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authorRoy Zang <tie-fei.zang@freescale.com>2007-07-10 06:44:34 -0400
committerKumar Gala <galak@kernel.crashing.org>2007-07-23 11:27:07 -0400
commit55c44991e2910519bab274c857d95a08100ff5f7 (patch)
tree6da0c59c1c45181d8321c7498f63ccb6ef32b1c6 /arch/powerpc/platforms/86xx/pci.c
parentf695baf2df9e0413d3521661070103711545207a (diff)
[POWERPC] Create common fsl pci/e files based on 86xx platforms
Move arch/powerpc/platforms/86xx/pci.c -> arch/powerpc/sysdev/fsl_pci.c arch/powerpc/sysdev/fsl_pcie.h -> arch/powerpc/sysdev/fsl_pci.h as the base to unify 83xx/85xx/86xx pci and pcie. Add CONFIG_FSL_PCI to build fsl_pci.c for Freescale pci and pcie option. The code still works for 86xx platforms. Signed-off-by: Roy Zang <tie-fei.zang@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/platforms/86xx/pci.c')
-rw-r--r--arch/powerpc/platforms/86xx/pci.c238
1 files changed, 0 insertions, 238 deletions
diff --git a/arch/powerpc/platforms/86xx/pci.c b/arch/powerpc/platforms/86xx/pci.c
deleted file mode 100644
index 73cd5b05a84e..000000000000
--- a/arch/powerpc/platforms/86xx/pci.c
+++ /dev/null
@@ -1,238 +0,0 @@
1/*
2 * MPC86XX pci setup code
3 *
4 * Recode: ZHANG WEI <wei.zhang@freescale.com>
5 * Initial author: Xianghua Xiao <x.xiao@freescale.com>
6 *
7 * Copyright 2006 Freescale Semiconductor Inc.
8 *
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.
13 */
14
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>
20
21#include <asm/system.h>
22#include <asm/atomic.h>
23#include <asm/io.h>
24#include <asm/prom.h>
25#include <asm/pci-bridge.h>
26#include <sysdev/fsl_soc.h>
27#include <sysdev/fsl_pcie.h>
28
29#include "mpc86xx.h"
30
31#undef DEBUG
32
33#ifdef DEBUG
34#define DBG(fmt, args...) printk(KERN_ERR "%s: " fmt, __FUNCTION__, ## args)
35#else
36#define DBG(fmt, args...)
37#endif
38
39struct 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 */
43 char res1[4];
44 uint pexowar; /* 0x.10 - PCI Express outbound window attributes register */
45 char res2[12];
46};
47
48struct pcie_inbound_window_regs {
49 uint pexitar; /* 0x.0 - PCI Express inbound translation address register */
50 char res1[4];
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 */
54 char res2[12];
55};
56
57static void __init setup_pcie_atmu(struct pci_controller *hose, struct resource *rsrc)
58{
59 volatile struct ccsr_pex *pcie;
60 volatile struct pcie_outbound_window_regs *pcieow;
61 volatile struct pcie_inbound_window_regs *pcieiw;
62 int i = 0;
63
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);
67
68 /* Disable all windows (except pexowar0 since its ignored) */
69 pcie->pexowar1 = 0;
70 pcie->pexowar2 = 0;
71 pcie->pexowar3 = 0;
72 pcie->pexowar4 = 0;
73 pcie->pexiwar1 = 0;
74 pcie->pexiwar2 = 0;
75 pcie->pexiwar3 = 0;
76
77 pcieow = (struct pcie_outbound_window_regs *)&pcie->pexotar1;
78 pcieiw = (struct pcie_inbound_window_regs *)&pcie->pexitar1;
79
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
88 & 0x000fffff;
89 pcieow->pexotear = 0;
90 pcieow->pexowbar = (hose->mem_resources[i].start) >> 12
91 & 0x000fffff;
92 /* Enable, Mem R/W */
93 pcieow->pexowar = 0x80044000 |
94 (__ilog2(hose->mem_resources[i].end
95 - hose->mem_resources[i].start + 1)
96 - 1);
97 pcieow++;
98 }
99
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,
105 hose->io_base_phys);
106 pcieow->pexotar = (hose->io_resource.start) >> 12 & 0x000fffff;
107 pcieow->pexotear = 0;
108 pcieow->pexowbar = (hose->io_base_phys) >> 12 & 0x000fffff;
109 /* Enable, IO R/W */
110 pcieow->pexowar = 0x80088000 | (__ilog2(hose->io_resource.end
111 - hose->io_resource.start + 1) - 1);
112 }
113
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;
119}
120
121static void __init
122mpc86xx_setup_pcie(struct pci_controller *hose, u32 pcie_offset, u32 pcie_size)
123{
124 u16 cmd;
125
126 DBG("PCIE host controller register offset 0x%08x, size 0x%08x.\n",
127 pcie_offset, pcie_size);
128
129 early_read_config_word(hose, 0, 0, PCI_COMMAND, &cmd);
130 cmd |= PCI_COMMAND_SERR | PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY
131 | PCI_COMMAND_IO;
132 early_write_config_word(hose, 0, 0, PCI_COMMAND, cmd);
133
134 early_write_config_byte(hose, 0, 0, PCI_LATENCY_TIMER, 0x80);
135}
136
137static void __devinit quirk_fsl_pcie_transparent(struct pci_dev *dev)
138{
139 struct resource *res;
140 int i, res_idx = PCI_BRIDGE_RESOURCES;
141 struct pci_controller *hose;
142
143 /*
144 * Make the bridge be transparent.
145 */
146 dev->transparent = 1;
147
148 hose = pci_bus_to_host(dev->bus);
149 if (!hose) {
150 printk(KERN_ERR "Can't find hose for bus %d\n",
151 dev->bus->number);
152 return;
153 }
154
155 if (hose->io_resource.flags) {
156 res = &dev->resource[res_idx++];
157 res->start = hose->io_resource.start;
158 res->end = hose->io_resource.end;
159 res->flags = hose->io_resource.flags;
160 }
161
162 for (i = 0; i < 3; i++) {
163 res = &dev->resource[res_idx + i];
164 res->start = hose->mem_resources[i].start;
165 res->end = hose->mem_resources[i].end;
166 res->flags = hose->mem_resources[i].flags;
167 }
168}
169
170
171DECLARE_PCI_FIXUP_EARLY(0x1957, 0x7010, quirk_fsl_pcie_transparent);
172DECLARE_PCI_FIXUP_EARLY(0x1957, 0x7011, quirk_fsl_pcie_transparent);
173
174#define PCIE_LTSSM 0x404 /* PCIe Link Training and Status */
175#define PCIE_LTSSM_L0 0x16 /* L0 state */
176
177int __init mpc86xx_add_bridge(struct device_node *dev)
178{
179 int len;
180 struct pci_controller *hose;
181 struct resource rsrc;
182 const int *bus_range;
183 int has_address = 0;
184 int primary = 0;
185 u16 val;
186
187 DBG("Adding PCIE host bridge %s\n", dev->full_name);
188
189 /* Fetch host bridge registers address */
190 has_address = (of_address_to_resource(dev, 0, &rsrc) == 0);
191
192 /* Get bus range if any */
193 bus_range = of_get_property(dev, "bus-range", &len);
194 if (bus_range == NULL || len < 2 * sizeof(int))
195 printk(KERN_WARNING "Can't get bus-range for %s, assume"
196 " bus 0\n", dev->full_name);
197
198 pci_assign_all_buses = 1;
199 hose = pcibios_alloc_controller(dev);
200 if (!hose)
201 return -ENOMEM;
202
203 hose->indirect_type = PPC_INDIRECT_TYPE_EXT_REG |
204 PPC_INDIRECT_TYPE_SURPRESS_PRIMARY_BUS;
205
206 hose->first_busno = bus_range ? bus_range[0] : 0x0;
207 hose->last_busno = bus_range ? bus_range[1] : 0xff;
208
209 setup_indirect_pci(hose, rsrc.start, rsrc.start + 0x4);
210
211 /* Probe the hose link training status */
212 early_read_config_word(hose, 0, 0, PCIE_LTSSM, &val);
213 if (val < PCIE_LTSSM_L0)
214 return -ENXIO;
215
216 /* Setup the PCIE host controller. */
217 mpc86xx_setup_pcie(hose, rsrc.start, rsrc.end - rsrc.start + 1);
218
219 if ((rsrc.start & 0xfffff) == 0x8000)
220 primary = 1;
221
222 printk(KERN_INFO "Found MPC86xx PCIE host bridge at 0x%08lx. "
223 "Firmware bus number: %d->%d\n",
224 (unsigned long) rsrc.start,
225 hose->first_busno, hose->last_busno);
226
227 DBG(" ->Hose at 0x%p, cfg_addr=0x%p,cfg_data=0x%p\n",
228 hose, hose->cfg_addr, hose->cfg_data);
229
230 /* Interpret the "ranges" property */
231 /* This also maps the I/O region and sets isa_io/mem_base */
232 pci_process_bridge_OF_ranges(hose, dev, primary);
233
234 /* Setup PEX window registers */
235 setup_pcie_atmu(hose, &rsrc);
236
237 return 0;
238}
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-21 11:13:34 -0500