_ATTRIB
80 * These are the windows that allow the CPU to access PCI address space.
81 * All three PCI master windows, which allow the CPU to access PCI
82 * prefetch, non prefetch, and IO space (see below), must all fit within
87 #ifndef CFG_PCI_MSTR0_LOCAL
88 #define PCI_MSTR0_LOCAL 0x80000000 /* Local base */
90 #define PCI_MSTR0_LOCAL CFG_PCI_MSTR0_LOCAL
93 #ifndef CFG_PCIMSK0_MASK
94 #define PCIMSK0_MASK PCIMSK_1GB /* Size of window */
96 #define PCIMSK0_MASK CFG_PCIMSK0_MASK
100 #ifndef CFG_PCI_MSTR1_LOCAL
101 #define PCI_MSTR1_LOCAL 0xF4000000 /* Local base */
103 #define PCI_MSTR1_LOCAL CFG_PCI_MSTR1_LOCAL
106 #ifndef CFG_PCIMSK1_MASK
107 #define PCIMSK1_MASK PCIMSK_64MB /* Size of window */
109 #define PCIMSK1_MASK CFG_PCIMSK1_MASK
113 * Master window that allows the CPU to access PCI Memory (prefetch).
114 * This window will be setup with the first set of Outbound ATU registers
118 #ifndef CFG_PCI_MSTR_MEM_LOCAL
119 #define PCI_MSTR_MEM_LOCAL 0x80000000 /* Local base */
121 #define PCI_MSTR_MEM_LOCAL CFG_PCI_MSTR_MEM_LOCAL
124 #ifndef CFG_PCI_MSTR_MEM_BUS
125 #define PCI_MSTR_MEM_BUS 0x80000000 /* PCI base */
127 #define PCI_MSTR_MEM_BUS CFG_PCI_MSTR_MEM_BUS
130 #ifndef CFG_CPU_PCI_MEM_START
131 #define CPU_PCI_MEM_START PCI_MSTR_MEM_LOCAL
133 #define CPU_PCI_MEM_START CFG_CPU_PCI_MEM_START
136 #ifndef CFG_PCI_MSTR_MEM_SIZE
137 #define PCI_MSTR_MEM_SIZE 0x10000000 /* 256MB */
139 #define PCI_MSTR_MEM_SIZE CFG_PCI_MSTR_MEM_SIZE
142 #ifndef CFG_POCMR0_MASK_ATTRIB
143 #define POCMR0_MASK_ATTRIB (POCMR_MASK_256MB | POCMR_ENABLE | POCMR_PREFETCH_EN)
145 #define POCMR0_MASK_ATTRIB CFG_POCMR0_MASK_ATTRIB
149 * Master window that allows the CPU to access PCI Memory (non-prefetch).
150 * This window will be setup with the second set of Outbound ATU registers
154 #ifndef CFG_PCI_MSTR_MEMIO_LOCAL
155 #define PCI_MSTR_MEMIO_LOCAL 0x90000000 /* Local base */
157 #define PCI_MSTR_MEMIO_LOCAL CFG_PCI_MSTR_MEMIO_LOCAL
160 #ifndef CFG_PCI_MSTR_MEMIO_BUS
161 #define PCI_MSTR_MEMIO_BUS 0x90000000 /* PCI base */
163 #define PCI_MSTR_MEMIO_BUS CFG_PCI_MSTR_MEMIO_BUS
166 #ifndef CFG_CPU_PCI_MEMIO_START
167 #define CPU_PCI_MEMIO_START PCI_MSTR_MEMIO_LOCAL
169 #define CPU_PCI_MEMIO_START CFG_CPU_PCI_MEMIO_START
172 #ifndef CFG_PCI_MSTR_MEMIO_SIZE
173 #define PCI_MSTR_MEMIO_SIZE 0x20000000 /* 512MB */
175 #define PCI_MSTR_MEMIO_SIZE CFG_PCI_MSTR_MEMIO_SIZE
178 #ifndef CFG_POCMR1_MASK_ATTRIB
179 #define POCMR1_MASK_ATTRIB (POCMR_MASK_512MB | POCMR_ENABLE)
181 #define POCMR1_MASK_ATTRIB CFG_POCMR1_MASK_ATTRIB
185 * Master window that allows the CPU to access PCI IO space.
186 * This window will be setup with the third set of Outbound ATU registers
190 #ifndef CFG_PCI_MSTR_IO_LOCAL
191 #define PCI_MSTR_IO_LOCAL 0xA0000000 /* Local base */
193 #define PCI_MSTR_IO_LOCAL CFG_PCI_MSTR_IO_LOCAL
196 #ifndef CFG_PCI_MSTR_IO_BUS
197 #define PCI_MSTR_IO_BUS 0xA0000000 /* PCI base */
199 #define PCI_MSTR_IO_BUS CFG_PCI_MSTR_IO_BUS
202 #ifndef CFG_CPU_PCI_IO_START
203 #define CPU_PCI_IO_START PCI_MSTR_IO_LOCAL
205 #define CPU_PCI_IO_START CFG_CPU_PCI_IO_START
208 #ifndef CFG_PCI_MSTR_IO_SIZE
209 #define PCI_MSTR_IO_SIZE 0x10000000 /* 256MB */
211 #define PCI_MSTR_IO_SIZE CFG_PCI_MSTR_IO_SIZE
214 #ifndef CFG_POCMR2_MASK_ATTRIB
215 #define POCMR2_MASK_ATTRIB (POCMR_MASK_256MB | POCMR_ENABLE | POCMR_PCI_IO)
217 #define POCMR2_MASK_ATTRIB CFG_POCMR2_MASK_ATTRIB
220 /* PCI bus configuration registers.
223 #define PCI_CLASS_BRIDGE_CTLR 0x06
226 static inline void pci_outl(u32 addr, u32 data)
228 *(volatile u32 *) addr = cpu_to_le32(data);
231 void pci_mpc8250_init(struct pci_controller *hose)
233 #ifdef CONFIG_MPC8266ADS
234 DECLARE_GLOBAL_DATA_PTR;
237 u32 immr_addr = CFG_IMMR;
238 volatile immap_t *immap = (immap_t *) CFG_IMMR;
239 pci_dev_t host_devno = PCI_BDF(0, 0, 0);
241 pci_setup_indirect(hose, CFG_IMMR + PCI_CFG_ADDR_REG,
242 CFG_IMMR + PCI_CFG_DATA_REG);
245 * Setting required to enable local bus for PCI (SIUMCR [LBPC]).
247 #ifdef CONFIG_MPC8266ADS
248 immap->im_siu_conf.sc_siumcr = (immap->im_siu_conf.sc_siumcr & ~SIUMCR_LBPC11)
252 * Setting required to enable IRQ1-IRQ7 (SIUMCR [DPPC]),
253 * and local bus for PCI (SIUMCR [LBPC]).
255 immap->im_siu_conf.sc_siumcr = 0x00640000;
258 /* Make PCI lowest priority */
259 /* Each 4 bits is a device bus request and the MS 4bits
260 is highest priority */
270 External Master 1 0b0111
271 External Master 2 0b1000
272 External Master 3 0b1001
273 The rest are reserved */
274 immap->im_siu_conf.sc_ppc_alrh = 0x61207893;
276 /* Park bus on core while modifying PCI Bus accesses */
277 immap->im_siu_conf.sc_ppc_acr = 0x6;
280 * Set up master windows that allow the CPU to access PCI space. These
281 * windows are set up using the two SIU PCIBR registers.
283 *(volatile unsigned long*)(immr_addr + M8265_PCIMSK0) = PCIMSK0_MASK;
284 *(volatile unsigned long*)(immr_addr + M8265_PCIBR0) =
285 PCI_MSTR0_LOCAL | PCIBR_ENABLE;
287 #ifdef CONFIG_MPC8266ADS
288 *(volatile unsigned long*)(immr_addr + M8265_PCIMSK1) = PCIMSK1_MASK;
289 *(volatile unsigned long*)(immr_addr + M8265_PCIBR1) =
290 PCI_MSTR1_LOCAL | PCIBR_ENABLE;
293 /* Release PCI RST (by default the PCI RST signal is held low) */
294 pci_outl (immr_addr | PCI_GCR_REG, PCIGCR_PCI_BUS_EN);
296 /* give it some time */
298 #ifdef CONFIG_MPC8266ADS
299 /* Give the PCI cards more time to initialize before query
300 This might be good for other boards also
303 for (i = 0; i < 1000; ++i)
309 * Set up master window that allows the CPU to access PCI Memory (prefetch)
310 * space. This window is set up using the first set of Outbound ATU registers.
312 pci_outl (immr_addr | POTAR_REG0, PCI_MSTR_MEM_BUS >> 12); /* PCI base */
313 pci_outl (immr_addr | POBAR_REG0, PCI_MSTR_MEM_LOCAL >> 12); /* Local base */
314 pci_outl (immr_addr | POCMR_REG0, POCMR0_MASK_ATTRIB); /* Size & attribute */
317 * Set up master window that allows the CPU to access PCI Memory (non-prefetch)
318 * space. This window is set up using the second set of Outbound ATU registers.
320 pci_outl (immr_addr | POTAR_REG1, PCI_MSTR_MEMIO_BUS >> 12); /* PCI base */
321 pci_outl (immr_addr | POBAR_REG1, PCI_MSTR_MEMIO_LOCAL >> 12); /* Local base */
322 pci_outl (immr_addr | POCMR_REG1, POCMR1_MASK_ATTRIB); /* Size & attribute */
325 * Set up master window that allows the CPU to access PCI IO space. This window
326 * is set up using the third set of Outbound ATU registers.
328 pci_outl (immr_addr | POTAR_REG2, PCI_MSTR_IO_BUS >> 12); /* PCI base */
329 pci_outl (immr_addr | POBAR_REG2, PCI_MSTR_IO_LOCAL >> 12); /* Local base */
330 pci_outl (immr_addr | POCMR_REG2, POCMR2_MASK_ATTRIB); /* Size & attribute */
333 * Set up slave window that allows PCI masters to access MPC826x local memory.
334 * This window is set up using the first set of Inbound ATU registers
336 pci_outl (immr_addr | PITAR_REG0, PCI_SLV_MEM_LOCAL >> 12); /* Local base */
337 pci_outl (immr_addr | PIBAR_REG0, PCI_SLV_MEM_BUS >> 12); /* PCI base */
338 pci_outl (immr_addr | PICMR_REG0, PICMR0_MASK_ATTRIB); /* Size & attribute */
340 /* See above for description - puts PCI request as highest priority */
341 immap->im_siu_conf.sc_ppc_alrh = 0x03124567;
343 /* Park the bus on the PCI */
344 immap->im_siu_conf.sc_ppc_acr = PPC_ACR_BUS_PARK_PCI;
346 /* Host mode - specify the bridge as a host-PCI bridge */
348 pci_hose_write_config_byte(hose, host_devno, PCI_CLASS_CODE,
349 PCI_CLASS_BRIDGE_CTLR);
351 /* Enable the host bridge to be a master on the PCI bus, and to act as a PCI memory target */
352 pci_hose_read_config_word(hose, host_devno, PCI_COMMAND, &tempShort);
353 pci_hose_write_config_word(hose, host_devno, PCI_COMMAND,
354 tempShort | PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY);
356 hose->first_busno = 0;
357 hose->last_busno = 0xff;
359 /* System memory space */
360 #ifdef CONFIG_MPC8266ADS
361 pci_set_region(hose->regions + 0,
365 PCI_REGION_MEM | PCI_REGION_MEMORY);
367 pci_set_region(hose->regions + 0,
371 PCI_REGION_MEM | PCI_REGION_MEMORY);
374 /* PCI memory space */
375 #ifdef CONFIG_MPC8266ADS
376 pci_set_region(hose->regions + 0,
380 PCI_REGION_MEM | PCI_REGION_MEMORY);
382 pci_set_region(hose->regions + 1,
390 pci_set_region(hose->regions + 2,
396 hose->region_count = 3;
398 pci_register_hose(hose);
400 hose->last_busno = pci_hose_scan(hose);
403 #endif /* CONFIG_PCI */