diff options
Diffstat (limited to 'arch/mips/pci/ops-nile4.c')
-rw-r--r-- | arch/mips/pci/ops-nile4.c | 147 |
1 files changed, 0 insertions, 147 deletions
diff --git a/arch/mips/pci/ops-nile4.c b/arch/mips/pci/ops-nile4.c deleted file mode 100644 index a8d38dc8c504..000000000000 --- a/arch/mips/pci/ops-nile4.c +++ /dev/null | |||
@@ -1,147 +0,0 @@ | |||
1 | #include <linux/kernel.h> | ||
2 | #include <linux/init.h> | ||
3 | #include <linux/pci.h> | ||
4 | #include <asm/bootinfo.h> | ||
5 | |||
6 | #include <asm/lasat/lasat.h> | ||
7 | #include <asm/gt64120.h> | ||
8 | #include <asm/nile4.h> | ||
9 | |||
10 | #define PCI_ACCESS_READ 0 | ||
11 | #define PCI_ACCESS_WRITE 1 | ||
12 | |||
13 | #define LO(reg) (reg / 4) | ||
14 | #define HI(reg) (reg / 4 + 1) | ||
15 | |||
16 | volatile unsigned long *const vrc_pciregs = (void *) Vrc5074_BASE; | ||
17 | |||
18 | static DEFINE_SPINLOCK(nile4_pci_lock); | ||
19 | |||
20 | static int nile4_pcibios_config_access(unsigned char access_type, | ||
21 | struct pci_bus *bus, unsigned int devfn, int where, u32 * val) | ||
22 | { | ||
23 | unsigned char busnum = bus->number; | ||
24 | u32 adr, mask, err; | ||
25 | |||
26 | if ((busnum == 0) && (PCI_SLOT(devfn) > 8)) | ||
27 | /* The addressing scheme chosen leaves room for just | ||
28 | * 8 devices on the first busnum (besides the PCI | ||
29 | * controller itself) */ | ||
30 | return PCIBIOS_DEVICE_NOT_FOUND; | ||
31 | |||
32 | if ((busnum == 0) && (devfn == PCI_DEVFN(0, 0))) { | ||
33 | /* Access controller registers directly */ | ||
34 | if (access_type == PCI_ACCESS_WRITE) { | ||
35 | vrc_pciregs[(0x200 + where) >> 2] = *val; | ||
36 | } else { | ||
37 | *val = vrc_pciregs[(0x200 + where) >> 2]; | ||
38 | } | ||
39 | return PCIBIOS_SUCCESSFUL; | ||
40 | } | ||
41 | |||
42 | /* Temporarily map PCI Window 1 to config space */ | ||
43 | mask = vrc_pciregs[LO(NILE4_PCIINIT1)]; | ||
44 | vrc_pciregs[LO(NILE4_PCIINIT1)] = 0x0000001a | (busnum ? 0x200 : 0); | ||
45 | |||
46 | /* Clear PCI Error register. This also clears the Error Type | ||
47 | * bits in the Control register */ | ||
48 | vrc_pciregs[LO(NILE4_PCIERR)] = 0; | ||
49 | vrc_pciregs[HI(NILE4_PCIERR)] = 0; | ||
50 | |||
51 | /* Setup address */ | ||
52 | if (busnum == 0) | ||
53 | adr = | ||
54 | KSEG1ADDR(PCI_WINDOW1) + | ||
55 | ((1 << (PCI_SLOT(devfn) + 15)) | (PCI_FUNC(devfn) << 8) | ||
56 | | (where & ~3)); | ||
57 | else | ||
58 | adr = KSEG1ADDR(PCI_WINDOW1) | (busnum << 16) | (devfn << 8) | | ||
59 | (where & ~3); | ||
60 | |||
61 | if (access_type == PCI_ACCESS_WRITE) | ||
62 | *(u32 *) adr = *val; | ||
63 | else | ||
64 | *val = *(u32 *) adr; | ||
65 | |||
66 | /* Check for master or target abort */ | ||
67 | err = (vrc_pciregs[HI(NILE4_PCICTRL)] >> 5) & 0x7; | ||
68 | |||
69 | /* Restore PCI Window 1 */ | ||
70 | vrc_pciregs[LO(NILE4_PCIINIT1)] = mask; | ||
71 | |||
72 | if (err) | ||
73 | return PCIBIOS_DEVICE_NOT_FOUND; | ||
74 | |||
75 | return PCIBIOS_SUCCESSFUL; | ||
76 | } | ||
77 | |||
78 | static int nile4_pcibios_read(struct pci_bus *bus, unsigned int devfn, | ||
79 | int where, int size, u32 * val) | ||
80 | { | ||
81 | unsigned long flags; | ||
82 | u32 data = 0; | ||
83 | int err; | ||
84 | |||
85 | if ((size == 2) && (where & 1)) | ||
86 | return PCIBIOS_BAD_REGISTER_NUMBER; | ||
87 | else if ((size == 4) && (where & 3)) | ||
88 | return PCIBIOS_BAD_REGISTER_NUMBER; | ||
89 | |||
90 | spin_lock_irqsave(&nile4_pci_lock, flags); | ||
91 | err = nile4_pcibios_config_access(PCI_ACCESS_READ, bus, devfn, where, | ||
92 | &data); | ||
93 | spin_unlock_irqrestore(&nile4_pci_lock, flags); | ||
94 | |||
95 | if (err) | ||
96 | return err; | ||
97 | |||
98 | if (size == 1) | ||
99 | *val = (data >> ((where & 3) << 3)) & 0xff; | ||
100 | else if (size == 2) | ||
101 | *val = (data >> ((where & 3) << 3)) & 0xffff; | ||
102 | else | ||
103 | *val = data; | ||
104 | |||
105 | return PCIBIOS_SUCCESSFUL; | ||
106 | } | ||
107 | |||
108 | static int nile4_pcibios_write(struct pci_bus *bus, unsigned int devfn, | ||
109 | int where, int size, u32 val) | ||
110 | { | ||
111 | unsigned long flags; | ||
112 | u32 data = 0; | ||
113 | int err; | ||
114 | |||
115 | if ((size == 2) && (where & 1)) | ||
116 | return PCIBIOS_BAD_REGISTER_NUMBER; | ||
117 | else if ((size == 4) && (where & 3)) | ||
118 | return PCIBIOS_BAD_REGISTER_NUMBER; | ||
119 | |||
120 | spin_lock_irqsave(&nile4_pci_lock, flags); | ||
121 | err = nile4_pcibios_config_access(PCI_ACCESS_READ, bus, devfn, where, | ||
122 | &data); | ||
123 | spin_unlock_irqrestore(&nile4_pci_lock, flags); | ||
124 | |||
125 | if (err) | ||
126 | return err; | ||
127 | |||
128 | if (size == 1) | ||
129 | data = (data & ~(0xff << ((where & 3) << 3))) | | ||
130 | (val << ((where & 3) << 3)); | ||
131 | else if (size == 2) | ||
132 | data = (data & ~(0xffff << ((where & 3) << 3))) | | ||
133 | (val << ((where & 3) << 3)); | ||
134 | else | ||
135 | data = val; | ||
136 | |||
137 | if (nile4_pcibios_config_access | ||
138 | (PCI_ACCESS_WRITE, bus, devfn, where, &data)) | ||
139 | return -1; | ||
140 | |||
141 | return PCIBIOS_SUCCESSFUL; | ||
142 | } | ||
143 | |||
144 | struct pci_ops nile4_pci_ops = { | ||
145 | .read = nile4_pcibios_read, | ||
146 | .write = nile4_pcibios_write, | ||
147 | }; | ||