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-rw-r--r--arch/mips/pci/ops-tx4938.c214
1 files changed, 0 insertions, 214 deletions
diff --git a/arch/mips/pci/ops-tx4938.c b/arch/mips/pci/ops-tx4938.c
deleted file mode 100644
index a450c4062031..000000000000
--- a/arch/mips/pci/ops-tx4938.c
+++ /dev/null
@@ -1,214 +0,0 @@
1/*
2 * Define the pci_ops for the Toshiba rbtx4938
3 * Copyright (C) 2000-2001 Toshiba Corporation
4 *
5 * 2003-2005 (c) MontaVista Software, Inc. This file is licensed under the
6 * terms of the GNU General Public License version 2. This program is
7 * licensed "as is" without any warranty of any kind, whether express
8 * or implied.
9 *
10 * Support for TX4938 in 2.6 - Manish Lachwani (mlachwani@mvista.com)
11 */
12#include <linux/types.h>
13#include <linux/pci.h>
14#include <linux/kernel.h>
15#include <linux/init.h>
16
17#include <asm/addrspace.h>
18#include <asm/tx4938/rbtx4938.h>
19
20/* initialize in setup */
21struct resource pci_io_resource = {
22 .name = "pci IO space",
23 .start = 0,
24 .end = 0,
25 .flags = IORESOURCE_IO
26};
27
28/* initialize in setup */
29struct resource pci_mem_resource = {
30 .name = "pci memory space",
31 .start = 0,
32 .end = 0,
33 .flags = IORESOURCE_MEM
34};
35
36struct resource tx4938_pcic1_pci_io_resource = {
37 .name = "PCI1 IO",
38 .start = 0,
39 .end = 0,
40 .flags = IORESOURCE_IO
41};
42struct resource tx4938_pcic1_pci_mem_resource = {
43 .name = "PCI1 mem",
44 .start = 0,
45 .end = 0,
46 .flags = IORESOURCE_MEM
47};
48
49static int mkaddr(int bus, int dev_fn, int where,
50 struct tx4938_pcic_reg *pcicptr)
51{
52 if (bus > 0) {
53 /* Type 1 configuration */
54 pcicptr->g2pcfgadrs = ((bus & 0xff) << 0x10) |
55 ((dev_fn & 0xff) << 0x08) | (where & 0xfc) | 1;
56 } else {
57 if (dev_fn >= PCI_DEVFN(TX4938_PCIC_MAX_DEVNU, 0))
58 return -1;
59
60 /* Type 0 configuration */
61 pcicptr->g2pcfgadrs = ((bus & 0xff) << 0x10) |
62 ((dev_fn & 0xff) << 0x08) | (where & 0xfc);
63 }
64 /* clear M_ABORT and Disable M_ABORT Int. */
65 pcicptr->pcistatus =
66 (pcicptr->pcistatus & 0x0000ffff) |
67 (PCI_STATUS_REC_MASTER_ABORT << 16);
68 pcicptr->pcimask &= ~PCI_STATUS_REC_MASTER_ABORT;
69
70 return 0;
71}
72
73static int check_abort(struct tx4938_pcic_reg *pcicptr)
74{
75 int code = PCIBIOS_SUCCESSFUL;
76 /* wait write cycle completion before checking error status */
77 while (pcicptr->pcicstatus & TX4938_PCIC_PCICSTATUS_IWB)
78 ;
79 if (pcicptr->pcistatus & (PCI_STATUS_REC_MASTER_ABORT << 16)) {
80 pcicptr->pcistatus =
81 (pcicptr->
82 pcistatus & 0x0000ffff) | (PCI_STATUS_REC_MASTER_ABORT
83 << 16);
84 pcicptr->pcimask |= PCI_STATUS_REC_MASTER_ABORT;
85 code = PCIBIOS_DEVICE_NOT_FOUND;
86 }
87 return code;
88}
89
90extern struct pci_controller tx4938_pci_controller[];
91extern struct tx4938_pcic_reg *get_tx4938_pcicptr(int ch);
92
93static struct tx4938_pcic_reg *pci_bus_to_pcicptr(struct pci_bus *bus)
94{
95 struct pci_controller *channel = bus->sysdata;
96 return get_tx4938_pcicptr(channel - &tx4938_pci_controller[0]);
97}
98
99static int tx4938_pcibios_read_config(struct pci_bus *bus, unsigned int devfn,
100 int where, int size, u32 * val)
101{
102 int retval, dev, busno, func;
103 struct tx4938_pcic_reg *pcicptr = pci_bus_to_pcicptr(bus);
104 void __iomem *cfgdata =
105 (void __iomem *)(unsigned long)&pcicptr->g2pcfgdata;
106
107 dev = PCI_SLOT(devfn);
108 func = PCI_FUNC(devfn);
109
110 /* check if the bus is top-level */
111 if (bus->parent != NULL)
112 busno = bus->number;
113 else {
114 busno = 0;
115 }
116
117 if (mkaddr(busno, devfn, where, pcicptr))
118 return -1;
119
120 switch (size) {
121 case 1:
122#ifdef __BIG_ENDIAN
123 cfgdata += (where & 3) ^ 3;
124#else
125 cfgdata += where & 3;
126#endif
127 *val = __raw_readb(cfgdata);
128 break;
129 case 2:
130#ifdef __BIG_ENDIAN
131 cfgdata += (where & 2) ^ 2;
132#else
133 cfgdata += where & 2;
134#endif
135 *val = __raw_readw(cfgdata);
136 break;
137 case 4:
138 *val = __raw_readl(cfgdata);
139 break;
140 }
141
142 retval = check_abort(pcicptr);
143 if (retval == PCIBIOS_DEVICE_NOT_FOUND)
144 *val = 0xffffffff;
145
146 return retval;
147}
148
149static int tx4938_pcibios_write_config(struct pci_bus *bus, unsigned int devfn, int where,
150 int size, u32 val)
151{
152 int dev, busno, func;
153 struct tx4938_pcic_reg *pcicptr = pci_bus_to_pcicptr(bus);
154 void __iomem *cfgdata =
155 (void __iomem *)(unsigned long)&pcicptr->g2pcfgdata;
156
157 busno = bus->number;
158 dev = PCI_SLOT(devfn);
159 func = PCI_FUNC(devfn);
160
161 /* check if the bus is top-level */
162 if (bus->parent != NULL) {
163 busno = bus->number;
164 } else {
165 busno = 0;
166 }
167
168 if (mkaddr(busno, devfn, where, pcicptr))
169 return -1;
170
171 switch (size) {
172 case 1:
173#ifdef __BIG_ENDIAN
174 cfgdata += (where & 3) ^ 3;
175#else
176 cfgdata += where & 3;
177#endif
178 __raw_writeb(val, cfgdata);
179 break;
180 case 2:
181#ifdef __BIG_ENDIAN
182 cfgdata += (where & 2) ^ 2;
183#else
184 cfgdata += where & 2;
185#endif
186 __raw_writew(val, cfgdata);
187 break;
188 case 4:
189 __raw_writel(val, cfgdata);
190 break;
191 }
192
193 return check_abort(pcicptr);
194}
195
196struct pci_ops tx4938_pci_ops = {
197 tx4938_pcibios_read_config,
198 tx4938_pcibios_write_config
199};
200
201struct pci_controller tx4938_pci_controller[] = {
202 /* h/w only supports devices 0x00 to 0x14 */
203 {
204 .pci_ops = &tx4938_pci_ops,
205 .io_resource = &pci_io_resource,
206 .mem_resource = &pci_mem_resource,
207 },
208 /* h/w only supports devices 0x00 to 0x14 */
209 {
210 .pci_ops = &tx4938_pci_ops,
211 .io_resource = &tx4938_pcic1_pci_io_resource,
212 .mem_resource = &tx4938_pcic1_pci_mem_resource,
213 }
214};
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