projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 4c75a6f4 BH |
1 | /* |
| 2 | * (c) Copyright 2006 Benjamin Herrenschmidt, IBM Corp. | |
| 3 | * <benh@kernel.crashing.org> | |
| 4 | * | |
| 5 | * This program is free software; you can redistribute it and/or modify | |
| 6 | * it under the terms of the GNU General Public License as published by | |
| 7 | * the Free Software Foundation; either version 2 of the License, or | |
| 8 | * (at your option) any later version. | |
| 9 | * | |
| 10 | * This program is distributed in the hope that it will be useful, | |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See | |
| 13 | * the GNU General Public License for more details. | |
| 14 | * | |
| 15 | * You should have received a copy of the GNU General Public License | |
| 16 | * along with this program; if not, write to the Free Software | |
| 17 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
| 18 | */ | |
| 19 | ||
| 20 | #ifndef _ASM_POWERPC_DCR_NATIVE_H | |
| 21 | #define _ASM_POWERPC_DCR_NATIVE_H | |
| 22 | #ifdef __KERNEL__ | |
| 45d8e7aa | 23 | #ifndef __ASSEMBLY__ |
| 4c75a6f4 | 24 | |
| 0b94a1ee ME |
25 | typedef struct { |
| 26 | unsigned int base; | |
| 27 | } dcr_host_t; | |
| 4c75a6f4 BH |
28 | |
| 29 | #define DCR_MAP_OK(host) (1) | |
| 30 | ||
| 0b94a1ee | 31 | #define dcr_map(dev, dcr_n, dcr_c) ((dcr_host_t){ .base = (dcr_n) }) |
| cdbd3865 | 32 | #define dcr_unmap(host, dcr_c) do {} while (0) |
| 83f34df4 ME |
33 | #define dcr_read(host, dcr_n) mfdcr(dcr_n + host.base) |
| 34 | #define dcr_write(host, dcr_n, value) mtdcr(dcr_n + host.base, value) | |
| 4c75a6f4 | 35 | |
| 45d8e7aa KG |
36 | /* Device Control Registers */ |
| 37 | void __mtdcr(int reg, unsigned int val); | |
| 38 | unsigned int __mfdcr(int reg); | |
| 39 | #define mfdcr(rn) \ | |
| 40 | ({unsigned int rval; \ | |
| 41 | if (__builtin_constant_p(rn)) \ | |
| 42 | asm volatile("mfdcr %0," __stringify(rn) \ | |
| 43 | : "=r" (rval)); \ | |
| 44 | else \ | |
| 45 | rval = __mfdcr(rn); \ | |
| 46 | rval;}) | |
| 47 | ||
| 48 | #define mtdcr(rn, v) \ | |
| 49 | do { \ | |
| 50 | if (__builtin_constant_p(rn)) \ | |
| 51 | asm volatile("mtdcr " __stringify(rn) ",%0" \ | |
| 52 | : : "r" (v)); \ | |
| 53 | else \ | |
| 54 | __mtdcr(rn, v); \ | |
| 55 | } while (0) | |
| 56 | ||
| 57 | /* R/W of indirect DCRs make use of standard naming conventions for DCRs */ | |
| 58 | #define mfdcri(base, reg) \ | |
| 59 | ({ \ | |
| 60 | mtdcr(base ## _CFGADDR, base ## _ ## reg); \ | |
| 61 | mfdcr(base ## _CFGDATA); \ | |
| 62 | }) | |
| 63 | ||
| 64 | #define mtdcri(base, reg, data) \ | |
| 65 | do { \ | |
| 66 | mtdcr(base ## _CFGADDR, base ## _ ## reg); \ | |
| 67 | mtdcr(base ## _CFGDATA, data); \ | |
| 68 | } while (0) | |
| 4c75a6f4 | 69 | |
| 45d8e7aa | 70 | #endif /* __ASSEMBLY__ */ |
| 4c75a6f4 BH |
71 | #endif /* __KERNEL__ */ |
| 72 | #endif /* _ASM_POWERPC_DCR_NATIVE_H */ | |
| 73 | ||
| 74 |