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-rw-r--r--drivers/iommu/amd_iommu.c275
-rw-r--r--drivers/iommu/amd_iommu_init.c67
-rw-r--r--drivers/iommu/amd_iommu_types.h1
-rw-r--r--drivers/iommu/amd_iommu_v2.c2
-rw-r--r--drivers/iommu/arm-smmu-v3.c63
-rw-r--r--drivers/iommu/arm-smmu.c209
-rw-r--r--drivers/iommu/dma-iommu.c22
-rw-r--r--drivers/iommu/intel-iommu.c2
-rw-r--r--drivers/iommu/intel-svm.c2
-rw-r--r--drivers/iommu/io-pgtable-arm-v7s.c4
-rw-r--r--drivers/iommu/iommu-sysfs.c14
-rw-r--r--drivers/iommu/iommu.c113
-rw-r--r--drivers/iommu/ipmmu-vmsa.c91
-rw-r--r--drivers/iommu/irq_remapping.c1
-rw-r--r--drivers/iommu/msm_iommu.c13
-rw-r--r--drivers/iommu/mtk_iommu.c25
-rw-r--r--drivers/iommu/mtk_iommu_v1.c47
-rw-r--r--drivers/iommu/of_iommu.c16
-rw-r--r--drivers/iommu/omap-iommu-debug.c25
-rw-r--r--drivers/iommu/qcom_iommu.c34
-rw-r--r--drivers/iommu/rockchip-iommu.c13
-rw-r--r--drivers/iommu/tegra-gart.c37
-rw-r--r--drivers/iommu/tegra-smmu.c26
23 files changed, 646 insertions, 456 deletions
diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c
index 1167ff0416cf..49a669b1ce11 100644
--- a/drivers/iommu/amd_iommu.c
+++ b/drivers/iommu/amd_iommu.c
@@ -17,6 +17,8 @@
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
+#define pr_fmt(fmt) "AMD-Vi: " fmt
+
#include <linux/ratelimit.h>
#include <linux/pci.h>
#include <linux/acpi.h>
@@ -279,7 +281,7 @@ static u16 get_alias(struct device *dev)
return pci_alias;
}
- pr_info("AMD-Vi: Using IVRS reported alias %02x:%02x.%d "
+ pr_info("Using IVRS reported alias %02x:%02x.%d "
"for device %s[%04x:%04x], kernel reported alias "
"%02x:%02x.%d\n", PCI_BUS_NUM(ivrs_alias), PCI_SLOT(ivrs_alias),
PCI_FUNC(ivrs_alias), dev_name(dev), pdev->vendor, pdev->device,
@@ -293,7 +295,7 @@ static u16 get_alias(struct device *dev)
if (pci_alias == devid &&
PCI_BUS_NUM(ivrs_alias) == pdev->bus->number) {
pci_add_dma_alias(pdev, ivrs_alias & 0xff);
- pr_info("AMD-Vi: Added PCI DMA alias %02x.%d for %s\n",
+ pr_info("Added PCI DMA alias %02x.%d for %s\n",
PCI_SLOT(ivrs_alias), PCI_FUNC(ivrs_alias),
dev_name(dev));
}
@@ -438,7 +440,14 @@ static int iommu_init_device(struct device *dev)
dev_data->alias = get_alias(dev);
- if (dev_is_pci(dev) && pci_iommuv2_capable(to_pci_dev(dev))) {
+ /*
+ * By default we use passthrough mode for IOMMUv2 capable device.
+ * But if amd_iommu=force_isolation is set (e.g. to debug DMA to
+ * invalid address), we ignore the capability for the device so
+ * it'll be forced to go into translation mode.
+ */
+ if ((iommu_pass_through || !amd_iommu_force_isolation) &&
+ dev_is_pci(dev) && pci_iommuv2_capable(to_pci_dev(dev))) {
struct amd_iommu *iommu;
iommu = amd_iommu_rlookup_table[dev_data->devid];
@@ -513,7 +522,7 @@ static void dump_dte_entry(u16 devid)
int i;
for (i = 0; i < 4; ++i)
- pr_err("AMD-Vi: DTE[%d]: %016llx\n", i,
+ pr_err("DTE[%d]: %016llx\n", i,
amd_iommu_dev_table[devid].data[i]);
}
@@ -523,7 +532,7 @@ static void dump_command(unsigned long phys_addr)
int i;
for (i = 0; i < 4; ++i)
- pr_err("AMD-Vi: CMD[%d]: %08x\n", i, cmd->data[i]);
+ pr_err("CMD[%d]: %08x\n", i, cmd->data[i]);
}
static void amd_iommu_report_page_fault(u16 devid, u16 domain_id,
@@ -538,10 +547,10 @@ static void amd_iommu_report_page_fault(u16 devid, u16 domain_id,
dev_data = get_dev_data(&pdev->dev);
if (dev_data && __ratelimit(&dev_data->rs)) {
- dev_err(&pdev->dev, "AMD-Vi: Event logged [IO_PAGE_FAULT domain=0x%04x address=0x%016llx flags=0x%04x]\n",
+ dev_err(&pdev->dev, "Event logged [IO_PAGE_FAULT domain=0x%04x address=0x%llx flags=0x%04x]\n",
domain_id, address, flags);
} else if (printk_ratelimit()) {
- pr_err("AMD-Vi: Event logged [IO_PAGE_FAULT device=%02x:%02x.%x domain=0x%04x address=0x%016llx flags=0x%04x]\n",
+ pr_err("Event logged [IO_PAGE_FAULT device=%02x:%02x.%x domain=0x%04x address=0x%llx flags=0x%04x]\n",
PCI_BUS_NUM(devid), PCI_SLOT(devid), PCI_FUNC(devid),
domain_id, address, flags);
}
@@ -568,7 +577,7 @@ retry:
if (type == 0) {
/* Did we hit the erratum? */
if (++count == LOOP_TIMEOUT) {
- pr_err("AMD-Vi: No event written to event log\n");
+ pr_err("No event written to event log\n");
return;
}
udelay(1);
@@ -578,43 +587,41 @@ retry:
if (type == EVENT_TYPE_IO_FAULT) {
amd_iommu_report_page_fault(devid, pasid, address, flags);
return;
- } else {
- dev_err(dev, "AMD-Vi: Event logged [");
}
switch (type) {
case EVENT_TYPE_ILL_DEV:
- dev_err(dev, "ILLEGAL_DEV_TABLE_ENTRY device=%02x:%02x.%x pasid=0x%05x address=0x%016llx flags=0x%04x]\n",
+ dev_err(dev, "Event logged [ILLEGAL_DEV_TABLE_ENTRY device=%02x:%02x.%x pasid=0x%05x address=0x%llx flags=0x%04x]\n",
PCI_BUS_NUM(devid), PCI_SLOT(devid), PCI_FUNC(devid),
pasid, address, flags);
dump_dte_entry(devid);
break;
case EVENT_TYPE_DEV_TAB_ERR:
- dev_err(dev, "DEV_TAB_HARDWARE_ERROR device=%02x:%02x.%x "
- "address=0x%016llx flags=0x%04x]\n",
+ dev_err(dev, "Event logged [DEV_TAB_HARDWARE_ERROR device=%02x:%02x.%x "
+ "address=0x%llx flags=0x%04x]\n",
PCI_BUS_NUM(devid), PCI_SLOT(devid), PCI_FUNC(devid),
address, flags);
break;
case EVENT_TYPE_PAGE_TAB_ERR:
- dev_err(dev, "PAGE_TAB_HARDWARE_ERROR device=%02x:%02x.%x domain=0x%04x address=0x%016llx flags=0x%04x]\n",
+ dev_err(dev, "Event logged [PAGE_TAB_HARDWARE_ERROR device=%02x:%02x.%x domain=0x%04x address=0x%llx flags=0x%04x]\n",
PCI_BUS_NUM(devid), PCI_SLOT(devid), PCI_FUNC(devid),
pasid, address, flags);
break;
case EVENT_TYPE_ILL_CMD:
- dev_err(dev, "ILLEGAL_COMMAND_ERROR address=0x%016llx]\n", address);
+ dev_err(dev, "Event logged [ILLEGAL_COMMAND_ERROR address=0x%llx]\n", address);
dump_command(address);
break;
case EVENT_TYPE_CMD_HARD_ERR:
- dev_err(dev, "COMMAND_HARDWARE_ERROR address=0x%016llx flags=0x%04x]\n",
+ dev_err(dev, "Event logged [COMMAND_HARDWARE_ERROR address=0x%llx flags=0x%04x]\n",
address, flags);
break;
case EVENT_TYPE_IOTLB_INV_TO:
- dev_err(dev, "IOTLB_INV_TIMEOUT device=%02x:%02x.%x address=0x%016llx]\n",
+ dev_err(dev, "Event logged [IOTLB_INV_TIMEOUT device=%02x:%02x.%x address=0x%llx]\n",
PCI_BUS_NUM(devid), PCI_SLOT(devid), PCI_FUNC(devid),
address);
break;
case EVENT_TYPE_INV_DEV_REQ:
- dev_err(dev, "INVALID_DEVICE_REQUEST device=%02x:%02x.%x pasid=0x%05x address=0x%016llx flags=0x%04x]\n",
+ dev_err(dev, "Event logged [INVALID_DEVICE_REQUEST device=%02x:%02x.%x pasid=0x%05x address=0x%llx flags=0x%04x]\n",
PCI_BUS_NUM(devid), PCI_SLOT(devid), PCI_FUNC(devid),
pasid, address, flags);
break;
@@ -622,12 +629,12 @@ retry:
pasid = ((event[0] >> 16) & 0xFFFF)
| ((event[1] << 6) & 0xF0000);
tag = event[1] & 0x03FF;
- dev_err(dev, "INVALID_PPR_REQUEST device=%02x:%02x.%x pasid=0x%05x address=0x%016llx flags=0x%04x]\n",
+ dev_err(dev, "Event logged [INVALID_PPR_REQUEST device=%02x:%02x.%x pasid=0x%05x address=0x%llx flags=0x%04x]\n",
PCI_BUS_NUM(devid), PCI_SLOT(devid), PCI_FUNC(devid),
pasid, address, flags);
break;
default:
- dev_err(dev, "UNKNOWN event[0]=0x%08x event[1]=0x%08x event[2]=0x%08x event[3]=0x%08x\n",
+ dev_err(dev, "Event logged [UNKNOWN event[0]=0x%08x event[1]=0x%08x event[2]=0x%08x event[3]=0x%08x\n",
event[0], event[1], event[2], event[3]);
}
@@ -654,7 +661,7 @@ static void iommu_handle_ppr_entry(struct amd_iommu *iommu, u64 *raw)
struct amd_iommu_fault fault;
if (PPR_REQ_TYPE(raw[0]) != PPR_REQ_FAULT) {
- pr_err_ratelimited("AMD-Vi: Unknown PPR request received\n");
+ pr_err_ratelimited("Unknown PPR request received\n");
return;
}
@@ -759,12 +766,12 @@ static void iommu_poll_ga_log(struct amd_iommu *iommu)
if (!iommu_ga_log_notifier)
break;
- pr_debug("AMD-Vi: %s: devid=%#x, ga_tag=%#x\n",
+ pr_debug("%s: devid=%#x, ga_tag=%#x\n",
__func__, GA_DEVID(log_entry),
GA_TAG(log_entry));
if (iommu_ga_log_notifier(GA_TAG(log_entry)) != 0)
- pr_err("AMD-Vi: GA log notifier failed.\n");
+ pr_err("GA log notifier failed.\n");
break;
default:
break;
@@ -789,18 +796,18 @@ irqreturn_t amd_iommu_int_thread(int irq, void *data)
iommu->mmio_base + MMIO_STATUS_OFFSET);
if (status & MMIO_STATUS_EVT_INT_MASK) {
- pr_devel("AMD-Vi: Processing IOMMU Event Log\n");
+ pr_devel("Processing IOMMU Event Log\n");
iommu_poll_events(iommu);
}
if (status & MMIO_STATUS_PPR_INT_MASK) {
- pr_devel("AMD-Vi: Processing IOMMU PPR Log\n");
+ pr_devel("Processing IOMMU PPR Log\n");
iommu_poll_ppr_log(iommu);
}
#ifdef CONFIG_IRQ_REMAP
if (status & MMIO_STATUS_GALOG_INT_MASK) {
- pr_devel("AMD-Vi: Processing IOMMU GA Log\n");
+ pr_devel("Processing IOMMU GA Log\n");
iommu_poll_ga_log(iommu);
}
#endif
@@ -844,7 +851,7 @@ static int wait_on_sem(volatile u64 *sem)
}
if (i == LOOP_TIMEOUT) {
- pr_alert("AMD-Vi: Completion-Wait loop timed out\n");
+ pr_alert("Completion-Wait loop timed out\n");
return -EIO;
}
@@ -1036,7 +1043,7 @@ again:
/* Skip udelay() the first time around */
if (count++) {
if (count == LOOP_TIMEOUT) {
- pr_err("AMD-Vi: Command buffer timeout\n");
+ pr_err("Command buffer timeout\n");
return -EIO;
}
@@ -1317,6 +1324,101 @@ static void domain_flush_devices(struct protection_domain *domain)
*
****************************************************************************/
+static void free_page_list(struct page *freelist)
+{
+ while (freelist != NULL) {
+ unsigned long p = (unsigned long)page_address(freelist);
+ freelist = freelist->freelist;
+ free_page(p);
+ }
+}
+
+static struct page *free_pt_page(unsigned long pt, struct page *freelist)
+{
+ struct page *p = virt_to_page((void *)pt);
+
+ p->freelist = freelist;
+
+ return p;
+}
+
+#define DEFINE_FREE_PT_FN(LVL, FN) \
+static struct page *free_pt_##LVL (unsigned long __pt, struct page *freelist) \
+{ \
+ unsigned long p; \
+ u64 *pt; \
+ int i; \
+ \
+ pt = (u64 *)__pt; \
+ \
+ for (i = 0; i < 512; ++i) { \
+ /* PTE present? */ \
+ if (!IOMMU_PTE_PRESENT(pt[i])) \
+ continue; \
+ \
+ /* Large PTE? */ \
+ if (PM_PTE_LEVEL(pt[i]) == 0 || \
+ PM_PTE_LEVEL(pt[i]) == 7) \
+ continue; \
+ \
+ p = (unsigned long)IOMMU_PTE_PAGE(pt[i]); \
+ freelist = FN(p, freelist); \
+ } \
+ \
+ return free_pt_page((unsigned long)pt, freelist); \
+}
+
+DEFINE_FREE_PT_FN(l2, free_pt_page)
+DEFINE_FREE_PT_FN(l3, free_pt_l2)
+DEFINE_FREE_PT_FN(l4, free_pt_l3)
+DEFINE_FREE_PT_FN(l5, free_pt_l4)
+DEFINE_FREE_PT_FN(l6, free_pt_l5)
+
+static struct page *free_sub_pt(unsigned long root, int mode,
+ struct page *freelist)
+{
+ switch (mode) {
+ case PAGE_MODE_NONE:
+ case PAGE_MODE_7_LEVEL:
+ break;
+ case PAGE_MODE_1_LEVEL:
+ freelist = free_pt_page(root, freelist);
+ break;
+ case PAGE_MODE_2_LEVEL:
+ freelist = free_pt_l2(root, freelist);
+ break;
+ case PAGE_MODE_3_LEVEL:
+ freelist = free_pt_l3(root, freelist);
+ break;
+ case PAGE_MODE_4_LEVEL:
+ freelist = free_pt_l4(root, freelist);
+ break;
+ case PAGE_MODE_5_LEVEL:
+ freelist = free_pt_l5(root, freelist);
+ break;
+ case PAGE_MODE_6_LEVEL:
+ freelist = free_pt_l6(root, freelist);
+ break;
+ default:
+ BUG();
+ }
+
+ return freelist;
+}
+
+static void free_pagetable(struct protection_domain *domain)
+{
+ unsigned long root = (unsigned long)domain->pt_root;
+ struct page *freelist = NULL;
+
+ BUG_ON(domain->mode < PAGE_MODE_NONE ||
+ domain->mode > PAGE_MODE_6_LEVEL);
+
+ free_sub_pt(root, domain->mode, freelist);
+
+ free_page_list(freelist);
+}
+
/*
* This function is used to add another level to an IO page table. Adding
* another level increases the size of the address space by 9 bits to a size up
@@ -1365,10 +1467,13 @@ static u64 *alloc_pte(struct protection_domain *domain,
while (level > end_lvl) {
u64 __pte, __npte;
+ int pte_level;
- __pte = *pte;
+ __pte = *pte;
+ pte_level = PM_PTE_LEVEL(__pte);
- if (!IOMMU_PTE_PRESENT(__pte)) {
+ if (!IOMMU_PTE_PRESENT(__pte) ||
+ pte_level == PAGE_MODE_7_LEVEL) {
page = (u64 *)get_zeroed_page(gfp);
if (!page)
return NULL;
@@ -1376,19 +1481,21 @@ static u64 *alloc_pte(struct protection_domain *domain,
__npte = PM_LEVEL_PDE(level, iommu_virt_to_phys(page));
/* pte could have been changed somewhere. */
- if (cmpxchg64(pte, __pte, __npte) != __pte) {
+ if (cmpxchg64(pte, __pte, __npte) != __pte)
free_page((unsigned long)page);
- continue;
- }
+ else if (pte_level == PAGE_MODE_7_LEVEL)
+ domain->updated = true;
+
+ continue;
}
/* No level skipping support yet */
- if (PM_PTE_LEVEL(*pte) != level)
+ if (pte_level != level)
return NULL;
level -= 1;
- pte = IOMMU_PTE_PAGE(*pte);
+ pte = IOMMU_PTE_PAGE(__pte);
if (pte_page && level == end_lvl)
*pte_page = pte;
@@ -1457,6 +1564,25 @@ static u64 *fetch_pte(struct protection_domain *domain,
return pte;
}
+static struct page *free_clear_pte(u64 *pte, u64 pteval, struct page *freelist)
+{
+ unsigned long pt;
+ int mode;
+
+ while (cmpxchg64(pte, pteval, 0) != pteval) {
+ pr_warn("AMD-Vi: IOMMU pte changed since we read it\n");
+ pteval = *pte;
+ }
+
+ if (!IOMMU_PTE_PRESENT(pteval))
+ return freelist;
+
+ pt = (unsigned long)IOMMU_PTE_PAGE(pteval);
+ mode = IOMMU_PTE_MODE(pteval);
+
+ return free_sub_pt(pt, mode, freelist);
+}
+
/*
* Generic mapping functions. It maps a physical address into a DMA
* address space. It allocates the page table pages if necessary.
@@ -1471,6 +1597,7 @@ static int iommu_map_page(struct protection_domain *dom,
int prot,
gfp_t gfp)
{
+ struct page *freelist = NULL;
u64 __pte, *pte;
int i, count;
@@ -1487,8 +1614,10 @@ static int iommu_map_page(struct protection_domain *dom,
return -ENOMEM;
for (i = 0; i < count; ++i)
- if (IOMMU_PTE_PRESENT(pte[i]))
- return -EBUSY;
+ freelist = free_clear_pte(&pte[i], pte[i], freelist);
+
+ if (freelist != NULL)
+ dom->updated = true;
if (count > 1) {
__pte = PAGE_SIZE_PTE(__sme_set(phys_addr), page_size);
@@ -1506,6 +1635,9 @@ static int iommu_map_page(struct protection_domain *dom,
update_domain(dom);
+ /* Everything flushed out, free pages now */
+ free_page_list(freelist);
+
return 0;
}
@@ -1638,67 +1770,6 @@ static void domain_id_free(int id)
spin_unlock(&pd_bitmap_lock);
}
-#define DEFINE_FREE_PT_FN(LVL, FN) \
-static void free_pt_##LVL (unsigned long __pt) \
-{ \
- unsigned long p; \
- u64 *pt; \
- int i; \
- \
- pt = (u64 *)__pt; \
- \
- for (i = 0; i < 512; ++i) { \
- /* PTE present? */ \
- if (!IOMMU_PTE_PRESENT(pt[i])) \
- continue; \
- \
- /* Large PTE? */ \
- if (PM_PTE_LEVEL(pt[i]) == 0 || \
- PM_PTE_LEVEL(pt[i]) == 7) \
- continue; \
- \
- p = (unsigned long)IOMMU_PTE_PAGE(pt[i]); \
- FN(p); \
- } \
- free_page((unsigned long)pt); \
-}
-
-DEFINE_FREE_PT_FN(l2, free_page)
-DEFINE_FREE_PT_FN(l3, free_pt_l2)
-DEFINE_FREE_PT_FN(l4, free_pt_l3)
-DEFINE_FREE_PT_FN(l5, free_pt_l4)
-DEFINE_FREE_PT_FN(l6, free_pt_l5)
-
-static void free_pagetable(struct protection_domain *domain)
-{
- unsigned long root = (unsigned long)domain->pt_root;
-
- switch (domain->mode) {
- case PAGE_MODE_NONE:
- break;
- case PAGE_MODE_1_LEVEL:
- free_page(root);
- break;
- case PAGE_MODE_2_LEVEL:
- free_pt_l2(root);
- break;
- case PAGE_MODE_3_LEVEL:
- free_pt_l3(root);
- break;
- case PAGE_MODE_4_LEVEL:
- free_pt_l4(root);
- break;
- case PAGE_MODE_5_LEVEL:
- free_pt_l5(root);
- break;
- case PAGE_MODE_6_LEVEL:
- free_pt_l6(root);
- break;
- default:
- BUG();
- }
-}
-
static void free_gcr3_tbl_level1(u64 *tbl)
{
u64 *ptr;
@@ -2790,9 +2861,9 @@ int __init amd_iommu_init_dma_ops(void)
dma_ops = &dma_direct_ops;
if (amd_iommu_unmap_flush)
- pr_info("AMD-Vi: IO/TLB flush on unmap enabled\n");
+ pr_info("IO/TLB flush on unmap enabled\n");
else
- pr_info("AMD-Vi: Lazy IO/TLB flushing enabled\n");
+ pr_info("Lazy IO/TLB flushing enabled\n");
return 0;
@@ -2897,7 +2968,7 @@ static struct iommu_domain *amd_iommu_domain_alloc(unsigned type)
case IOMMU_DOMAIN_DMA:
dma_domain = dma_ops_domain_alloc();
if (!dma_domain) {
- pr_err("AMD-Vi: Failed to allocate\n");
+ pr_err("Failed to allocate\n");
return NULL;
}
pdomain = &dma_domain->domain;
@@ -4318,7 +4389,7 @@ static int amd_ir_set_vcpu_affinity(struct irq_data *data, void *vcpu_info)
* legacy mode. So, we force legacy mode instead.
*/
if (!AMD_IOMMU_GUEST_IR_VAPIC(amd_iommu_guest_ir)) {
- pr_debug("AMD-Vi: %s: Fall back to using intr legacy remap\n",
+ pr_debug("%s: Fall back to using intr legacy remap\n",
__func__);
pi_data->is_guest_mode = false;
}
diff --git a/drivers/iommu/amd_iommu_init.c b/drivers/iommu/amd_iommu_init.c
index bb2cd29e1658..66123b911ec8 100644
--- a/drivers/iommu/amd_iommu_init.c
+++ b/drivers/iommu/amd_iommu_init.c
@@ -17,6 +17,8 @@
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
+#define pr_fmt(fmt) "AMD-Vi: " fmt
+
#include <linux/pci.h>
#include <linux/acpi.h>
#include <linux/list.h>
@@ -443,9 +445,9 @@ static void iommu_disable(struct amd_iommu *iommu)
static u8 __iomem * __init iommu_map_mmio_space(u64 address, u64 end)
{
if (!request_mem_region(address, end, "amd_iommu")) {
- pr_err("AMD-Vi: Can not reserve memory region %llx-%llx for mmio\n",
+ pr_err("Can not reserve memory region %llx-%llx for mmio\n",
address, end);
- pr_err("AMD-Vi: This is a BIOS bug. Please contact your hardware vendor\n");
+ pr_err("This is a BIOS bug. Please contact your hardware vendor\n");
return NULL;
}
@@ -512,7 +514,7 @@ static int __init find_last_devid_from_ivhd(struct ivhd_header *h)
u32 ivhd_size = get_ivhd_header_size(h);
if (!ivhd_size) {
- pr_err("AMD-Vi: Unsupported IVHD type %#x\n", h->type);
+ pr_err("Unsupported IVHD type %#x\n", h->type);
return -EINVAL;
}
@@ -553,7 +555,7 @@ static int __init check_ivrs_checksum(struct acpi_table_header *table)
checksum += p[i];
if (checksum != 0) {
/* ACPI table corrupt */
- pr_err(FW_BUG "AMD-Vi: IVRS invalid checksum\n");
+ pr_err(FW_BUG "IVRS invalid checksum\n");
return -ENODEV;
}
@@ -797,7 +799,8 @@ static int iommu_init_ga_log(struct amd_iommu *iommu)
entry = iommu_virt_to_phys(iommu->ga_log) | GA_LOG_SIZE_512;
memcpy_toio(iommu->mmio_base + MMIO_GA_LOG_BASE_OFFSET,
&entry, sizeof(entry));
- entry = (iommu_virt_to_phys(iommu->ga_log) & 0xFFFFFFFFFFFFFULL) & ~7ULL;
+ entry = (iommu_virt_to_phys(iommu->ga_log_tail) &
+ (BIT_ULL(52)-1)) & ~7ULL;
memcpy_toio(iommu->mmio_base + MMIO_GA_LOG_TAIL_OFFSET,
&entry, sizeof(entry));
writel(0x00, iommu->mmio_base + MMIO_GA_HEAD_OFFSET);
@@ -1027,7 +1030,7 @@ static int __init add_special_device(u8 type, u8 id, u16 *devid, bool cmd_line)
if (!(entry->id == id && entry->cmd_line))
continue;
- pr_info("AMD-Vi: Command-line override present for %s id %d - ignoring\n",
+ pr_info("Command-line override present for %s id %d - ignoring\n",
type == IVHD_SPECIAL_IOAPIC ? "IOAPIC" : "HPET", id);
*devid = entry->devid;
@@ -1060,7 +1063,7 @@ static int __init add_acpi_hid_device(u8 *hid, u8 *uid, u16 *devid,
!entry->cmd_line)
continue;
- pr_info("AMD-Vi: Command-line override for hid:%s uid:%s\n",
+ pr_info("Command-line override for hid:%s uid:%s\n",
hid, uid);
*devid = entry->devid;
return 0;
@@ -1076,7 +1079,7 @@ static int __init add_acpi_hid_device(u8 *hid, u8 *uid, u16 *devid,
entry->cmd_line = cmd_line;
entry->root_devid = (entry->devid & (~0x7));
- pr_info("AMD-Vi:%s, add hid:%s, uid:%s, rdevid:%d\n",
+ pr_info("%s, add hid:%s, uid:%s, rdevid:%d\n",
entry->cmd_line ? "cmd" : "ivrs",
entry->hid, entry->uid, entry->root_devid);
@@ -1172,7 +1175,7 @@ static int __init init_iommu_from_acpi(struct amd_iommu *iommu,
*/
ivhd_size = get_ivhd_header_size(h);
if (!ivhd_size) {
- pr_err("AMD-Vi: Unsupported IVHD type %#x\n", h->type);
+ pr_err("Unsupported IVHD type %#x\n", h->type);
return -EINVAL;
}
@@ -1454,7 +1457,7 @@ static void amd_iommu_erratum_746_workaround(struct amd_iommu *iommu)
pci_write_config_dword(iommu->dev, 0xf0, 0x90 | (1 << 8));
pci_write_config_dword(iommu->dev, 0xf4, value | 0x4);
- pr_info("AMD-Vi: Applying erratum 746 workaround for IOMMU at %s\n",
+ pr_info("Applying erratum 746 workaround for IOMMU at %s\n",
dev_name(&iommu->dev->dev));
/* Clear the enable writing bit */
@@ -1485,7 +1488,7 @@ static void amd_iommu_ats_write_check_workaround(struct amd_iommu *iommu)
/* Set L2_DEBUG_3[AtsIgnoreIWDis] = 1 */
iommu_write_l2(iommu, 0x47, value | BIT(0));
- pr_info("AMD-Vi: Applying ATS write check workaround for IOMMU at %s\n",
+ pr_info("Applying ATS write check workaround for IOMMU at %s\n",
dev_name(&iommu->dev->dev));
}
@@ -1505,7 +1508,7 @@ static int __init init_iommu_one(struct amd_iommu *iommu, struct ivhd_header *h)
iommu->index = amd_iommus_present++;
if (unlikely(iommu->index >= MAX_IOMMUS)) {
- WARN(1, "AMD-Vi: System has more IOMMUs than supported by this driver\n");
+ WARN(1, "System has more IOMMUs than supported by this driver\n");
return -ENOSYS;
}
@@ -1673,12 +1676,12 @@ static void init_iommu_perf_ctr(struct amd_iommu *iommu)
if ((iommu_pc_get_set_reg(iommu, 0, 0, 0, &val, true)) ||
(iommu_pc_get_set_reg(iommu, 0, 0, 0, &val2, false)) ||
(val != val2)) {
- pr_err("AMD-Vi: Unable to write to IOMMU perf counter.\n");
+ pr_err("Unable to write to IOMMU perf counter.\n");
amd_iommu_pc_present = false;
return;
}
- pr_info("AMD-Vi: IOMMU performance counters supported\n");
+ pr_info("IOMMU performance counters supported\n");
val = readl(iommu->mmio_base + MMIO_CNTR_CONF_OFFSET);
iommu->max_banks = (u8) ((val >> 12) & 0x3f);
@@ -1839,11 +1842,11 @@ static void print_iommu_info(void)
for_each_iommu(iommu) {
int i;
- pr_info("AMD-Vi: Found IOMMU at %s cap 0x%hx\n",
+ pr_info("Found IOMMU at %s cap 0x%hx\n",
dev_name(&iommu->dev->dev), iommu->cap_ptr);
if (iommu->cap & (1 << IOMMU_CAP_EFR)) {
- pr_info("AMD-Vi: Extended features (%#llx):\n",
+ pr_info("Extended features (%#llx):\n",
iommu->features);
for (i = 0; i < ARRAY_SIZE(feat_str); ++i) {
if (iommu_feature(iommu, (1ULL << i)))
@@ -1857,11 +1860,11 @@ static void print_iommu_info(void)
}
}
if (irq_remapping_enabled) {
- pr_info("AMD-Vi: Interrupt remapping enabled\n");
+ pr_info("Interrupt remapping enabled\n");
if (AMD_IOMMU_GUEST_IR_VAPIC(amd_iommu_guest_ir))
- pr_info("AMD-Vi: virtual APIC enabled\n");
+ pr_info("Virtual APIC enabled\n");
if (amd_iommu_xt_mode == IRQ_REMAP_X2APIC_MODE)
- pr_info("AMD-Vi: X2APIC enabled\n");
+ pr_info("X2APIC enabled\n");
}
}
@@ -2375,7 +2378,7 @@ static bool __init check_ioapic_information(void)
devid = get_ioapic_devid(id);
if (devid < 0) {
- pr_err("%sAMD-Vi: IOAPIC[%d] not in IVRS table\n",
+ pr_err("%s: IOAPIC[%d] not in IVRS table\n",
fw_bug, id);
ret = false;
} else if (devid == IOAPIC_SB_DEVID) {
@@ -2393,11 +2396,11 @@ static bool __init check_ioapic_information(void)
* when the BIOS is buggy and provides us the wrong
* device id for the IOAPIC in the system.
*/
- pr_err("%sAMD-Vi: No southbridge IOAPIC found\n", fw_bug);
+ pr_err("%s: No southbridge IOAPIC found\n", fw_bug);
}
if (!ret)
- pr_err("AMD-Vi: Disabling interrupt remapping\n");
+ pr_err("Disabling interrupt remapping\n");
return ret;
}
@@ -2452,7 +2455,7 @@ static int __init early_amd_iommu_init(void)
return -ENODEV;
else if (ACPI_FAILURE(status)) {
const char *err = acpi_format_exception(status);
- pr_err("AMD-Vi: IVRS table error: %s\n", err);
+ pr_err("IVRS table error: %s\n", err);
return -EINVAL;
}
@@ -2605,7 +2608,7 @@ static bool detect_ivrs(void)
return false;
else if (ACPI_FAILURE(status)) {
const char *err = acpi_format_exception(status);
- pr_err("AMD-Vi: IVRS table error: %s\n", err);
+ pr_err("IVRS table error: %s\n", err);
return false;
}
@@ -2640,7 +2643,7 @@ static int __init state_next(void)
ret = early_amd_iommu_init();
init_state = ret ? IOMMU_INIT_ERROR : IOMMU_ACPI_FINISHED;
if (init_state == IOMMU_ACPI_FINISHED && amd_iommu_disabled) {
- pr_info("AMD-Vi: AMD IOMMU disabled on kernel command-line\n");
+ pr_info("AMD IOMMU disabled on kernel command-line\n");
free_dma_resources();
free_iommu_resources();
init_state = IOMMU_CMDLINE_DISABLED;
@@ -2787,7 +2790,7 @@ static bool amd_iommu_sme_check(void)
(boot_cpu_data.microcode <= 0x080011ff))
return true;
- pr_notice("AMD-Vi: IOMMU not currently supported when SME is active\n");
+ pr_notice("IOMMU not currently supported when SME is active\n");
return false;
}
@@ -2872,12 +2875,12 @@ static int __init parse_ivrs_ioapic(char *str)
ret = sscanf(str, "[%d]=%x:%x.%x", &id, &bus, &dev, &fn);
if (ret != 4) {
- pr_err("AMD-Vi: Invalid command line: ivrs_ioapic%s\n", str);
+ pr_err("Invalid command line: ivrs_ioapic%s\n", str);
return 1;
}
if (early_ioapic_map_size == EARLY_MAP_SIZE) {
- pr_err("AMD-Vi: Early IOAPIC map overflow - ignoring ivrs_ioapic%s\n",
+ pr_err("Early IOAPIC map overflow - ignoring ivrs_ioapic%s\n",
str);
return 1;
}
@@ -2902,12 +2905,12 @@ static int __init parse_ivrs_hpet(char *str)
ret = sscanf(str, "[%d]=%x:%x.%x", &id, &bus, &dev, &fn);
if (ret != 4) {
- pr_err("AMD-Vi: Invalid command line: ivrs_hpet%s\n", str);
+ pr_err("Invalid command line: ivrs_hpet%s\n", str);
return 1;
}
if (early_hpet_map_size == EARLY_MAP_SIZE) {
- pr_err("AMD-Vi: Early HPET map overflow - ignoring ivrs_hpet%s\n",
+ pr_err("Early HPET map overflow - ignoring ivrs_hpet%s\n",
str);
return 1;
}
@@ -2932,7 +2935,7 @@ static int __init parse_ivrs_acpihid(char *str)
ret = sscanf(str, "[%x:%x.%x]=%s", &bus, &dev, &fn, acpiid);
if (ret != 4) {
- pr_err("AMD-Vi: Invalid command line: ivrs_acpihid(%s)\n", str);
+ pr_err("Invalid command line: ivrs_acpihid(%s)\n", str);
return 1;
}
@@ -2941,7 +2944,7 @@ static int __init parse_ivrs_acpihid(char *str)
uid = p;
if (!hid || !(*hid) || !uid) {
- pr_err("AMD-Vi: Invalid command line: hid or uid\n");
+ pr_err("Invalid command line: hid or uid\n");
return 1;
}
diff --git a/drivers/iommu/amd_iommu_types.h b/drivers/iommu/amd_iommu_types.h
index e2b342e65a7b..eae0741f72dc 100644
--- a/drivers/iommu/amd_iommu_types.h
+++ b/drivers/iommu/amd_iommu_types.h
@@ -269,6 +269,7 @@
#define PAGE_MODE_4_LEVEL 0x04
#define PAGE_MODE_5_LEVEL 0x05
#define PAGE_MODE_6_LEVEL 0x06
+#define PAGE_MODE_7_LEVEL 0x07
#define PM_LEVEL_SHIFT(x) (12 + ((x) * 9))
#define PM_LEVEL_SIZE(x) (((x) < 6) ? \
diff --git a/drivers/iommu/amd_iommu_v2.c b/drivers/iommu/amd_iommu_v2.c
index fd552235bd13..23dae9348ace 100644
--- a/drivers/iommu/amd_iommu_v2.c
+++ b/drivers/iommu/amd_iommu_v2.c
@@ -16,6 +16,8 @@
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
+#define pr_fmt(fmt) "AMD-Vi: " fmt
+
#include <linux/mmu_notifier.h>
#include <linux/amd-iommu.h>
#include <linux/mm_types.h>
diff --git a/drivers/iommu/arm-smmu-v3.c b/drivers/iommu/arm-smmu-v3.c
index 6947ccf26512..0d284029dc73 100644
--- a/drivers/iommu/arm-smmu-v3.c
+++ b/drivers/iommu/arm-smmu-v3.c
@@ -20,7 +20,8 @@
#include <linux/interrupt.h>
#include <linux/iommu.h>
#include <linux/iopoll.h>
-#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/moduleparam.h>
#include <linux/msi.h>
#include <linux/of.h>
#include <linux/of_address.h>
@@ -356,6 +357,10 @@
#define MSI_IOVA_BASE 0x8000000
#define MSI_IOVA_LENGTH 0x100000
+/*
+ * not really modular, but the easiest way to keep compat with existing
+ * bootargs behaviour is to continue using module_param_named here.
+ */
static bool disable_bypass = 1;
module_param_named(disable_bypass, disable_bypass, bool, S_IRUGO);
MODULE_PARM_DESC(disable_bypass,
@@ -576,7 +581,11 @@ struct arm_smmu_device {
struct arm_smmu_strtab_cfg strtab_cfg;
- u32 sync_count;
+ /* Hi16xx adds an extra 32 bits of goodness to its MSI payload */
+ union {
+ u32 sync_count;
+ u64 padding;
+ };
/* IOMMU core code handle */
struct iommu_device iommu;
@@ -675,7 +684,13 @@ static void queue_inc_cons(struct arm_smmu_queue *q)
u32 cons = (Q_WRP(q, q->cons) | Q_IDX(q, q->cons)) + 1;
q->cons = Q_OVF(q, q->cons) | Q_WRP(q, cons) | Q_IDX(q, cons);
- writel(q->cons, q->cons_reg);
+
+ /*
+ * Ensure that all CPU accesses (reads and writes) to the queue
+ * are complete before we update the cons pointer.
+ */
+ mb();
+ writel_relaxed(q->cons, q->cons_reg);
}
static int queue_sync_prod(struct arm_smmu_queue *q)
@@ -828,7 +843,13 @@ static int arm_smmu_cmdq_build_cmd(u64 *cmd, struct arm_smmu_cmdq_ent *ent)
cmd[0] |= FIELD_PREP(CMDQ_SYNC_0_CS, CMDQ_SYNC_0_CS_SEV);
cmd[0] |= FIELD_PREP(CMDQ_SYNC_0_MSH, ARM_SMMU_SH_ISH);
cmd[0] |= FIELD_PREP(CMDQ_SYNC_0_MSIATTR, ARM_SMMU_MEMATTR_OIWB);
- cmd[0] |= FIELD_PREP(CMDQ_SYNC_0_MSIDATA, ent->sync.msidata);
+ /*
+ * Commands are written little-endian, but we want the SMMU to
+ * receive MSIData, and thus write it back to memory, in CPU
+ * byte order, so big-endian needs an extra byteswap here.
+ */
+ cmd[0] |= FIELD_PREP(CMDQ_SYNC_0_MSIDATA,
+ cpu_to_le32(ent->sync.msidata));
cmd[1] |= ent->sync.msiaddr & CMDQ_SYNC_1_MSIADDR_MASK;
break;
default:
@@ -1691,24 +1712,26 @@ static void arm_smmu_install_ste_for_dev(struct iommu_fwspec *fwspec)
static void arm_smmu_detach_dev(struct device *dev)
{
- struct arm_smmu_master_data *master = dev->iommu_fwspec->iommu_priv;
+ struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev);
+ struct arm_smmu_master_data *master = fwspec->iommu_priv;
master->ste.assigned = false;
- arm_smmu_install_ste_for_dev(dev->iommu_fwspec);
+ arm_smmu_install_ste_for_dev(fwspec);
}
static int arm_smmu_attach_dev(struct iommu_domain *domain, struct device *dev)
{
int ret = 0;
+ struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev);
struct arm_smmu_device *smmu;
struct arm_smmu_domain *smmu_domain = to_smmu_domain(domain);
struct arm_smmu_master_data *master;
struct arm_smmu_strtab_ent *ste;
- if (!dev->iommu_fwspec)
+ if (!fwspec)
return -ENOENT;
- master = dev->iommu_fwspec->iommu_priv;
+ master = fwspec->iommu_priv;
smmu = master->smmu;
ste = &master->ste;
@@ -1748,7 +1771,7 @@ static int arm_smmu_attach_dev(struct iommu_domain *domain, struct device *dev)
ste->s2_cfg = &smmu_domain->s2_cfg;
}
- arm_smmu_install_ste_for_dev(dev->iommu_fwspec);
+ arm_smmu_install_ste_for_dev(fwspec);
out_unlock:
mutex_unlock(&smmu_domain->init_mutex);
return ret;
@@ -1839,7 +1862,7 @@ static int arm_smmu_add_device(struct device *dev)
int i, ret;
struct arm_smmu_device *smmu;
struct arm_smmu_master_data *master;
- struct iommu_fwspec *fwspec = dev->iommu_fwspec;
+ struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev);
struct iommu_group *group;
if (!fwspec || fwspec->ops != &arm_smmu_ops)
@@ -1890,7 +1913,7 @@ static int arm_smmu_add_device(struct device *dev)
static void arm_smmu_remove_device(struct device *dev)
{
- struct iommu_fwspec *fwspec = dev->iommu_fwspec;
+ struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev);
struct arm_smmu_master_data *master;
struct arm_smmu_device *smmu;
@@ -2928,37 +2951,25 @@ static int arm_smmu_device_probe(struct platform_device *pdev)
return 0;
}
-static int arm_smmu_device_remove(struct platform_device *pdev)
+static void arm_smmu_device_shutdown(struct platform_device *pdev)
{
struct arm_smmu_device *smmu = platform_get_drvdata(pdev);
arm_smmu_device_disable(smmu);
-
- return 0;
-}
-
-static void arm_smmu_device_shutdown(struct platform_device *pdev)
-{
- arm_smmu_device_remove(pdev);
}
static const struct of_device_id arm_smmu_of_match[] = {
{ .compatible = "arm,smmu-v3", },
{ },
};
-MODULE_DEVICE_TABLE(of, arm_smmu_of_match);
static struct platform_driver arm_smmu_driver = {
.driver = {
.name = "arm-smmu-v3",
.of_match_table = of_match_ptr(arm_smmu_of_match),
+ .suppress_bind_attrs = true,
},
.probe = arm_smmu_device_probe,
- .remove = arm_smmu_device_remove,
.shutdown = arm_smmu_device_shutdown,
};
-module_platform_driver(arm_smmu_driver);
-
-MODULE_DESCRIPTION("IOMMU API for ARM architected SMMUv3 implementations");
-MODULE_AUTHOR("Will Deacon <will.deacon@arm.com>");
-MODULE_LICENSE("GPL v2");
+builtin_platform_driver(arm_smmu_driver);
diff --git a/drivers/iommu/arm-smmu.c b/drivers/iommu/arm-smmu.c
index 5a28ae892504..af18a7e7f917 100644
--- a/drivers/iommu/arm-smmu.c
+++ b/drivers/iommu/arm-smmu.c
@@ -41,13 +41,15 @@
#include <linux/io-64-nonatomic-hi-lo.h>
#include <linux/iommu.h>
#include <linux/iopoll.h>
-#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/moduleparam.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/of_device.h>
#include <linux/of_iommu.h>
#include <linux/pci.h>
#include <linux/platform_device.h>
+#include <linux/pm_runtime.h>
#include <linux/slab.h>
#include <linux/spinlock.h>
@@ -101,6 +103,10 @@
#define MSI_IOVA_LENGTH 0x100000
static int force_stage;
+/*
+ * not really modular, but the easiest way to keep compat with existing
+ * bootargs behaviour is to continue using module_param() here.
+ */
module_param(force_stage, int, S_IRUGO);
MODULE_PARM_DESC(force_stage,
"Force SMMU mappings to be installed at a particular stage of translation. A value of '1' or '2' forces the corresponding stage. All other values are ignored (i.e. no stage is forced). Note that selecting a specific stage will disable support for nested translation.");
@@ -119,6 +125,7 @@ enum arm_smmu_implementation {
GENERIC_SMMU,
ARM_MMU500,
CAVIUM_SMMUV2,
+ QCOM_SMMUV2,
};
struct arm_smmu_s2cr {
@@ -206,6 +213,8 @@ struct arm_smmu_device {
u32 num_global_irqs;
u32 num_context_irqs;
unsigned int *irqs;
+ struct clk_bulk_data *clks;
+ int num_clks;
u32 cavium_id_base; /* Specific to Cavium */
@@ -267,6 +276,20 @@ static struct arm_smmu_option_prop arm_smmu_options[] = {
{ 0, NULL},
};
+static inline int arm_smmu_rpm_get(struct arm_smmu_device *smmu)
+{
+ if (pm_runtime_enabled(smmu->dev))
+ return pm_runtime_get_sync(smmu->dev);
+
+ return 0;
+}
+
+static inline void arm_smmu_rpm_put(struct arm_smmu_device *smmu)
+{
+ if (pm_runtime_enabled(smmu->dev))
+ pm_runtime_put(smmu->dev);
+}
+
static struct arm_smmu_domain *to_smmu_domain(struct iommu_domain *dom)
{
return container_of(dom, struct arm_smmu_domain, domain);
@@ -926,11 +949,15 @@ static void arm_smmu_destroy_domain_context(struct iommu_domain *domain)
struct arm_smmu_domain *smmu_domain = to_smmu_domain(domain);
struct arm_smmu_device *smmu = smmu_domain->smmu;
struct arm_smmu_cfg *cfg = &smmu_domain->cfg;
- int irq;
+ int ret, irq;
if (!smmu || domain->type == IOMMU_DOMAIN_IDENTITY)
return;
+ ret = arm_smmu_rpm_get(smmu);
+ if (ret < 0)
+ return;
+
/*
* Disable the context bank and free the page tables before freeing
* it.
@@ -945,6 +972,8 @@ static void arm_smmu_destroy_domain_context(struct iommu_domain *domain)
free_io_pgtable_ops(smmu_domain->pgtbl_ops);
__arm_smmu_free_bitmap(smmu->context_map, cfg->cbndx);
+
+ arm_smmu_rpm_put(smmu);
}
static struct iommu_domain *arm_smmu_domain_alloc(unsigned type)
@@ -1103,7 +1132,7 @@ static bool arm_smmu_free_sme(struct arm_smmu_device *smmu, int idx)
static int arm_smmu_master_alloc_smes(struct device *dev)
{
- struct iommu_fwspec *fwspec = dev->iommu_fwspec;
+ struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev);
struct arm_smmu_master_cfg *cfg = fwspec->iommu_priv;
struct arm_smmu_device *smmu = cfg->smmu;
struct arm_smmu_smr *smrs = smmu->smrs;
@@ -1206,7 +1235,7 @@ static int arm_smmu_domain_add_master(struct arm_smmu_domain *smmu_domain,
static int arm_smmu_attach_dev(struct iommu_domain *domain, struct device *dev)
{
int ret;
- struct iommu_fwspec *fwspec = dev->iommu_fwspec;
+ struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev);
struct arm_smmu_device *smmu;
struct arm_smmu_domain *smmu_domain = to_smmu_domain(domain);
@@ -1226,10 +1255,15 @@ static int arm_smmu_attach_dev(struct iommu_domain *domain, struct device *dev)
return -ENODEV;
smmu = fwspec_smmu(fwspec);
+
+ ret = arm_smmu_rpm_get(smmu);
+ if (ret < 0)
+ return ret;
+
/* Ensure that the domain is finalised */
ret = arm_smmu_init_domain_context(domain, smmu);
if (ret < 0)
- return ret;
+ goto rpm_put;
/*
* Sanity check the domain. We don't support domains across
@@ -1239,49 +1273,74 @@ static int arm_smmu_attach_dev(struct iommu_domain *domain, struct device *dev)
dev_err(dev,
"cannot attach to SMMU %s whilst already attached to domain on SMMU %s\n",
dev_name(smmu_domain->smmu->dev), dev_name(smmu->dev));
- return -EINVAL;
+ ret = -EINVAL;
+ goto rpm_put;
}
/* Looks ok, so add the device to the domain */
- return arm_smmu_domain_add_master(smmu_domain, fwspec);
+ ret = arm_smmu_domain_add_master(smmu_domain, fwspec);
+
+rpm_put:
+ arm_smmu_rpm_put(smmu);
+ return ret;
}
static int arm_smmu_map(struct iommu_domain *domain, unsigned long iova,
phys_addr_t paddr, size_t size, int prot)
{
struct io_pgtable_ops *ops = to_smmu_domain(domain)->pgtbl_ops;
+ struct arm_smmu_device *smmu = to_smmu_domain(domain)->smmu;
+ int ret;
if (!ops)
return -ENODEV;
- return ops->map(ops, iova, paddr, size, prot);
+ arm_smmu_rpm_get(smmu);
+ ret = ops->map(ops, iova, paddr, size, prot);
+ arm_smmu_rpm_put(smmu);
+
+ return ret;
}
static size_t arm_smmu_unmap(struct iommu_domain *domain, unsigned long iova,
size_t size)
{
struct io_pgtable_ops *ops = to_smmu_domain(domain)->pgtbl_ops;
+ struct arm_smmu_device *smmu = to_smmu_domain(domain)->smmu;
+ size_t ret;
if (!ops)
return 0;
- return ops->unmap(ops, iova, size);
+ arm_smmu_rpm_get(smmu);
+ ret = ops->unmap(ops, iova, size);
+ arm_smmu_rpm_put(smmu);
+
+ return ret;
}
static void arm_smmu_flush_iotlb_all(struct iommu_domain *domain)
{
struct arm_smmu_domain *smmu_domain = to_smmu_domain(domain);
+ struct arm_smmu_device *smmu = smmu_domain->smmu;
- if (smmu_domain->tlb_ops)
+ if (smmu_domain->tlb_ops) {
+ arm_smmu_rpm_get(smmu);
smmu_domain->tlb_ops->tlb_flush_all(smmu_domain);
+ arm_smmu_rpm_put(smmu);
+ }
}
static void arm_smmu_iotlb_sync(struct iommu_domain *domain)
{
struct arm_smmu_domain *smmu_domain = to_smmu_domain(domain);
+ struct arm_smmu_device *smmu = smmu_domain->smmu;
- if (smmu_domain->tlb_ops)
+ if (smmu_domain->tlb_ops) {
+ arm_smmu_rpm_get(smmu);
smmu_domain->tlb_ops->tlb_sync(smmu_domain);
+ arm_smmu_rpm_put(smmu);
+ }
}
static phys_addr_t arm_smmu_iova_to_phys_hard(struct iommu_domain *domain,
@@ -1296,6 +1355,11 @@ static phys_addr_t arm_smmu_iova_to_phys_hard(struct iommu_domain *domain,
u32 tmp;
u64 phys;
unsigned long va, flags;
+ int ret;
+
+ ret = arm_smmu_rpm_get(smmu);
+ if (ret < 0)
+ return 0;
cb_base = ARM_SMMU_CB(smmu, cfg->cbndx);
@@ -1324,6 +1388,8 @@ static phys_addr_t arm_smmu_iova_to_phys_hard(struct iommu_domain *domain,
return 0;
}
+ arm_smmu_rpm_put(smmu);
+
return (phys & GENMASK_ULL(39, 12)) | (iova & 0xfff);
}
@@ -1380,7 +1446,7 @@ static int arm_smmu_add_device(struct device *dev)
{
struct arm_smmu_device *smmu;
struct arm_smmu_master_cfg *cfg;
- struct iommu_fwspec *fwspec = dev->iommu_fwspec;
+ struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev);
int i, ret;
if (using_legacy_binding) {
@@ -1391,7 +1457,7 @@ static int arm_smmu_add_device(struct device *dev)
* will allocate/initialise a new one. Thus we need to update fwspec for
* later use.
*/
- fwspec = dev->iommu_fwspec;
+ fwspec = dev_iommu_fwspec_get(dev);
if (ret)
goto out_free;
} else if (fwspec && fwspec->ops == &arm_smmu_ops) {
@@ -1428,12 +1494,21 @@ static int arm_smmu_add_device(struct device *dev)
while (i--)
cfg->smendx[i] = INVALID_SMENDX;
+ ret = arm_smmu_rpm_get(smmu);
+ if (ret < 0)
+ goto out_cfg_free;
+
ret = arm_smmu_master_alloc_smes(dev);
+ arm_smmu_rpm_put(smmu);
+
if (ret)
goto out_cfg_free;
iommu_device_link(&smmu->iommu, dev);
+ device_link_add(dev, smmu->dev,
+ DL_FLAG_PM_RUNTIME | DL_FLAG_AUTOREMOVE_SUPPLIER);
+
return 0;
out_cfg_free:
@@ -1445,10 +1520,10 @@ out_free:
static void arm_smmu_remove_device(struct device *dev)
{
- struct iommu_fwspec *fwspec = dev->iommu_fwspec;
+ struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev);
struct arm_smmu_master_cfg *cfg;
struct arm_smmu_device *smmu;
-
+ int ret;
if (!fwspec || fwspec->ops != &arm_smmu_ops)
return;
@@ -1456,8 +1531,15 @@ static void arm_smmu_remove_device(struct device *dev)
cfg = fwspec->iommu_priv;
smmu = cfg->smmu;
+ ret = arm_smmu_rpm_get(smmu);
+ if (ret < 0)
+ return;
+
iommu_device_unlink(&smmu->iommu, dev);
arm_smmu_master_free_smes(fwspec);
+
+ arm_smmu_rpm_put(smmu);
+
iommu_group_remove_device(dev);
kfree(fwspec->iommu_priv);
iommu_fwspec_free(dev);
@@ -1465,7 +1547,7 @@ static void arm_smmu_remove_device(struct device *dev)
static struct iommu_group *arm_smmu_device_group(struct device *dev)
{
- struct iommu_fwspec *fwspec = dev->iommu_fwspec;
+ struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev);
struct arm_smmu_device *smmu = fwspec_smmu(fwspec);
struct iommu_group *group = NULL;
int i, idx;
@@ -1947,13 +2029,14 @@ struct arm_smmu_match_data {
};
#define ARM_SMMU_MATCH_DATA(name, ver, imp) \
-static struct arm_smmu_match_data name = { .version = ver, .model = imp }
+static const struct arm_smmu_match_data name = { .version = ver, .model = imp }
ARM_SMMU_MATCH_DATA(smmu_generic_v1, ARM_SMMU_V1, GENERIC_SMMU);
ARM_SMMU_MATCH_DATA(smmu_generic_v2, ARM_SMMU_V2, GENERIC_SMMU);
ARM_SMMU_MATCH_DATA(arm_mmu401, ARM_SMMU_V1_64K, GENERIC_SMMU);
ARM_SMMU_MATCH_DATA(arm_mmu500, ARM_SMMU_V2, ARM_MMU500);
ARM_SMMU_MATCH_DATA(cavium_smmuv2, ARM_SMMU_V2, CAVIUM_SMMUV2);
+ARM_SMMU_MATCH_DATA(qcom_smmuv2, ARM_SMMU_V2, QCOM_SMMUV2);
static const struct of_device_id arm_smmu_of_match[] = {
{ .compatible = "arm,smmu-v1", .data = &smmu_generic_v1 },
@@ -1962,9 +2045,9 @@ static const struct of_device_id arm_smmu_of_match[] = {
{ .compatible = "arm,mmu-401", .data = &arm_mmu401 },
{ .compatible = "arm,mmu-500", .data = &arm_mmu500 },
{ .compatible = "cavium,smmu-v2", .data = &cavium_smmuv2 },
+ { .compatible = "qcom,smmu-v2", .data = &qcom_smmuv2 },
{ },
};
-MODULE_DEVICE_TABLE(of, arm_smmu_of_match);
#ifdef CONFIG_ACPI
static int acpi_smmu_get_data(u32 model, struct arm_smmu_device *smmu)
@@ -2150,6 +2233,17 @@ static int arm_smmu_device_probe(struct platform_device *pdev)
smmu->irqs[i] = irq;
}
+ err = devm_clk_bulk_get_all(dev, &smmu->clks);
+ if (err < 0) {
+ dev_err(dev, "failed to get clocks %d\n", err);
+ return err;
+ }
+ smmu->num_clks = err;
+
+ err = clk_bulk_prepare_enable(smmu->num_clks, smmu->clks);
+ if (err)
+ return err;
+
err = arm_smmu_device_cfg_probe(smmu);
if (err)
return err;
@@ -2200,6 +2294,17 @@ static int arm_smmu_device_probe(struct platform_device *pdev)
arm_smmu_test_smr_masks(smmu);
/*
+ * We want to avoid touching dev->power.lock in fastpaths unless
+ * it's really going to do something useful - pm_runtime_enabled()
+ * can serve as an ideal proxy for that decision. So, conditionally
+ * enable pm_runtime.
+ */
+ if (dev->pm_domain) {
+ pm_runtime_set_active(dev);
+ pm_runtime_enable(dev);
+ }
+
+ /*
* For ACPI and generic DT bindings, an SMMU will be probed before
* any device which might need it, so we want the bus ops in place
* ready to handle default domain setup as soon as any SMMU exists.
@@ -2224,48 +2329,82 @@ static int arm_smmu_legacy_bus_init(void)
}
device_initcall_sync(arm_smmu_legacy_bus_init);
-static int arm_smmu_device_remove(struct platform_device *pdev)
+static void arm_smmu_device_shutdown(struct platform_device *pdev)
{
struct arm_smmu_device *smmu = platform_get_drvdata(pdev);
if (!smmu)
- return -ENODEV;
+ return;
if (!bitmap_empty(smmu->context_map, ARM_SMMU_MAX_CBS))
dev_err(&pdev->dev, "removing device with active domains!\n");
+ arm_smmu_rpm_get(smmu);
/* Turn the thing off */
writel(sCR0_CLIENTPD, ARM_SMMU_GR0_NS(smmu) + ARM_SMMU_GR0_sCR0);
- return 0;
+ arm_smmu_rpm_put(smmu);
+
+ if (pm_runtime_enabled(smmu->dev))
+ pm_runtime_force_suspend(smmu->dev);
+ else
+ clk_bulk_disable(smmu->num_clks, smmu->clks);
+
+ clk_bulk_unprepare(smmu->num_clks, smmu->clks);
}
-static void arm_smmu_device_shutdown(struct platform_device *pdev)
+static int __maybe_unused arm_smmu_runtime_resume(struct device *dev)
{
- arm_smmu_device_remove(pdev);
+ struct arm_smmu_device *smmu = dev_get_drvdata(dev);
+ int ret;
+
+ ret = clk_bulk_enable(smmu->num_clks, smmu->clks);
+ if (ret)
+ return ret;
+
+ arm_smmu_device_reset(smmu);
+
+ return 0;
}
-static int __maybe_unused arm_smmu_pm_resume(struct device *dev)
+static int __maybe_unused arm_smmu_runtime_suspend(struct device *dev)
{
struct arm_smmu_device *smmu = dev_get_drvdata(dev);
- arm_smmu_device_reset(smmu);
+ clk_bulk_disable(smmu->num_clks, smmu->clks);
+
return 0;
}
-static SIMPLE_DEV_PM_OPS(arm_smmu_pm_ops, NULL, arm_smmu_pm_resume);
+static int __maybe_unused arm_smmu_pm_resume(struct device *dev)
+{
+ if (pm_runtime_suspended(dev))
+ return 0;
+
+ return arm_smmu_runtime_resume(dev);
+}
+
+static int __maybe_unused arm_smmu_pm_suspend(struct device *dev)
+{
+ if (pm_runtime_suspended(dev))
+ return 0;
+
+ return arm_smmu_runtime_suspend(dev);
+}
+
+static const struct dev_pm_ops arm_smmu_pm_ops = {
+ SET_SYSTEM_SLEEP_PM_OPS(arm_smmu_pm_suspend, arm_smmu_pm_resume)
+ SET_RUNTIME_PM_OPS(arm_smmu_runtime_suspend,
+ arm_smmu_runtime_resume, NULL)
+};
static struct platform_driver arm_smmu_driver = {
.driver = {
- .name = "arm-smmu",
- .of_match_table = of_match_ptr(arm_smmu_of_match),
- .pm = &arm_smmu_pm_ops,
+ .name = "arm-smmu",
+ .of_match_table = of_match_ptr(arm_smmu_of_match),
+ .pm = &arm_smmu_pm_ops,
+ .suppress_bind_attrs = true,
},
.probe = arm_smmu_device_probe,
- .remove = arm_smmu_device_remove,
.shutdown = arm_smmu_device_shutdown,
};
-module_platform_driver(arm_smmu_driver);
-
-MODULE_DESCRIPTION("IOMMU API for ARM architected SMMU implementations");
-MODULE_AUTHOR("Will Deacon <will.deacon@arm.com>");
-MODULE_LICENSE("GPL v2");
+builtin_platform_driver(arm_smmu_driver);
diff --git a/drivers/iommu/dma-iommu.c b/drivers/iommu/dma-iommu.c
index d1b04753b204..13787d3ee338 100644
--- a/drivers/iommu/dma-iommu.c
+++ b/drivers/iommu/dma-iommu.c
@@ -177,7 +177,7 @@ EXPORT_SYMBOL(iommu_put_dma_cookie);
void iommu_dma_get_resv_regions(struct device *dev, struct list_head *list)
{
- if (!is_of_node(dev->iommu_fwspec->iommu_fwnode))
+ if (!is_of_node(dev_iommu_fwspec_get(dev)->iommu_fwnode))
iort_iommu_msi_get_resv_regions(dev, list);
}
@@ -449,20 +449,17 @@ static void __iommu_dma_free_pages(struct page **pages, int count)
kvfree(pages);
}
-static struct page **__iommu_dma_alloc_pages(unsigned int count,
- unsigned long order_mask, gfp_t gfp)
+static struct page **__iommu_dma_alloc_pages(struct device *dev,
+ unsigned int count, unsigned long order_mask, gfp_t gfp)
{
struct page **pages;
- unsigned int i = 0, array_size = count * sizeof(*pages);
+ unsigned int i = 0, nid = dev_to_node(dev);
order_mask &= (2U << MAX_ORDER) - 1;
if (!order_mask)
return NULL;
- if (array_size <= PAGE_SIZE)
- pages = kzalloc(array_size, GFP_KERNEL);
- else
- pages = vzalloc(array_size);
+ pages = kvzalloc(count * sizeof(*pages), GFP_KERNEL);
if (!pages)
return NULL;
@@ -481,10 +478,12 @@ static struct page **__iommu_dma_alloc_pages(unsigned int count,
for (order_mask &= (2U << __fls(count)) - 1;
order_mask; order_mask &= ~order_size) {
unsigned int order = __fls(order_mask);
+ gfp_t alloc_flags = gfp;
order_size = 1U << order;
- page = alloc_pages((order_mask - order_size) ?
- gfp | __GFP_NORETRY : gfp, order);
+ if (order_mask > order_size)
+ alloc_flags |= __GFP_NORETRY;
+ page = alloc_pages_node(nid, alloc_flags, order);
if (!page)
continue;
if (!order)
@@ -569,7 +568,8 @@ struct page **iommu_dma_alloc(struct device *dev, size_t size, gfp_t gfp,
alloc_sizes = min_size;
count = PAGE_ALIGN(size) >> PAGE_SHIFT;
- pages = __iommu_dma_alloc_pages(count, alloc_sizes >> PAGE_SHIFT, gfp);
+ pages = __iommu_dma_alloc_pages(dev, count, alloc_sizes >> PAGE_SHIFT,
+ gfp);
if (!pages)
return NULL;
diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c
index 9043e1e9b2be..eb5351e8cde5 100644
--- a/drivers/iommu/intel-iommu.c
+++ b/drivers/iommu/intel-iommu.c
@@ -3117,7 +3117,7 @@ static int copy_context_table(struct intel_iommu *iommu,
}
if (old_ce)
- iounmap(old_ce);
+ memunmap(old_ce);
ret = 0;
if (devfn < 0x80)
diff --git a/drivers/iommu/intel-svm.c b/drivers/iommu/intel-svm.c
index 5b2e3b2d593b..a2a2aa4439aa 100644
--- a/drivers/iommu/intel-svm.c
+++ b/drivers/iommu/intel-svm.c
@@ -543,7 +543,7 @@ static irqreturn_t prq_event_thread(int irq, void *d)
pr_err("%s: Page request without PASID: %08llx %08llx\n",
iommu->name, ((unsigned long long *)req)[0],
((unsigned long long *)req)[1]);
- goto bad_req;
+ goto no_pasid;
}
if (!svm || svm->pasid != req->pasid) {
diff --git a/drivers/iommu/io-pgtable-arm-v7s.c b/drivers/iommu/io-pgtable-arm-v7s.c
index 445c3bde0480..cec29bf45c9b 100644
--- a/drivers/iommu/io-pgtable-arm-v7s.c
+++ b/drivers/iommu/io-pgtable-arm-v7s.c
@@ -709,10 +709,6 @@ static struct io_pgtable *arm_v7s_alloc_pgtable(struct io_pgtable_cfg *cfg,
{
struct arm_v7s_io_pgtable *data;
-#ifdef PHYS_OFFSET
- if (upper_32_bits(PHYS_OFFSET))
- return NULL;
-#endif
if (cfg->ias > ARM_V7S_ADDR_BITS || cfg->oas > ARM_V7S_ADDR_BITS)
return NULL;
diff --git a/drivers/iommu/iommu-sysfs.c b/drivers/iommu/iommu-sysfs.c
index 36d1a7ce7fc4..44127d54e943 100644
--- a/drivers/iommu/iommu-sysfs.c
+++ b/drivers/iommu/iommu-sysfs.c
@@ -11,7 +11,7 @@
#include <linux/device.h>
#include <linux/iommu.h>
-#include <linux/module.h>
+#include <linux/init.h>
#include <linux/slab.h>
/*
@@ -22,25 +22,25 @@ static struct attribute *devices_attr[] = {
NULL,
};
-static const struct attribute_group iommu_devices_attr_group = {
+static const struct attribute_group devices_attr_group = {
.name = "devices",
.attrs = devices_attr,
};
-static const struct attribute_group *iommu_dev_groups[] = {
- &iommu_devices_attr_group,
+static const struct attribute_group *dev_groups[] = {
+ &devices_attr_group,
NULL,
};
-static void iommu_release_device(struct device *dev)
+static void release_device(struct device *dev)
{
kfree(dev);
}
static struct class iommu_class = {
.name = "iommu",
- .dev_release = iommu_release_device,
- .dev_groups = iommu_dev_groups,
+ .dev_release = release_device,
+ .dev_groups = dev_groups,
};
static int __init iommu_dev_init(void)
diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c
index edbdf5d6962c..3ed4db334341 100644
--- a/drivers/iommu/iommu.c
+++ b/drivers/iommu/iommu.c
@@ -22,7 +22,8 @@
#include <linux/kernel.h>
#include <linux/bug.h>
#include <linux/types.h>
-#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/export.h>
#include <linux/slab.h>
#include <linux/errno.h>
#include <linux/iommu.h>
@@ -110,6 +111,27 @@ void iommu_device_unregister(struct iommu_device *iommu)
spin_unlock(&iommu_device_lock);
}
+int iommu_probe_device(struct device *dev)
+{
+ const struct iommu_ops *ops = dev->bus->iommu_ops;
+ int ret = -EINVAL;
+
+ WARN_ON(dev->iommu_group);
+
+ if (ops)
+ ret = ops->add_device(dev);
+
+ return ret;
+}
+
+void iommu_release_device(struct device *dev)
+{
+ const struct iommu_ops *ops = dev->bus->iommu_ops;
+
+ if (dev->iommu_group)
+ ops->remove_device(dev);
+}
+
static struct iommu_domain *__iommu_domain_alloc(struct bus_type *bus,
unsigned type);
static int __iommu_attach_device(struct iommu_domain *domain,
@@ -1117,16 +1139,7 @@ struct iommu_domain *iommu_group_default_domain(struct iommu_group *group)
static int add_iommu_group(struct device *dev, void *data)
{
- struct iommu_callback_data *cb = data;
- const struct iommu_ops *ops = cb->ops;
- int ret;
-
- if (!ops->add_device)
- return 0;
-
- WARN_ON(dev->iommu_group);
-
- ret = ops->add_device(dev);
+ int ret = iommu_probe_device(dev);
/*
* We ignore -ENODEV errors for now, as they just mean that the
@@ -1141,11 +1154,7 @@ static int add_iommu_group(struct device *dev, void *data)
static int remove_iommu_group(struct device *dev, void *data)
{
- struct iommu_callback_data *cb = data;
- const struct iommu_ops *ops = cb->ops;
-
- if (ops->remove_device && dev->iommu_group)
- ops->remove_device(dev);
+ iommu_release_device(dev);
return 0;
}
@@ -1153,27 +1162,22 @@ static int remove_iommu_group(struct device *dev, void *data)
static int iommu_bus_notifier(struct notifier_block *nb,
unsigned long action, void *data)
{
+ unsigned long group_action = 0;
struct device *dev = data;
- const struct iommu_ops *ops = dev->bus->iommu_ops;
struct iommu_group *group;
- unsigned long group_action = 0;
/*
* ADD/DEL call into iommu driver ops if provided, which may
* result in ADD/DEL notifiers to group->notifier
*/
if (action == BUS_NOTIFY_ADD_DEVICE) {
- if (ops->add_device) {
- int ret;
+ int ret;
- ret = ops->add_device(dev);
- return (ret) ? NOTIFY_DONE : NOTIFY_OK;
- }
+ ret = iommu_probe_device(dev);
+ return (ret) ? NOTIFY_DONE : NOTIFY_OK;
} else if (action == BUS_NOTIFY_REMOVED_DEVICE) {
- if (ops->remove_device && dev->iommu_group) {
- ops->remove_device(dev);
- return 0;
- }
+ iommu_release_device(dev);
+ return NOTIFY_OK;
}
/*
@@ -1712,33 +1716,32 @@ EXPORT_SYMBOL_GPL(iommu_unmap_fast);
size_t iommu_map_sg(struct iommu_domain *domain, unsigned long iova,
struct scatterlist *sg, unsigned int nents, int prot)
{
- struct scatterlist *s;
- size_t mapped = 0;
- unsigned int i, min_pagesz;
+ size_t len = 0, mapped = 0;
+ phys_addr_t start;
+ unsigned int i = 0;
int ret;
- if (unlikely(domain->pgsize_bitmap == 0UL))
- return 0;
+ while (i <= nents) {
+ phys_addr_t s_phys = sg_phys(sg);
- min_pagesz = 1 << __ffs(domain->pgsize_bitmap);
-
- for_each_sg(sg, s, nents, i) {
- phys_addr_t phys = page_to_phys(sg_page(s)) + s->offset;
+ if (len && s_phys != start + len) {
+ ret = iommu_map(domain, iova + mapped, start, len, prot);
+ if (ret)
+ goto out_err;
- /*
- * We are mapping on IOMMU page boundaries, so offset within
- * the page must be 0. However, the IOMMU may support pages
- * smaller than PAGE_SIZE, so s->offset may still represent
- * an offset of that boundary within the CPU page.
- */
- if (!IS_ALIGNED(s->offset, min_pagesz))
- goto out_err;
+ mapped += len;
+ len = 0;
+ }
- ret = iommu_map(domain, iova + mapped, phys, s->length, prot);
- if (ret)
- goto out_err;
+ if (len) {
+ len += sg->length;
+ } else {
+ len = sg->length;
+ start = s_phys;
+ }
- mapped += s->length;
+ if (++i < nents)
+ sg = sg_next(sg);
}
return mapped;
@@ -1976,7 +1979,7 @@ const struct iommu_ops *iommu_ops_from_fwnode(struct fwnode_handle *fwnode)
int iommu_fwspec_init(struct device *dev, struct fwnode_handle *iommu_fwnode,
const struct iommu_ops *ops)
{
- struct iommu_fwspec *fwspec = dev->iommu_fwspec;
+ struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev);
if (fwspec)
return ops == fwspec->ops ? 0 : -EINVAL;
@@ -1988,26 +1991,26 @@ int iommu_fwspec_init(struct device *dev, struct fwnode_handle *iommu_fwnode,
of_node_get(to_of_node(iommu_fwnode));
fwspec->iommu_fwnode = iommu_fwnode;
fwspec->ops = ops;
- dev->iommu_fwspec = fwspec;
+ dev_iommu_fwspec_set(dev, fwspec);
return 0;
}
EXPORT_SYMBOL_GPL(iommu_fwspec_init);
void iommu_fwspec_free(struct device *dev)
{
- struct iommu_fwspec *fwspec = dev->iommu_fwspec;
+ struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev);
if (fwspec) {
fwnode_handle_put(fwspec->iommu_fwnode);
kfree(fwspec);
- dev->iommu_fwspec = NULL;
+ dev_iommu_fwspec_set(dev, NULL);
}
}
EXPORT_SYMBOL_GPL(iommu_fwspec_free);
int iommu_fwspec_add_ids(struct device *dev, u32 *ids, int num_ids)
{
- struct iommu_fwspec *fwspec = dev->iommu_fwspec;
+ struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev);
size_t size;
int i;
@@ -2016,11 +2019,11 @@ int iommu_fwspec_add_ids(struct device *dev, u32 *ids, int num_ids)
size = offsetof(struct iommu_fwspec, ids[fwspec->num_ids + num_ids]);
if (size > sizeof(*fwspec)) {
- fwspec = krealloc(dev->iommu_fwspec, size, GFP_KERNEL);
+ fwspec = krealloc(fwspec, size, GFP_KERNEL);
if (!fwspec)
return -ENOMEM;
- dev->iommu_fwspec = fwspec;
+ dev_iommu_fwspec_set(dev, fwspec);
}
for (i = 0; i < num_ids; i++)
diff --git a/drivers/iommu/ipmmu-vmsa.c b/drivers/iommu/ipmmu-vmsa.c
index b98a03189580..7a4529c61c19 100644
--- a/drivers/iommu/ipmmu-vmsa.c
+++ b/drivers/iommu/ipmmu-vmsa.c
@@ -1,6 +1,7 @@
// SPDX-License-Identifier: GPL-2.0
/*
- * IPMMU VMSA
+ * IOMMU API for Renesas VMSA-compatible IPMMU
+ * Author: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
*
* Copyright (C) 2014 Renesas Electronics Corporation
*/
@@ -11,10 +12,10 @@
#include <linux/dma-mapping.h>
#include <linux/err.h>
#include <linux/export.h>
+#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/io.h>
#include <linux/iommu.h>
-#include <linux/module.h>
#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/of_iommu.h>
@@ -81,7 +82,9 @@ static struct ipmmu_vmsa_domain *to_vmsa_domain(struct iommu_domain *dom)
static struct ipmmu_vmsa_device *to_ipmmu(struct device *dev)
{
- return dev->iommu_fwspec ? dev->iommu_fwspec->iommu_priv : NULL;
+ struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev);
+
+ return fwspec ? fwspec->iommu_priv : NULL;
}
#define TLB_LOOP_TIMEOUT 100 /* 100us */
@@ -498,6 +501,9 @@ static int ipmmu_domain_init_context(struct ipmmu_vmsa_domain *domain)
static void ipmmu_domain_destroy_context(struct ipmmu_vmsa_domain *domain)
{
+ if (!domain->mmu)
+ return;
+
/*
* Disable the context. Flush the TLB as required when modifying the
* context registers.
@@ -640,7 +646,7 @@ static void ipmmu_domain_free(struct iommu_domain *io_domain)
static int ipmmu_attach_device(struct iommu_domain *io_domain,
struct device *dev)
{
- struct iommu_fwspec *fwspec = dev->iommu_fwspec;
+ struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev);
struct ipmmu_vmsa_device *mmu = to_ipmmu(dev);
struct ipmmu_vmsa_domain *domain = to_vmsa_domain(io_domain);
unsigned int i;
@@ -689,7 +695,7 @@ static int ipmmu_attach_device(struct iommu_domain *io_domain,
static void ipmmu_detach_device(struct iommu_domain *io_domain,
struct device *dev)
{
- struct iommu_fwspec *fwspec = dev->iommu_fwspec;
+ struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev);
struct ipmmu_vmsa_domain *domain = to_vmsa_domain(io_domain);
unsigned int i;
@@ -741,36 +747,71 @@ static phys_addr_t ipmmu_iova_to_phys(struct iommu_domain *io_domain,
static int ipmmu_init_platform_device(struct device *dev,
struct of_phandle_args *args)
{
+ struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev);
struct platform_device *ipmmu_pdev;
ipmmu_pdev = of_find_device_by_node(args->np);
if (!ipmmu_pdev)
return -ENODEV;
- dev->iommu_fwspec->iommu_priv = platform_get_drvdata(ipmmu_pdev);
- return 0;
-}
+ fwspec->iommu_priv = platform_get_drvdata(ipmmu_pdev);
-static bool ipmmu_slave_whitelist(struct device *dev)
-{
- /* By default, do not allow use of IPMMU */
- return false;
+ return 0;
}
static const struct soc_device_attribute soc_rcar_gen3[] = {
+ { .soc_id = "r8a774a1", },
+ { .soc_id = "r8a774c0", },
{ .soc_id = "r8a7795", },
{ .soc_id = "r8a7796", },
{ .soc_id = "r8a77965", },
{ .soc_id = "r8a77970", },
+ { .soc_id = "r8a77990", },
+ { .soc_id = "r8a77995", },
+ { /* sentinel */ }
+};
+
+static const struct soc_device_attribute soc_rcar_gen3_whitelist[] = {
+ { .soc_id = "r8a774c0", },
+ { .soc_id = "r8a7795", .revision = "ES3.*" },
+ { .soc_id = "r8a77965", },
+ { .soc_id = "r8a77990", },
{ .soc_id = "r8a77995", },
{ /* sentinel */ }
};
+static const char * const rcar_gen3_slave_whitelist[] = {
+};
+
+static bool ipmmu_slave_whitelist(struct device *dev)
+{
+ unsigned int i;
+
+ /*
+ * For R-Car Gen3 use a white list to opt-in slave devices.
+ * For Other SoCs, this returns true anyway.
+ */
+ if (!soc_device_match(soc_rcar_gen3))
+ return true;
+
+ /* Check whether this R-Car Gen3 can use the IPMMU correctly or not */
+ if (!soc_device_match(soc_rcar_gen3_whitelist))
+ return false;
+
+ /* Check whether this slave device can work with the IPMMU */
+ for (i = 0; i < ARRAY_SIZE(rcar_gen3_slave_whitelist); i++) {
+ if (!strcmp(dev_name(dev), rcar_gen3_slave_whitelist[i]))
+ return true;
+ }
+
+ /* Otherwise, do not allow use of IPMMU */
+ return false;
+}
+
static int ipmmu_of_xlate(struct device *dev,
struct of_phandle_args *spec)
{
- /* For R-Car Gen3 use a white list to opt-in slave devices */
- if (soc_device_match(soc_rcar_gen3) && !ipmmu_slave_whitelist(dev))
+ if (!ipmmu_slave_whitelist(dev))
return -ENODEV;
iommu_fwspec_add_ids(dev, spec->args, 1);
@@ -938,6 +979,12 @@ static const struct of_device_id ipmmu_of_ids[] = {
.compatible = "renesas,ipmmu-vmsa",
.data = &ipmmu_features_default,
}, {
+ .compatible = "renesas,ipmmu-r8a774a1",
+ .data = &ipmmu_features_rcar_gen3,
+ }, {
+ .compatible = "renesas,ipmmu-r8a774c0",
+ .data = &ipmmu_features_rcar_gen3,
+ }, {
.compatible = "renesas,ipmmu-r8a7795",
.data = &ipmmu_features_rcar_gen3,
}, {
@@ -950,6 +997,9 @@ static const struct of_device_id ipmmu_of_ids[] = {
.compatible = "renesas,ipmmu-r8a77970",
.data = &ipmmu_features_rcar_gen3,
}, {
+ .compatible = "renesas,ipmmu-r8a77990",
+ .data = &ipmmu_features_rcar_gen3,
+ }, {
.compatible = "renesas,ipmmu-r8a77995",
.data = &ipmmu_features_rcar_gen3,
}, {
@@ -957,8 +1007,6 @@ static const struct of_device_id ipmmu_of_ids[] = {
},
};
-MODULE_DEVICE_TABLE(of, ipmmu_of_ids);
-
static int ipmmu_probe(struct platform_device *pdev)
{
struct ipmmu_vmsa_device *mmu;
@@ -1129,15 +1177,4 @@ static int __init ipmmu_init(void)
setup_done = true;
return 0;
}
-
-static void __exit ipmmu_exit(void)
-{
- return platform_driver_unregister(&ipmmu_driver);
-}
-
subsys_initcall(ipmmu_init);
-module_exit(ipmmu_exit);
-
-MODULE_DESCRIPTION("IOMMU API for Renesas VMSA-compatible IPMMU");
-MODULE_AUTHOR("Laurent Pinchart <laurent.pinchart@ideasonboard.com>");
-MODULE_LICENSE("GPL v2");
diff --git a/drivers/iommu/irq_remapping.c b/drivers/iommu/irq_remapping.c
index 7d0f3074d41d..b94ebd42edd8 100644
--- a/drivers/iommu/irq_remapping.c
+++ b/drivers/iommu/irq_remapping.c
@@ -1,4 +1,3 @@
-#include <linux/seq_file.h>
#include <linux/cpumask.h>
#include <linux/kernel.h>
#include <linux/string.h>
diff --git a/drivers/iommu/msm_iommu.c b/drivers/iommu/msm_iommu.c
index fc5f0b53adaf..fc4270733f11 100644
--- a/drivers/iommu/msm_iommu.c
+++ b/drivers/iommu/msm_iommu.c
@@ -1,5 +1,7 @@
/* Copyright (c) 2010-2011, Code Aurora Forum. All rights reserved.
*
+ * Author: Stepan Moskovchenko <stepanm@codeaurora.org>
+ *
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
* only version 2 as published by the Free Software Foundation.
@@ -17,7 +19,7 @@
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/kernel.h>
-#include <linux/module.h>
+#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/errno.h>
#include <linux/io.h>
@@ -861,14 +863,5 @@ static int __init msm_iommu_driver_init(void)
return ret;
}
-
-static void __exit msm_iommu_driver_exit(void)
-{
- platform_driver_unregister(&msm_iommu_driver);
-}
-
subsys_initcall(msm_iommu_driver_init);
-module_exit(msm_iommu_driver_exit);
-MODULE_LICENSE("GPL v2");
-MODULE_AUTHOR("Stepan Moskovchenko <stepanm@codeaurora.org>");
diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c
index 44bd5b9166bb..de3e02277b70 100644
--- a/drivers/iommu/mtk_iommu.c
+++ b/drivers/iommu/mtk_iommu.c
@@ -113,7 +113,7 @@ struct mtk_iommu_domain {
struct iommu_domain domain;
};
-static struct iommu_ops mtk_iommu_ops;
+static const struct iommu_ops mtk_iommu_ops;
static LIST_HEAD(m4ulist); /* List all the M4U HWs */
@@ -244,7 +244,7 @@ static void mtk_iommu_config(struct mtk_iommu_data *data,
{
struct mtk_smi_larb_iommu *larb_mmu;
unsigned int larbid, portid;
- struct iommu_fwspec *fwspec = dev->iommu_fwspec;
+ struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev);
int i;
for (i = 0; i < fwspec->num_ids; ++i) {
@@ -336,7 +336,7 @@ static int mtk_iommu_attach_device(struct iommu_domain *domain,
struct device *dev)
{
struct mtk_iommu_domain *dom = to_mtk_domain(domain);
- struct mtk_iommu_data *data = dev->iommu_fwspec->iommu_priv;
+ struct mtk_iommu_data *data = dev_iommu_fwspec_get(dev)->iommu_priv;
if (!data)
return -ENODEV;
@@ -355,7 +355,7 @@ static int mtk_iommu_attach_device(struct iommu_domain *domain,
static void mtk_iommu_detach_device(struct iommu_domain *domain,
struct device *dev)
{
- struct mtk_iommu_data *data = dev->iommu_fwspec->iommu_priv;
+ struct mtk_iommu_data *data = dev_iommu_fwspec_get(dev)->iommu_priv;
if (!data)
return;
@@ -417,13 +417,14 @@ static phys_addr_t mtk_iommu_iova_to_phys(struct iommu_domain *domain,
static int mtk_iommu_add_device(struct device *dev)
{
+ struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev);
struct mtk_iommu_data *data;
struct iommu_group *group;
- if (!dev->iommu_fwspec || dev->iommu_fwspec->ops != &mtk_iommu_ops)
+ if (!fwspec || fwspec->ops != &mtk_iommu_ops)
return -ENODEV; /* Not a iommu client device */
- data = dev->iommu_fwspec->iommu_priv;
+ data = fwspec->iommu_priv;
iommu_device_link(&data->iommu, dev);
group = iommu_group_get_for_dev(dev);
@@ -436,12 +437,13 @@ static int mtk_iommu_add_device(struct device *dev)
static void mtk_iommu_remove_device(struct device *dev)
{
+ struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev);
struct mtk_iommu_data *data;
- if (!dev->iommu_fwspec || dev->iommu_fwspec->ops != &mtk_iommu_ops)
+ if (!fwspec || fwspec->ops != &mtk_iommu_ops)
return;
- data = dev->iommu_fwspec->iommu_priv;
+ data = fwspec->iommu_priv;
iommu_device_unlink(&data->iommu, dev);
iommu_group_remove_device(dev);
@@ -468,6 +470,7 @@ static struct iommu_group *mtk_iommu_device_group(struct device *dev)
static int mtk_iommu_of_xlate(struct device *dev, struct of_phandle_args *args)
{
+ struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev);
struct platform_device *m4updev;
if (args->args_count != 1) {
@@ -476,19 +479,19 @@ static int mtk_iommu_of_xlate(struct device *dev, struct of_phandle_args *args)
return -EINVAL;
}
- if (!dev->iommu_fwspec->iommu_priv) {
+ if (!fwspec->iommu_priv) {
/* Get the m4u device */
m4updev = of_find_device_by_node(args->np);
if (WARN_ON(!m4updev))
return -EINVAL;
- dev->iommu_fwspec->iommu_priv = platform_get_drvdata(m4updev);
+ fwspec->iommu_priv = platform_get_drvdata(m4updev);
}
return iommu_fwspec_add_ids(dev, args->args, 1);
}
-static struct iommu_ops mtk_iommu_ops = {
+static const struct iommu_ops mtk_iommu_ops = {
.domain_alloc = mtk_iommu_domain_alloc,
.domain_free = mtk_iommu_domain_free,
.attach_dev = mtk_iommu_attach_device,
diff --git a/drivers/iommu/mtk_iommu_v1.c b/drivers/iommu/mtk_iommu_v1.c
index 0e780848f59b..6ede4286b835 100644
--- a/drivers/iommu/mtk_iommu_v1.c
+++ b/drivers/iommu/mtk_iommu_v1.c
@@ -1,4 +1,6 @@
/*
+ * IOMMU API for MTK architected m4u v1 implementations
+ *
* Copyright (c) 2015-2016 MediaTek Inc.
* Author: Honghui Zhang <honghui.zhang@mediatek.com>
*
@@ -35,7 +37,7 @@
#include <linux/spinlock.h>
#include <asm/barrier.h>
#include <asm/dma-iommu.h>
-#include <linux/module.h>
+#include <linux/init.h>
#include <dt-bindings/memory/mt2701-larb-port.h>
#include <soc/mediatek/smi.h>
#include "mtk_iommu.h"
@@ -206,7 +208,7 @@ static void mtk_iommu_config(struct mtk_iommu_data *data,
{
struct mtk_smi_larb_iommu *larb_mmu;
unsigned int larbid, portid;
- struct iommu_fwspec *fwspec = dev->iommu_fwspec;
+ struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev);
int i;
for (i = 0; i < fwspec->num_ids; ++i) {
@@ -271,7 +273,7 @@ static int mtk_iommu_attach_device(struct iommu_domain *domain,
struct device *dev)
{
struct mtk_iommu_domain *dom = to_mtk_domain(domain);
- struct mtk_iommu_data *data = dev->iommu_fwspec->iommu_priv;
+ struct mtk_iommu_data *data = dev_iommu_fwspec_get(dev)->iommu_priv;
int ret;
if (!data)
@@ -293,7 +295,7 @@ static int mtk_iommu_attach_device(struct iommu_domain *domain,
static void mtk_iommu_detach_device(struct iommu_domain *domain,
struct device *dev)
{
- struct mtk_iommu_data *data = dev->iommu_fwspec->iommu_priv;
+ struct mtk_iommu_data *data = dev_iommu_fwspec_get(dev)->iommu_priv;
if (!data)
return;
@@ -362,7 +364,7 @@ static phys_addr_t mtk_iommu_iova_to_phys(struct iommu_domain *domain,
return pa;
}
-static struct iommu_ops mtk_iommu_ops;
+static const struct iommu_ops mtk_iommu_ops;
/*
* MTK generation one iommu HW only support one iommu domain, and all the client
@@ -371,6 +373,7 @@ static struct iommu_ops mtk_iommu_ops;
static int mtk_iommu_create_mapping(struct device *dev,
struct of_phandle_args *args)
{
+ struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev);
struct mtk_iommu_data *data;
struct platform_device *m4updev;
struct dma_iommu_mapping *mtk_mapping;
@@ -383,28 +386,29 @@ static int mtk_iommu_create_mapping(struct device *dev,
return -EINVAL;
}
- if (!dev->iommu_fwspec) {
+ if (!fwspec) {
ret = iommu_fwspec_init(dev, &args->np->fwnode, &mtk_iommu_ops);
if (ret)
return ret;
- } else if (dev->iommu_fwspec->ops != &mtk_iommu_ops) {
+ fwspec = dev_iommu_fwspec_get(dev);
+ } else if (dev_iommu_fwspec_get(dev)->ops != &mtk_iommu_ops) {
return -EINVAL;
}
- if (!dev->iommu_fwspec->iommu_priv) {
+ if (!fwspec->iommu_priv) {
/* Get the m4u device */
m4updev = of_find_device_by_node(args->np);
if (WARN_ON(!m4updev))
return -EINVAL;
- dev->iommu_fwspec->iommu_priv = platform_get_drvdata(m4updev);
+ fwspec->iommu_priv = platform_get_drvdata(m4updev);
}
ret = iommu_fwspec_add_ids(dev, args->args, 1);
if (ret)
return ret;
- data = dev->iommu_fwspec->iommu_priv;
+ data = fwspec->iommu_priv;
m4udev = data->dev;
mtk_mapping = m4udev->archdata.iommu;
if (!mtk_mapping) {
@@ -422,6 +426,7 @@ static int mtk_iommu_create_mapping(struct device *dev,
static int mtk_iommu_add_device(struct device *dev)
{
+ struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev);
struct dma_iommu_mapping *mtk_mapping;
struct of_phandle_args iommu_spec;
struct of_phandle_iterator it;
@@ -440,7 +445,7 @@ static int mtk_iommu_add_device(struct device *dev)
of_node_put(iommu_spec.np);
}
- if (!dev->iommu_fwspec || dev->iommu_fwspec->ops != &mtk_iommu_ops)
+ if (!fwspec || fwspec->ops != &mtk_iommu_ops)
return -ENODEV; /* Not a iommu client device */
/*
@@ -458,7 +463,7 @@ static int mtk_iommu_add_device(struct device *dev)
if (err)
return err;
- data = dev->iommu_fwspec->iommu_priv;
+ data = fwspec->iommu_priv;
mtk_mapping = data->dev->archdata.iommu;
err = arm_iommu_attach_device(dev, mtk_mapping);
if (err) {
@@ -471,12 +476,13 @@ static int mtk_iommu_add_device(struct device *dev)
static void mtk_iommu_remove_device(struct device *dev)
{
+ struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev);
struct mtk_iommu_data *data;
- if (!dev->iommu_fwspec || dev->iommu_fwspec->ops != &mtk_iommu_ops)
+ if (!fwspec || fwspec->ops != &mtk_iommu_ops)
return;
- data = dev->iommu_fwspec->iommu_priv;
+ data = fwspec->iommu_priv;
iommu_device_unlink(&data->iommu, dev);
iommu_group_remove_device(dev);
@@ -524,7 +530,7 @@ static int mtk_iommu_hw_init(const struct mtk_iommu_data *data)
return 0;
}
-static struct iommu_ops mtk_iommu_ops = {
+static const struct iommu_ops mtk_iommu_ops = {
.domain_alloc = mtk_iommu_domain_alloc,
.domain_free = mtk_iommu_domain_free,
.attach_dev = mtk_iommu_attach_device,
@@ -704,15 +710,4 @@ static int __init m4u_init(void)
{
return platform_driver_register(&mtk_iommu_driver);
}
-
-static void __exit m4u_exit(void)
-{
- return platform_driver_unregister(&mtk_iommu_driver);
-}
-
subsys_initcall(m4u_init);
-module_exit(m4u_exit);
-
-MODULE_DESCRIPTION("IOMMU API for MTK architected m4u v1 implementations");
-MODULE_AUTHOR("Honghui Zhang <honghui.zhang@mediatek.com>");
-MODULE_LICENSE("GPL v2");
diff --git a/drivers/iommu/of_iommu.c b/drivers/iommu/of_iommu.c
index c5dd63072529..d8947b28db2d 100644
--- a/drivers/iommu/of_iommu.c
+++ b/drivers/iommu/of_iommu.c
@@ -164,7 +164,7 @@ const struct iommu_ops *of_iommu_configure(struct device *dev,
struct device_node *master_np)
{
const struct iommu_ops *ops = NULL;
- struct iommu_fwspec *fwspec = dev->iommu_fwspec;
+ struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev);
int err = NO_IOMMU;
if (!master_np)
@@ -208,20 +208,24 @@ const struct iommu_ops *of_iommu_configure(struct device *dev,
}
}
+
/*
* Two success conditions can be represented by non-negative err here:
* >0 : there is no IOMMU, or one was unavailable for non-fatal reasons
* 0 : we found an IOMMU, and dev->fwspec is initialised appropriately
* <0 : any actual error
*/
- if (!err)
- ops = dev->iommu_fwspec->ops;
+ if (!err) {
+ /* The fwspec pointer changed, read it again */
+ fwspec = dev_iommu_fwspec_get(dev);
+ ops = fwspec->ops;
+ }
/*
* If we have reason to believe the IOMMU driver missed the initial
- * add_device callback for dev, replay it to get things in order.
+ * probe for dev, replay it to get things in order.
*/
- if (ops && ops->add_device && dev->bus && !dev->iommu_group)
- err = ops->add_device(dev);
+ if (dev->bus && !device_iommu_mapped(dev))
+ err = iommu_probe_device(dev);
/* Ignore all other errors apart from EPROBE_DEFER */
if (err == -EPROBE_DEFER) {
diff --git a/drivers/iommu/omap-iommu-debug.c b/drivers/iommu/omap-iommu-debug.c
index 50217548c3b8..4abc0ef522a8 100644
--- a/drivers/iommu/omap-iommu-debug.c
+++ b/drivers/iommu/omap-iommu-debug.c
@@ -159,7 +159,7 @@ static size_t omap_dump_tlb_entries(struct omap_iommu *obj, struct seq_file *s)
return 0;
}
-static int debug_read_tlb(struct seq_file *s, void *data)
+static int tlb_show(struct seq_file *s, void *data)
{
struct omap_iommu *obj = s->private;
@@ -210,7 +210,7 @@ static void dump_ioptable(struct seq_file *s)
spin_unlock(&obj->page_table_lock);
}
-static int debug_read_pagetable(struct seq_file *s, void *data)
+static int pagetable_show(struct seq_file *s, void *data)
{
struct omap_iommu *obj = s->private;
@@ -228,35 +228,22 @@ static int debug_read_pagetable(struct seq_file *s, void *data)
return 0;
}
-#define DEBUG_SEQ_FOPS_RO(name) \
- static int debug_open_##name(struct inode *inode, struct file *file) \
- { \
- return single_open(file, debug_read_##name, inode->i_private); \
- } \
- \
- static const struct file_operations debug_##name##_fops = { \
- .open = debug_open_##name, \
- .read = seq_read, \
- .llseek = seq_lseek, \
- .release = single_release, \
- }
-
#define DEBUG_FOPS_RO(name) \
- static const struct file_operations debug_##name##_fops = { \
+ static const struct file_operations name##_fops = { \
.open = simple_open, \
.read = debug_read_##name, \
.llseek = generic_file_llseek, \
}
DEBUG_FOPS_RO(regs);
-DEBUG_SEQ_FOPS_RO(tlb);
-DEBUG_SEQ_FOPS_RO(pagetable);
+DEFINE_SHOW_ATTRIBUTE(tlb);
+DEFINE_SHOW_ATTRIBUTE(pagetable);
#define __DEBUG_ADD_FILE(attr, mode) \
{ \
struct dentry *dent; \
dent = debugfs_create_file(#attr, mode, obj->debug_dir, \
- obj, &debug_##attr##_fops); \
+ obj, &attr##_fops); \
if (!dent) \
goto err; \
}
diff --git a/drivers/iommu/qcom_iommu.c b/drivers/iommu/qcom_iommu.c
index ee70e9921cf1..d8595f0a987d 100644
--- a/drivers/iommu/qcom_iommu.c
+++ b/drivers/iommu/qcom_iommu.c
@@ -29,7 +29,7 @@
#include <linux/iommu.h>
#include <linux/iopoll.h>
#include <linux/kconfig.h>
-#include <linux/module.h>
+#include <linux/init.h>
#include <linux/mutex.h>
#include <linux/of.h>
#include <linux/of_address.h>
@@ -354,7 +354,8 @@ static void qcom_iommu_domain_free(struct iommu_domain *domain)
static int qcom_iommu_attach_dev(struct iommu_domain *domain, struct device *dev)
{
- struct qcom_iommu_dev *qcom_iommu = to_iommu(dev->iommu_fwspec);
+ struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev);
+ struct qcom_iommu_dev *qcom_iommu = to_iommu(fwspec);
struct qcom_iommu_domain *qcom_domain = to_qcom_iommu_domain(domain);
int ret;
@@ -365,7 +366,7 @@ static int qcom_iommu_attach_dev(struct iommu_domain *domain, struct device *dev
/* Ensure that the domain is finalized */
pm_runtime_get_sync(qcom_iommu->dev);
- ret = qcom_iommu_init_domain(domain, qcom_iommu, dev->iommu_fwspec);
+ ret = qcom_iommu_init_domain(domain, qcom_iommu, fwspec);
pm_runtime_put_sync(qcom_iommu->dev);
if (ret < 0)
return ret;
@@ -387,7 +388,7 @@ static int qcom_iommu_attach_dev(struct iommu_domain *domain, struct device *dev
static void qcom_iommu_detach_dev(struct iommu_domain *domain, struct device *dev)
{
- struct iommu_fwspec *fwspec = dev->iommu_fwspec;
+ struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev);
struct qcom_iommu_dev *qcom_iommu = to_iommu(fwspec);
struct qcom_iommu_domain *qcom_domain = to_qcom_iommu_domain(domain);
unsigned i;
@@ -500,7 +501,7 @@ static bool qcom_iommu_capable(enum iommu_cap cap)
static int qcom_iommu_add_device(struct device *dev)
{
- struct qcom_iommu_dev *qcom_iommu = to_iommu(dev->iommu_fwspec);
+ struct qcom_iommu_dev *qcom_iommu = to_iommu(dev_iommu_fwspec_get(dev));
struct iommu_group *group;
struct device_link *link;
@@ -531,7 +532,7 @@ static int qcom_iommu_add_device(struct device *dev)
static void qcom_iommu_remove_device(struct device *dev)
{
- struct qcom_iommu_dev *qcom_iommu = to_iommu(dev->iommu_fwspec);
+ struct qcom_iommu_dev *qcom_iommu = to_iommu(dev_iommu_fwspec_get(dev));
if (!qcom_iommu)
return;
@@ -543,6 +544,7 @@ static void qcom_iommu_remove_device(struct device *dev)
static int qcom_iommu_of_xlate(struct device *dev, struct of_phandle_args *args)
{
+ struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev);
struct qcom_iommu_dev *qcom_iommu;
struct platform_device *iommu_pdev;
unsigned asid = args->args[0];
@@ -568,14 +570,14 @@ static int qcom_iommu_of_xlate(struct device *dev, struct of_phandle_args *args)
WARN_ON(asid > qcom_iommu->num_ctxs))
return -EINVAL;
- if (!dev->iommu_fwspec->iommu_priv) {
- dev->iommu_fwspec->iommu_priv = qcom_iommu;
+ if (!fwspec->iommu_priv) {
+ fwspec->iommu_priv = qcom_iommu;
} else {
/* make sure devices iommus dt node isn't referring to
* multiple different iommu devices. Multiple context
* banks are ok, but multiple devices are not:
*/
- if (WARN_ON(qcom_iommu != dev->iommu_fwspec->iommu_priv))
+ if (WARN_ON(qcom_iommu != fwspec->iommu_priv))
return -EINVAL;
}
@@ -908,7 +910,6 @@ static const struct of_device_id qcom_iommu_of_match[] = {
{ .compatible = "qcom,msm-iommu-v1" },
{ /* sentinel */ }
};
-MODULE_DEVICE_TABLE(of, qcom_iommu_of_match);
static struct platform_driver qcom_iommu_driver = {
.driver = {
@@ -934,15 +935,4 @@ static int __init qcom_iommu_init(void)
return ret;
}
-
-static void __exit qcom_iommu_exit(void)
-{
- platform_driver_unregister(&qcom_iommu_driver);
- platform_driver_unregister(&qcom_iommu_ctx_driver);
-}
-
-module_init(qcom_iommu_init);
-module_exit(qcom_iommu_exit);
-
-MODULE_DESCRIPTION("IOMMU API for QCOM IOMMU v1 implementations");
-MODULE_LICENSE("GPL v2");
+device_initcall(qcom_iommu_init);
diff --git a/drivers/iommu/rockchip-iommu.c b/drivers/iommu/rockchip-iommu.c
index ad3e2b97469e..c9ba9f377f63 100644
--- a/drivers/iommu/rockchip-iommu.c
+++ b/drivers/iommu/rockchip-iommu.c
@@ -1,4 +1,9 @@
/*
+ * IOMMU API for Rockchip
+ *
+ * Module Authors: Simon Xue <xxm@rock-chips.com>
+ * Daniel Kurtz <djkurtz@chromium.org>
+ *
* 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.
@@ -17,7 +22,7 @@
#include <linux/iopoll.h>
#include <linux/list.h>
#include <linux/mm.h>
-#include <linux/module.h>
+#include <linux/init.h>
#include <linux/of.h>
#include <linux/of_iommu.h>
#include <linux/of_platform.h>
@@ -1281,7 +1286,6 @@ static const struct of_device_id rk_iommu_dt_ids[] = {
{ .compatible = "rockchip,iommu" },
{ /* sentinel */ }
};
-MODULE_DEVICE_TABLE(of, rk_iommu_dt_ids);
static struct platform_driver rk_iommu_driver = {
.probe = rk_iommu_probe,
@@ -1299,8 +1303,3 @@ static int __init rk_iommu_init(void)
return platform_driver_register(&rk_iommu_driver);
}
subsys_initcall(rk_iommu_init);
-
-MODULE_DESCRIPTION("IOMMU API for Rockchip");
-MODULE_AUTHOR("Simon Xue <xxm@rock-chips.com> and Daniel Kurtz <djkurtz@chromium.org>");
-MODULE_ALIAS("platform:rockchip-iommu");
-MODULE_LICENSE("GPL v2");
diff --git a/drivers/iommu/tegra-gart.c b/drivers/iommu/tegra-gart.c
index 7b1361d57a17..da6a4e357b2b 100644
--- a/drivers/iommu/tegra-gart.c
+++ b/drivers/iommu/tegra-gart.c
@@ -3,6 +3,8 @@
*
* Copyright (c) 2010-2012, NVIDIA CORPORATION. All rights reserved.
*
+ * Author: Hiroshi DOYU <hdoyu@nvidia.com>
+ *
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
@@ -19,7 +21,8 @@
#define pr_fmt(fmt) "%s(): " fmt, __func__
-#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/moduleparam.h>
#include <linux/platform_device.h>
#include <linux/spinlock.h>
#include <linux/slab.h>
@@ -478,20 +481,6 @@ static int tegra_gart_probe(struct platform_device *pdev)
return 0;
}
-static int tegra_gart_remove(struct platform_device *pdev)
-{
- struct gart_device *gart = platform_get_drvdata(pdev);
-
- iommu_device_unregister(&gart->iommu);
- iommu_device_sysfs_remove(&gart->iommu);
-
- writel(0, gart->regs + GART_CONFIG);
- if (gart->savedata)
- vfree(gart->savedata);
- gart_handle = NULL;
- return 0;
-}
-
static const struct dev_pm_ops tegra_gart_pm_ops = {
.suspend = tegra_gart_suspend,
.resume = tegra_gart_resume,
@@ -501,34 +490,22 @@ static const struct of_device_id tegra_gart_of_match[] = {
{ .compatible = "nvidia,tegra20-gart", },
{ },
};
-MODULE_DEVICE_TABLE(of, tegra_gart_of_match);
static struct platform_driver tegra_gart_driver = {
.probe = tegra_gart_probe,
- .remove = tegra_gart_remove,
.driver = {
.name = "tegra-gart",
.pm = &tegra_gart_pm_ops,
.of_match_table = tegra_gart_of_match,
+ .suppress_bind_attrs = true,
},
};
-static int tegra_gart_init(void)
+static int __init tegra_gart_init(void)
{
return platform_driver_register(&tegra_gart_driver);
}
-
-static void __exit tegra_gart_exit(void)
-{
- platform_driver_unregister(&tegra_gart_driver);
-}
-
subsys_initcall(tegra_gart_init);
-module_exit(tegra_gart_exit);
-module_param(gart_debug, bool, 0644);
+module_param(gart_debug, bool, 0644);
MODULE_PARM_DESC(gart_debug, "Enable GART debugging");
-MODULE_DESCRIPTION("IOMMU API for GART in Tegra20");
-MODULE_AUTHOR("Hiroshi DOYU <hdoyu@nvidia.com>");
-MODULE_ALIAS("platform:tegra-gart");
-MODULE_LICENSE("GPL v2");
diff --git a/drivers/iommu/tegra-smmu.c b/drivers/iommu/tegra-smmu.c
index 0d03341317c4..3a5c7dc6dc57 100644
--- a/drivers/iommu/tegra-smmu.c
+++ b/drivers/iommu/tegra-smmu.c
@@ -846,7 +846,7 @@ static struct iommu_group *tegra_smmu_group_get(struct tegra_smmu *smmu,
static struct iommu_group *tegra_smmu_device_group(struct device *dev)
{
- struct iommu_fwspec *fwspec = dev->iommu_fwspec;
+ struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev);
struct tegra_smmu *smmu = dev->archdata.iommu;
struct iommu_group *group;
@@ -926,17 +926,7 @@ static int tegra_smmu_swgroups_show(struct seq_file *s, void *data)
return 0;
}
-static int tegra_smmu_swgroups_open(struct inode *inode, struct file *file)
-{
- return single_open(file, tegra_smmu_swgroups_show, inode->i_private);
-}
-
-static const struct file_operations tegra_smmu_swgroups_fops = {
- .open = tegra_smmu_swgroups_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
-};
+DEFINE_SHOW_ATTRIBUTE(tegra_smmu_swgroups);
static int tegra_smmu_clients_show(struct seq_file *s, void *data)
{
@@ -964,17 +954,7 @@ static int tegra_smmu_clients_show(struct seq_file *s, void *data)
return 0;
}
-static int tegra_smmu_clients_open(struct inode *inode, struct file *file)
-{
- return single_open(file, tegra_smmu_clients_show, inode->i_private);
-}
-
-static const struct file_operations tegra_smmu_clients_fops = {
- .open = tegra_smmu_clients_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
-};
+DEFINE_SHOW_ATTRIBUTE(tegra_smmu_clients);
static void tegra_smmu_debugfs_init(struct tegra_smmu *smmu)
{
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-21 12:58:23 +0000