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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-23 17:30:02 +00:00
iommu/exynos: Fix build errors
Commit 25e9d28d92 (ARM: EXYNOS: remove system mmu initialization from
exynos tree) removed arch/arm/mach-exynos/mach/sysmmu.h header without
removing remaining use of it from exynos-iommu driver, thus causing a
compilation error.
This patch fixes the error by removing respective include line
from exynos-iommu.c.
Use of __pa and __va macro is changed to virt_to_phys and phys_to_virt
which are recommended in driver code. printk formatting of physical
address is also fixed to %pa.
Also System MMU driver is changed to control only a single instance
of System MMU at a time. Since a single instance of System MMU has only
a single clock descriptor for its clock gating, single address range
for control registers, there is no need to obtain two or more clock
descriptors and ioremaped region.
CC: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Cho KyongHo <pullip.cho@samsung.com>
Signed-off-by: Shaik Ameer Basha <shaik.ameer@samsung.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
This commit is contained in:
Cho KyongHo
Joerg Roedel
parent
d6d211db37
commit
7222e8db2d
1 changed files with 91 additions and 176 deletions
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@ -29,8 +29,6 @@
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#include <asm/cacheflush.h>
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#include <asm/pgtable.h>
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#include <mach/sysmmu.h>
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/* We does not consider super section mapping (16MB) */
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#define SECT_ORDER 20
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#define LPAGE_ORDER 16
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@ -108,7 +106,8 @@ static unsigned long *section_entry(unsigned long *pgtable, unsigned long iova)
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static unsigned long *page_entry(unsigned long *sent, unsigned long iova)
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{
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return (unsigned long *)__va(lv2table_base(sent)) + lv2ent_offset(iova);
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return (unsigned long *)phys_to_virt(
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lv2table_base(sent)) + lv2ent_offset(iova);
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}
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enum exynos_sysmmu_inttype {
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@ -132,7 +131,7 @@ enum exynos_sysmmu_inttype {
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* translated. This is 0 if @itype is SYSMMU_BUSERROR.
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*/
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typedef int (*sysmmu_fault_handler_t)(enum exynos_sysmmu_inttype itype,
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unsigned long pgtable_base, unsigned long fault_addr);
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phys_addr_t pgtable_base, unsigned long fault_addr);
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static unsigned short fault_reg_offset[SYSMMU_FAULTS_NUM] = {
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REG_PAGE_FAULT_ADDR,
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@ -170,14 +169,13 @@ struct sysmmu_drvdata {
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struct device *sysmmu; /* System MMU's device descriptor */
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struct device *dev; /* Owner of system MMU */
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char *dbgname;
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int nsfrs;
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void __iomem **sfrbases;
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struct clk *clk[2];
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void __iomem *sfrbase;
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struct clk *clk;
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int activations;
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rwlock_t lock;
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struct iommu_domain *domain;
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sysmmu_fault_handler_t fault_handler;
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unsigned long pgtable;
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phys_addr_t pgtable;
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};
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static bool set_sysmmu_active(struct sysmmu_drvdata *data)
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@ -266,17 +264,17 @@ void exynos_sysmmu_set_fault_handler(struct device *dev,
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}
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static int default_fault_handler(enum exynos_sysmmu_inttype itype,
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unsigned long pgtable_base, unsigned long fault_addr)
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phys_addr_t pgtable_base, unsigned long fault_addr)
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{
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unsigned long *ent;
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if ((itype >= SYSMMU_FAULTS_NUM) || (itype < SYSMMU_PAGEFAULT))
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itype = SYSMMU_FAULT_UNKNOWN;
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pr_err("%s occurred at 0x%lx(Page table base: 0x%lx)\n",
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sysmmu_fault_name[itype], fault_addr, pgtable_base);
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pr_err("%s occurred at 0x%lx(Page table base: %pa)\n",
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sysmmu_fault_name[itype], fault_addr, &pgtable_base);
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ent = section_entry(__va(pgtable_base), fault_addr);
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ent = section_entry(phys_to_virt(pgtable_base), fault_addr);
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pr_err("\tLv1 entry: 0x%lx\n", *ent);
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if (lv1ent_page(ent)) {
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@ -295,56 +293,39 @@ static irqreturn_t exynos_sysmmu_irq(int irq, void *dev_id)
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{
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/* SYSMMU is in blocked when interrupt occurred. */
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struct sysmmu_drvdata *data = dev_id;
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struct resource *irqres;
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struct platform_device *pdev;
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enum exynos_sysmmu_inttype itype;
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unsigned long addr = -1;
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int i, ret = -ENOSYS;
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int ret = -ENOSYS;
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read_lock(&data->lock);
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WARN_ON(!is_sysmmu_active(data));
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pdev = to_platform_device(data->sysmmu);
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for (i = 0; i < (pdev->num_resources / 2); i++) {
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irqres = platform_get_resource(pdev, IORESOURCE_IRQ, i);
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if (irqres && ((int)irqres->start == irq))
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break;
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}
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if (i == pdev->num_resources) {
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itype = (enum exynos_sysmmu_inttype)
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__ffs(__raw_readl(data->sfrbase + REG_INT_STATUS));
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if (WARN_ON(!((itype >= 0) && (itype < SYSMMU_FAULT_UNKNOWN))))
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itype = SYSMMU_FAULT_UNKNOWN;
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} else {
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itype = (enum exynos_sysmmu_inttype)
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__ffs(__raw_readl(data->sfrbases[i] + REG_INT_STATUS));
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if (WARN_ON(!((itype >= 0) && (itype < SYSMMU_FAULT_UNKNOWN))))
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itype = SYSMMU_FAULT_UNKNOWN;
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else
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addr = __raw_readl(
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data->sfrbases[i] + fault_reg_offset[itype]);
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}
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else
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addr = __raw_readl(data->sfrbase + fault_reg_offset[itype]);
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if (data->domain)
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ret = report_iommu_fault(data->domain, data->dev,
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addr, itype);
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ret = report_iommu_fault(data->domain, data->dev, addr, itype);
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if ((ret == -ENOSYS) && data->fault_handler) {
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unsigned long base = data->pgtable;
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if (itype != SYSMMU_FAULT_UNKNOWN)
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base = __raw_readl(
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data->sfrbases[i] + REG_PT_BASE_ADDR);
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base = __raw_readl(data->sfrbase + REG_PT_BASE_ADDR);
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ret = data->fault_handler(itype, base, addr);
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}
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if (!ret && (itype != SYSMMU_FAULT_UNKNOWN))
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__raw_writel(1 << itype, data->sfrbases[i] + REG_INT_CLEAR);
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__raw_writel(1 << itype, data->sfrbase + REG_INT_CLEAR);
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else
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dev_dbg(data->sysmmu, "(%s) %s is not handled.\n",
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data->dbgname, sysmmu_fault_name[itype]);
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if (itype != SYSMMU_FAULT_UNKNOWN)
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sysmmu_unblock(data->sfrbases[i]);
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sysmmu_unblock(data->sfrbase);
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read_unlock(&data->lock);
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@ -355,20 +336,16 @@ static bool __exynos_sysmmu_disable(struct sysmmu_drvdata *data)
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{
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unsigned long flags;
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bool disabled = false;
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int i;
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write_lock_irqsave(&data->lock, flags);
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if (!set_sysmmu_inactive(data))
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goto finish;
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for (i = 0; i < data->nsfrs; i++)
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__raw_writel(CTRL_DISABLE, data->sfrbases[i] + REG_MMU_CTRL);
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__raw_writel(CTRL_DISABLE, data->sfrbase + REG_MMU_CTRL);
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if (data->clk[1])
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clk_disable(data->clk[1]);
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if (data->clk[0])
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clk_disable(data->clk[0]);
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if (!IS_ERR(data->clk))
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clk_disable(data->clk);
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disabled = true;
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data->pgtable = 0;
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@ -394,7 +371,7 @@ static bool __exynos_sysmmu_disable(struct sysmmu_drvdata *data)
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static int __exynos_sysmmu_enable(struct sysmmu_drvdata *data,
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unsigned long pgtable, struct iommu_domain *domain)
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{
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int i, ret = 0;
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int ret = 0;
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unsigned long flags;
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write_lock_irqsave(&data->lock, flags);
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@ -411,27 +388,22 @@ static int __exynos_sysmmu_enable(struct sysmmu_drvdata *data,
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goto finish;
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}
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if (data->clk[0])
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clk_enable(data->clk[0]);
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if (data->clk[1])
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clk_enable(data->clk[1]);
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if (!IS_ERR(data->clk))
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clk_enable(data->clk);
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data->pgtable = pgtable;
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for (i = 0; i < data->nsfrs; i++) {
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__sysmmu_set_ptbase(data->sfrbases[i], pgtable);
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if ((readl(data->sfrbases[i] + REG_MMU_VERSION) >> 28) == 3) {
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/* System MMU version is 3.x */
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__raw_writel((1 << 12) | (2 << 28),
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data->sfrbases[i] + REG_MMU_CFG);
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__sysmmu_set_prefbuf(data->sfrbases[i], 0, -1, 0);
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__sysmmu_set_prefbuf(data->sfrbases[i], 0, -1, 1);
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}
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__raw_writel(CTRL_ENABLE, data->sfrbases[i] + REG_MMU_CTRL);
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__sysmmu_set_ptbase(data->sfrbase, pgtable);
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if ((readl(data->sfrbase + REG_MMU_VERSION) >> 28) == 3) {
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/* System MMU version is 3.x */
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__raw_writel((1 << 12) | (2 << 28),
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data->sfrbase + REG_MMU_CFG);
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__sysmmu_set_prefbuf(data->sfrbase, 0, -1, 0);
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__sysmmu_set_prefbuf(data->sfrbase, 0, -1, 1);
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}
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__raw_writel(CTRL_ENABLE, data->sfrbase + REG_MMU_CTRL);
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data->domain = domain;
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dev_dbg(data->sysmmu, "(%s) Enabled\n", data->dbgname);
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@ -458,7 +430,7 @@ int exynos_sysmmu_enable(struct device *dev, unsigned long pgtable)
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if (WARN_ON(ret < 0)) {
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pm_runtime_put(data->sysmmu);
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dev_err(data->sysmmu,
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"(%s) Already enabled with page table %#lx\n",
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"(%s) Already enabled with page table %#x\n",
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data->dbgname, data->pgtable);
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} else {
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data->dev = dev;
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@ -486,13 +458,10 @@ static void sysmmu_tlb_invalidate_entry(struct device *dev, unsigned long iova)
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read_lock_irqsave(&data->lock, flags);
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if (is_sysmmu_active(data)) {
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int i;
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for (i = 0; i < data->nsfrs; i++) {
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if (sysmmu_block(data->sfrbases[i])) {
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__sysmmu_tlb_invalidate_entry(
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data->sfrbases[i], iova);
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sysmmu_unblock(data->sfrbases[i]);
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}
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if (sysmmu_block(data->sfrbase)) {
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__sysmmu_tlb_invalidate_entry(
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data->sfrbase, iova);
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sysmmu_unblock(data->sfrbase);
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}
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} else {
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dev_dbg(data->sysmmu,
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@ -511,12 +480,9 @@ void exynos_sysmmu_tlb_invalidate(struct device *dev)
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read_lock_irqsave(&data->lock, flags);
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if (is_sysmmu_active(data)) {
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int i;
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for (i = 0; i < data->nsfrs; i++) {
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if (sysmmu_block(data->sfrbases[i])) {
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__sysmmu_tlb_invalidate(data->sfrbases[i]);
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sysmmu_unblock(data->sfrbases[i]);
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}
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if (sysmmu_block(data->sfrbase)) {
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__sysmmu_tlb_invalidate(data->sfrbase);
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sysmmu_unblock(data->sfrbase);
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}
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} else {
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dev_dbg(data->sysmmu,
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@ -529,11 +495,10 @@ void exynos_sysmmu_tlb_invalidate(struct device *dev)
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static int exynos_sysmmu_probe(struct platform_device *pdev)
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{
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int i, ret;
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struct device *dev;
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int ret;
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struct device *dev = &pdev->dev;
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struct sysmmu_drvdata *data;
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dev = &pdev->dev;
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struct resource *res;
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data = kzalloc(sizeof(*data), GFP_KERNEL);
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if (!data) {
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@ -542,82 +507,37 @@ static int exynos_sysmmu_probe(struct platform_device *pdev)
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goto err_alloc;
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}
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ret = dev_set_drvdata(dev, data);
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res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
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if (!res) {
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dev_dbg(dev, "Unable to find IOMEM region\n");
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ret = -ENOENT;
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goto err_init;
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}
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data->sfrbase = ioremap(res->start, resource_size(res));
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if (!data->sfrbase) {
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dev_dbg(dev, "Unable to map IOMEM @ PA:%#x\n", res->start);
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ret = -ENOENT;
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goto err_res;
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}
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ret = platform_get_irq(pdev, 0);
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if (ret <= 0) {
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dev_dbg(dev, "Unable to find IRQ resource\n");
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goto err_irq;
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}
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ret = request_irq(ret, exynos_sysmmu_irq, 0,
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dev_name(dev), data);
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if (ret) {
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dev_dbg(dev, "Unabled to initialize driver data\n");
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goto err_init;
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}
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data->nsfrs = pdev->num_resources / 2;
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data->sfrbases = kmalloc(sizeof(*data->sfrbases) * data->nsfrs,
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GFP_KERNEL);
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if (data->sfrbases == NULL) {
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dev_dbg(dev, "Not enough memory\n");
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ret = -ENOMEM;
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goto err_init;
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}
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for (i = 0; i < data->nsfrs; i++) {
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struct resource *res;
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res = platform_get_resource(pdev, IORESOURCE_MEM, i);
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if (!res) {
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dev_dbg(dev, "Unable to find IOMEM region\n");
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ret = -ENOENT;
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goto err_res;
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}
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data->sfrbases[i] = ioremap(res->start, resource_size(res));
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if (!data->sfrbases[i]) {
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dev_dbg(dev, "Unable to map IOMEM @ PA:%#x\n",
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res->start);
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ret = -ENOENT;
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goto err_res;
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}
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}
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for (i = 0; i < data->nsfrs; i++) {
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ret = platform_get_irq(pdev, i);
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if (ret <= 0) {
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dev_dbg(dev, "Unable to find IRQ resource\n");
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goto err_irq;
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}
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ret = request_irq(ret, exynos_sysmmu_irq, 0,
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dev_name(dev), data);
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if (ret) {
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dev_dbg(dev, "Unabled to register interrupt handler\n");
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goto err_irq;
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}
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dev_dbg(dev, "Unabled to register interrupt handler\n");
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goto err_irq;
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}
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if (dev_get_platdata(dev)) {
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char *deli, *beg;
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struct sysmmu_platform_data *platdata = dev_get_platdata(dev);
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beg = platdata->clockname;
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for (deli = beg; (*deli != '\0') && (*deli != ','); deli++)
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/* NOTHING */;
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if (*deli == '\0')
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deli = NULL;
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else
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*deli = '\0';
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data->clk[0] = clk_get(dev, beg);
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if (IS_ERR(data->clk[0])) {
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data->clk[0] = NULL;
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data->clk = clk_get(dev, "sysmmu");
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if (IS_ERR(data->clk))
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dev_dbg(dev, "No clock descriptor registered\n");
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}
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if (data->clk[0] && deli) {
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*deli = ',';
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data->clk[1] = clk_get(dev, deli + 1);
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if (IS_ERR(data->clk[1]))
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data->clk[1] = NULL;
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}
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data->dbgname = platdata->dbgname;
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}
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data->sysmmu = dev;
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@ -626,22 +546,17 @@ static int exynos_sysmmu_probe(struct platform_device *pdev)
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__set_fault_handler(data, &default_fault_handler);
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platform_set_drvdata(pdev, data);
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if (dev->parent)
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pm_runtime_enable(dev);
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dev_dbg(dev, "(%s) Initialized\n", data->dbgname);
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return 0;
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err_irq:
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while (i-- > 0) {
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int irq;
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irq = platform_get_irq(pdev, i);
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free_irq(irq, data);
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}
|
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free_irq(platform_get_irq(pdev, 0), data);
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err_res:
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while (data->nsfrs-- > 0)
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iounmap(data->sfrbases[data->nsfrs]);
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kfree(data->sfrbases);
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iounmap(data->sfrbase);
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err_init:
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kfree(data);
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err_alloc:
|
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|
|
@ -722,7 +637,7 @@ static void exynos_iommu_domain_destroy(struct iommu_domain *domain)
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|
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for (i = 0; i < NUM_LV1ENTRIES; i++)
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if (lv1ent_page(priv->pgtable + i))
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kfree(__va(lv2table_base(priv->pgtable + i)));
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kfree(phys_to_virt(lv2table_base(priv->pgtable + i)));
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|
||||
free_pages((unsigned long)priv->pgtable, 2);
|
||||
free_pages((unsigned long)priv->lv2entcnt, 1);
|
||||
|
|
@ -735,6 +650,7 @@ static int exynos_iommu_attach_device(struct iommu_domain *domain,
|
|||
{
|
||||
struct sysmmu_drvdata *data = dev_get_drvdata(dev->archdata.iommu);
|
||||
struct exynos_iommu_domain *priv = domain->priv;
|
||||
phys_addr_t pagetable = virt_to_phys(priv->pgtable);
|
||||
unsigned long flags;
|
||||
int ret;
|
||||
|
||||
|
|
@ -746,7 +662,7 @@ static int exynos_iommu_attach_device(struct iommu_domain *domain,
|
|||
|
||||
spin_lock_irqsave(&priv->lock, flags);
|
||||
|
||||
ret = __exynos_sysmmu_enable(data, __pa(priv->pgtable), domain);
|
||||
ret = __exynos_sysmmu_enable(data, pagetable, domain);
|
||||
|
||||
if (ret == 0) {
|
||||
/* 'data->node' must not be appeared in priv->clients */
|
||||
|
|
@ -758,17 +674,15 @@ static int exynos_iommu_attach_device(struct iommu_domain *domain,
|
|||
spin_unlock_irqrestore(&priv->lock, flags);
|
||||
|
||||
if (ret < 0) {
|
||||
dev_err(dev, "%s: Failed to attach IOMMU with pgtable %#lx\n",
|
||||
__func__, __pa(priv->pgtable));
|
||||
dev_err(dev, "%s: Failed to attach IOMMU with pgtable %pa\n",
|
||||
__func__, &pagetable);
|
||||
pm_runtime_put(data->sysmmu);
|
||||
} else if (ret > 0) {
|
||||
dev_dbg(dev, "%s: IOMMU with pgtable 0x%lx already attached\n",
|
||||
__func__, __pa(priv->pgtable));
|
||||
} else {
|
||||
dev_dbg(dev, "%s: Attached new IOMMU with pgtable 0x%lx\n",
|
||||
__func__, __pa(priv->pgtable));
|
||||
return ret;
|
||||
}
|
||||
|
||||
dev_dbg(dev, "%s: Attached IOMMU with pgtable %pa %s\n",
|
||||
__func__, &pagetable, (ret == 0) ? "" : ", again");
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
|
|
@ -778,6 +692,7 @@ static void exynos_iommu_detach_device(struct iommu_domain *domain,
|
|||
struct sysmmu_drvdata *data = dev_get_drvdata(dev->archdata.iommu);
|
||||
struct exynos_iommu_domain *priv = domain->priv;
|
||||
struct list_head *pos;
|
||||
phys_addr_t pagetable = virt_to_phys(priv->pgtable);
|
||||
unsigned long flags;
|
||||
bool found = false;
|
||||
|
||||
|
|
@ -794,13 +709,13 @@ static void exynos_iommu_detach_device(struct iommu_domain *domain,
|
|||
goto finish;
|
||||
|
||||
if (__exynos_sysmmu_disable(data)) {
|
||||
dev_dbg(dev, "%s: Detached IOMMU with pgtable %#lx\n",
|
||||
__func__, __pa(priv->pgtable));
|
||||
dev_dbg(dev, "%s: Detached IOMMU with pgtable %pa\n",
|
||||
__func__, &pagetable);
|
||||
list_del_init(&data->node);
|
||||
|
||||
} else {
|
||||
dev_dbg(dev, "%s: Detaching IOMMU with pgtable %#lx delayed",
|
||||
__func__, __pa(priv->pgtable));
|
||||
dev_dbg(dev, "%s: Detaching IOMMU with pgtable %pa delayed",
|
||||
__func__, &pagetable);
|
||||
}
|
||||
|
||||
finish:
|
||||
|
|
@ -821,7 +736,7 @@ static unsigned long *alloc_lv2entry(unsigned long *sent, unsigned long iova,
|
|||
if (!pent)
|
||||
return NULL;
|
||||
|
||||
*sent = mk_lv1ent_page(__pa(pent));
|
||||
*sent = mk_lv1ent_page(virt_to_phys(pent));
|
||||
*pgcounter = NUM_LV2ENTRIES;
|
||||
pgtable_flush(pent, pent + NUM_LV2ENTRIES);
|
||||
pgtable_flush(sent, sent + 1);
|
||||
|
|
|
|||
Loading…
Reference in a new issue