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Diffstat (limited to 'arch/arm/plat-s5p/sysmmu.c')
-rw-r--r--arch/arm/plat-s5p/sysmmu.c326
1 files changed, 0 insertions, 326 deletions
diff --git a/arch/arm/plat-s5p/sysmmu.c b/arch/arm/plat-s5p/sysmmu.c
deleted file mode 100644
index ffe8a48bc3c..00000000000
--- a/arch/arm/plat-s5p/sysmmu.c
+++ /dev/null
@@ -1,326 +0,0 @@
-/* linux/arch/arm/plat-s5p/sysmmu.c
- *
- * Copyright (c) 2010 Samsung Electronics Co., Ltd.
- * http://www.samsung.com
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#include <linux/io.h>
-#include <linux/interrupt.h>
-#include <linux/platform_device.h>
-
-#include <mach/map.h>
-#include <mach/regs-sysmmu.h>
-#include <mach/sysmmu.h>
-
-struct sysmmu_controller s5p_sysmmu_cntlrs[S5P_SYSMMU_TOTAL_IPNUM];
-
-void s5p_sysmmu_register(struct sysmmu_controller *sysmmuconp)
-{
- unsigned int reg_mmu_ctrl;
- unsigned int reg_mmu_status;
- unsigned int reg_pt_base_addr;
- unsigned int reg_int_status;
- unsigned int reg_page_ft_addr;
-
- reg_int_status = __raw_readl(sysmmuconp->regs + S5P_INT_STATUS);
- reg_mmu_ctrl = __raw_readl(sysmmuconp->regs + S5P_MMU_CTRL);
- reg_mmu_status = __raw_readl(sysmmuconp->regs + S5P_MMU_STATUS);
- reg_pt_base_addr = __raw_readl(sysmmuconp->regs + S5P_PT_BASE_ADDR);
- reg_page_ft_addr = __raw_readl(sysmmuconp->regs + S5P_PAGE_FAULT_ADDR);
-
- printk(KERN_INFO "%s: ips:%s\n", __func__, sysmmuconp->name);
- printk(KERN_INFO "%s: MMU_CTRL:0x%X, ", __func__, reg_mmu_ctrl);
- printk(KERN_INFO "MMU_STATUS:0x%X, PT_BASE_ADDR:0x%X\n", reg_mmu_status, reg_pt_base_addr);
- printk(KERN_INFO "%s: INT_STATUS:0x%X, PAGE_FAULT_ADDR:0x%X\n", __func__, reg_int_status, reg_page_ft_addr);
-
- switch (reg_int_status & 0xFF) {
- case 0x1:
- printk(KERN_INFO "%s: Page fault\n", __func__);
- printk(KERN_INFO "%s: Virtual address causing last page fault or bus error : 0x%x\n", __func__ , reg_page_ft_addr);
- break;
- case 0x2:
- printk(KERN_INFO "%s: AR multi-hit fault\n", __func__);
- break;
- case 0x4:
- printk(KERN_INFO "%s: AW multi-hit fault\n", __func__);
- break;
- case 0x8:
- printk(KERN_INFO "%s: Bus error\n", __func__);
- break;
- case 0x10:
- printk(KERN_INFO "%s: AR Security protection fault\n", __func__);
- break;
- case 0x20:
- printk(KERN_INFO "%s: AR Access protection fault\n", __func__);
- break;
- case 0x40:
- printk(KERN_INFO "%s: AW Security protection fault\n", __func__);
- break;
- case 0x80:
- printk(KERN_INFO "%s: AW Access protection fault\n", __func__);
- break;
- }
-}
-
-static irqreturn_t s5p_sysmmu_irq(int irq, void *dev_id)
-{
- unsigned int i;
- unsigned int reg_int_status;
- struct sysmmu_controller *sysmmuconp;
-
- for (i = 0; i < S5P_SYSMMU_TOTAL_IPNUM; i++) {
- sysmmuconp = &s5p_sysmmu_cntlrs[i];
-
- if (sysmmuconp->enable == true) {
- reg_int_status = __raw_readl(sysmmuconp->regs + S5P_INT_STATUS);
-
- if (reg_int_status & 0xFF)
- s5p_sysmmu_register(sysmmuconp);
- }
- }
- return IRQ_HANDLED;
-}
-
-int s5p_sysmmu_set_tablebase_pgd(sysmmu_ips ips, unsigned long pgd)
-{
- struct sysmmu_controller *sysmmuconp = NULL;
-
- sysmmuconp = &s5p_sysmmu_cntlrs[ips];
-
- if (sysmmuconp == NULL) {
- printk(KERN_ERR "failed to get ip's sysmmu info\n");
- return 1;
- }
-
- /* Set sysmmu page table base address */
- __raw_writel(pgd, sysmmuconp->regs + S5P_PT_BASE_ADDR);
-
- if (s5p_sysmmu_tlb_invalidate(ips) != 0)
- printk(KERN_ERR "failed s5p_sysmmu_tlb_invalidate\n");
-
- return 0;
-}
-
-static int s5p_sysmmu_set_tablebase(sysmmu_ips ips)
-{
- unsigned int pg;
- struct sysmmu_controller *sysmmuconp;
-
- sysmmuconp = &s5p_sysmmu_cntlrs[ips];
-
- if (sysmmuconp == NULL) {
- printk(KERN_ERR "failed to get ip's sysmmu info\n");
- return 1;
- }
-
- __asm__("mrc p15, 0, %0, c2, c0, 0" \
- : "=r" (pg) : : "cc"); \
- pg &= ~0x3fff;
-
- printk(KERN_INFO "%s: CP15 TTBR0 : 0x%x\n", __func__, pg);
-
- /* Set sysmmu page table base address */
- __raw_writel(pg, sysmmuconp->regs + S5P_PT_BASE_ADDR);
-
- return 0;
-}
-
-int s5p_sysmmu_enable(sysmmu_ips ips)
-{
- unsigned int reg;
-
- struct sysmmu_controller *sysmmuconp;
-
- sysmmuconp = &s5p_sysmmu_cntlrs[ips];
-
- if (sysmmuconp == NULL) {
- printk(KERN_ERR "failed to get ip's sysmmu info\n");
- return 1;
- }
-
- s5p_sysmmu_set_tablebase(ips);
-
- /* replacement policy : LRU */
- reg = __raw_readl(sysmmuconp->regs + S5P_MMU_CFG);
- reg |= 0x1;
- __raw_writel(reg, sysmmuconp->regs + S5P_MMU_CFG);
-
- /* Enable interrupt, Enable MMU */
- reg = __raw_readl(sysmmuconp->regs + S5P_MMU_CTRL);
- reg |= (0x1 << 2) | (0x1 << 0);
-
- __raw_writel(reg, sysmmuconp->regs + S5P_MMU_CTRL);
-
- sysmmuconp->enable = true;
-
- return 0;
-}
-
-int s5p_sysmmu_disable(sysmmu_ips ips)
-{
- unsigned int reg;
-
- struct sysmmu_controller *sysmmuconp = NULL;
-
- if (ips > S5P_SYSMMU_TOTAL_IPNUM)
- printk(KERN_ERR "failed to get ips parameter\n");
-
- sysmmuconp = &s5p_sysmmu_cntlrs[ips];
-
- if (sysmmuconp == NULL) {
- printk(KERN_ERR "failed to get ip's sysmmu info\n");
- return 1;
- }
-
- reg = __raw_readl(sysmmuconp->regs + S5P_MMU_CFG);
-
- /* replacement policy : LRU */
- reg |= 0x1;
- __raw_writel(reg, sysmmuconp->regs + S5P_MMU_CFG);
-
- reg = __raw_readl(sysmmuconp->regs + S5P_MMU_CTRL);
-
- /* Disable MMU */
- reg &= ~0x1;
- __raw_writel(reg, sysmmuconp->regs + S5P_MMU_CTRL);
-
- sysmmuconp->enable = false;
-
- return 0;
-}
-
-int s5p_sysmmu_tlb_invalidate(sysmmu_ips ips)
-{
- unsigned int reg;
- struct sysmmu_controller *sysmmuconp = NULL;
-
- sysmmuconp = &s5p_sysmmu_cntlrs[ips];
-
- if (sysmmuconp == NULL) {
- printk(KERN_ERR "failed to get ip's sysmmu info\n");
- return 1;
- }
-
- /* set Block MMU for flush TLB */
- reg = __raw_readl(sysmmuconp->regs + S5P_MMU_CTRL);
- reg |= 0x1 << 1;
- __raw_writel(reg, sysmmuconp->regs + S5P_MMU_CTRL);
-
- /* flush all TLB entry */
- __raw_writel(0x1, sysmmuconp->regs + S5P_MMU_FLUSH);
-
- /* set Un-block MMU after flush TLB */
- reg = __raw_readl(sysmmuconp->regs + S5P_MMU_CTRL);
- reg &= ~(0x1 << 1);
- __raw_writel(reg, sysmmuconp->regs + S5P_MMU_CTRL);
-
- return 0;
-}
-
-static int s5p_sysmmu_probe(struct platform_device *pdev)
-{
- int i;
- int ret;
- struct resource *res;
- struct sysmmu_controller *sysmmuconp;
- sysmmu_ips ips;
-
- for (i = 0; i < S5P_SYSMMU_TOTAL_IPNUM; i++) {
- sysmmuconp = &s5p_sysmmu_cntlrs[i];
- if (sysmmuconp == NULL) {
- printk(KERN_ERR "failed to get ip's sysmmu info\n");
- ret = -ENOENT;
- goto err_res;
- }
-
- sysmmuconp->name = sysmmu_ips_name[i];
-
- res = platform_get_resource(pdev, IORESOURCE_MEM, i);
- if (!res) {
- printk(KERN_ERR "failed to get sysmmu resource\n");
- ret = -ENODEV;
- goto err_res;
- }
-
- sysmmuconp->mem = request_mem_region(res->start,
- ((res->end) - (res->start)) + 1, pdev->name);
- if (!sysmmuconp->mem) {
- pr_err("failed to request sysmmu memory region\n");
- ret = -EBUSY;
- goto err_res;
- }
-
- sysmmuconp->regs = ioremap(res->start, res->end - res->start + 1);
- if (!sysmmuconp->regs) {
- pr_err("failed to sysmmu ioremap\n");
- ret = -ENXIO;
- goto err_reg;
- }
-
- sysmmuconp->irq = platform_get_irq(pdev, i);
- if (sysmmuconp->irq <= 0) {
- pr_err("failed to get sysmmu irq resource\n");
- ret = -ENOENT;
- goto err_map;
- }
-
- ret = request_irq(sysmmuconp->irq, s5p_sysmmu_irq, IRQF_DISABLED, pdev->name, sysmmuconp);
- if (ret) {
- pr_err("failed to request irq\n");
- ret = -ENOENT;
- goto err_map;
- }
-
- ips = (sysmmu_ips)i;
-
- sysmmuconp->ips = ips;
- }
-
- return 0;
-
-err_reg:
- release_mem_region((resource_size_t)sysmmuconp->mem, (resource_size_t)((res->end) - (res->start) + 1));
-err_map:
- iounmap(sysmmuconp->regs);
-err_res:
- return ret;
-}
-
-static int s5p_sysmmu_remove(struct platform_device *pdev)
-{
- return 0;
-}
-int s5p_sysmmu_runtime_suspend(struct device *dev)
-{
- return 0;
-}
-
-int s5p_sysmmu_runtime_resume(struct device *dev)
-{
- return 0;
-}
-
-const struct dev_pm_ops s5p_sysmmu_pm_ops = {
- .runtime_suspend = s5p_sysmmu_runtime_suspend,
- .runtime_resume = s5p_sysmmu_runtime_resume,
-};
-
-static struct platform_driver s5p_sysmmu_driver = {
- .probe = s5p_sysmmu_probe,
- .remove = s5p_sysmmu_remove,
- .driver = {
- .owner = THIS_MODULE,
- .name = "s5p-sysmmu",
- .pm = &s5p_sysmmu_pm_ops,
- }
-};
-
-static int __init s5p_sysmmu_init(void)
-{
- return platform_driver_register(&s5p_sysmmu_driver);
-}
-arch_initcall(s5p_sysmmu_init);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-10 00:18:50 +0000