diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/powerpc/include/asm/cpm.h | 47 | ||||
| -rw-r--r-- | arch/powerpc/include/asm/qe.h | 50 | ||||
| -rw-r--r-- | arch/powerpc/sysdev/Makefile | 1 | ||||
| -rw-r--r-- | arch/powerpc/sysdev/cpm_common.c | 208 | ||||
| -rw-r--r-- | arch/powerpc/sysdev/qe_lib/Makefile | 4 | ||||
| -rw-r--r-- | arch/powerpc/sysdev/qe_lib/qe_common.c | 235 |
6 files changed, 290 insertions, 255 deletions
diff --git a/arch/powerpc/include/asm/cpm.h b/arch/powerpc/include/asm/cpm.h index 46e86b50abf3..0958028cf31a 100644 --- a/arch/powerpc/include/asm/cpm.h +++ b/arch/powerpc/include/asm/cpm.h @@ -2,10 +2,10 @@ #define __CPM_H #include <linux/compiler.h> -#include <linux/genalloc.h> #include <linux/types.h> #include <linux/errno.h> #include <linux/of.h> +#include <asm/qe.h> /* * SPI Parameter RAM common to QE and CPM. @@ -156,51 +156,6 @@ typedef struct cpm_buf_desc { */ #define BD_I2C_START (0x0400) -int cpm_muram_init(void); - -#if defined(CONFIG_CPM) || defined(CONFIG_QUICC_ENGINE) -unsigned long cpm_muram_alloc(unsigned long size, unsigned long align); -int cpm_muram_free(unsigned long offset); -unsigned long cpm_muram_alloc_fixed(unsigned long offset, unsigned long size); -unsigned long cpm_muram_alloc_common(unsigned long size, genpool_algo_t algo, - void *data); -void __iomem *cpm_muram_addr(unsigned long offset); -unsigned long cpm_muram_offset(void __iomem *addr); -dma_addr_t cpm_muram_dma(void __iomem *addr); -#else -static inline unsigned long cpm_muram_alloc(unsigned long size, - unsigned long align) -{ - return -ENOSYS; -} - -static inline int cpm_muram_free(unsigned long offset) -{ - return -ENOSYS; -} - -static inline unsigned long cpm_muram_alloc_fixed(unsigned long offset, - unsigned long size) -{ - return -ENOSYS; -} - -static inline void __iomem *cpm_muram_addr(unsigned long offset) -{ - return NULL; -} - -static inline unsigned long cpm_muram_offset(void __iomem *addr) -{ - return -ENOSYS; -} - -static inline dma_addr_t cpm_muram_dma(void __iomem *addr) -{ - return 0; -} -#endif /* defined(CONFIG_CPM) || defined(CONFIG_QUICC_ENGINE) */ - #ifdef CONFIG_CPM int cpm_command(u32 command, u8 opcode); #else diff --git a/arch/powerpc/include/asm/qe.h b/arch/powerpc/include/asm/qe.h index 32b9bfa0c9bd..ceeaf91854b5 100644 --- a/arch/powerpc/include/asm/qe.h +++ b/arch/powerpc/include/asm/qe.h @@ -16,11 +16,16 @@ #define _ASM_POWERPC_QE_H #ifdef __KERNEL__ +#include <linux/compiler.h> +#include <linux/genalloc.h> #include <linux/spinlock.h> #include <linux/errno.h> #include <linux/err.h> #include <asm/cpm.h> #include <asm/immap_qe.h> +#include <linux/of.h> +#include <linux/of_address.h> +#include <linux/types.h> #define QE_NUM_OF_SNUM 256 /* There are 256 serial number in QE */ #define QE_NUM_OF_BRGS 16 @@ -92,6 +97,51 @@ extern void qe_reset(void); static inline void qe_reset(void) {} #endif +int cpm_muram_init(void); + +#if defined(CONFIG_CPM) || defined(CONFIG_QUICC_ENGINE) +unsigned long cpm_muram_alloc(unsigned long size, unsigned long align); +int cpm_muram_free(unsigned long offset); +unsigned long cpm_muram_alloc_fixed(unsigned long offset, unsigned long size); +unsigned long cpm_muram_alloc_common(unsigned long size, genpool_algo_t algo, + void *data); +void __iomem *cpm_muram_addr(unsigned long offset); +unsigned long cpm_muram_offset(void __iomem *addr); +dma_addr_t cpm_muram_dma(void __iomem *addr); +#else +static inline unsigned long cpm_muram_alloc(unsigned long size, + unsigned long align) +{ + return -ENOSYS; +} + +static inline int cpm_muram_free(unsigned long offset) +{ + return -ENOSYS; +} + +static inline unsigned long cpm_muram_alloc_fixed(unsigned long offset, + unsigned long size) +{ + return -ENOSYS; +} + +static inline void __iomem *cpm_muram_addr(unsigned long offset) +{ + return NULL; +} + +static inline unsigned long cpm_muram_offset(void __iomem *addr) +{ + return -ENOSYS; +} + +static inline dma_addr_t cpm_muram_dma(void __iomem *addr) +{ + return 0; +} +#endif /* defined(CONFIG_CPM) || defined(CONFIG_QUICC_ENGINE) */ + /* QE PIO */ #define QE_PIO_PINS 32 diff --git a/arch/powerpc/sysdev/Makefile b/arch/powerpc/sysdev/Makefile index 5b492a6438ff..f1d47498ddf2 100644 --- a/arch/powerpc/sysdev/Makefile +++ b/arch/powerpc/sysdev/Makefile @@ -27,6 +27,7 @@ obj-$(CONFIG_SIMPLE_GPIO) += simple_gpio.o obj-$(CONFIG_FSL_RIO) += fsl_rio.o fsl_rmu.o obj-$(CONFIG_TSI108_BRIDGE) += tsi108_pci.o tsi108_dev.o obj-$(CONFIG_QUICC_ENGINE) += qe_lib/ +obj-$(CONFIG_CPM) += qe_lib/ mv64x60-$(CONFIG_PCI) += mv64x60_pci.o obj-$(CONFIG_MV64X60) += $(mv64x60-y) mv64x60_pic.o mv64x60_dev.o \ mv64x60_udbg.o diff --git a/arch/powerpc/sysdev/cpm_common.c b/arch/powerpc/sysdev/cpm_common.c index fcc83cd9cc2f..6993aa8e7242 100644 --- a/arch/powerpc/sysdev/cpm_common.c +++ b/arch/powerpc/sysdev/cpm_common.c @@ -17,7 +17,6 @@ * published by the Free Software Foundation. */ -#include <linux/genalloc.h> #include <linux/init.h> #include <linux/of_device.h> #include <linux/spinlock.h> @@ -29,6 +28,7 @@ #include <asm/udbg.h> #include <asm/io.h> #include <asm/cpm.h> +#include <asm/qe.h> #include <mm/mmu_decl.h> @@ -65,212 +65,6 @@ void __init udbg_init_cpm(void) } #endif -static struct gen_pool *muram_pool; -static spinlock_t cpm_muram_lock; -static u8 __iomem *muram_vbase; -static phys_addr_t muram_pbase; - -struct muram_block { - struct list_head head; - unsigned long start; - int size; -}; - -static LIST_HEAD(muram_block_list); - -/* max address size we deal with */ -#define OF_MAX_ADDR_CELLS 4 -#define GENPOOL_OFFSET (4096 * 8) - -int cpm_muram_init(void) -{ - struct device_node *np; - struct resource r; - u32 zero[OF_MAX_ADDR_CELLS] = {}; - resource_size_t max = 0; - int i = 0; - int ret = 0; - - if (muram_pbase) - return 0; - - spin_lock_init(&cpm_muram_lock); - np = of_find_compatible_node(NULL, NULL, "fsl,cpm-muram-data"); - if (!np) { - /* try legacy bindings */ - np = of_find_node_by_name(NULL, "data-only"); - if (!np) { - pr_err("Cannot find CPM muram data node"); - ret = -ENODEV; - goto out_muram; - } - } - - muram_pool = gen_pool_create(0, -1); - muram_pbase = of_translate_address(np, zero); - if (muram_pbase == (phys_addr_t)OF_BAD_ADDR) { - pr_err("Cannot translate zero through CPM muram node"); - ret = -ENODEV; - goto out_pool; - } - - while (of_address_to_resource(np, i++, &r) == 0) { - if (r.end > max) - max = r.end; - ret = gen_pool_add(muram_pool, r.start - muram_pbase + - GENPOOL_OFFSET, resource_size(&r), -1); - if (ret) { - pr_err("QE: couldn't add muram to pool!\n"); - goto out_pool; - } - } - - muram_vbase = ioremap(muram_pbase, max - muram_pbase + 1); - if (!muram_vbase) { - pr_err("Cannot map QE muram"); - ret = -ENOMEM; - goto out_pool; - } - goto out_muram; -out_pool: - gen_pool_destroy(muram_pool); -out_muram: - of_node_put(np); - return ret; -} - -/* - * cpm_muram_alloc - allocate the requested size worth of multi-user ram - * @size: number of bytes to allocate - * @align: requested alignment, in bytes - * - * This function returns an offset into the muram area. - * Use cpm_dpram_addr() to get the virtual address of the area. - * Use cpm_muram_free() to free the allocation. - */ -unsigned long cpm_muram_alloc(unsigned long size, unsigned long align) -{ - unsigned long start; - unsigned long flags; - struct genpool_data_align muram_pool_data; - - spin_lock_irqsave(&cpm_muram_lock, flags); - muram_pool_data.align = align; - start = cpm_muram_alloc_common(size, gen_pool_first_fit_align, - &muram_pool_data); - spin_unlock_irqrestore(&cpm_muram_lock, flags); - return start; -} -EXPORT_SYMBOL(cpm_muram_alloc); - -/** - * cpm_muram_free - free a chunk of multi-user ram - * @offset: The beginning of the chunk as returned by cpm_muram_alloc(). - */ -int cpm_muram_free(unsigned long offset) -{ - unsigned long flags; - int size; - struct muram_block *tmp; - - size = 0; - spin_lock_irqsave(&cpm_muram_lock, flags); - list_for_each_entry(tmp, &muram_block_list, head) { - if (tmp->start == offset) { - size = tmp->size; - list_del(&tmp->head); - kfree(tmp); - break; - } - } - gen_pool_free(muram_pool, offset + GENPOOL_OFFSET, size); - spin_unlock_irqrestore(&cpm_muram_lock, flags); - return size; -} -EXPORT_SYMBOL(cpm_muram_free); - -/* - * cpm_muram_alloc_fixed - reserve a specific region of multi-user ram - * @offset: offset of allocation start address - * @size: number of bytes to allocate - * This function returns an offset into the muram area - * Use cpm_dpram_addr() to get the virtual address of the area. - * Use cpm_muram_free() to free the allocation. - */ -unsigned long cpm_muram_alloc_fixed(unsigned long offset, unsigned long size) -{ - unsigned long start; - unsigned long flags; - struct genpool_data_fixed muram_pool_data_fixed; - - spin_lock_irqsave(&cpm_muram_lock, flags); - muram_pool_data_fixed.offset = offset + GENPOOL_OFFSET; - start = cpm_muram_alloc_common(size, gen_pool_fixed_alloc, - &muram_pool_data_fixed); - spin_unlock_irqrestore(&cpm_muram_lock, flags); - return start; -} -EXPORT_SYMBOL(cpm_muram_alloc_fixed); - -/* - * cpm_muram_alloc_common - cpm_muram_alloc common code - * @size: number of bytes to allocate - * @algo: algorithm for alloc. - * @data: data for genalloc's algorithm. - * - * This function returns an offset into the muram area. - */ -unsigned long cpm_muram_alloc_common(unsigned long size, genpool_algo_t algo, - void *data) -{ - struct muram_block *entry; - unsigned long start; - - start = gen_pool_alloc_algo(muram_pool, size, algo, data); - if (!start) - goto out2; - start = start - GENPOOL_OFFSET; - memset_io(cpm_muram_addr(start), 0, size); - entry = kmalloc(sizeof(*entry), GFP_KERNEL); - if (!entry) - goto out1; - entry->start = start; - entry->size = size; - list_add(&entry->head, &muram_block_list); - - return start; -out1: - gen_pool_free(muram_pool, start, size); -out2: - return (unsigned long)-ENOMEM; -} - -/** - * cpm_muram_addr - turn a muram offset into a virtual address - * @offset: muram offset to convert - */ -void __iomem *cpm_muram_addr(unsigned long offset) -{ - return muram_vbase + offset; -} -EXPORT_SYMBOL(cpm_muram_addr); - -unsigned long cpm_muram_offset(void __iomem *addr) -{ - return addr - (void __iomem *)muram_vbase; -} -EXPORT_SYMBOL(cpm_muram_offset); - -/** - * cpm_muram_dma - turn a muram virtual address into a DMA address - * @offset: virtual address from cpm_muram_addr() to convert - */ -dma_addr_t cpm_muram_dma(void __iomem *addr) -{ - return muram_pbase + ((u8 __iomem *)addr - muram_vbase); -} -EXPORT_SYMBOL(cpm_muram_dma); - #if defined(CONFIG_CPM2) || defined(CONFIG_8xx_GPIO) struct cpm2_ioports { diff --git a/arch/powerpc/sysdev/qe_lib/Makefile b/arch/powerpc/sysdev/qe_lib/Makefile index f1855c185291..ffac5410c5c7 100644 --- a/arch/powerpc/sysdev/qe_lib/Makefile +++ b/arch/powerpc/sysdev/qe_lib/Makefile @@ -1,8 +1,8 @@ # # Makefile for the linux ppc-specific parts of QE # -obj-$(CONFIG_QUICC_ENGINE)+= qe.o qe_ic.o qe_io.o - +obj-$(CONFIG_QUICC_ENGINE)+= qe.o qe_common.o qe_ic.o qe_io.o +obj-$(CONFIG_CPM) += qe_common.o obj-$(CONFIG_UCC) += ucc.o obj-$(CONFIG_UCC_SLOW) += ucc_slow.o obj-$(CONFIG_UCC_FAST) += ucc_fast.o diff --git a/arch/powerpc/sysdev/qe_lib/qe_common.c b/arch/powerpc/sysdev/qe_lib/qe_common.c new file mode 100644 index 000000000000..b90043f1503b --- /dev/null +++ b/arch/powerpc/sysdev/qe_lib/qe_common.c @@ -0,0 +1,235 @@ +/* + * Common CPM code + * + * Author: Scott Wood <scottwood@freescale.com> + * + * Copyright 2007-2008,2010 Freescale Semiconductor, Inc. + * + * Some parts derived from commproc.c/cpm2_common.c, which is: + * Copyright (c) 1997 Dan error_act (dmalek@jlc.net) + * Copyright (c) 1999-2001 Dan Malek <dan@embeddedalley.com> + * Copyright (c) 2000 MontaVista Software, Inc (source@mvista.com) + * 2006 (c) MontaVista Software, Inc. + * Vitaly Bordug <vbordug@ru.mvista.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of version 2 of the GNU General Public License as + * published by the Free Software Foundation. + */ +#include <linux/genalloc.h> +#include <linux/init.h> +#include <linux/list.h> +#include <linux/of_device.h> +#include <linux/spinlock.h> +#include <linux/export.h> +#include <linux/of.h> +#include <linux/of_address.h> +#include <linux/slab.h> +#include <linux/io.h> +#include <asm/qe.h> + +static struct gen_pool *muram_pool; +static spinlock_t cpm_muram_lock; +static u8 __iomem *muram_vbase; +static phys_addr_t muram_pbase; + +struct muram_block { + struct list_head head; + unsigned long start; + int size; +}; + +static LIST_HEAD(muram_block_list); + +/* max address size we deal with */ +#define OF_MAX_ADDR_CELLS 4 +#define GENPOOL_OFFSET (4096 * 8) + +int cpm_muram_init(void) +{ + struct device_node *np; + struct resource r; + u32 zero[OF_MAX_ADDR_CELLS] = {}; + resource_size_t max = 0; + int i = 0; + int ret = 0; + + if (muram_pbase) + return 0; + + spin_lock_init(&cpm_muram_lock); + np = of_find_compatible_node(NULL, NULL, "fsl,cpm-muram-data"); + if (!np) { + /* try legacy bindings */ + np = of_find_node_by_name(NULL, "data-only"); + if (!np) { + pr_err("Cannot find CPM muram data node"); + ret = -ENODEV; + goto out_muram; + } + } + + muram_pool = gen_pool_create(0, -1); + muram_pbase = of_translate_address(np, zero); + if (muram_pbase == (phys_addr_t)OF_BAD_ADDR) { + pr_err("Cannot translate zero through CPM muram node"); + ret = -ENODEV; + goto out_pool; + } + + while (of_address_to_resource(np, i++, &r) == 0) { + if (r.end > max) + max = r.end; + ret = gen_pool_add(muram_pool, r.start - muram_pbase + + GENPOOL_OFFSET, resource_size(&r), -1); + if (ret) { + pr_err("QE: couldn't add muram to pool!\n"); + goto out_pool; + } + } + + muram_vbase = ioremap(muram_pbase, max - muram_pbase + 1); + if (!muram_vbase) { + pr_err("Cannot map QE muram"); + ret = -ENOMEM; + goto out_pool; + } + goto out_muram; +out_pool: + gen_pool_destroy(muram_pool); +out_muram: + of_node_put(np); + return ret; +} + +/* + * cpm_muram_alloc - allocate the requested size worth of multi-user ram + * @size: number of bytes to allocate + * @align: requested alignment, in bytes + * + * This function returns an offset into the muram area. + * Use cpm_dpram_addr() to get the virtual address of the area. + * Use cpm_muram_free() to free the allocation. + */ +unsigned long cpm_muram_alloc(unsigned long size, unsigned long align) +{ + unsigned long start; + unsigned long flags; + struct genpool_data_align muram_pool_data; + + spin_lock_irqsave(&cpm_muram_lock, flags); + muram_pool_data.align = align; + start = cpm_muram_alloc_common(size, gen_pool_first_fit_align, + &muram_pool_data); + spin_unlock_irqrestore(&cpm_muram_lock, flags); + return start; +} +EXPORT_SYMBOL(cpm_muram_alloc); + +/** + * cpm_muram_free - free a chunk of multi-user ram + * @offset: The beginning of the chunk as returned by cpm_muram_alloc(). + */ +int cpm_muram_free(unsigned long offset) +{ + unsigned long flags; + int size; + struct muram_block *tmp; + + size = 0; + spin_lock_irqsave(&cpm_muram_lock, flags); + list_for_each_entry(tmp, &muram_block_list, head) { + if (tmp->start == offset) { + size = tmp->size; + list_del(&tmp->head); + kfree(tmp); + break; + } + } + gen_pool_free(muram_pool, offset + GENPOOL_OFFSET, size); + spin_unlock_irqrestore(&cpm_muram_lock, flags); + return size; +} +EXPORT_SYMBOL(cpm_muram_free); + +/* + * cpm_muram_alloc_fixed - reserve a specific region of multi-user ram + * @offset: offset of allocation start address + * @size: number of bytes to allocate + * This function returns an offset into the muram area + * Use cpm_dpram_addr() to get the virtual address of the area. + * Use cpm_muram_free() to free the allocation. + */ +unsigned long cpm_muram_alloc_fixed(unsigned long offset, unsigned long size) +{ + unsigned long start; + unsigned long flags; + struct genpool_data_fixed muram_pool_data_fixed; + + spin_lock_irqsave(&cpm_muram_lock, flags); + muram_pool_data_fixed.offset = offset + GENPOOL_OFFSET; + start = cpm_muram_alloc_common(size, gen_pool_fixed_alloc, + &muram_pool_data_fixed); + spin_unlock_irqrestore(&cpm_muram_lock, flags); + return start; +} +EXPORT_SYMBOL(cpm_muram_alloc_fixed); + +/* + * cpm_muram_alloc_common - cpm_muram_alloc common code + * @size: number of bytes to allocate + * @algo: algorithm for alloc. + * @data: data for genalloc's algorithm. + * + * This function returns an offset into the muram area. + */ +unsigned long cpm_muram_alloc_common(unsigned long size, genpool_algo_t algo, + void *data) +{ + struct muram_block *entry; + unsigned long start; + + start = gen_pool_alloc_algo(muram_pool, size, algo, data); + if (!start) + goto out2; + start = start - GENPOOL_OFFSET; + memset_io(cpm_muram_addr(start), 0, size); + entry = kmalloc(sizeof(*entry), GFP_KERNEL); + if (!entry) + goto out1; + entry->start = start; + entry->size = size; + list_add(&entry->head, &muram_block_list); + + return start; +out1: + gen_pool_free(muram_pool, start, size); +out2: + return (unsigned long)-ENOMEM; +} + +/** + * cpm_muram_addr - turn a muram offset into a virtual address + * @offset: muram offset to convert + */ +void __iomem *cpm_muram_addr(unsigned long offset) +{ + return muram_vbase + offset; +} +EXPORT_SYMBOL(cpm_muram_addr); + +unsigned long cpm_muram_offset(void __iomem *addr) +{ + return addr - (void __iomem *)muram_vbase; +} +EXPORT_SYMBOL(cpm_muram_offset); + +/** + * cpm_muram_dma - turn a muram virtual address into a DMA address + * @offset: virtual address from cpm_muram_addr() to convert + */ +dma_addr_t cpm_muram_dma(void __iomem *addr) +{ + return muram_pbase + ((u8 __iomem *)addr - muram_vbase); +} +EXPORT_SYMBOL(cpm_muram_dma); |