diff options
author | Christophe Leroy <christophe.leroy@csgroup.eu> | 2022-03-31 13:03:06 +0300 |
---|---|---|
committer | Michael Ellerman <mpe@ellerman.id.au> | 2022-05-22 08:58:30 +0300 |
commit | dc21ed2aef4150fc2fcf58227a4ff24502015c03 (patch) | |
tree | 31679737f6f1ab8dbd2807d96546f0f7669c8d33 | |
parent | 5dd9e27ea4a39f7edd4bf81e9e70208e7ac0b7c9 (diff) | |
download | linux-dc21ed2aef4150fc2fcf58227a4ff24502015c03.tar.xz |
powerpc/85xx: Remove FSL_85XX_CACHE_SRAM
CONFIG_FSL_85XX_CACHE_SRAM is an option that is not
user selectable and which is not selected by any driver
nor any defconfig.
Remove it and all associated code.
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/9949813a6b758903b7bee910f798ba2ca82ff8ee.1648720908.git.christophe.leroy@csgroup.eu
-rw-r--r-- | Documentation/devicetree/bindings/powerpc/fsl/cache_sram.txt | 20 | ||||
-rw-r--r-- | arch/powerpc/include/asm/fsl_85xx_cache_sram.h | 35 | ||||
-rw-r--r-- | arch/powerpc/platforms/85xx/Kconfig | 9 | ||||
-rw-r--r-- | arch/powerpc/sysdev/Makefile | 1 | ||||
-rw-r--r-- | arch/powerpc/sysdev/fsl_85xx_cache_ctlr.h | 88 | ||||
-rw-r--r-- | arch/powerpc/sysdev/fsl_85xx_cache_sram.c | 147 | ||||
-rw-r--r-- | arch/powerpc/sysdev/fsl_85xx_l2ctlr.c | 216 |
7 files changed, 0 insertions, 516 deletions
diff --git a/Documentation/devicetree/bindings/powerpc/fsl/cache_sram.txt b/Documentation/devicetree/bindings/powerpc/fsl/cache_sram.txt deleted file mode 100644 index 781955f5217d..000000000000 --- a/Documentation/devicetree/bindings/powerpc/fsl/cache_sram.txt +++ /dev/null @@ -1,20 +0,0 @@ -* Freescale PQ3 and QorIQ based Cache SRAM - -Freescale's mpc85xx and some QorIQ platforms provide an -option of configuring a part of (or full) cache memory -as SRAM. This cache SRAM representation in the device -tree should be done as under:- - -Required properties: - -- compatible : should be "fsl,p2020-cache-sram" -- fsl,cache-sram-ctlr-handle : points to the L2 controller -- reg : offset and length of the cache-sram. - -Example: - -cache-sram@fff00000 { - fsl,cache-sram-ctlr-handle = <&L2>; - reg = <0 0xfff00000 0 0x10000>; - compatible = "fsl,p2020-cache-sram"; -}; diff --git a/arch/powerpc/include/asm/fsl_85xx_cache_sram.h b/arch/powerpc/include/asm/fsl_85xx_cache_sram.h deleted file mode 100644 index 0235a0447baa..000000000000 --- a/arch/powerpc/include/asm/fsl_85xx_cache_sram.h +++ /dev/null @@ -1,35 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0-or-later */ -/* - * Copyright 2009 Freescale Semiconductor, Inc. - * - * Cache SRAM handling for QorIQ platform - * - * Author: Vivek Mahajan <vivek.mahajan@freescale.com> - - * This file is derived from the original work done - * by Sylvain Munaut for the Bestcomm SRAM allocator. - */ - -#ifndef __ASM_POWERPC_FSL_85XX_CACHE_SRAM_H__ -#define __ASM_POWERPC_FSL_85XX_CACHE_SRAM_H__ - -#include <asm/rheap.h> -#include <linux/spinlock.h> - -/* - * Cache-SRAM - */ - -struct mpc85xx_cache_sram { - phys_addr_t base_phys; - void *base_virt; - unsigned int size; - rh_info_t *rh; - spinlock_t lock; -}; - -extern void mpc85xx_cache_sram_free(void *ptr); -extern void *mpc85xx_cache_sram_alloc(unsigned int size, - phys_addr_t *phys, unsigned int align); - -#endif /* __AMS_POWERPC_FSL_85XX_CACHE_SRAM_H__ */ diff --git a/arch/powerpc/platforms/85xx/Kconfig b/arch/powerpc/platforms/85xx/Kconfig index 4142ebf01382..2be17ffe8714 100644 --- a/arch/powerpc/platforms/85xx/Kconfig +++ b/arch/powerpc/platforms/85xx/Kconfig @@ -16,15 +16,6 @@ if FSL_SOC_BOOKE if PPC32 -config FSL_85XX_CACHE_SRAM - bool - select PPC_LIB_RHEAP - help - When selected, this option enables cache-sram support - for memory allocation on P1/P2 QorIQ platforms. - cache-sram-size and cache-sram-offset kernel boot - parameters should be passed when this option is enabled. - config BSC9131_RDB bool "Freescale BSC9131RDB" select DEFAULT_UIMAGE diff --git a/arch/powerpc/sysdev/Makefile b/arch/powerpc/sysdev/Makefile index 026b3f01a991..9cb1d029511a 100644 --- a/arch/powerpc/sysdev/Makefile +++ b/arch/powerpc/sysdev/Makefile @@ -23,7 +23,6 @@ obj-$(CONFIG_FSL_PMC) += fsl_pmc.o obj-$(CONFIG_FSL_CORENET_RCPM) += fsl_rcpm.o obj-$(CONFIG_FSL_LBC) += fsl_lbc.o obj-$(CONFIG_FSL_GTM) += fsl_gtm.o -obj-$(CONFIG_FSL_85XX_CACHE_SRAM) += fsl_85xx_l2ctlr.o fsl_85xx_cache_sram.o obj-$(CONFIG_FSL_RIO) += fsl_rio.o fsl_rmu.o obj-$(CONFIG_TSI108_BRIDGE) += tsi108_pci.o tsi108_dev.o obj-$(CONFIG_RTC_DRV_CMOS) += rtc_cmos_setup.o diff --git a/arch/powerpc/sysdev/fsl_85xx_cache_ctlr.h b/arch/powerpc/sysdev/fsl_85xx_cache_ctlr.h deleted file mode 100644 index ce370749add9..000000000000 --- a/arch/powerpc/sysdev/fsl_85xx_cache_ctlr.h +++ /dev/null @@ -1,88 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0-or-later */ -/* - * Copyright 2009-2010, 2012 Freescale Semiconductor, Inc - * - * QorIQ based Cache Controller Memory Mapped Registers - * - * Author: Vivek Mahajan <vivek.mahajan@freescale.com> - */ - -#ifndef __FSL_85XX_CACHE_CTLR_H__ -#define __FSL_85XX_CACHE_CTLR_H__ - -#define L2CR_L2FI 0x40000000 /* L2 flash invalidate */ -#define L2CR_L2IO 0x00200000 /* L2 instruction only */ -#define L2CR_SRAM_ZERO 0x00000000 /* L2SRAM zero size */ -#define L2CR_SRAM_FULL 0x00010000 /* L2SRAM full size */ -#define L2CR_SRAM_HALF 0x00020000 /* L2SRAM half size */ -#define L2CR_SRAM_TWO_HALFS 0x00030000 /* L2SRAM two half sizes */ -#define L2CR_SRAM_QUART 0x00040000 /* L2SRAM one quarter size */ -#define L2CR_SRAM_TWO_QUARTS 0x00050000 /* L2SRAM two quarter size */ -#define L2CR_SRAM_EIGHTH 0x00060000 /* L2SRAM one eighth size */ -#define L2CR_SRAM_TWO_EIGHTH 0x00070000 /* L2SRAM two eighth size */ - -#define L2SRAM_OPTIMAL_SZ_SHIFT 0x00000003 /* Optimum size for L2SRAM */ - -#define L2SRAM_BAR_MSK_LO18 0xFFFFC000 /* Lower 18 bits */ -#define L2SRAM_BARE_MSK_HI4 0x0000000F /* Upper 4 bits */ - -enum cache_sram_lock_ways { - LOCK_WAYS_ZERO, - LOCK_WAYS_EIGHTH, - LOCK_WAYS_TWO_EIGHTH, - LOCK_WAYS_HALF = 4, - LOCK_WAYS_FULL = 8, -}; - -struct mpc85xx_l2ctlr { - u32 ctl; /* 0x000 - L2 control */ - u8 res1[0xC]; - u32 ewar0; /* 0x010 - External write address 0 */ - u32 ewarea0; /* 0x014 - External write address extended 0 */ - u32 ewcr0; /* 0x018 - External write ctrl */ - u8 res2[4]; - u32 ewar1; /* 0x020 - External write address 1 */ - u32 ewarea1; /* 0x024 - External write address extended 1 */ - u32 ewcr1; /* 0x028 - External write ctrl 1 */ - u8 res3[4]; - u32 ewar2; /* 0x030 - External write address 2 */ - u32 ewarea2; /* 0x034 - External write address extended 2 */ - u32 ewcr2; /* 0x038 - External write ctrl 2 */ - u8 res4[4]; - u32 ewar3; /* 0x040 - External write address 3 */ - u32 ewarea3; /* 0x044 - External write address extended 3 */ - u32 ewcr3; /* 0x048 - External write ctrl 3 */ - u8 res5[0xB4]; - u32 srbar0; /* 0x100 - SRAM base address 0 */ - u32 srbarea0; /* 0x104 - SRAM base addr reg ext address 0 */ - u32 srbar1; /* 0x108 - SRAM base address 1 */ - u32 srbarea1; /* 0x10C - SRAM base addr reg ext address 1 */ - u8 res6[0xCF0]; - u32 errinjhi; /* 0xE00 - Error injection mask high */ - u32 errinjlo; /* 0xE04 - Error injection mask low */ - u32 errinjctl; /* 0xE08 - Error injection tag/ecc control */ - u8 res7[0x14]; - u32 captdatahi; /* 0xE20 - Error data high capture */ - u32 captdatalo; /* 0xE24 - Error data low capture */ - u32 captecc; /* 0xE28 - Error syndrome */ - u8 res8[0x14]; - u32 errdet; /* 0xE40 - Error detect */ - u32 errdis; /* 0xE44 - Error disable */ - u32 errinten; /* 0xE48 - Error interrupt enable */ - u32 errattr; /* 0xE4c - Error attribute capture */ - u32 erradrrl; /* 0xE50 - Error address capture low */ - u32 erradrrh; /* 0xE54 - Error address capture high */ - u32 errctl; /* 0xE58 - Error control */ - u8 res9[0x1A4]; -}; - -struct sram_parameters { - unsigned int sram_size; - phys_addr_t sram_offset; -}; - -extern int instantiate_cache_sram(struct platform_device *dev, - struct sram_parameters sram_params); -extern void remove_cache_sram(struct platform_device *dev); - -#endif /* __FSL_85XX_CACHE_CTLR_H__ */ diff --git a/arch/powerpc/sysdev/fsl_85xx_cache_sram.c b/arch/powerpc/sysdev/fsl_85xx_cache_sram.c deleted file mode 100644 index a3aeaa5f0f1b..000000000000 --- a/arch/powerpc/sysdev/fsl_85xx_cache_sram.c +++ /dev/null @@ -1,147 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-or-later -/* - * Copyright 2009-2010 Freescale Semiconductor, Inc. - * - * Simple memory allocator abstraction for QorIQ (P1/P2) based Cache-SRAM - * - * Author: Vivek Mahajan <vivek.mahajan@freescale.com> - * - * This file is derived from the original work done - * by Sylvain Munaut for the Bestcomm SRAM allocator. - */ - -#include <linux/kernel.h> -#include <linux/export.h> -#include <linux/slab.h> -#include <linux/err.h> -#include <linux/of_platform.h> -#include <linux/pgtable.h> -#include <asm/fsl_85xx_cache_sram.h> - -#include "fsl_85xx_cache_ctlr.h" - -struct mpc85xx_cache_sram *cache_sram; - -void *mpc85xx_cache_sram_alloc(unsigned int size, - phys_addr_t *phys, unsigned int align) -{ - unsigned long offset; - unsigned long flags; - - if (unlikely(cache_sram == NULL)) - return NULL; - - if (!size || (size > cache_sram->size) || (align > cache_sram->size)) { - pr_err("%s(): size(=%x) or align(=%x) zero or too big\n", - __func__, size, align); - return NULL; - } - - if ((align & (align - 1)) || align <= 1) { - pr_err("%s(): align(=%x) must be power of two and >1\n", - __func__, align); - return NULL; - } - - spin_lock_irqsave(&cache_sram->lock, flags); - offset = rh_alloc_align(cache_sram->rh, size, align, NULL); - spin_unlock_irqrestore(&cache_sram->lock, flags); - - if (IS_ERR_VALUE(offset)) - return NULL; - - *phys = cache_sram->base_phys + offset; - - return (unsigned char *)cache_sram->base_virt + offset; -} -EXPORT_SYMBOL(mpc85xx_cache_sram_alloc); - -void mpc85xx_cache_sram_free(void *ptr) -{ - unsigned long flags; - BUG_ON(!ptr); - - spin_lock_irqsave(&cache_sram->lock, flags); - rh_free(cache_sram->rh, ptr - cache_sram->base_virt); - spin_unlock_irqrestore(&cache_sram->lock, flags); -} -EXPORT_SYMBOL(mpc85xx_cache_sram_free); - -int __init instantiate_cache_sram(struct platform_device *dev, - struct sram_parameters sram_params) -{ - int ret = 0; - - if (cache_sram) { - dev_err(&dev->dev, "Already initialized cache-sram\n"); - return -EBUSY; - } - - cache_sram = kzalloc(sizeof(struct mpc85xx_cache_sram), GFP_KERNEL); - if (!cache_sram) { - dev_err(&dev->dev, "Out of memory for cache_sram structure\n"); - return -ENOMEM; - } - - cache_sram->base_phys = sram_params.sram_offset; - cache_sram->size = sram_params.sram_size; - - if (!request_mem_region(cache_sram->base_phys, cache_sram->size, - "fsl_85xx_cache_sram")) { - dev_err(&dev->dev, "%pOF: request memory failed\n", - dev->dev.of_node); - ret = -ENXIO; - goto out_free; - } - - cache_sram->base_virt = ioremap_coherent(cache_sram->base_phys, - cache_sram->size); - if (!cache_sram->base_virt) { - dev_err(&dev->dev, "%pOF: ioremap_coherent failed\n", - dev->dev.of_node); - ret = -ENOMEM; - goto out_release; - } - - cache_sram->rh = rh_create(sizeof(unsigned int)); - if (IS_ERR(cache_sram->rh)) { - dev_err(&dev->dev, "%pOF: Unable to create remote heap\n", - dev->dev.of_node); - ret = PTR_ERR(cache_sram->rh); - goto out_unmap; - } - - rh_attach_region(cache_sram->rh, 0, cache_sram->size); - spin_lock_init(&cache_sram->lock); - - dev_info(&dev->dev, "[base:0x%llx, size:0x%x] configured and loaded\n", - (unsigned long long)cache_sram->base_phys, cache_sram->size); - - return 0; - -out_unmap: - iounmap(cache_sram->base_virt); - -out_release: - release_mem_region(cache_sram->base_phys, cache_sram->size); - -out_free: - kfree(cache_sram); - return ret; -} - -void remove_cache_sram(struct platform_device *dev) -{ - BUG_ON(!cache_sram); - - rh_detach_region(cache_sram->rh, 0, cache_sram->size); - rh_destroy(cache_sram->rh); - - iounmap(cache_sram->base_virt); - release_mem_region(cache_sram->base_phys, cache_sram->size); - - kfree(cache_sram); - cache_sram = NULL; - - dev_info(&dev->dev, "MPC85xx Cache-SRAM driver unloaded\n"); -} diff --git a/arch/powerpc/sysdev/fsl_85xx_l2ctlr.c b/arch/powerpc/sysdev/fsl_85xx_l2ctlr.c deleted file mode 100644 index 2d0af0c517bb..000000000000 --- a/arch/powerpc/sysdev/fsl_85xx_l2ctlr.c +++ /dev/null @@ -1,216 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-or-later -/* - * Copyright 2009-2010, 2012 Freescale Semiconductor, Inc. - * - * QorIQ (P1/P2) L2 controller init for Cache-SRAM instantiation - * - * Author: Vivek Mahajan <vivek.mahajan@freescale.com> - */ - -#include <linux/kernel.h> -#include <linux/module.h> -#include <linux/of_platform.h> -#include <asm/io.h> - -#include "fsl_85xx_cache_ctlr.h" - -static char *sram_size; -static char *sram_offset; -struct mpc85xx_l2ctlr __iomem *l2ctlr; - -static int get_cache_sram_params(struct sram_parameters *sram_params) -{ - unsigned long long addr; - unsigned int size; - - if (!sram_size || (kstrtouint(sram_size, 0, &size) < 0)) - return -EINVAL; - - if (!sram_offset || (kstrtoull(sram_offset, 0, &addr) < 0)) - return -EINVAL; - - sram_params->sram_offset = addr; - sram_params->sram_size = size; - - return 0; -} - -static int __init get_size_from_cmdline(char *str) -{ - if (!str) - return 0; - - sram_size = str; - return 1; -} - -static int __init get_offset_from_cmdline(char *str) -{ - if (!str) - return 0; - - sram_offset = str; - return 1; -} - -__setup("cache-sram-size=", get_size_from_cmdline); -__setup("cache-sram-offset=", get_offset_from_cmdline); - -static int mpc85xx_l2ctlr_of_probe(struct platform_device *dev) -{ - long rval; - unsigned int rem; - unsigned char ways; - const unsigned int *prop; - unsigned int l2cache_size; - struct sram_parameters sram_params; - - if (!dev->dev.of_node) { - dev_err(&dev->dev, "Device's OF-node is NULL\n"); - return -EINVAL; - } - - prop = of_get_property(dev->dev.of_node, "cache-size", NULL); - if (!prop) { - dev_err(&dev->dev, "Missing L2 cache-size\n"); - return -EINVAL; - } - l2cache_size = *prop; - - if (get_cache_sram_params(&sram_params)) - return 0; /* fall back to L2 cache only */ - - rem = l2cache_size % sram_params.sram_size; - ways = LOCK_WAYS_FULL * sram_params.sram_size / l2cache_size; - if (rem || (ways & (ways - 1))) { - dev_err(&dev->dev, "Illegal cache-sram-size in command line\n"); - return -EINVAL; - } - - l2ctlr = of_iomap(dev->dev.of_node, 0); - if (!l2ctlr) { - dev_err(&dev->dev, "Can't map L2 controller\n"); - return -EINVAL; - } - - /* - * Write bits[0-17] to srbar0 - */ - out_be32(&l2ctlr->srbar0, - lower_32_bits(sram_params.sram_offset) & L2SRAM_BAR_MSK_LO18); - - /* - * Write bits[18-21] to srbare0 - */ -#ifdef CONFIG_PHYS_64BIT - out_be32(&l2ctlr->srbarea0, - upper_32_bits(sram_params.sram_offset) & L2SRAM_BARE_MSK_HI4); -#endif - - clrsetbits_be32(&l2ctlr->ctl, L2CR_L2E, L2CR_L2FI); - - switch (ways) { - case LOCK_WAYS_EIGHTH: - setbits32(&l2ctlr->ctl, - L2CR_L2E | L2CR_L2FI | L2CR_SRAM_EIGHTH); - break; - - case LOCK_WAYS_TWO_EIGHTH: - setbits32(&l2ctlr->ctl, - L2CR_L2E | L2CR_L2FI | L2CR_SRAM_QUART); - break; - - case LOCK_WAYS_HALF: - setbits32(&l2ctlr->ctl, - L2CR_L2E | L2CR_L2FI | L2CR_SRAM_HALF); - break; - - case LOCK_WAYS_FULL: - default: - setbits32(&l2ctlr->ctl, - L2CR_L2E | L2CR_L2FI | L2CR_SRAM_FULL); - break; - } - eieio(); - - rval = instantiate_cache_sram(dev, sram_params); - if (rval < 0) { - dev_err(&dev->dev, "Can't instantiate Cache-SRAM\n"); - iounmap(l2ctlr); - return -EINVAL; - } - - return 0; -} - -static int mpc85xx_l2ctlr_of_remove(struct platform_device *dev) -{ - BUG_ON(!l2ctlr); - - iounmap(l2ctlr); - remove_cache_sram(dev); - dev_info(&dev->dev, "MPC85xx L2 controller unloaded\n"); - - return 0; -} - -static const struct of_device_id mpc85xx_l2ctlr_of_match[] = { - { - .compatible = "fsl,p2020-l2-cache-controller", - }, - { - .compatible = "fsl,p2010-l2-cache-controller", - }, - { - .compatible = "fsl,p1020-l2-cache-controller", - }, - { - .compatible = "fsl,p1011-l2-cache-controller", - }, - { - .compatible = "fsl,p1013-l2-cache-controller", - }, - { - .compatible = "fsl,p1022-l2-cache-controller", - }, - { - .compatible = "fsl,mpc8548-l2-cache-controller", - }, - { .compatible = "fsl,mpc8544-l2-cache-controller",}, - { .compatible = "fsl,mpc8572-l2-cache-controller",}, - { .compatible = "fsl,mpc8536-l2-cache-controller",}, - { .compatible = "fsl,p1021-l2-cache-controller",}, - { .compatible = "fsl,p1012-l2-cache-controller",}, - { .compatible = "fsl,p1025-l2-cache-controller",}, - { .compatible = "fsl,p1016-l2-cache-controller",}, - { .compatible = "fsl,p1024-l2-cache-controller",}, - { .compatible = "fsl,p1015-l2-cache-controller",}, - { .compatible = "fsl,p1010-l2-cache-controller",}, - { .compatible = "fsl,bsc9131-l2-cache-controller",}, - {}, -}; - -static struct platform_driver mpc85xx_l2ctlr_of_platform_driver = { - .driver = { - .name = "fsl-l2ctlr", - .of_match_table = mpc85xx_l2ctlr_of_match, - }, - .probe = mpc85xx_l2ctlr_of_probe, - .remove = mpc85xx_l2ctlr_of_remove, -}; - -static __init int mpc85xx_l2ctlr_of_init(void) -{ - return platform_driver_register(&mpc85xx_l2ctlr_of_platform_driver); -} - -static void __exit mpc85xx_l2ctlr_of_exit(void) -{ - platform_driver_unregister(&mpc85xx_l2ctlr_of_platform_driver); -} - -subsys_initcall(mpc85xx_l2ctlr_of_init); -module_exit(mpc85xx_l2ctlr_of_exit); - -MODULE_DESCRIPTION("Freescale MPC85xx L2 controller init"); -MODULE_LICENSE("GPL v2"); |