diff options
Diffstat (limited to 'include/asm-powerpc')
| -rw-r--r-- | include/asm-powerpc/dcr-generic.h | 49 | ||||
| -rw-r--r-- | include/asm-powerpc/dcr-mmio.h | 20 | ||||
| -rw-r--r-- | include/asm-powerpc/dcr-native.h | 16 | ||||
| -rw-r--r-- | include/asm-powerpc/dcr.h | 39 |
4 files changed, 110 insertions, 14 deletions
diff --git a/include/asm-powerpc/dcr-generic.h b/include/asm-powerpc/dcr-generic.h new file mode 100644 index 00000000000..35b71599ec4 --- /dev/null +++ b/include/asm-powerpc/dcr-generic.h @@ -0,0 +1,49 @@ +/* + * (c) Copyright 2006 Benjamin Herrenschmidt, IBM Corp. + * <benh@kernel.crashing.org> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See + * the GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#ifndef _ASM_POWERPC_DCR_GENERIC_H +#define _ASM_POWERPC_DCR_GENERIC_H +#ifdef __KERNEL__ +#ifndef __ASSEMBLY__ + +enum host_type_t {DCR_HOST_MMIO, DCR_HOST_NATIVE, DCR_HOST_INVALID}; + +typedef struct { + enum host_type_t type; + union { + dcr_host_mmio_t mmio; + dcr_host_native_t native; + } host; +} dcr_host_t; + +extern bool dcr_map_ok_generic(dcr_host_t host); + +extern dcr_host_t dcr_map_generic(struct device_node *dev, unsigned int dcr_n, + unsigned int dcr_c); +extern void dcr_unmap_generic(dcr_host_t host, unsigned int dcr_c); + +extern u32 dcr_read_generic(dcr_host_t host, unsigned int dcr_n); + +extern void dcr_write_generic(dcr_host_t host, unsigned int dcr_n, u32 value); + +#endif /* __ASSEMBLY__ */ +#endif /* __KERNEL__ */ +#endif /* _ASM_POWERPC_DCR_GENERIC_H */ + + diff --git a/include/asm-powerpc/dcr-mmio.h b/include/asm-powerpc/dcr-mmio.h index 08532ff1899..acd491dbd45 100644 --- a/include/asm-powerpc/dcr-mmio.h +++ b/include/asm-powerpc/dcr-mmio.h @@ -27,20 +27,26 @@ typedef struct { void __iomem *token; unsigned int stride; unsigned int base; -} dcr_host_t; +} dcr_host_mmio_t; -#define DCR_MAP_OK(host) ((host).token != NULL) +static inline bool dcr_map_ok_mmio(dcr_host_mmio_t host) +{ + return host.token != NULL; +} -extern dcr_host_t dcr_map(struct device_node *dev, unsigned int dcr_n, - unsigned int dcr_c); -extern void dcr_unmap(dcr_host_t host, unsigned int dcr_c); +extern dcr_host_mmio_t dcr_map_mmio(struct device_node *dev, + unsigned int dcr_n, + unsigned int dcr_c); +extern void dcr_unmap_mmio(dcr_host_mmio_t host, unsigned int dcr_c); -static inline u32 dcr_read(dcr_host_t host, unsigned int dcr_n) +static inline u32 dcr_read_mmio(dcr_host_mmio_t host, unsigned int dcr_n) { return in_be32(host.token + ((host.base + dcr_n) * host.stride)); } -static inline void dcr_write(dcr_host_t host, unsigned int dcr_n, u32 value) +static inline void dcr_write_mmio(dcr_host_mmio_t host, + unsigned int dcr_n, + u32 value) { out_be32(host.token + ((host.base + dcr_n) * host.stride), value); } diff --git a/include/asm-powerpc/dcr-native.h b/include/asm-powerpc/dcr-native.h index f8398ce8037..72d2b72c739 100644 --- a/include/asm-powerpc/dcr-native.h +++ b/include/asm-powerpc/dcr-native.h @@ -26,14 +26,18 @@ typedef struct { unsigned int base; -} dcr_host_t; +} dcr_host_native_t; -#define DCR_MAP_OK(host) (1) +static inline bool dcr_map_ok_native(dcr_host_native_t host) +{ + return 1; +} -#define dcr_map(dev, dcr_n, dcr_c) ((dcr_host_t){ .base = (dcr_n) }) -#define dcr_unmap(host, dcr_c) do {} while (0) -#define dcr_read(host, dcr_n) mfdcr(dcr_n + host.base) -#define dcr_write(host, dcr_n, value) mtdcr(dcr_n + host.base, value) +#define dcr_map_native(dev, dcr_n, dcr_c) \ + ((dcr_host_native_t){ .base = (dcr_n) }) +#define dcr_unmap_native(host, dcr_c) do {} while (0) +#define dcr_read_native(host, dcr_n) mfdcr(dcr_n + host.base) +#define dcr_write_native(host, dcr_n, value) mtdcr(dcr_n + host.base, value) /* Device Control Registers */ void __mtdcr(int reg, unsigned int val); diff --git a/include/asm-powerpc/dcr.h b/include/asm-powerpc/dcr.h index 9338d50538f..53b283050ab 100644 --- a/include/asm-powerpc/dcr.h +++ b/include/asm-powerpc/dcr.h @@ -20,14 +20,50 @@ #ifndef _ASM_POWERPC_DCR_H #define _ASM_POWERPC_DCR_H #ifdef __KERNEL__ +#ifndef __ASSEMBLY__ #ifdef CONFIG_PPC_DCR #ifdef CONFIG_PPC_DCR_NATIVE #include <asm/dcr-native.h> -#else +#endif + +#ifdef CONFIG_PPC_DCR_MMIO #include <asm/dcr-mmio.h> #endif + +/* Indirection layer for providing both NATIVE and MMIO support. */ + +#if defined(CONFIG_PPC_DCR_NATIVE) && defined(CONFIG_PPC_DCR_MMIO) + +#include <asm/dcr-generic.h> + +#define DCR_MAP_OK(host) dcr_map_ok_generic(host) +#define dcr_map(dev, dcr_n, dcr_c) dcr_map_generic(dev, dcr_n, dcr_c) +#define dcr_unmap(host, dcr_c) dcr_unmap_generic(host, dcr_c) +#define dcr_read(host, dcr_n) dcr_read_generic(host, dcr_n) +#define dcr_write(host, dcr_n, value) dcr_write_generic(host, dcr_n, value) + +#else + +#ifdef CONFIG_PPC_DCR_NATIVE +typedef dcr_host_native_t dcr_host_t; +#define DCR_MAP_OK(host) dcr_map_ok_native(host) +#define dcr_map(dev, dcr_n, dcr_c) dcr_map_native(dev, dcr_n, dcr_c) +#define dcr_unmap(host, dcr_c) dcr_unmap_native(host, dcr_c) +#define dcr_read(host, dcr_n) dcr_read_native(host, dcr_n) +#define dcr_write(host, dcr_n, value) dcr_write_native(host, dcr_n, value) +#else +typedef dcr_host_mmio_t dcr_host_t; +#define DCR_MAP_OK(host) dcr_map_ok_mmio(host) +#define dcr_map(dev, dcr_n, dcr_c) dcr_map_mmio(dev, dcr_n, dcr_c) +#define dcr_unmap(host, dcr_c) dcr_unmap_mmio(host, dcr_c) +#define dcr_read(host, dcr_n) dcr_read_mmio(host, dcr_n) +#define dcr_write(host, dcr_n, value) dcr_write_mmio(host, dcr_n, value) +#endif + +#endif /* defined(CONFIG_PPC_DCR_NATIVE) && defined(CONFIG_PPC_DCR_MMIO) */ + /* * On CONFIG_PPC_MERGE, we have additional helpers to read the DCR * base from the device-tree @@ -41,5 +77,6 @@ extern unsigned int dcr_resource_len(struct device_node *np, #endif /* CONFIG_PPC_MERGE */ #endif /* CONFIG_PPC_DCR */ +#endif /* __ASSEMBLY__ */ #endif /* __KERNEL__ */ #endif /* _ASM_POWERPC_DCR_H */ |