From ae50dc4874c5b73dfefeb1d5a9c1adf2c41576fd Mon Sep 17 00:00:00 2001 From: Geert Uytterhoeven Date: Fri, 4 Dec 2015 16:58:56 +0100 Subject: [PATCH] iommu/shmobile: Remove unused Renesas IPMMU/IPMMUI driver As of commit 44d88c754e57a6d9 ("ARM: shmobile: Remove legacy SoC code for R-Mobile A1"), the Renesas IPMMU/IPMMUI driver is no longer used. In theory it could still be used on SH-Mobile AG5 and R-Mobile A1 SoCs, but that requires adding DT support to the driver, which is not planned. Remove the driver, it can be resurrected from git history when needed. Signed-off-by: Geert Uytterhoeven Acked-by: Simon Horman Signed-off-by: Joerg Roedel --- drivers/iommu/Kconfig | 75 ------ drivers/iommu/Makefile | 2 - drivers/iommu/shmobile-iommu.c | 402 --------------------------------- drivers/iommu/shmobile-ipmmu.c | 129 ----------- drivers/iommu/shmobile-ipmmu.h | 34 --- 5 files changed, 642 deletions(-) delete mode 100644 drivers/iommu/shmobile-iommu.c delete mode 100644 drivers/iommu/shmobile-ipmmu.c delete mode 100644 drivers/iommu/shmobile-ipmmu.h diff --git a/drivers/iommu/Kconfig b/drivers/iommu/Kconfig index b9094e9da537..a1e75cba18e0 100644 --- a/drivers/iommu/Kconfig +++ b/drivers/iommu/Kconfig @@ -263,81 +263,6 @@ config EXYNOS_IOMMU_DEBUG Say N unless you need kernel log message for IOMMU debugging. -config SHMOBILE_IPMMU - bool - -config SHMOBILE_IPMMU_TLB - bool - -config SHMOBILE_IOMMU - bool "IOMMU for Renesas IPMMU/IPMMUI" - default n - depends on ARM && MMU - depends on ARCH_SHMOBILE || COMPILE_TEST - select IOMMU_API - select ARM_DMA_USE_IOMMU - select SHMOBILE_IPMMU - select SHMOBILE_IPMMU_TLB - help - Support for Renesas IPMMU/IPMMUI. This option enables - remapping of DMA memory accesses from all of the IP blocks - on the ICB. - - Warning: Drivers (including userspace drivers of UIO - devices) of the IP blocks on the ICB *must* use addresses - allocated from the IPMMU (iova) for DMA with this option - enabled. - - If unsure, say N. - -choice - prompt "IPMMU/IPMMUI address space size" - default SHMOBILE_IOMMU_ADDRSIZE_2048MB - depends on SHMOBILE_IOMMU - help - This option sets IPMMU/IPMMUI address space size by - adjusting the 1st level page table size. The page table size - is calculated as follows: - - page table size = number of page table entries * 4 bytes - number of page table entries = address space size / 1 MiB - - For example, when the address space size is 2048 MiB, the - 1st level page table size is 8192 bytes. - - config SHMOBILE_IOMMU_ADDRSIZE_2048MB - bool "2 GiB" - - config SHMOBILE_IOMMU_ADDRSIZE_1024MB - bool "1 GiB" - - config SHMOBILE_IOMMU_ADDRSIZE_512MB - bool "512 MiB" - - config SHMOBILE_IOMMU_ADDRSIZE_256MB - bool "256 MiB" - - config SHMOBILE_IOMMU_ADDRSIZE_128MB - bool "128 MiB" - - config SHMOBILE_IOMMU_ADDRSIZE_64MB - bool "64 MiB" - - config SHMOBILE_IOMMU_ADDRSIZE_32MB - bool "32 MiB" - -endchoice - -config SHMOBILE_IOMMU_L1SIZE - int - default 8192 if SHMOBILE_IOMMU_ADDRSIZE_2048MB - default 4096 if SHMOBILE_IOMMU_ADDRSIZE_1024MB - default 2048 if SHMOBILE_IOMMU_ADDRSIZE_512MB - default 1024 if SHMOBILE_IOMMU_ADDRSIZE_256MB - default 512 if SHMOBILE_IOMMU_ADDRSIZE_128MB - default 256 if SHMOBILE_IOMMU_ADDRSIZE_64MB - default 128 if SHMOBILE_IOMMU_ADDRSIZE_32MB - config IPMMU_VMSA bool "Renesas VMSA-compatible IPMMU" depends on ARM_LPAE diff --git a/drivers/iommu/Makefile b/drivers/iommu/Makefile index 68faca02225d..42fc0c25cf1a 100644 --- a/drivers/iommu/Makefile +++ b/drivers/iommu/Makefile @@ -22,7 +22,5 @@ obj-$(CONFIG_ROCKCHIP_IOMMU) += rockchip-iommu.o obj-$(CONFIG_TEGRA_IOMMU_GART) += tegra-gart.o obj-$(CONFIG_TEGRA_IOMMU_SMMU) += tegra-smmu.o obj-$(CONFIG_EXYNOS_IOMMU) += exynos-iommu.o -obj-$(CONFIG_SHMOBILE_IOMMU) += shmobile-iommu.o -obj-$(CONFIG_SHMOBILE_IPMMU) += shmobile-ipmmu.o obj-$(CONFIG_FSL_PAMU) += fsl_pamu.o fsl_pamu_domain.o obj-$(CONFIG_S390_IOMMU) += s390-iommu.o diff --git a/drivers/iommu/shmobile-iommu.c b/drivers/iommu/shmobile-iommu.c deleted file mode 100644 index a0287519a1d4..000000000000 --- a/drivers/iommu/shmobile-iommu.c +++ /dev/null @@ -1,402 +0,0 @@ -/* - * IOMMU for IPMMU/IPMMUI - * Copyright (C) 2012 Hideki EIRAKU - * - * 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; version 2 of the License. - */ - -#include -#include -#include -#include -#include -#include -#include -#include "shmobile-ipmmu.h" - -#define L1_SIZE CONFIG_SHMOBILE_IOMMU_L1SIZE -#define L1_LEN (L1_SIZE / 4) -#define L1_ALIGN L1_SIZE -#define L2_SIZE SZ_1K -#define L2_LEN (L2_SIZE / 4) -#define L2_ALIGN L2_SIZE - -struct shmobile_iommu_domain_pgtable { - uint32_t *pgtable; - dma_addr_t handle; -}; - -struct shmobile_iommu_archdata { - struct list_head attached_list; - struct dma_iommu_mapping *iommu_mapping; - spinlock_t attach_lock; - struct shmobile_iommu_domain *attached; - int num_attached_devices; - struct shmobile_ipmmu *ipmmu; -}; - -struct shmobile_iommu_domain { - struct shmobile_iommu_domain_pgtable l1, l2[L1_LEN]; - spinlock_t map_lock; - spinlock_t attached_list_lock; - struct list_head attached_list; - struct iommu_domain domain; -}; - -static struct shmobile_iommu_archdata *ipmmu_archdata; -static struct kmem_cache *l1cache, *l2cache; - -static struct shmobile_iommu_domain *to_sh_domain(struct iommu_domain *dom) -{ - return container_of(dom, struct shmobile_iommu_domain, domain); -} - -static int pgtable_alloc(struct shmobile_iommu_domain_pgtable *pgtable, - struct kmem_cache *cache, size_t size) -{ - pgtable->pgtable = kmem_cache_zalloc(cache, GFP_ATOMIC); - if (!pgtable->pgtable) - return -ENOMEM; - pgtable->handle = dma_map_single(NULL, pgtable->pgtable, size, - DMA_TO_DEVICE); - return 0; -} - -static void pgtable_free(struct shmobile_iommu_domain_pgtable *pgtable, - struct kmem_cache *cache, size_t size) -{ - dma_unmap_single(NULL, pgtable->handle, size, DMA_TO_DEVICE); - kmem_cache_free(cache, pgtable->pgtable); -} - -static uint32_t pgtable_read(struct shmobile_iommu_domain_pgtable *pgtable, - unsigned int index) -{ - return pgtable->pgtable[index]; -} - -static void pgtable_write(struct shmobile_iommu_domain_pgtable *pgtable, - unsigned int index, unsigned int count, uint32_t val) -{ - unsigned int i; - - for (i = 0; i < count; i++) - pgtable->pgtable[index + i] = val; - dma_sync_single_for_device(NULL, pgtable->handle + index * sizeof(val), - sizeof(val) * count, DMA_TO_DEVICE); -} - -static struct iommu_domain *shmobile_iommu_domain_alloc(unsigned type) -{ - struct shmobile_iommu_domain *sh_domain; - int i, ret; - - if (type != IOMMU_DOMAIN_UNMANAGED) - return NULL; - - sh_domain = kzalloc(sizeof(*sh_domain), GFP_KERNEL); - if (!sh_domain) - return NULL; - ret = pgtable_alloc(&sh_domain->l1, l1cache, L1_SIZE); - if (ret < 0) { - kfree(sh_domain); - return NULL; - } - for (i = 0; i < L1_LEN; i++) - sh_domain->l2[i].pgtable = NULL; - spin_lock_init(&sh_domain->map_lock); - spin_lock_init(&sh_domain->attached_list_lock); - INIT_LIST_HEAD(&sh_domain->attached_list); - return &sh_domain->domain; -} - -static void shmobile_iommu_domain_free(struct iommu_domain *domain) -{ - struct shmobile_iommu_domain *sh_domain = to_sh_domain(domain); - int i; - - for (i = 0; i < L1_LEN; i++) { - if (sh_domain->l2[i].pgtable) - pgtable_free(&sh_domain->l2[i], l2cache, L2_SIZE); - } - pgtable_free(&sh_domain->l1, l1cache, L1_SIZE); - kfree(sh_domain); -} - -static int shmobile_iommu_attach_device(struct iommu_domain *domain, - struct device *dev) -{ - struct shmobile_iommu_archdata *archdata = dev->archdata.iommu; - struct shmobile_iommu_domain *sh_domain = to_sh_domain(domain); - int ret = -EBUSY; - - if (!archdata) - return -ENODEV; - spin_lock(&sh_domain->attached_list_lock); - spin_lock(&archdata->attach_lock); - if (archdata->attached != sh_domain) { - if (archdata->attached) - goto err; - ipmmu_tlb_set(archdata->ipmmu, sh_domain->l1.handle, L1_SIZE, - 0); - ipmmu_tlb_flush(archdata->ipmmu); - archdata->attached = sh_domain; - archdata->num_attached_devices = 0; - list_add(&archdata->attached_list, &sh_domain->attached_list); - } - archdata->num_attached_devices++; - ret = 0; -err: - spin_unlock(&archdata->attach_lock); - spin_unlock(&sh_domain->attached_list_lock); - return ret; -} - -static void shmobile_iommu_detach_device(struct iommu_domain *domain, - struct device *dev) -{ - struct shmobile_iommu_archdata *archdata = dev->archdata.iommu; - struct shmobile_iommu_domain *sh_domain = to_sh_domain(domain); - - if (!archdata) - return; - spin_lock(&sh_domain->attached_list_lock); - spin_lock(&archdata->attach_lock); - archdata->num_attached_devices--; - if (!archdata->num_attached_devices) { - ipmmu_tlb_set(archdata->ipmmu, 0, 0, 0); - ipmmu_tlb_flush(archdata->ipmmu); - archdata->attached = NULL; - list_del(&archdata->attached_list); - } - spin_unlock(&archdata->attach_lock); - spin_unlock(&sh_domain->attached_list_lock); -} - -static void domain_tlb_flush(struct shmobile_iommu_domain *sh_domain) -{ - struct shmobile_iommu_archdata *archdata; - - spin_lock(&sh_domain->attached_list_lock); - list_for_each_entry(archdata, &sh_domain->attached_list, attached_list) - ipmmu_tlb_flush(archdata->ipmmu); - spin_unlock(&sh_domain->attached_list_lock); -} - -static int l2alloc(struct shmobile_iommu_domain *sh_domain, - unsigned int l1index) -{ - int ret; - - if (!sh_domain->l2[l1index].pgtable) { - ret = pgtable_alloc(&sh_domain->l2[l1index], l2cache, L2_SIZE); - if (ret < 0) - return ret; - } - pgtable_write(&sh_domain->l1, l1index, 1, - sh_domain->l2[l1index].handle | 0x1); - return 0; -} - -static void l2realfree(struct shmobile_iommu_domain_pgtable *l2) -{ - if (l2->pgtable) - pgtable_free(l2, l2cache, L2_SIZE); -} - -static void l2free(struct shmobile_iommu_domain *sh_domain, - unsigned int l1index, - struct shmobile_iommu_domain_pgtable *l2) -{ - pgtable_write(&sh_domain->l1, l1index, 1, 0); - if (sh_domain->l2[l1index].pgtable) { - *l2 = sh_domain->l2[l1index]; - sh_domain->l2[l1index].pgtable = NULL; - } -} - -static int shmobile_iommu_map(struct iommu_domain *domain, unsigned long iova, - phys_addr_t paddr, size_t size, int prot) -{ - struct shmobile_iommu_domain_pgtable l2 = { .pgtable = NULL }; - struct shmobile_iommu_domain *sh_domain = to_sh_domain(domain); - unsigned int l1index, l2index; - int ret; - - l1index = iova >> 20; - switch (size) { - case SZ_4K: - l2index = (iova >> 12) & 0xff; - spin_lock(&sh_domain->map_lock); - ret = l2alloc(sh_domain, l1index); - if (!ret) - pgtable_write(&sh_domain->l2[l1index], l2index, 1, - paddr | 0xff2); - spin_unlock(&sh_domain->map_lock); - break; - case SZ_64K: - l2index = (iova >> 12) & 0xf0; - spin_lock(&sh_domain->map_lock); - ret = l2alloc(sh_domain, l1index); - if (!ret) - pgtable_write(&sh_domain->l2[l1index], l2index, 0x10, - paddr | 0xff1); - spin_unlock(&sh_domain->map_lock); - break; - case SZ_1M: - spin_lock(&sh_domain->map_lock); - l2free(sh_domain, l1index, &l2); - pgtable_write(&sh_domain->l1, l1index, 1, paddr | 0xc02); - spin_unlock(&sh_domain->map_lock); - ret = 0; - break; - default: - ret = -EINVAL; - } - if (!ret) - domain_tlb_flush(sh_domain); - l2realfree(&l2); - return ret; -} - -static size_t shmobile_iommu_unmap(struct iommu_domain *domain, - unsigned long iova, size_t size) -{ - struct shmobile_iommu_domain_pgtable l2 = { .pgtable = NULL }; - struct shmobile_iommu_domain *sh_domain = to_sh_domain(domain); - unsigned int l1index, l2index; - uint32_t l2entry = 0; - size_t ret = 0; - - l1index = iova >> 20; - if (!(iova & 0xfffff) && size >= SZ_1M) { - spin_lock(&sh_domain->map_lock); - l2free(sh_domain, l1index, &l2); - spin_unlock(&sh_domain->map_lock); - ret = SZ_1M; - goto done; - } - l2index = (iova >> 12) & 0xff; - spin_lock(&sh_domain->map_lock); - if (sh_domain->l2[l1index].pgtable) - l2entry = pgtable_read(&sh_domain->l2[l1index], l2index); - switch (l2entry & 3) { - case 1: - if (l2index & 0xf) - break; - pgtable_write(&sh_domain->l2[l1index], l2index, 0x10, 0); - ret = SZ_64K; - break; - case 2: - pgtable_write(&sh_domain->l2[l1index], l2index, 1, 0); - ret = SZ_4K; - break; - } - spin_unlock(&sh_domain->map_lock); -done: - if (ret) - domain_tlb_flush(sh_domain); - l2realfree(&l2); - return ret; -} - -static phys_addr_t shmobile_iommu_iova_to_phys(struct iommu_domain *domain, - dma_addr_t iova) -{ - struct shmobile_iommu_domain *sh_domain = to_sh_domain(domain); - uint32_t l1entry = 0, l2entry = 0; - unsigned int l1index, l2index; - - l1index = iova >> 20; - l2index = (iova >> 12) & 0xff; - spin_lock(&sh_domain->map_lock); - if (sh_domain->l2[l1index].pgtable) - l2entry = pgtable_read(&sh_domain->l2[l1index], l2index); - else - l1entry = pgtable_read(&sh_domain->l1, l1index); - spin_unlock(&sh_domain->map_lock); - switch (l2entry & 3) { - case 1: - return (l2entry & ~0xffff) | (iova & 0xffff); - case 2: - return (l2entry & ~0xfff) | (iova & 0xfff); - default: - if ((l1entry & 3) == 2) - return (l1entry & ~0xfffff) | (iova & 0xfffff); - return 0; - } -} - -static int find_dev_name(struct shmobile_ipmmu *ipmmu, const char *dev_name) -{ - unsigned int i, n = ipmmu->num_dev_names; - - for (i = 0; i < n; i++) { - if (strcmp(ipmmu->dev_names[i], dev_name) == 0) - return 1; - } - return 0; -} - -static int shmobile_iommu_add_device(struct device *dev) -{ - struct shmobile_iommu_archdata *archdata = ipmmu_archdata; - struct dma_iommu_mapping *mapping; - - if (!find_dev_name(archdata->ipmmu, dev_name(dev))) - return 0; - mapping = archdata->iommu_mapping; - if (!mapping) { - mapping = arm_iommu_create_mapping(&platform_bus_type, 0, - L1_LEN << 20); - if (IS_ERR(mapping)) - return PTR_ERR(mapping); - archdata->iommu_mapping = mapping; - } - dev->archdata.iommu = archdata; - if (arm_iommu_attach_device(dev, mapping)) - pr_err("arm_iommu_attach_device failed\n"); - return 0; -} - -static const struct iommu_ops shmobile_iommu_ops = { - .domain_alloc = shmobile_iommu_domain_alloc, - .domain_free = shmobile_iommu_domain_free, - .attach_dev = shmobile_iommu_attach_device, - .detach_dev = shmobile_iommu_detach_device, - .map = shmobile_iommu_map, - .unmap = shmobile_iommu_unmap, - .map_sg = default_iommu_map_sg, - .iova_to_phys = shmobile_iommu_iova_to_phys, - .add_device = shmobile_iommu_add_device, - .pgsize_bitmap = SZ_1M | SZ_64K | SZ_4K, -}; - -int ipmmu_iommu_init(struct shmobile_ipmmu *ipmmu) -{ - static struct shmobile_iommu_archdata *archdata; - - l1cache = kmem_cache_create("shmobile-iommu-pgtable1", L1_SIZE, - L1_ALIGN, SLAB_HWCACHE_ALIGN, NULL); - if (!l1cache) - return -ENOMEM; - l2cache = kmem_cache_create("shmobile-iommu-pgtable2", L2_SIZE, - L2_ALIGN, SLAB_HWCACHE_ALIGN, NULL); - if (!l2cache) { - kmem_cache_destroy(l1cache); - return -ENOMEM; - } - archdata = kzalloc(sizeof(*archdata), GFP_KERNEL); - if (!archdata) { - kmem_cache_destroy(l1cache); - kmem_cache_destroy(l2cache); - return -ENOMEM; - } - spin_lock_init(&archdata->attach_lock); - archdata->ipmmu = ipmmu; - ipmmu_archdata = archdata; - bus_set_iommu(&platform_bus_type, &shmobile_iommu_ops); - return 0; -} diff --git a/drivers/iommu/shmobile-ipmmu.c b/drivers/iommu/shmobile-ipmmu.c deleted file mode 100644 index 951651a9746b..000000000000 --- a/drivers/iommu/shmobile-ipmmu.c +++ /dev/null @@ -1,129 +0,0 @@ -/* - * IPMMU/IPMMUI - * Copyright (C) 2012 Hideki EIRAKU - * - * 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; version 2 of the License. - */ - -#include -#include -#include -#include -#include -#include -#include "shmobile-ipmmu.h" - -#define IMCTR1 0x000 -#define IMCTR2 0x004 -#define IMASID 0x010 -#define IMTTBR 0x014 -#define IMTTBCR 0x018 - -#define IMCTR1_TLBEN (1 << 0) -#define IMCTR1_FLUSH (1 << 1) - -static void ipmmu_reg_write(struct shmobile_ipmmu *ipmmu, unsigned long reg_off, - unsigned long data) -{ - iowrite32(data, ipmmu->ipmmu_base + reg_off); -} - -void ipmmu_tlb_flush(struct shmobile_ipmmu *ipmmu) -{ - if (!ipmmu) - return; - - spin_lock(&ipmmu->flush_lock); - if (ipmmu->tlb_enabled) - ipmmu_reg_write(ipmmu, IMCTR1, IMCTR1_FLUSH | IMCTR1_TLBEN); - else - ipmmu_reg_write(ipmmu, IMCTR1, IMCTR1_FLUSH); - spin_unlock(&ipmmu->flush_lock); -} - -void ipmmu_tlb_set(struct shmobile_ipmmu *ipmmu, unsigned long phys, int size, - int asid) -{ - if (!ipmmu) - return; - - spin_lock(&ipmmu->flush_lock); - switch (size) { - default: - ipmmu->tlb_enabled = 0; - break; - case 0x2000: - ipmmu_reg_write(ipmmu, IMTTBCR, 1); - ipmmu->tlb_enabled = 1; - break; - case 0x1000: - ipmmu_reg_write(ipmmu, IMTTBCR, 2); - ipmmu->tlb_enabled = 1; - break; - case 0x800: - ipmmu_reg_write(ipmmu, IMTTBCR, 3); - ipmmu->tlb_enabled = 1; - break; - case 0x400: - ipmmu_reg_write(ipmmu, IMTTBCR, 4); - ipmmu->tlb_enabled = 1; - break; - case 0x200: - ipmmu_reg_write(ipmmu, IMTTBCR, 5); - ipmmu->tlb_enabled = 1; - break; - case 0x100: - ipmmu_reg_write(ipmmu, IMTTBCR, 6); - ipmmu->tlb_enabled = 1; - break; - case 0x80: - ipmmu_reg_write(ipmmu, IMTTBCR, 7); - ipmmu->tlb_enabled = 1; - break; - } - ipmmu_reg_write(ipmmu, IMTTBR, phys); - ipmmu_reg_write(ipmmu, IMASID, asid); - spin_unlock(&ipmmu->flush_lock); -} - -static int ipmmu_probe(struct platform_device *pdev) -{ - struct shmobile_ipmmu *ipmmu; - struct resource *res; - struct shmobile_ipmmu_platform_data *pdata = pdev->dev.platform_data; - - ipmmu = devm_kzalloc(&pdev->dev, sizeof(*ipmmu), GFP_KERNEL); - if (!ipmmu) { - dev_err(&pdev->dev, "cannot allocate device data\n"); - return -ENOMEM; - } - spin_lock_init(&ipmmu->flush_lock); - ipmmu->dev = &pdev->dev; - - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - ipmmu->ipmmu_base = devm_ioremap_resource(&pdev->dev, res); - if (IS_ERR(ipmmu->ipmmu_base)) - return PTR_ERR(ipmmu->ipmmu_base); - - ipmmu->dev_names = pdata->dev_names; - ipmmu->num_dev_names = pdata->num_dev_names; - platform_set_drvdata(pdev, ipmmu); - ipmmu_reg_write(ipmmu, IMCTR1, 0x0); /* disable TLB */ - ipmmu_reg_write(ipmmu, IMCTR2, 0x0); /* disable PMB */ - return ipmmu_iommu_init(ipmmu); -} - -static struct platform_driver ipmmu_driver = { - .probe = ipmmu_probe, - .driver = { - .name = "ipmmu", - }, -}; - -static int __init ipmmu_init(void) -{ - return platform_driver_register(&ipmmu_driver); -} -subsys_initcall(ipmmu_init); diff --git a/drivers/iommu/shmobile-ipmmu.h b/drivers/iommu/shmobile-ipmmu.h deleted file mode 100644 index 9524743ca1fb..000000000000 --- a/drivers/iommu/shmobile-ipmmu.h +++ /dev/null @@ -1,34 +0,0 @@ -/* shmobile-ipmmu.h - * - * Copyright (C) 2012 Hideki EIRAKU - * - * 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; version 2 of the License. - */ - -#ifndef __SHMOBILE_IPMMU_H__ -#define __SHMOBILE_IPMMU_H__ - -struct shmobile_ipmmu { - struct device *dev; - void __iomem *ipmmu_base; - int tlb_enabled; - spinlock_t flush_lock; - const char * const *dev_names; - unsigned int num_dev_names; -}; - -#ifdef CONFIG_SHMOBILE_IPMMU_TLB -void ipmmu_tlb_flush(struct shmobile_ipmmu *ipmmu); -void ipmmu_tlb_set(struct shmobile_ipmmu *ipmmu, unsigned long phys, int size, - int asid); -int ipmmu_iommu_init(struct shmobile_ipmmu *ipmmu); -#else -static inline int ipmmu_iommu_init(struct shmobile_ipmmu *ipmmu) -{ - return -EINVAL; -} -#endif - -#endif /* __SHMOBILE_IPMMU_H__ */ -- 2.20.1