![[BACK]](/cvsweb/icons/back.gif){kind=icon}
Return to rtas_pci.c CVS log ![[TXT]](/cvsweb/icons/text.gif){kind=icon}
![[DIR]](/cvsweb/icons/dir.gif){kind=icon}
Up to [Qemu by Fabrice Bellard] / qemu / roms / SLOF / board-js2x / rtas|
Return to rtas_pci.c CVS log | Up to [Qemu by Fabrice Bellard] / qemu / roms / SLOF / board-js2x / rtas |
1.1 root 1: /******************************************************************************
2: * Copyright (c) 2004, 2008 IBM Corporation
3: * All rights reserved.
4: * This program and the accompanying materials
5: * are made available under the terms of the BSD License
6: * which accompanies this distribution, and is available at
7: * http://www.opensource.org/licenses/bsd-license.php
8: *
9: * Contributors:
10: * IBM Corporation - initial implementation
11: *****************************************************************************/
12: #include <stdint.h>
13: #include <rtas.h>
14: #include <hw.h>
15:
16: int
17: rtas_ibm_read_pci_config (rtas_args_t *rtas_args) {
18: int retVal = 0;
19: uint64_t addr = ((uint64_t) rtas_args->args[1]) << 32; // high 32 bits of PHB UID
20: addr |= (rtas_args->args[2] & 0xFFFFFFFF); // low 32 bits of PHB UID
21: addr |= (rtas_args->args[0] & 0x00FFFFFF); // bus, devfn, offset
22: unsigned int size = rtas_args->args[3];
23:
24: /* Check for bus != 0 on PCI/PCI-X (PHB UID = 0xf2000000) */
25: if (((addr & 0xf2000000) == 0xf2000000) && (addr & 0xff0000))
26: addr += 0x1000000;
27:
28: if (size == 1)
29: rtas_args->args[5] = load8_ci(addr);
30: else if (size == 2)
31: rtas_args->args[5] = bswap16_load(addr);
32: else if (size == 4)
33: rtas_args->args[5] = bswap32_load(addr);
34: else
35: retVal = -3; /* Bad arguments */
36:
37: return retVal;
38: }
39:
40: int
41: rtas_ibm_write_pci_config (rtas_args_t *rtas_args) {
42: int retVal = 0;
43: uint64_t addr = ((uint64_t) rtas_args->args[1]) << 32; // high 32 bits of PHB UID
44: addr |= (rtas_args->args[2] & 0xFFFFFFFF); // low 32 bits of PHB UID
45: addr |= (rtas_args->args[0] & 0x00FFFFFF); // bus, devfn, offset
46: unsigned int size = rtas_args->args[3];
47:
48: addr |= 0xf2000000;
49:
50: /* Check for bus != 0 on PCI/PCI-X (PHB UID = 0xf2000000) */
51: if (((addr & 0xf2000000) == 0xf2000000) && (addr & 0xff0000))
52: addr += 0x1000000;
53:
54: if (size == 1)
55: store8_ci(addr, rtas_args->args[4]);
56: else if (size == 2)
57: bswap16_store(addr, rtas_args->args[4]);
58: else if (size == 4)
59: bswap32_store(addr, rtas_args->args[4]);
60: else
61: retVal = -3; /* Bad arguments */
62:
63: return retVal;
64: }
65:
66: int
67: rtas_read_pci_config (rtas_args_t *rtas_args) {
68: int retVal = 0;
69: unsigned long addr = rtas_args->args[0];
70: unsigned int size = rtas_args->args[1];
71: addr |= 0xf2000000;
72:
73: /* Check for bus != 0 */
74: if (addr & 0xff0000)
75: addr += 0x1000000;
76:
77: if (size == 1)
78: rtas_args->args[3] = load8_ci(addr);
79: else if (size == 2)
80: rtas_args->args[3] = bswap16_load(addr);
81: else if (size == 4)
82: rtas_args->args[3] = bswap32_load(addr);
83: else
84: retVal = -3; /* Bad arguments */
85:
86: return retVal;
87: }
88:
89: int
90: rtas_write_pci_config (rtas_args_t *rtas_args) {
91: int retVal = 0;
92: unsigned long addr = rtas_args->args[0];
93: unsigned int size = rtas_args->args[1];
94:
95: addr |= 0xf2000000;
96:
97: /* Check for bus != 0 */
98: if (addr & 0xff0000)
99: addr += 0x1000000;
100:
101: if (size == 1)
102: store8_ci(addr, rtas_args->args[2]);
103: else if (size == 2)
104: bswap16_store(addr, rtas_args->args[2]);
105: else if (size == 4)
106: bswap32_store(addr, rtas_args->args[2]);
107: else
108: retVal = -3; /* Bad arguments */
109:
110: return retVal;
111: }
This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.