2 * MPC86XX pci setup code
4 * Recode: ZHANG WEI <wei.zhang@freescale.com>
5 * Initial author: Xianghua Xiao <x.xiao@freescale.com>
7 * Copyright 2006 Freescale Semiconductor Inc.
9 * This program is free software; you can redistribute it and/or modify it
10 * under the terms of the GNU General Public License as published by the
11 * Free Software Foundation; either version 2 of the License, or (at your
12 * option) any later version.
15 #include <linux/types.h>
16 #include <linux/module.h>
17 #include <linux/init.h>
18 #include <linux/pci.h>
19 #include <linux/serial.h>
21 #include <asm/system.h>
22 #include <asm/atomic.h>
25 #include <asm/immap_86xx.h>
26 #include <asm/pci-bridge.h>
27 #include <sysdev/fsl_soc.h>
34 #define DBG(fmt, args...) printk(KERN_ERR "%s: " fmt, __FUNCTION__, ## args)
36 #define DBG(fmt, args...)
39 struct pcie_outbound_window_regs
{
40 uint pexotar
; /* 0x.0 - PCI Express outbound translation address register */
41 uint pexotear
; /* 0x.4 - PCI Express outbound translation extended address register */
42 uint pexowbar
; /* 0x.8 - PCI Express outbound window base address register */
44 uint pexowar
; /* 0x.10 - PCI Express outbound window attributes register */
48 struct pcie_inbound_window_regs
{
49 uint pexitar
; /* 0x.0 - PCI Express inbound translation address register */
51 uint pexiwbar
; /* 0x.8 - PCI Express inbound window base address register */
52 uint pexiwbear
; /* 0x.c - PCI Express inbound window base extended address register */
53 uint pexiwar
; /* 0x.10 - PCI Express inbound window attributes register */
57 static void __init
setup_pcie_atmu(struct pci_controller
*hose
, struct resource
*rsrc
)
59 volatile struct ccsr_pex
*pcie
;
60 volatile struct pcie_outbound_window_regs
*pcieow
;
61 volatile struct pcie_inbound_window_regs
*pcieiw
;
64 DBG("PCIE memory map start 0x%x, size 0x%x\n", rsrc
->start
,
65 rsrc
->end
- rsrc
->start
+ 1);
66 pcie
= ioremap(rsrc
->start
, rsrc
->end
- rsrc
->start
+ 1);
68 /* Disable all windows (except pexowar0 since its ignored) */
77 pcieow
= (struct pcie_outbound_window_regs
*)&pcie
->pexotar1
;
78 pcieiw
= (struct pcie_inbound_window_regs
*)&pcie
->pexitar1
;
80 /* Setup outbound MEM window */
81 for(i
= 0; i
< 3; i
++)
82 if (hose
->mem_resources
[i
].flags
& IORESOURCE_MEM
){
83 DBG("PCIE MEM resource start 0x%08x, size 0x%08x.\n",
84 hose
->mem_resources
[i
].start
,
85 hose
->mem_resources
[i
].end
86 - hose
->mem_resources
[i
].start
+ 1);
87 pcieow
->pexotar
= (hose
->mem_resources
[i
].start
) >> 12
90 pcieow
->pexowbar
= (hose
->mem_resources
[i
].start
) >> 12
93 pcieow
->pexowar
= 0x80044000 |
94 (__ilog2(hose
->mem_resources
[i
].end
95 - hose
->mem_resources
[i
].start
+ 1)
100 /* Setup outbound IO window */
101 if (hose
->io_resource
.flags
& IORESOURCE_IO
){
102 DBG("PCIE IO resource start 0x%08x, size 0x%08x, phy base 0x%08x.\n",
103 hose
->io_resource
.start
,
104 hose
->io_resource
.end
- hose
->io_resource
.start
+ 1,
106 pcieow
->pexotar
= (hose
->io_resource
.start
) >> 12 & 0x000fffff;
107 pcieow
->pexotear
= 0;
108 pcieow
->pexowbar
= (hose
->io_base_phys
) >> 12 & 0x000fffff;
110 pcieow
->pexowar
= 0x80088000 | (__ilog2(hose
->io_resource
.end
111 - hose
->io_resource
.start
+ 1) - 1);
114 /* Setup 2G inbound Memory Window @ 0 */
115 pcieiw
->pexitar
= 0x00000000;
116 pcieiw
->pexiwbar
= 0x00000000;
117 /* Enable, Prefetch, Local Mem, Snoop R/W, 2G */
118 pcieiw
->pexiwar
= 0xa0f5501e;
122 mpc86xx_setup_pcie(struct pci_controller
*hose
, u32 pcie_offset
, u32 pcie_size
)
124 volatile struct ccsr_pex
*pcie
;
128 DBG("PCIE host controller register offset 0x%08x, size 0x%08x.\n",
129 pcie_offset
, pcie_size
);
131 pcie
= ioremap(pcie_offset
, pcie_size
);
133 early_read_config_word(hose
, 0, 0, PCI_COMMAND
, &cmd
);
134 cmd
|= PCI_COMMAND_SERR
| PCI_COMMAND_MASTER
| PCI_COMMAND_MEMORY
136 early_write_config_word(hose
, 0, 0, PCI_COMMAND
, cmd
);
138 early_write_config_byte(hose
, 0, 0, PCI_LATENCY_TIMER
, 0x80);
140 /* PCIE Bus, Fix the MPC8641D host bridge's location to bus 0xFF. */
141 early_read_config_dword(hose
, 0, 0, PCI_PRIMARY_BUS
, &temps
);
142 temps
= (temps
& 0xff000000) | (0xff) | (0x0 << 8) | (0xfe << 16);
143 early_write_config_dword(hose
, 0, 0, PCI_PRIMARY_BUS
, temps
);
146 int __init
add_bridge(struct device_node
*dev
)
149 struct pci_controller
*hose
;
150 struct resource rsrc
;
155 DBG("Adding PCIE host bridge %s\n", dev
->full_name
);
157 /* Fetch host bridge registers address */
158 has_address
= (of_address_to_resource(dev
, 0, &rsrc
) == 0);
160 /* Get bus range if any */
161 bus_range
= (int *) get_property(dev
, "bus-range", &len
);
162 if (bus_range
== NULL
|| len
< 2 * sizeof(int))
163 printk(KERN_WARNING
"Can't get bus-range for %s, assume"
164 " bus 0\n", dev
->full_name
);
166 hose
= pcibios_alloc_controller();
169 hose
->arch_data
= dev
;
170 hose
->set_cfg_type
= 1;
172 /* last_busno = 0xfe cause by MPC8641 PCIE bug */
173 hose
->first_busno
= bus_range
? bus_range
[0] : 0x0;
174 hose
->last_busno
= bus_range
? bus_range
[1] : 0xfe;
176 setup_indirect_pcie(hose
, rsrc
.start
, rsrc
.start
+ 0x4);
178 /* Setup the PCIE host controller. */
179 mpc86xx_setup_pcie(hose
, rsrc
.start
, rsrc
.end
- rsrc
.start
+ 1);
181 if ((rsrc
.start
& 0xfffff) == 0x8000)
184 printk(KERN_INFO
"Found MPC86xx PCIE host bridge at 0x%08lx. "
185 "Firmware bus number: %d->%d\n",
186 rsrc
.start
, hose
->first_busno
, hose
->last_busno
);
188 DBG(" ->Hose at 0x%p, cfg_addr=0x%p,cfg_data=0x%p\n",
189 hose
, hose
->cfg_addr
, hose
->cfg_data
);
191 /* Interpret the "ranges" property */
192 /* This also maps the I/O region and sets isa_io/mem_base */
193 pci_process_bridge_OF_ranges(hose
, dev
, primary
);
195 /* Setup PEX window registers */
196 setup_pcie_atmu(hose
, &rsrc
);
201 static void __devinit
quirk_ali1575(struct pci_dev
*dev
)
206 * ALI1575 interrupts route table setup:
218 * interrupts for PCI slot0 -- PIRQA / PIRQB / PIRQC / PIRQD
219 * PCI slot1 -- PIRQB / PIRQC / PIRQD / PIRQA
221 pci_write_config_dword(dev
, 0x48, 0xb9317542);
223 /* USB 1.1 OHCI controller 1, interrupt: PIRQE */
224 pci_write_config_byte(dev
, 0x86, 0x0c);
226 /* USB 1.1 OHCI controller 2, interrupt: PIRQF */
227 pci_write_config_byte(dev
, 0x87, 0x0d);
229 /* USB 1.1 OHCI controller 3, interrupt: PIRQH */
230 pci_write_config_byte(dev
, 0x88, 0x0f);
232 /* USB 2.0 controller, interrupt: PIRQ7 */
233 pci_write_config_byte(dev
, 0x74, 0x06);
235 /* Audio controller, interrupt: PIRQE */
236 pci_write_config_byte(dev
, 0x8a, 0x0c);
238 /* Modem controller, interrupt: PIRQF */
239 pci_write_config_byte(dev
, 0x8b, 0x0d);
241 /* HD audio controller, interrupt: PIRQG */
242 pci_write_config_byte(dev
, 0x8c, 0x0e);
244 /* Serial ATA interrupt: PIRQD */
245 pci_write_config_byte(dev
, 0x8d, 0x0b);
247 /* SMB interrupt: PIRQH */
248 pci_write_config_byte(dev
, 0x8e, 0x0f);
250 /* PMU ACPI SCI interrupt: PIRQH */
251 pci_write_config_byte(dev
, 0x8f, 0x0f);
253 /* Primary PATA IDE IRQ: 14
254 * Secondary PATA IDE IRQ: 15
256 pci_write_config_byte(dev
, 0x44, 0x3d);
257 pci_write_config_byte(dev
, 0x75, 0x0f);
259 /* Set IRQ14 and IRQ15 to legacy IRQs */
260 pci_read_config_word(dev
, 0x46, &temp
);
262 pci_write_config_word(dev
, 0x46, temp
);
264 /* Set i8259 interrupt trigger
281 static void __devinit
quirk_uli5288(struct pci_dev
*dev
)
285 pci_read_config_byte(dev
,0x83,&c
);
287 pci_write_config_byte(dev
, 0x83, c
);
289 pci_write_config_byte(dev
, 0x09, 0x01);
290 pci_write_config_byte(dev
, 0x0a, 0x06);
292 pci_read_config_byte(dev
,0x83,&c
);
294 pci_write_config_byte(dev
, 0x83, c
);
296 pci_read_config_byte(dev
,0x84,&c
);
298 pci_write_config_byte(dev
, 0x84, c
);
301 static void __devinit
quirk_uli5229(struct pci_dev
*dev
)
304 pci_write_config_word(dev
, 0x04, 0x0405);
305 pci_read_config_word(dev
, 0x4a, &temp
);
307 pci_write_config_word(dev
, 0x4a, temp
);
310 static void __devinit
early_uli5249(struct pci_dev
*dev
)
313 pci_write_config_word(dev
, 0x04, 0x0007);
314 pci_read_config_byte(dev
, 0x7c, &temp
);
315 pci_write_config_byte(dev
, 0x7c, 0x80);
316 pci_write_config_byte(dev
, 0x09, 0x01);
317 pci_write_config_byte(dev
, 0x7c, temp
);
321 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AL
, 0x1575, quirk_ali1575
);
322 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AL
, 0x5288, quirk_uli5288
);
323 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AL
, 0x5229, quirk_uli5229
);
324 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_AL
, 0x5249, early_uli5249
);