summaryrefslogtreecommitdiffstats
path: root/drivers/iommu
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/iommu')
-rw-r--r--drivers/iommu/Kconfig5
-rw-r--r--drivers/iommu/amd_iommu.c4
-rw-r--r--drivers/iommu/amd_iommu_types.h2
-rw-r--r--drivers/iommu/arm-smmu-v3.c214
-rw-r--r--drivers/iommu/arm-smmu.c55
-rw-r--r--drivers/iommu/dma-iommu.c16
-rw-r--r--drivers/iommu/dmar.c24
-rw-r--r--drivers/iommu/intel-iommu-debugfs.c51
-rw-r--r--drivers/iommu/intel-iommu.c31
-rw-r--r--drivers/iommu/intel-svm.c9
-rw-r--r--drivers/iommu/io-pgtable-arm.c4
-rw-r--r--drivers/iommu/iommu.c46
-rw-r--r--drivers/iommu/ipmmu-vmsa.c7
-rw-r--r--drivers/iommu/mtk_iommu.c13
-rw-r--r--drivers/iommu/mtk_iommu_v1.c14
-rw-r--r--drivers/iommu/qcom_iommu.c63
-rw-r--r--drivers/iommu/tegra-gart.c2
-rw-r--r--drivers/iommu/virtio-iommu.c42
18 files changed, 408 insertions, 194 deletions
diff --git a/drivers/iommu/Kconfig b/drivers/iommu/Kconfig
index ff41c3d9e11f..58b4a4dbfc78 100644
--- a/drivers/iommu/Kconfig
+++ b/drivers/iommu/Kconfig
@@ -188,6 +188,7 @@ config INTEL_IOMMU
select NEED_DMA_MAP_STATE
select DMAR_TABLE
select SWIOTLB
+ select IOASID
help
DMA remapping (DMAR) devices support enables independent address
translations for Direct Memory Access (DMA) from devices.
@@ -506,8 +507,8 @@ config HYPERV_IOMMU
guests to run with x2APIC mode enabled.
config VIRTIO_IOMMU
- bool "Virtio IOMMU driver"
- depends on VIRTIO=y
+ tristate "Virtio IOMMU driver"
+ depends on VIRTIO
depends on ARM64
select IOMMU_API
select INTERVAL_TREE
diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c
index aac132bd1ef0..20cce366e951 100644
--- a/drivers/iommu/amd_iommu.c
+++ b/drivers/iommu/amd_iommu.c
@@ -3826,7 +3826,7 @@ int amd_iommu_activate_guest_mode(void *data)
entry->lo.fields_vapic.ga_tag = ir_data->ga_tag;
return modify_irte_ga(ir_data->irq_2_irte.devid,
- ir_data->irq_2_irte.index, entry, NULL);
+ ir_data->irq_2_irte.index, entry, ir_data);
}
EXPORT_SYMBOL(amd_iommu_activate_guest_mode);
@@ -3852,7 +3852,7 @@ int amd_iommu_deactivate_guest_mode(void *data)
APICID_TO_IRTE_DEST_HI(cfg->dest_apicid);
return modify_irte_ga(ir_data->irq_2_irte.devid,
- ir_data->irq_2_irte.index, entry, NULL);
+ ir_data->irq_2_irte.index, entry, ir_data);
}
EXPORT_SYMBOL(amd_iommu_deactivate_guest_mode);
diff --git a/drivers/iommu/amd_iommu_types.h b/drivers/iommu/amd_iommu_types.h
index f8d01d6b00da..ca8c4522045b 100644
--- a/drivers/iommu/amd_iommu_types.h
+++ b/drivers/iommu/amd_iommu_types.h
@@ -348,7 +348,7 @@
#define DTE_GCR3_VAL_A(x) (((x) >> 12) & 0x00007ULL)
#define DTE_GCR3_VAL_B(x) (((x) >> 15) & 0x0ffffULL)
-#define DTE_GCR3_VAL_C(x) (((x) >> 31) & 0xfffffULL)
+#define DTE_GCR3_VAL_C(x) (((x) >> 31) & 0x1fffffULL)
#define DTE_GCR3_INDEX_A 0
#define DTE_GCR3_INDEX_B 1
diff --git a/drivers/iommu/arm-smmu-v3.c b/drivers/iommu/arm-smmu-v3.c
index aa3ac2a03807..82508730feb7 100644
--- a/drivers/iommu/arm-smmu-v3.c
+++ b/drivers/iommu/arm-smmu-v3.c
@@ -69,6 +69,9 @@
#define IDR1_SSIDSIZE GENMASK(10, 6)
#define IDR1_SIDSIZE GENMASK(5, 0)
+#define ARM_SMMU_IDR3 0xc
+#define IDR3_RIL (1 << 10)
+
#define ARM_SMMU_IDR5 0x14
#define IDR5_STALL_MAX GENMASK(31, 16)
#define IDR5_GRAN64K (1 << 6)
@@ -346,9 +349,14 @@
#define CMDQ_CFGI_1_LEAF (1UL << 0)
#define CMDQ_CFGI_1_RANGE GENMASK_ULL(4, 0)
+#define CMDQ_TLBI_0_NUM GENMASK_ULL(16, 12)
+#define CMDQ_TLBI_RANGE_NUM_MAX 31
+#define CMDQ_TLBI_0_SCALE GENMASK_ULL(24, 20)
#define CMDQ_TLBI_0_VMID GENMASK_ULL(47, 32)
#define CMDQ_TLBI_0_ASID GENMASK_ULL(63, 48)
#define CMDQ_TLBI_1_LEAF (1UL << 0)
+#define CMDQ_TLBI_1_TTL GENMASK_ULL(9, 8)
+#define CMDQ_TLBI_1_TG GENMASK_ULL(11, 10)
#define CMDQ_TLBI_1_VA_MASK GENMASK_ULL(63, 12)
#define CMDQ_TLBI_1_IPA_MASK GENMASK_ULL(51, 12)
@@ -473,9 +481,13 @@ struct arm_smmu_cmdq_ent {
#define CMDQ_OP_TLBI_S2_IPA 0x2a
#define CMDQ_OP_TLBI_NSNH_ALL 0x30
struct {
+ u8 num;
+ u8 scale;
u16 asid;
u16 vmid;
bool leaf;
+ u8 ttl;
+ u8 tg;
u64 addr;
} tlbi;
@@ -548,6 +560,11 @@ struct arm_smmu_cmdq {
atomic_t lock;
};
+struct arm_smmu_cmdq_batch {
+ u64 cmds[CMDQ_BATCH_ENTRIES * CMDQ_ENT_DWORDS];
+ int num;
+};
+
struct arm_smmu_evtq {
struct arm_smmu_queue q;
u32 max_stalls;
@@ -627,6 +644,7 @@ struct arm_smmu_device {
#define ARM_SMMU_FEAT_HYP (1 << 12)
#define ARM_SMMU_FEAT_STALL_FORCE (1 << 13)
#define ARM_SMMU_FEAT_VAX (1 << 14)
+#define ARM_SMMU_FEAT_RANGE_INV (1 << 15)
u32 features;
#define ARM_SMMU_OPT_SKIP_PREFETCH (1 << 0)
@@ -895,14 +913,22 @@ static int arm_smmu_cmdq_build_cmd(u64 *cmd, struct arm_smmu_cmdq_ent *ent)
cmd[1] |= FIELD_PREP(CMDQ_CFGI_1_RANGE, 31);
break;
case CMDQ_OP_TLBI_NH_VA:
+ cmd[0] |= FIELD_PREP(CMDQ_TLBI_0_NUM, ent->tlbi.num);
+ cmd[0] |= FIELD_PREP(CMDQ_TLBI_0_SCALE, ent->tlbi.scale);
cmd[0] |= FIELD_PREP(CMDQ_TLBI_0_VMID, ent->tlbi.vmid);
cmd[0] |= FIELD_PREP(CMDQ_TLBI_0_ASID, ent->tlbi.asid);
cmd[1] |= FIELD_PREP(CMDQ_TLBI_1_LEAF, ent->tlbi.leaf);
+ cmd[1] |= FIELD_PREP(CMDQ_TLBI_1_TTL, ent->tlbi.ttl);
+ cmd[1] |= FIELD_PREP(CMDQ_TLBI_1_TG, ent->tlbi.tg);
cmd[1] |= ent->tlbi.addr & CMDQ_TLBI_1_VA_MASK;
break;
case CMDQ_OP_TLBI_S2_IPA:
+ cmd[0] |= FIELD_PREP(CMDQ_TLBI_0_NUM, ent->tlbi.num);
+ cmd[0] |= FIELD_PREP(CMDQ_TLBI_0_SCALE, ent->tlbi.scale);
cmd[0] |= FIELD_PREP(CMDQ_TLBI_0_VMID, ent->tlbi.vmid);
cmd[1] |= FIELD_PREP(CMDQ_TLBI_1_LEAF, ent->tlbi.leaf);
+ cmd[1] |= FIELD_PREP(CMDQ_TLBI_1_TTL, ent->tlbi.ttl);
+ cmd[1] |= FIELD_PREP(CMDQ_TLBI_1_TG, ent->tlbi.tg);
cmd[1] |= ent->tlbi.addr & CMDQ_TLBI_1_IPA_MASK;
break;
case CMDQ_OP_TLBI_NH_ASID:
@@ -1482,6 +1508,24 @@ static int arm_smmu_cmdq_issue_sync(struct arm_smmu_device *smmu)
return arm_smmu_cmdq_issue_cmdlist(smmu, NULL, 0, true);
}
+static void arm_smmu_cmdq_batch_add(struct arm_smmu_device *smmu,
+ struct arm_smmu_cmdq_batch *cmds,
+ struct arm_smmu_cmdq_ent *cmd)
+{
+ if (cmds->num == CMDQ_BATCH_ENTRIES) {
+ arm_smmu_cmdq_issue_cmdlist(smmu, cmds->cmds, cmds->num, false);
+ cmds->num = 0;
+ }
+ arm_smmu_cmdq_build_cmd(&cmds->cmds[cmds->num * CMDQ_ENT_DWORDS], cmd);
+ cmds->num++;
+}
+
+static int arm_smmu_cmdq_batch_submit(struct arm_smmu_device *smmu,
+ struct arm_smmu_cmdq_batch *cmds)
+{
+ return arm_smmu_cmdq_issue_cmdlist(smmu, cmds->cmds, cmds->num, true);
+}
+
/* Context descriptor manipulation functions */
static void arm_smmu_sync_cd(struct arm_smmu_domain *smmu_domain,
int ssid, bool leaf)
@@ -1489,6 +1533,7 @@ static void arm_smmu_sync_cd(struct arm_smmu_domain *smmu_domain,
size_t i;
unsigned long flags;
struct arm_smmu_master *master;
+ struct arm_smmu_cmdq_batch cmds = {};
struct arm_smmu_device *smmu = smmu_domain->smmu;
struct arm_smmu_cmdq_ent cmd = {
.opcode = CMDQ_OP_CFGI_CD,
@@ -1502,12 +1547,12 @@ static void arm_smmu_sync_cd(struct arm_smmu_domain *smmu_domain,
list_for_each_entry(master, &smmu_domain->devices, domain_head) {
for (i = 0; i < master->num_sids; i++) {
cmd.cfgi.sid = master->sids[i];
- arm_smmu_cmdq_issue_cmd(smmu, &cmd);
+ arm_smmu_cmdq_batch_add(smmu, &cmds, &cmd);
}
}
spin_unlock_irqrestore(&smmu_domain->devices_lock, flags);
- arm_smmu_cmdq_issue_sync(smmu);
+ arm_smmu_cmdq_batch_submit(smmu, &cmds);
}
static int arm_smmu_alloc_cd_leaf_table(struct arm_smmu_device *smmu,
@@ -1531,6 +1576,7 @@ static void arm_smmu_write_cd_l1_desc(__le64 *dst,
u64 val = (l1_desc->l2ptr_dma & CTXDESC_L1_DESC_L2PTR_MASK) |
CTXDESC_L1_DESC_V;
+ /* See comment in arm_smmu_write_ctx_desc() */
WRITE_ONCE(*dst, cpu_to_le64(val));
}
@@ -1726,7 +1772,8 @@ arm_smmu_write_strtab_l1_desc(__le64 *dst, struct arm_smmu_strtab_l1_desc *desc)
val |= FIELD_PREP(STRTAB_L1_DESC_SPAN, desc->span);
val |= desc->l2ptr_dma & STRTAB_L1_DESC_L2PTR_MASK;
- *dst = cpu_to_le64(val);
+ /* See comment in arm_smmu_write_ctx_desc() */
+ WRITE_ONCE(*dst, cpu_to_le64(val));
}
static void arm_smmu_sync_ste_for_sid(struct arm_smmu_device *smmu, u32 sid)
@@ -2132,17 +2179,16 @@ arm_smmu_atc_inv_to_cmd(int ssid, unsigned long iova, size_t size,
cmd->atc.size = log2_span;
}
-static int arm_smmu_atc_inv_master(struct arm_smmu_master *master,
- struct arm_smmu_cmdq_ent *cmd)
+static int arm_smmu_atc_inv_master(struct arm_smmu_master *master)
{
int i;
+ struct arm_smmu_cmdq_ent cmd;
- if (!master->ats_enabled)
- return 0;
+ arm_smmu_atc_inv_to_cmd(0, 0, 0, &cmd);
for (i = 0; i < master->num_sids; i++) {
- cmd->atc.sid = master->sids[i];
- arm_smmu_cmdq_issue_cmd(master->smmu, cmd);
+ cmd.atc.sid = master->sids[i];
+ arm_smmu_cmdq_issue_cmd(master->smmu, &cmd);
}
return arm_smmu_cmdq_issue_sync(master->smmu);
@@ -2151,10 +2197,11 @@ static int arm_smmu_atc_inv_master(struct arm_smmu_master *master,
static int arm_smmu_atc_inv_domain(struct arm_smmu_domain *smmu_domain,
int ssid, unsigned long iova, size_t size)
{
- int ret = 0;
+ int i;
unsigned long flags;
struct arm_smmu_cmdq_ent cmd;
struct arm_smmu_master *master;
+ struct arm_smmu_cmdq_batch cmds = {};
if (!(smmu_domain->smmu->features & ARM_SMMU_FEAT_ATS))
return 0;
@@ -2179,11 +2226,18 @@ static int arm_smmu_atc_inv_domain(struct arm_smmu_domain *smmu_domain,
arm_smmu_atc_inv_to_cmd(ssid, iova, size, &cmd);
spin_lock_irqsave(&smmu_domain->devices_lock, flags);
- list_for_each_entry(master, &smmu_domain->devices, domain_head)
- ret |= arm_smmu_atc_inv_master(master, &cmd);
+ list_for_each_entry(master, &smmu_domain->devices, domain_head) {
+ if (!master->ats_enabled)
+ continue;
+
+ for (i = 0; i < master->num_sids; i++) {
+ cmd.atc.sid = master->sids[i];
+ arm_smmu_cmdq_batch_add(smmu_domain->smmu, &cmds, &cmd);
+ }
+ }
spin_unlock_irqrestore(&smmu_domain->devices_lock, flags);
- return ret ? -ETIMEDOUT : 0;
+ return arm_smmu_cmdq_batch_submit(smmu_domain->smmu, &cmds);
}
/* IO_PGTABLE API */
@@ -2218,10 +2272,10 @@ static void arm_smmu_tlb_inv_range(unsigned long iova, size_t size,
size_t granule, bool leaf,
struct arm_smmu_domain *smmu_domain)
{
- u64 cmds[CMDQ_BATCH_ENTRIES * CMDQ_ENT_DWORDS];
struct arm_smmu_device *smmu = smmu_domain->smmu;
- unsigned long start = iova, end = iova + size;
- int i = 0;
+ unsigned long start = iova, end = iova + size, num_pages = 0, tg = 0;
+ size_t inv_range = granule;
+ struct arm_smmu_cmdq_batch cmds = {};
struct arm_smmu_cmdq_ent cmd = {
.tlbi = {
.leaf = leaf,
@@ -2239,19 +2293,50 @@ static void arm_smmu_tlb_inv_range(unsigned long iova, size_t size,
cmd.tlbi.vmid = smmu_domain->s2_cfg.vmid;
}
+ if (smmu->features & ARM_SMMU_FEAT_RANGE_INV) {
+ /* Get the leaf page size */
+ tg = __ffs(smmu_domain->domain.pgsize_bitmap);
+
+ /* Convert page size of 12,14,16 (log2) to 1,2,3 */
+ cmd.tlbi.tg = (tg - 10) / 2;
+
+ /* Determine what level the granule is at */
+ cmd.tlbi.ttl = 4 - ((ilog2(granule) - 3) / (tg - 3));
+
+ num_pages = size >> tg;
+ }
+
while (iova < end) {
- if (i == CMDQ_BATCH_ENTRIES) {
- arm_smmu_cmdq_issue_cmdlist(smmu, cmds, i, false);
- i = 0;
+ if (smmu->features & ARM_SMMU_FEAT_RANGE_INV) {
+ /*
+ * On each iteration of the loop, the range is 5 bits
+ * worth of the aligned size remaining.
+ * The range in pages is:
+ *
+ * range = (num_pages & (0x1f << __ffs(num_pages)))
+ */
+ unsigned long scale, num;
+
+ /* Determine the power of 2 multiple number of pages */
+ scale = __ffs(num_pages);
+ cmd.tlbi.scale = scale;
+
+ /* Determine how many chunks of 2^scale size we have */
+ num = (num_pages >> scale) & CMDQ_TLBI_RANGE_NUM_MAX;
+ cmd.tlbi.num = num - 1;
+
+ /* range is num * 2^scale * pgsize */
+ inv_range = num << (scale + tg);
+
+ /* Clear out the lower order bits for the next iteration */
+ num_pages -= num << scale;
}
cmd.tlbi.addr = iova;
- arm_smmu_cmdq_build_cmd(&cmds[i * CMDQ_ENT_DWORDS], &cmd);
- iova += granule;
- i++;
+ arm_smmu_cmdq_batch_add(smmu, &cmds, &cmd);
+ iova += inv_range;
}
-
- arm_smmu_cmdq_issue_cmdlist(smmu, cmds, i, true);
+ arm_smmu_cmdq_batch_submit(smmu, &cmds);
/*
* Unfortunately, this can't be leaf-only since we may have
@@ -2611,7 +2696,6 @@ static void arm_smmu_enable_ats(struct arm_smmu_master *master)
static void arm_smmu_disable_ats(struct arm_smmu_master *master)
{
- struct arm_smmu_cmdq_ent cmd;
struct arm_smmu_domain *smmu_domain = master->domain;
if (!master->ats_enabled)
@@ -2623,11 +2707,57 @@ static void arm_smmu_disable_ats(struct arm_smmu_master *master)
* ATC invalidation via the SMMU.
*/
wmb();
- arm_smmu_atc_inv_to_cmd(0, 0, 0, &cmd);
- arm_smmu_atc_inv_master(master, &cmd);
+ arm_smmu_atc_inv_master(master);
atomic_dec(&smmu_domain->nr_ats_masters);
}
+static int arm_smmu_enable_pasid(struct arm_smmu_master *master)
+{
+ int ret;
+ int features;
+ int num_pasids;
+ struct pci_dev *pdev;
+
+ if (!dev_is_pci(master->dev))
+ return -ENODEV;
+
+ pdev = to_pci_dev(master->dev);
+
+ features = pci_pasid_features(pdev);
+ if (features < 0)
+ return features;
+
+ num_pasids = pci_max_pasids(pdev);
+ if (num_pasids <= 0)
+ return num_pasids;
+
+ ret = pci_enable_pasid(pdev, features);
+ if (ret) {
+ dev_err(&pdev->dev, "Failed to enable PASID\n");
+ return ret;
+ }
+
+ master->ssid_bits = min_t(u8, ilog2(num_pasids),
+ master->smmu->ssid_bits);
+ return 0;
+}
+
+static void arm_smmu_disable_pasid(struct arm_smmu_master *master)
+{
+ struct pci_dev *pdev;
+
+ if (!dev_is_pci(master->dev))
+ return;
+
+ pdev = to_pci_dev(master->dev);
+
+ if (!pdev->pasid_enabled)
+ return;
+
+ master->ssid_bits = 0;
+ pci_disable_pasid(pdev);
+}
+
static void arm_smmu_detach_dev(struct arm_smmu_master *master)
{
unsigned long flags;
@@ -2659,7 +2789,7 @@ static int arm_smmu_attach_dev(struct iommu_domain *domain, struct device *dev)
if (!fwspec)
return -ENOENT;
- master = fwspec->iommu_priv;
+ master = dev_iommu_priv_get(dev);
smmu = master->smmu;
arm_smmu_detach_dev(master);
@@ -2795,7 +2925,7 @@ static int arm_smmu_add_device(struct device *dev)
if (!fwspec || fwspec->ops != &arm_smmu_ops)
return -ENODEV;
- if (WARN_ON_ONCE(fwspec->iommu_priv))
+ if (WARN_ON_ONCE(dev_iommu_priv_get(dev)))
return -EBUSY;
smmu = arm_smmu_get_by_fwnode(fwspec->iommu_fwnode);
@@ -2810,7 +2940,7 @@ static int arm_smmu_add_device(struct device *dev)
master->smmu = smmu;
master->sids = fwspec->ids;
master->num_sids = fwspec->num_ids;
- fwspec->iommu_priv = master;
+ dev_iommu_priv_set(dev, master);
/* Check the SIDs are in range of the SMMU and our stream table */
for (i = 0; i < master->num_sids; i++) {
@@ -2831,13 +2961,23 @@ static int arm_smmu_add_device(struct device *dev)
master->ssid_bits = min(smmu->ssid_bits, fwspec->num_pasid_bits);
+ /*
+ * Note that PASID must be enabled before, and disabled after ATS:
+ * PCI Express Base 4.0r1.0 - 10.5.1.3 ATS Control Register
+ *
+ * Behavior is undefined if this bit is Set and the value of the PASID
+ * Enable, Execute Requested Enable, or Privileged Mode Requested bits
+ * are changed.
+ */
+ arm_smmu_enable_pasid(master);
+
if (!(smmu->features & ARM_SMMU_FEAT_2_LVL_CDTAB))
master->ssid_bits = min_t(u8, master->ssid_bits,
CTXDESC_LINEAR_CDMAX);
ret = iommu_device_link(&smmu->iommu, dev);
if (ret)
- goto err_free_master;
+ goto err_disable_pasid;
group = iommu_group_get_for_dev(dev);
if (IS_ERR(group)) {
@@ -2850,9 +2990,11 @@ static int arm_smmu_add_device(struct device *dev)
err_unlink:
iommu_device_unlink(&smmu->iommu, dev);
+err_disable_pasid:
+ arm_smmu_disable_pasid(master);
err_free_master:
kfree(master);
- fwspec->iommu_priv = NULL;
+ dev_iommu_priv_set(dev, NULL);
return ret;
}
@@ -2865,11 +3007,12 @@ static void arm_smmu_remove_device(struct device *dev)
if (!fwspec || fwspec->ops != &arm_smmu_ops)
return;
- master = fwspec->iommu_priv;
+ master = dev_iommu_priv_get(dev);
smmu = master->smmu;
arm_smmu_detach_dev(master);
iommu_group_remove_device(dev);
iommu_device_unlink(&smmu->iommu, dev);
+ arm_smmu_disable_pasid(master);
kfree(master);
iommu_fwspec_free(dev);
}
@@ -3700,6 +3843,11 @@ static int arm_smmu_device_hw_probe(struct arm_smmu_device *smmu)
if (smmu->sid_bits <= STRTAB_SPLIT)
smmu->features &= ~ARM_SMMU_FEAT_2_LVL_STRTAB;
+ /* IDR3 */
+ reg = readl_relaxed(smmu->base + ARM_SMMU_IDR3);
+ if (FIELD_GET(IDR3_RIL, reg))
+ smmu->features |= ARM_SMMU_FEAT_RANGE_INV;
+
/* IDR5 */
reg = readl_relaxed(smmu->base + ARM_SMMU_IDR5);
diff --git a/drivers/iommu/arm-smmu.c b/drivers/iommu/arm-smmu.c
index 16c4b87af42b..a6a5796e9c41 100644
--- a/drivers/iommu/arm-smmu.c
+++ b/drivers/iommu/arm-smmu.c
@@ -98,12 +98,10 @@ struct arm_smmu_master_cfg {
s16 smendx[];
};
#define INVALID_SMENDX -1
-#define __fwspec_cfg(fw) ((struct arm_smmu_master_cfg *)fw->iommu_priv)
-#define fwspec_smmu(fw) (__fwspec_cfg(fw)->smmu)
-#define fwspec_smendx(fw, i) \
- (i >= fw->num_ids ? INVALID_SMENDX : __fwspec_cfg(fw)->smendx[i])
-#define for_each_cfg_sme(fw, i, idx) \
- for (i = 0; idx = fwspec_smendx(fw, i), i < fw->num_ids; ++i)
+#define cfg_smendx(cfg, fw, i) \
+ (i >= fw->num_ids ? INVALID_SMENDX : cfg->smendx[i])
+#define for_each_cfg_sme(cfg, fw, i, idx) \
+ for (i = 0; idx = cfg_smendx(cfg, fw, i), i < fw->num_ids; ++i)
static bool using_legacy_binding, using_generic_binding;
@@ -1061,7 +1059,7 @@ 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_get(dev);
- struct arm_smmu_master_cfg *cfg = fwspec->iommu_priv;
+ struct arm_smmu_master_cfg *cfg = dev_iommu_priv_get(dev);
struct arm_smmu_device *smmu = cfg->smmu;
struct arm_smmu_smr *smrs = smmu->smrs;
struct iommu_group *group;
@@ -1069,7 +1067,7 @@ static int arm_smmu_master_alloc_smes(struct device *dev)
mutex_lock(&smmu->stream_map_mutex);
/* Figure out a viable stream map entry allocation */
- for_each_cfg_sme(fwspec, i, idx) {
+ for_each_cfg_sme(cfg, fwspec, i, idx) {
u16 sid = FIELD_GET(ARM_SMMU_SMR_ID, fwspec->ids[i]);
u16 mask = FIELD_GET(ARM_SMMU_SMR_MASK, fwspec->ids[i]);
@@ -1100,7 +1098,7 @@ static int arm_smmu_master_alloc_smes(struct device *dev)
iommu_group_put(group);
/* It worked! Now, poke the actual hardware */
- for_each_cfg_sme(fwspec, i, idx) {
+ for_each_cfg_sme(cfg, fwspec, i, idx) {
arm_smmu_write_sme(smmu, idx);
smmu->s2crs[idx].group = group;
}
@@ -1117,14 +1115,14 @@ out_err:
return ret;
}
-static void arm_smmu_master_free_smes(struct iommu_fwspec *fwspec)
+static void arm_smmu_master_free_smes(struct arm_smmu_master_cfg *cfg,
+ struct iommu_fwspec *fwspec)
{
- struct arm_smmu_device *smmu = fwspec_smmu(fwspec);
- struct arm_smmu_master_cfg *cfg = fwspec->iommu_priv;
+ struct arm_smmu_device *smmu = cfg->smmu;
int i, idx;
mutex_lock(&smmu->stream_map_mutex);
- for_each_cfg_sme(fwspec, i, idx) {
+ for_each_cfg_sme(cfg, fwspec, i, idx) {
if (arm_smmu_free_sme(smmu, idx))
arm_smmu_write_sme(smmu, idx);
cfg->smendx[i] = INVALID_SMENDX;
@@ -1133,6 +1131,7 @@ static void arm_smmu_master_free_smes(struct iommu_fwspec *fwspec)
}
static int arm_smmu_domain_add_master(struct arm_smmu_domain *smmu_domain,
+ struct arm_smmu_master_cfg *cfg,
struct iommu_fwspec *fwspec)
{
struct arm_smmu_device *smmu = smmu_domain->smmu;
@@ -1146,7 +1145,7 @@ static int arm_smmu_domain_add_master(struct arm_smmu_domain *smmu_domain,
else
type = S2CR_TYPE_TRANS;
- for_each_cfg_sme(fwspec, i, idx) {
+ for_each_cfg_sme(cfg, fwspec, i, idx) {
if (type == s2cr[idx].type && cbndx == s2cr[idx].cbndx)
continue;
@@ -1160,10 +1159,11 @@ 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 arm_smmu_domain *smmu_domain = to_smmu_domain(domain);
struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev);
+ struct arm_smmu_master_cfg *cfg;
struct arm_smmu_device *smmu;
- struct arm_smmu_domain *smmu_domain = to_smmu_domain(domain);
+ int ret;
if (!fwspec || fwspec->ops != &arm_smmu_ops) {
dev_err(dev, "cannot attach to SMMU, is it on the same bus?\n");
@@ -1177,10 +1177,11 @@ static int arm_smmu_attach_dev(struct iommu_domain *domain, struct device *dev)
* domains, just say no (but more politely than by dereferencing NULL).
* This should be at least a WARN_ON once that's sorted.
*/
- if (!fwspec->iommu_priv)
+ cfg = dev_iommu_priv_get(dev);
+ if (!cfg)
return -ENODEV;
- smmu = fwspec_smmu(fwspec);
+ smmu = cfg->smmu;
ret = arm_smmu_rpm_get(smmu);
if (ret < 0)
@@ -1204,7 +1205,7 @@ static int arm_smmu_attach_dev(struct iommu_domain *domain, struct device *dev)
}
/* Looks ok, so add the device to the domain */
- ret = arm_smmu_domain_add_master(smmu_domain, fwspec);
+ ret = arm_smmu_domain_add_master(smmu_domain, cfg, fwspec);
/*
* Setup an autosuspend delay to avoid bouncing runpm state.
@@ -1383,7 +1384,7 @@ struct arm_smmu_device *arm_smmu_get_by_fwnode(struct fwnode_handle *fwnode)
static int arm_smmu_add_device(struct device *dev)
{
- struct arm_smmu_device *smmu;
+ struct arm_smmu_device *smmu = NULL;
struct arm_smmu_master_cfg *cfg;
struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev);
int i, ret;
@@ -1429,7 +1430,7 @@ static int arm_smmu_add_device(struct device *dev)
goto out_free;
cfg->smmu = smmu;
- fwspec->iommu_priv = cfg;
+ dev_iommu_priv_set(dev, cfg);
while (i--)
cfg->smendx[i] = INVALID_SMENDX;
@@ -1467,7 +1468,7 @@ static void arm_smmu_remove_device(struct device *dev)
if (!fwspec || fwspec->ops != &arm_smmu_ops)
return;
- cfg = fwspec->iommu_priv;
+ cfg = dev_iommu_priv_get(dev);
smmu = cfg->smmu;
ret = arm_smmu_rpm_get(smmu);
@@ -1475,23 +1476,25 @@ static void arm_smmu_remove_device(struct device *dev)
return;
iommu_device_unlink(&smmu->iommu, dev);
- arm_smmu_master_free_smes(fwspec);
+ arm_smmu_master_free_smes(cfg, fwspec);
arm_smmu_rpm_put(smmu);
+ dev_iommu_priv_set(dev, NULL);
iommu_group_remove_device(dev);
- kfree(fwspec->iommu_priv);
+ kfree(cfg);
iommu_fwspec_free(dev);
}
static struct iommu_group *arm_smmu_device_group(struct device *dev)
{
+ struct arm_smmu_master_cfg *cfg = dev_iommu_priv_get(dev);
struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev);
- struct arm_smmu_device *smmu = fwspec_smmu(fwspec);
+ struct arm_smmu_device *smmu = cfg->smmu;
struct iommu_group *group = NULL;
int i, idx;
- for_each_cfg_sme(fwspec, i, idx) {
+ for_each_cfg_sme(cfg, fwspec, i, idx) {
if (group && smmu->s2crs[idx].group &&
group != smmu->s2crs[idx].group)
return ERR_PTR(-EINVAL);
diff --git a/drivers/iommu/dma-iommu.c b/drivers/iommu/dma-iommu.c
index a2e96a5fd9a7..ba128d1cdaee 100644
--- a/drivers/iommu/dma-iommu.c
+++ b/drivers/iommu/dma-iommu.c
@@ -177,15 +177,15 @@ static int cookie_init_hw_msi_region(struct iommu_dma_cookie *cookie,
start -= iova_offset(iovad, start);
num_pages = iova_align(iovad, end - start) >> iova_shift(iovad);
- msi_page = kcalloc(num_pages, sizeof(*msi_page), GFP_KERNEL);
- if (!msi_page)
- return -ENOMEM;
-
for (i = 0; i < num_pages; i++) {
- msi_page[i].phys = start;
- msi_page[i].iova = start;
- INIT_LIST_HEAD(&msi_page[i].list);
- list_add(&msi_page[i].list, &cookie->msi_page_list);
+ msi_page = kmalloc(sizeof(*msi_page), GFP_KERNEL);
+ if (!msi_page)
+ return -ENOMEM;
+
+ msi_page->phys = start;
+ msi_page->iova = start;
+ INIT_LIST_HEAD(&msi_page->list);
+ list_add(&msi_page->list, &cookie->msi_page_list);
start += iovad->granule;
}
diff --git a/drivers/iommu/dmar.c b/drivers/iommu/dmar.c
index 071bb42bbbc5..f77dae7ba7d4 100644
--- a/drivers/iommu/dmar.c
+++ b/drivers/iommu/dmar.c
@@ -28,6 +28,7 @@
#include <linux/slab.h>
#include <linux/iommu.h>
#include <linux/numa.h>
+#include <linux/limits.h>
#include <asm/irq_remapping.h>
#include <asm/iommu_table.h>
@@ -128,6 +129,13 @@ dmar_alloc_pci_notify_info(struct pci_dev *dev, unsigned long event)
BUG_ON(dev->is_virtfn);
+ /*
+ * Ignore devices that have a domain number higher than what can
+ * be looked up in DMAR, e.g. VMD subdevices with domain 0x10000
+ */
+ if (pci_domain_nr(dev->bus) > U16_MAX)
+ return NULL;
+
/* Only generate path[] for device addition event */
if (event == BUS_NOTIFY_ADD_DEVICE)
for (tmp = dev; tmp; tmp = tmp->bus->self)
@@ -363,7 +371,8 @@ dmar_find_dmaru(struct acpi_dmar_hardware_unit *drhd)
{
struct dmar_drhd_unit *dmaru;
- list_for_each_entry_rcu(dmaru, &dmar_drhd_units, list)
+ list_for_each_entry_rcu(dmaru, &dmar_drhd_units, list,
+ dmar_rcu_check())
if (dmaru->segment == drhd->segment &&
dmaru->reg_base_addr == drhd->address)
return dmaru;
@@ -440,12 +449,13 @@ static int __init dmar_parse_one_andd(struct acpi_dmar_header *header,
/* Check for NUL termination within the designated length */
if (strnlen(andd->device_name, header->length - 8) == header->length - 8) {
- WARN_TAINT(1, TAINT_FIRMWARE_WORKAROUND,
+ pr_warn(FW_BUG
"Your BIOS is broken; ANDD object name is not NUL-terminated\n"
"BIOS vendor: %s; Ver: %s; Product Version: %s\n",
dmi_get_system_info(DMI_BIOS_VENDOR),
dmi_get_system_info(DMI_BIOS_VERSION),
dmi_get_system_info(DMI_PRODUCT_VERSION));
+ add_taint(TAINT_FIRMWARE_WORKAROUND, LOCKDEP_STILL_OK);
return -EINVAL;
}
pr_info("ANDD device: %x name: %s\n", andd->device_number,
@@ -471,14 +481,14 @@ static int dmar_parse_one_rhsa(struct acpi_dmar_header *header, void *arg)
return 0;
}
}
- WARN_TAINT(
- 1, TAINT_FIRMWARE_WORKAROUND,
+ pr_warn(FW_BUG
"Your BIOS is broken; RHSA refers to non-existent DMAR unit at %llx\n"
"BIOS vendor: %s; Ver: %s; Product Version: %s\n",
- drhd->reg_base_addr,
+ rhsa->base_address,
dmi_get_system_info(DMI_BIOS_VENDOR),
dmi_get_system_info(DMI_BIOS_VERSION),
dmi_get_system_info(DMI_PRODUCT_VERSION));
+ add_taint(TAINT_FIRMWARE_WORKAROUND, LOCKDEP_STILL_OK);
return 0;
}
@@ -827,14 +837,14 @@ int __init dmar_table_init(void)
static void warn_invalid_dmar(u64 addr, const char *message)
{
- WARN_TAINT_ONCE(
- 1, TAINT_FIRMWARE_WORKAROUND,
+ pr_warn_once(FW_BUG
"Your BIOS is broken; DMAR reported at address %llx%s!\n"
"BIOS vendor: %s; Ver: %s; Product Version: %s\n",
addr, message,
dmi_get_system_info(DMI_BIOS_VENDOR),
dmi_get_system_info(DMI_BIOS_VERSION),
dmi_get_system_info(DMI_PRODUCT_VERSION));
+ add_taint(TAINT_FIRMWARE_WORKAROUND, LOCKDEP_STILL_OK);
}
static int __ref
diff --git a/drivers/iommu/intel-iommu-debugfs.c b/drivers/iommu/intel-iommu-debugfs.c
index c1257bef553c..3eb1fe240fb0 100644
--- a/drivers/iommu/intel-iommu-debugfs.c
+++ b/drivers/iommu/intel-iommu-debugfs.c
@@ -33,38 +33,42 @@ struct iommu_regset {
#define IOMMU_REGSET_ENTRY(_reg_) \
{ DMAR_##_reg_##_REG, __stringify(_reg_) }
-static const struct iommu_regset iommu_regs[] = {
+
+static const struct iommu_regset iommu_regs_32[] = {
IOMMU_REGSET_ENTRY(VER),
- IOMMU_REGSET_ENTRY(CAP),
- IOMMU_REGSET_ENTRY(ECAP),
IOMMU_REGSET_ENTRY(GCMD),
IOMMU_REGSET_ENTRY(GSTS),
- IOMMU_REGSET_ENTRY(RTADDR),
- IOMMU_REGSET_ENTRY(CCMD),
IOMMU_REGSET_ENTRY(FSTS),
IOMMU_REGSET_ENTRY(FECTL),
IOMMU_REGSET_ENTRY(FEDATA),
IOMMU_REGSET_ENTRY(FEADDR),
IOMMU_REGSET_ENTRY(FEUADDR),
- IOMMU_REGSET_ENTRY(AFLOG),
IOMMU_REGSET_ENTRY(PMEN),
IOMMU_REGSET_ENTRY(PLMBASE),
IOMMU_REGSET_ENTRY(PLMLIMIT),
+ IOMMU_REGSET_ENTRY(ICS),
+ IOMMU_REGSET_ENTRY(PRS),
+ IOMMU_REGSET_ENTRY(PECTL),
+ IOMMU_REGSET_ENTRY(PEDATA),
+ IOMMU_REGSET_ENTRY(PEADDR),
+ IOMMU_REGSET_ENTRY(PEUADDR),
+};
+
+static const struct iommu_regset iommu_regs_64[] = {
+ IOMMU_REGSET_ENTRY(CAP),
+ IOMMU_REGSET_ENTRY(ECAP),
+ IOMMU_REGSET_ENTRY(RTADDR),
+ IOMMU_REGSET_ENTRY(CCMD),
+ IOMMU_REGSET_ENTRY(AFLOG),
IOMMU_REGSET_ENTRY(PHMBASE),
IOMMU_REGSET_ENTRY(PHMLIMIT),
IOMMU_REGSET_ENTRY(IQH),
IOMMU_REGSET_ENTRY(IQT),
IOMMU_REGSET_ENTRY(IQA),
- IOMMU_REGSET_ENTRY(ICS),
IOMMU_REGSET_ENTRY(IRTA),
IOMMU_REGSET_ENTRY(PQH),
IOMMU_REGSET_ENTRY(PQT),
IOMMU_REGSET_ENTRY(PQA),
- IOMMU_REGSET_ENTRY(PRS),
- IOMMU_REGSET_ENTRY(PECTL),
- IOMMU_REGSET_ENTRY(PEDATA),
- IOMMU_REGSET_ENTRY(PEADDR),
- IOMMU_REGSET_ENTRY(PEUADDR),
IOMMU_REGSET_ENTRY(MTRRCAP),
IOMMU_REGSET_ENTRY(MTRRDEF),
IOMMU_REGSET_ENTRY(MTRR_FIX64K_00000),
@@ -127,10 +131,16 @@ static int iommu_regset_show(struct seq_file *m, void *unused)
* by adding the offset to the pointer (virtual address).
*/
raw_spin_lock_irqsave(&iommu->register_lock, flag);
- for (i = 0 ; i < ARRAY_SIZE(iommu_regs); i++) {
- value = dmar_readq(iommu->reg + iommu_regs[i].offset);
+ for (i = 0 ; i < ARRAY_SIZE(iommu_regs_32); i++) {
+ value = dmar_readl(iommu->reg + iommu_regs_32[i].offset);
+ seq_printf(m, "%-16s\t0x%02x\t\t0x%016llx\n",
+ iommu_regs_32[i].regs, iommu_regs_32[i].offset,
+ value);
+ }
+ for (i = 0 ; i < ARRAY_SIZE(iommu_regs_64); i++) {
+ value = dmar_readq(iommu->reg + iommu_regs_64[i].offset);
seq_printf(m, "%-16s\t0x%02x\t\t0x%016llx\n",
- iommu_regs[i].regs, iommu_regs[i].offset,
+ iommu_regs_64[i].regs, iommu_regs_64[i].offset,
value);
}
raw_spin_unlock_irqrestore(&iommu->register_lock, flag);
@@ -272,9 +282,16 @@ static int dmar_translation_struct_show(struct seq_file *m, void *unused)
{
struct dmar_drhd_unit *drhd;
struct intel_iommu *iommu;
+ u32 sts;
rcu_read_lock();
for_each_active_iommu(iommu, drhd) {
+ sts = dmar_readl(iommu->reg + DMAR_GSTS_REG);
+ if (!(sts & DMA_GSTS_TES)) {
+ seq_printf(m, "DMA Remapping is not enabled on %s\n",
+ iommu->name);
+ continue;
+ }
root_tbl_walk(m, iommu);
seq_putc(m, '\n');
}
@@ -415,6 +432,7 @@ static int ir_translation_struct_show(struct seq_file *m, void *unused)
struct dmar_drhd_unit *drhd;
struct intel_iommu *iommu;
u64 irta;
+ u32 sts;
rcu_read_lock();
for_each_active_iommu(iommu, drhd) {
@@ -424,7 +442,8 @@ static int ir_translation_struct_show(struct seq_file *m, void *unused)
seq_printf(m, "Remapped Interrupt supported on IOMMU: %s\n",
iommu->name);
- if (iommu->ir_table) {
+ sts = dmar_readl(iommu->reg + DMAR_GSTS_REG);
+ if (iommu->ir_table && (sts & DMA_GSTS_IRES)) {
irta = virt_to_phys(iommu->ir_table->base);
seq_printf(m, " IR table address:%llx\n", irta);
ir_tbl_remap_entry_show(m, iommu);
diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c
index 6fa6de2b6ad5..ef0a5246700e 100644
--- a/drivers/iommu/intel-iommu.c
+++ b/drivers/iommu/intel-iommu.c
@@ -4261,10 +4261,11 @@ static void quirk_ioat_snb_local_iommu(struct pci_dev *pdev)
/* we know that the this iommu should be at offset 0xa000 from vtbar */
drhd = dmar_find_matched_drhd_unit(pdev);
- if (WARN_TAINT_ONCE(!drhd || drhd->reg_base_addr - vtbar != 0xa000,
- TAINT_FIRMWARE_WORKAROUND,
- "BIOS assigned incorrect VT-d unit for Intel(R) QuickData Technology device\n"))
+ if (!drhd || drhd->reg_base_addr - vtbar != 0xa000) {
+ pr_warn_once(FW_BUG "BIOS assigned incorrect VT-d unit for Intel(R) QuickData Technology device\n");
+ add_taint(TAINT_FIRMWARE_WORKAROUND, LOCKDEP_STILL_OK);
pdev->dev.archdata.iommu = DUMMY_DEVICE_DOMAIN_INFO;
+ }
}
DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_IOAT_SNB, quirk_ioat_snb_local_iommu);
@@ -4460,14 +4461,16 @@ int __init dmar_parse_one_rmrr(struct acpi_dmar_header *header, void *arg)
struct dmar_rmrr_unit *rmrru;
rmrr = (struct acpi_dmar_reserved_memory *)header;
- if (rmrr_sanity_check(rmrr))
- WARN_TAINT(1, TAINT_FIRMWARE_WORKAROUND,
+ if (rmrr_sanity_check(rmrr)) {
+ pr_warn(FW_BUG
"Your BIOS is broken; bad RMRR [%#018Lx-%#018Lx]\n"
"BIOS vendor: %s; Ver: %s; Product Version: %s\n",
rmrr->base_address, rmrr->end_address,
dmi_get_system_info(DMI_BIOS_VENDOR),
dmi_get_system_info(DMI_BIOS_VERSION),
dmi_get_system_info(DMI_PRODUCT_VERSION));
+ add_taint(TAINT_FIRMWARE_WORKAROUND, LOCKDEP_STILL_OK);
+ }
rmrru = kzalloc(sizeof(*rmrru), GFP_KERNEL);
if (!rmrru)
@@ -4498,7 +4501,8 @@ static struct dmar_atsr_unit *dmar_find_atsr(struct acpi_dmar_atsr *atsr)
struct dmar_atsr_unit *atsru;
struct acpi_dmar_atsr *tmp;
- list_for_each_entry_rcu(atsru, &dmar_atsr_units, list) {
+ list_for_each_entry_rcu(atsru, &dmar_atsr_units, list,
+ dmar_rcu_check()) {
tmp = (struct acpi_dmar_atsr *)atsru->hdr;
if (atsr->segment != tmp->segment)
continue;
@@ -5130,6 +5134,9 @@ int __init intel_iommu_init(void)
down_write(&dmar_global_lock);
+ if (!no_iommu)
+ intel_iommu_debugfs_init();
+
if (no_iommu || dmar_disabled) {
/*
* We exit the function here to ensure IOMMU's remapping and
@@ -5193,6 +5200,7 @@ int __init intel_iommu_init(void)
init_iommu_pm_ops();
+ down_read(&dmar_global_lock);
for_each_active_iommu(iommu, drhd) {
iommu_device_sysfs_add(&iommu->iommu, NULL,
intel_iommu_groups,
@@ -5200,6 +5208,7 @@ int __init intel_iommu_init(void)
iommu_device_set_ops(&iommu->iommu, &intel_iommu_ops);
iommu_device_register(&iommu->iommu);
}
+ up_read(&dmar_global_lock);
bus_set_iommu(&pci_bus_type, &intel_iommu_ops);
if (si_domain && !hw_pass_through)
@@ -5210,7 +5219,6 @@ int __init intel_iommu_init(void)
down_read(&dmar_global_lock);
if (probe_acpi_namespace_devices())
pr_warn("ACPI name space devices didn't probe correctly\n");
- up_read(&dmar_global_lock);
/* Finally, we enable the DMA remapping hardware. */
for_each_iommu(iommu, drhd) {
@@ -5219,10 +5227,11 @@ int __init intel_iommu_init(void)
iommu_disable_protect_mem_regions(iommu);
}
+ up_read(&dmar_global_lock);
+
pr_info("Intel(R) Virtualization Technology for Directed I/O\n");
intel_iommu_enabled = 1;
- intel_iommu_debugfs_init();
return 0;
@@ -5700,8 +5709,10 @@ static phys_addr_t intel_iommu_iova_to_phys(struct iommu_domain *domain,
u64 phys = 0;
pte = pfn_to_dma_pte(dmar_domain, iova >> VTD_PAGE_SHIFT, &level);
- if (pte)
- phys = dma_pte_addr(pte);
+ if (pte && dma_pte_present(pte))
+ phys = dma_pte_addr(pte) +
+ (iova & (BIT_MASK(level_to_offset_bits(level) +
+ VTD_PAGE_SHIFT) - 1));
return phys;
}
diff --git a/drivers/iommu/intel-svm.c b/drivers/iommu/intel-svm.c
index d7f2a5358900..2998418f0a38 100644
--- a/drivers/iommu/intel-svm.c
+++ b/drivers/iommu/intel-svm.c
@@ -531,7 +531,7 @@ struct page_req_dsc {
u64 priv_data[2];
};
-#define PRQ_RING_MASK ((0x1000 << PRQ_ORDER) - 0x10)
+#define PRQ_RING_MASK ((0x1000 << PRQ_ORDER) - 0x20)
static bool access_error(struct vm_area_struct *vma, struct page_req_dsc *req)
{
@@ -611,14 +611,15 @@ static irqreturn_t prq_event_thread(int irq, void *d)
* any faults on kernel addresses. */
if (!svm->mm)
goto bad_req;
- /* If the mm is already defunct, don't handle faults. */
- if (!mmget_not_zero(svm->mm))
- goto bad_req;
/* If address is not canonical, return invalid response */
if (!is_canonical_address(address))
goto bad_req;
+ /* If the mm is already defunct, don't handle faults. */
+ if (!mmget_not_zero(svm->mm))
+ goto bad_req;
+
down_read(&svm->mm->mmap_sem);
vma = find_extend_vma(svm->mm, address);
if (!vma || address < vma->vm_start)
diff --git a/drivers/iommu/io-pgtable-arm.c b/drivers/iommu/io-pgtable-arm.c
index 983b08477e64..04fbd4bf0ff9 100644
--- a/drivers/iommu/io-pgtable-arm.c
+++ b/drivers/iommu/io-pgtable-arm.c
@@ -468,7 +468,7 @@ static int arm_lpae_map(struct io_pgtable_ops *ops, unsigned long iova,
arm_lpae_iopte *ptep = data->pgd;
int ret, lvl = data->start_level;
arm_lpae_iopte prot;
- long iaext = (long)iova >> cfg->ias;
+ long iaext = (s64)iova >> cfg->ias;
/* If no access, then nothing to do */
if (!(iommu_prot & (IOMMU_READ | IOMMU_WRITE)))
@@ -645,7 +645,7 @@ static size_t arm_lpae_unmap(struct io_pgtable_ops *ops, unsigned long iova,
struct arm_lpae_io_pgtable *data = io_pgtable_ops_to_data(ops);
struct io_pgtable_cfg *cfg = &data->iop.cfg;
arm_lpae_iopte *ptep = data->pgd;
- long iaext = (long)iova >> cfg->ias;
+ long iaext = (s64)iova >> cfg->ias;
if (WARN_ON(!size || (size & cfg->pgsize_bitmap) != size))
return 0;
diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c
index 3e3528436e0b..2b471419e26c 100644
--- a/drivers/iommu/iommu.c
+++ b/drivers/iommu/iommu.c
@@ -152,9 +152,9 @@ void iommu_device_unregister(struct iommu_device *iommu)
}
EXPORT_SYMBOL_GPL(iommu_device_unregister);
-static struct iommu_param *iommu_get_dev_param(struct device *dev)
+static struct dev_iommu *dev_iommu_get(struct device *dev)
{
- struct iommu_param *param = dev->iommu_param;
+ struct dev_iommu *param = dev->iommu;
if (param)
return param;
@@ -164,14 +164,14 @@ static struct iommu_param *iommu_get_dev_param(struct device *dev)
return NULL;
mutex_init(&param->lock);
- dev->iommu_param = param;
+ dev->iommu = param;
return param;
}
-static void iommu_free_dev_param(struct device *dev)
+static void dev_iommu_free(struct device *dev)
{
- kfree(dev->iommu_param);
- dev->iommu_param = NULL;
+ kfree(dev->iommu);
+ dev->iommu = NULL;
}
int iommu_probe_device(struct device *dev)
@@ -183,7 +183,7 @@ int iommu_probe_device(struct device *dev)
if (!ops)
return -EINVAL;
- if (!iommu_get_dev_param(dev))
+ if (!dev_iommu_get(dev))
return -ENOMEM;
if (!try_module_get(ops->owner)) {
@@ -200,7 +200,7 @@ int iommu_probe_device(struct device *dev)
err_module_put:
module_put(ops->owner);
err_free_dev_param:
- iommu_free_dev_param(dev);
+ dev_iommu_free(dev);
return ret;
}
@@ -211,9 +211,9 @@ void iommu_release_device(struct device *dev)
if (dev->iommu_group)
ops->remove_device(dev);
- if (dev->iommu_param) {
+ if (dev->iommu) {
module_put(ops->owner);
- iommu_free_dev_param(dev);
+ dev_iommu_free(dev);
}
}
@@ -972,7 +972,7 @@ int iommu_register_device_fault_handler(struct device *dev,
iommu_dev_fault_handler_t handler,
void *data)
{
- struct iommu_param *param = dev->iommu_param;
+ struct dev_iommu *param = dev->iommu;
int ret = 0;
if (!param)
@@ -1015,7 +1015,7 @@ EXPORT_SYMBOL_GPL(iommu_register_device_fault_handler);
*/
int iommu_unregister_device_fault_handler(struct device *dev)
{
- struct iommu_param *param = dev->iommu_param;
+ struct dev_iommu *param = dev->iommu;
int ret = 0;
if (!param)
@@ -1055,7 +1055,7 @@ EXPORT_SYMBOL_GPL(iommu_unregister_device_fault_handler);
*/
int iommu_report_device_fault(struct device *dev, struct iommu_fault_event *evt)
{
- struct iommu_param *param = dev->iommu_param;
+ struct dev_iommu *param = dev->iommu;
struct iommu_fault_event *evt_pending = NULL;
struct iommu_fault_param *fparam;
int ret = 0;
@@ -1104,7 +1104,7 @@ int iommu_page_response(struct device *dev,
int ret = -EINVAL;
struct iommu_fault_event *evt;
struct iommu_fault_page_request *prm;
- struct iommu_param *param = dev->iommu_param;
+ struct dev_iommu *param = dev->iommu;
struct iommu_domain *domain = iommu_get_domain_for_dev(dev);
if (!domain || !domain->ops->page_response)
@@ -2405,7 +2405,11 @@ int iommu_fwspec_init(struct device *dev, struct fwnode_handle *iommu_fwnode,
if (fwspec)
return ops == fwspec->ops ? 0 : -EINVAL;
- fwspec = kzalloc(sizeof(*fwspec), GFP_KERNEL);
+ if (!dev_iommu_get(dev))
+ return -ENOMEM;
+
+ /* Preallocate for the overwhelmingly common case of 1 ID */
+ fwspec = kzalloc(struct_size(fwspec, ids, 1), GFP_KERNEL);
if (!fwspec)
return -ENOMEM;
@@ -2432,15 +2436,15 @@ 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_get(dev);
- size_t size;
- int i;
+ int i, new_num;
if (!fwspec)
return -EINVAL;
- size = offsetof(struct iommu_fwspec, ids[fwspec->num_ids + num_ids]);
- if (size > sizeof(*fwspec)) {
- fwspec = krealloc(fwspec, size, GFP_KERNEL);
+ new_num = fwspec->num_ids + num_ids;
+ if (new_num > 1) {
+ fwspec = krealloc(fwspec, struct_size(fwspec, ids, new_num),
+ GFP_KERNEL);
if (!fwspec)
return -ENOMEM;
@@ -2450,7 +2454,7 @@ int iommu_fwspec_add_ids(struct device *dev, u32 *ids, int num_ids)
for (i = 0; i < num_ids; i++)
fwspec->ids[fwspec->num_ids + i] = ids[i];
- fwspec->num_ids += num_ids;
+ fwspec->num_ids = new_num;
return 0;
}
EXPORT_SYMBOL_GPL(iommu_fwspec_add_ids);
diff --git a/drivers/iommu/ipmmu-vmsa.c b/drivers/iommu/ipmmu-vmsa.c
index ecb3f9464dd5..310cf09feea3 100644
--- a/drivers/iommu/ipmmu-vmsa.c
+++ b/drivers/iommu/ipmmu-vmsa.c
@@ -89,9 +89,7 @@ static struct ipmmu_vmsa_domain *to_vmsa_domain(struct iommu_domain *dom)
static struct ipmmu_vmsa_device *to_ipmmu(struct device *dev)
{
- struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev);
-
- return fwspec ? fwspec->iommu_priv : NULL;
+ return dev_iommu_priv_get(dev);
}
#define TLB_LOOP_TIMEOUT 100 /* 100us */
@@ -727,14 +725,13 @@ 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;
- fwspec->iommu_priv = platform_get_drvdata(ipmmu_pdev);
+ dev_iommu_priv_set(dev, platform_get_drvdata(ipmmu_pdev));
return 0;
}
diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c
index 95945f467c03..5f4d6df59cf6 100644
--- a/drivers/iommu/mtk_iommu.c
+++ b/drivers/iommu/mtk_iommu.c
@@ -358,8 +358,8 @@ static void mtk_iommu_domain_free(struct iommu_domain *domain)
static int mtk_iommu_attach_device(struct iommu_domain *domain,
struct device *dev)
{
+ struct mtk_iommu_data *data = dev_iommu_priv_get(dev);
struct mtk_iommu_domain *dom = to_mtk_domain(domain);
- struct mtk_iommu_data *data = dev_iommu_fwspec_get(dev)->iommu_priv;
if (!data)
return -ENODEV;
@@ -378,7 +378,7 @@ 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_get(dev)->iommu_priv;
+ struct mtk_iommu_data *data = dev_iommu_priv_get(dev);
if (!data)
return;
@@ -450,7 +450,7 @@ static int mtk_iommu_add_device(struct device *dev)
if (!fwspec || fwspec->ops != &mtk_iommu_ops)
return -ENODEV; /* Not a iommu client device */
- data = fwspec->iommu_priv;
+ data = dev_iommu_priv_get(dev);
iommu_device_link(&data->iommu, dev);
group = iommu_group_get_for_dev(dev);
@@ -469,7 +469,7 @@ static void mtk_iommu_remove_device(struct device *dev)
if (!fwspec || fwspec->ops != &mtk_iommu_ops)
return;
- data = fwspec->iommu_priv;
+ data = dev_iommu_priv_get(dev);
iommu_device_unlink(&data->iommu, dev);
iommu_group_remove_device(dev);
@@ -496,7 +496,6 @@ 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) {
@@ -505,13 +504,13 @@ static int mtk_iommu_of_xlate(struct device *dev, struct of_phandle_args *args)
return -EINVAL;
}
- if (!fwspec->iommu_priv) {
+ if (!dev_iommu_priv_get(dev)) {
/* Get the m4u device */
m4updev = of_find_device_by_node(args->np);
if (WARN_ON(!m4updev))
return -EINVAL;
- fwspec->iommu_priv = platform_get_drvdata(m4updev);
+ dev_iommu_priv_set(dev, platform_get_drvdata(m4updev));
}
return iommu_fwspec_add_ids(dev, args->args, 1);
diff --git a/drivers/iommu/mtk_iommu_v1.c b/drivers/iommu/mtk_iommu_v1.c
index e93b94ecac45..a31be05601c9 100644
--- a/drivers/iommu/mtk_iommu_v1.c
+++ b/drivers/iommu/mtk_iommu_v1.c
@@ -263,8 +263,8 @@ static void mtk_iommu_domain_free(struct iommu_domain *domain)
static int mtk_iommu_attach_device(struct iommu_domain *domain,
struct device *dev)
{
+ struct mtk_iommu_data *data = dev_iommu_priv_get(dev);
struct mtk_iommu_domain *dom = to_mtk_domain(domain);
- struct mtk_iommu_data *data = dev_iommu_fwspec_get(dev)->iommu_priv;
int ret;
if (!data)
@@ -286,7 +286,7 @@ 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_get(dev)->iommu_priv;
+ struct mtk_iommu_data *data = dev_iommu_priv_get(dev);
if (!data)
return;
@@ -387,20 +387,20 @@ static int mtk_iommu_create_mapping(struct device *dev,
return -EINVAL;
}
- if (!fwspec->iommu_priv) {
+ if (!dev_iommu_priv_get(dev)) {
/* Get the m4u device */
m4updev = of_find_device_by_node(args->np);
if (WARN_ON(!m4updev))
return -EINVAL;
- fwspec->iommu_priv = platform_get_drvdata(m4updev);
+ dev_iommu_priv_set(dev, platform_get_drvdata(m4updev));
}
ret = iommu_fwspec_add_ids(dev, args->args, 1);
if (ret)
return ret;
- data = fwspec->iommu_priv;
+ data = dev_iommu_priv_get(dev);
m4udev = data->dev;
mtk_mapping = m4udev->archdata.iommu;
if (!mtk_mapping) {
@@ -459,7 +459,7 @@ static int mtk_iommu_add_device(struct device *dev)
if (err)
return err;
- data = fwspec->iommu_priv;
+ data = dev_iommu_priv_get(dev);
mtk_mapping = data->dev->archdata.iommu;
err = arm_iommu_attach_device(dev, mtk_mapping);
if (err) {
@@ -478,7 +478,7 @@ static void mtk_iommu_remove_device(struct device *dev)
if (!fwspec || fwspec->ops != &mtk_iommu_ops)
return;
- data = fwspec->iommu_priv;
+ data = dev_iommu_priv_get(dev);
iommu_device_unlink(&data->iommu, dev);
iommu_group_remove_device(dev);
diff --git a/drivers/iommu/qcom_iommu.c b/drivers/iommu/qcom_iommu.c
index 4328da0b0a9f..0e2a96467767 100644
--- a/drivers/iommu/qcom_iommu.c
+++ b/drivers/iommu/qcom_iommu.c
@@ -48,7 +48,7 @@ struct qcom_iommu_dev {
void __iomem *local_base;
u32 sec_id;
u8 num_ctxs;
- struct qcom_iommu_ctx *ctxs[0]; /* indexed by asid-1 */
+ struct qcom_iommu_ctx *ctxs[]; /* indexed by asid-1 */
};
struct qcom_iommu_ctx {
@@ -74,16 +74,19 @@ static struct qcom_iommu_domain *to_qcom_iommu_domain(struct iommu_domain *dom)
static const struct iommu_ops qcom_iommu_ops;
-static struct qcom_iommu_dev * to_iommu(struct iommu_fwspec *fwspec)
+static struct qcom_iommu_dev * to_iommu(struct device *dev)
{
+ struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev);
+
if (!fwspec || fwspec->ops != &qcom_iommu_ops)
return NULL;
- return fwspec->iommu_priv;
+
+ return dev_iommu_priv_get(dev);
}
-static struct qcom_iommu_ctx * to_ctx(struct iommu_fwspec *fwspec, unsigned asid)
+static struct qcom_iommu_ctx * to_ctx(struct device *dev, unsigned asid)
{
- struct qcom_iommu_dev *qcom_iommu = to_iommu(fwspec);
+ struct qcom_iommu_dev *qcom_iommu = to_iommu(dev);
if (!qcom_iommu)
return NULL;
return qcom_iommu->ctxs[asid - 1];
@@ -115,11 +118,14 @@ iommu_readq(struct qcom_iommu_ctx *ctx, unsigned reg)
static void qcom_iommu_tlb_sync(void *cookie)
{
- struct iommu_fwspec *fwspec = cookie;
+ struct iommu_fwspec *fwspec;
+ struct device *dev = cookie;
unsigned i;
+ fwspec = dev_iommu_fwspec_get(dev);
+
for (i = 0; i < fwspec->num_ids; i++) {
- struct qcom_iommu_ctx *ctx = to_ctx(fwspec, fwspec->ids[i]);
+ struct qcom_iommu_ctx *ctx = to_ctx(dev, fwspec->ids[i]);
unsigned int val, ret;
iommu_writel(ctx, ARM_SMMU_CB_TLBSYNC, 0);
@@ -133,11 +139,14 @@ static void qcom_iommu_tlb_sync(void *cookie)
static void qcom_iommu_tlb_inv_context(void *cookie)
{
- struct iommu_fwspec *fwspec = cookie;
+ struct device *dev = cookie;
+ struct iommu_fwspec *fwspec;
unsigned i;
+ fwspec = dev_iommu_fwspec_get(dev);
+
for (i = 0; i < fwspec->num_ids; i++) {
- struct qcom_iommu_ctx *ctx = to_ctx(fwspec, fwspec->ids[i]);
+ struct qcom_iommu_ctx *ctx = to_ctx(dev, fwspec->ids[i]);
iommu_writel(ctx, ARM_SMMU_CB_S1_TLBIASID, ctx->asid);
}
@@ -147,13 +156,16 @@ static void qcom_iommu_tlb_inv_context(void *cookie)
static void qcom_iommu_tlb_inv_range_nosync(unsigned long iova, size_t size,
size_t granule, bool leaf, void *cookie)
{
- struct iommu_fwspec *fwspec = cookie;
+ struct device *dev = cookie;
+ struct iommu_fwspec *fwspec;
unsigned i, reg;
reg = leaf ? ARM_SMMU_CB_S1_TLBIVAL : ARM_SMMU_CB_S1_TLBIVA;
+ fwspec = dev_iommu_fwspec_get(dev);
+
for (i = 0; i < fwspec->num_ids; i++) {
- struct qcom_iommu_ctx *ctx = to_ctx(fwspec, fwspec->ids[i]);
+ struct qcom_iommu_ctx *ctx = to_ctx(dev, fwspec->ids[i]);
size_t s = size;
iova = (iova >> 12) << 12;
@@ -222,9 +234,10 @@ static irqreturn_t qcom_iommu_fault(int irq, void *dev)
static int qcom_iommu_init_domain(struct iommu_domain *domain,
struct qcom_iommu_dev *qcom_iommu,
- struct iommu_fwspec *fwspec)
+ struct device *dev)
{
struct qcom_iommu_domain *qcom_domain = to_qcom_iommu_domain(domain);
+ struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev);
struct io_pgtable_ops *pgtbl_ops;
struct io_pgtable_cfg pgtbl_cfg;
int i, ret = 0;
@@ -243,7 +256,7 @@ static int qcom_iommu_init_domain(struct iommu_domain *domain,
};
qcom_domain->iommu = qcom_iommu;
- pgtbl_ops = alloc_io_pgtable_ops(ARM_32_LPAE_S1, &pgtbl_cfg, fwspec);
+ pgtbl_ops = alloc_io_pgtable_ops(ARM_32_LPAE_S1, &pgtbl_cfg, dev);
if (!pgtbl_ops) {
dev_err(qcom_iommu->dev, "failed to allocate pagetable ops\n");
ret = -ENOMEM;
@@ -256,7 +269,7 @@ static int qcom_iommu_init_domain(struct iommu_domain *domain,
domain->geometry.force_aperture = true;
for (i = 0; i < fwspec->num_ids; i++) {
- struct qcom_iommu_ctx *ctx = to_ctx(fwspec, fwspec->ids[i]);
+ struct qcom_iommu_ctx *ctx = to_ctx(dev, fwspec->ids[i]);
if (!ctx->secure_init) {
ret = qcom_scm_restore_sec_cfg(qcom_iommu->sec_id, ctx->asid);
@@ -363,8 +376,7 @@ static void qcom_iommu_domain_free(struct iommu_domain *domain)
static int qcom_iommu_attach_dev(struct iommu_domain *domain, struct device *dev)
{
- struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev);
- struct qcom_iommu_dev *qcom_iommu = to_iommu(fwspec);
+ struct qcom_iommu_dev *qcom_iommu = to_iommu(dev);
struct qcom_iommu_domain *qcom_domain = to_qcom_iommu_domain(domain);
int ret;
@@ -375,7 +387,7 @@ 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, fwspec);
+ ret = qcom_iommu_init_domain(domain, qcom_iommu, dev);
pm_runtime_put_sync(qcom_iommu->dev);
if (ret < 0)
return ret;
@@ -397,9 +409,9 @@ 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_get(dev);
- struct qcom_iommu_dev *qcom_iommu = to_iommu(fwspec);
struct qcom_iommu_domain *qcom_domain = to_qcom_iommu_domain(domain);
+ struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev);
+ struct qcom_iommu_dev *qcom_iommu = to_iommu(dev);
unsigned i;
if (WARN_ON(!qcom_domain->iommu))
@@ -407,7 +419,7 @@ static void qcom_iommu_detach_dev(struct iommu_domain *domain, struct device *de
pm_runtime_get_sync(qcom_iommu->dev);
for (i = 0; i < fwspec->num_ids; i++) {
- struct qcom_iommu_ctx *ctx = to_ctx(fwspec, fwspec->ids[i]);
+ struct qcom_iommu_ctx *ctx = to_ctx(dev, fwspec->ids[i]);
/* Disable the context bank: */
iommu_writel(ctx, ARM_SMMU_CB_SCTLR, 0);
@@ -514,7 +526,7 @@ 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_get(dev));
+ struct qcom_iommu_dev *qcom_iommu = to_iommu(dev);
struct iommu_group *group;
struct device_link *link;
@@ -545,7 +557,7 @@ 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_get(dev));
+ struct qcom_iommu_dev *qcom_iommu = to_iommu(dev);
if (!qcom_iommu)
return;
@@ -557,7 +569,6 @@ 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];
@@ -583,14 +594,14 @@ static int qcom_iommu_of_xlate(struct device *dev, struct of_phandle_args *args)
WARN_ON(asid > qcom_iommu->num_ctxs))
return -EINVAL;
- if (!fwspec->iommu_priv) {
- fwspec->iommu_priv = qcom_iommu;
+ if (!dev_iommu_priv_get(dev)) {
+ dev_iommu_priv_set(dev, 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 != fwspec->iommu_priv))
+ if (WARN_ON(qcom_iommu != dev_iommu_priv_get(dev)))
return -EINVAL;
}
diff --git a/drivers/iommu/tegra-gart.c b/drivers/iommu/tegra-gart.c
index 3fb7ba72507d..db6559e8336f 100644
--- a/drivers/iommu/tegra-gart.c
+++ b/drivers/iommu/tegra-gart.c
@@ -247,7 +247,7 @@ static int gart_iommu_add_device(struct device *dev)
{
struct iommu_group *group;
- if (!dev->iommu_fwspec)
+ if (!dev_iommu_fwspec_get(dev))
return -ENODEV;
group = iommu_group_get_for_dev(dev);
diff --git a/drivers/iommu/virtio-iommu.c b/drivers/iommu/virtio-iommu.c
index cce329d71fba..d5cac4f46ca5 100644
--- a/drivers/iommu/virtio-iommu.c
+++ b/drivers/iommu/virtio-iommu.c
@@ -466,7 +466,7 @@ static int viommu_probe_endpoint(struct viommu_dev *viommu, struct device *dev)
struct virtio_iommu_req_probe *probe;
struct virtio_iommu_probe_property *prop;
struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev);
- struct viommu_endpoint *vdev = fwspec->iommu_priv;
+ struct viommu_endpoint *vdev = dev_iommu_priv_get(dev);
if (!fwspec->num_ids)
return -EINVAL;
@@ -607,24 +607,36 @@ static struct iommu_domain *viommu_domain_alloc(unsigned type)
return &vdomain->domain;
}
-static int viommu_domain_finalise(struct viommu_dev *viommu,
+static int viommu_domain_finalise(struct viommu_endpoint *vdev,
struct iommu_domain *domain)
{
int ret;
+ unsigned long viommu_page_size;
+ struct viommu_dev *viommu = vdev->viommu;
struct viommu_domain *vdomain = to_viommu_domain(domain);
- vdomain->viommu = viommu;
- vdomain->map_flags = viommu->map_flags;
+ viommu_page_size = 1UL << __ffs(viommu->pgsize_bitmap);
+ if (viommu_page_size > PAGE_SIZE) {
+ dev_err(vdev->dev,
+ "granule 0x%lx larger than system page size 0x%lx\n",
+ viommu_page_size, PAGE_SIZE);
+ return -EINVAL;
+ }
+
+ ret = ida_alloc_range(&viommu->domain_ids, viommu->first_domain,
+ viommu->last_domain, GFP_KERNEL);
+ if (ret < 0)
+ return ret;
+
+ vdomain->id = (unsigned int)ret;
domain->pgsize_bitmap = viommu->pgsize_bitmap;
domain->geometry = viommu->geometry;
- ret = ida_alloc_range(&viommu->domain_ids, viommu->first_domain,
- viommu->last_domain, GFP_KERNEL);
- if (ret >= 0)
- vdomain->id = (unsigned int)ret;
+ vdomain->map_flags = viommu->map_flags;
+ vdomain->viommu = viommu;
- return ret > 0 ? 0 : ret;
+ return 0;
}
static void viommu_domain_free(struct iommu_domain *domain)
@@ -648,7 +660,7 @@ static int viommu_attach_dev(struct iommu_domain *domain, struct device *dev)
int ret = 0;
struct virtio_iommu_req_attach req;
struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev);
- struct viommu_endpoint *vdev = fwspec->iommu_priv;
+ struct viommu_endpoint *vdev = dev_iommu_priv_get(dev);
struct viommu_domain *vdomain = to_viommu_domain(domain);
mutex_lock(&vdomain->mutex);
@@ -657,7 +669,7 @@ static int viommu_attach_dev(struct iommu_domain *domain, struct device *dev)
* Properly initialize the domain now that we know which viommu
* owns it.
*/
- ret = viommu_domain_finalise(vdev->viommu, domain);
+ ret = viommu_domain_finalise(vdev, domain);
} else if (vdomain->viommu != vdev->viommu) {
dev_err(dev, "cannot attach to foreign vIOMMU\n");
ret = -EXDEV;
@@ -807,8 +819,7 @@ static void viommu_iotlb_sync(struct iommu_domain *domain,
static void viommu_get_resv_regions(struct device *dev, struct list_head *head)
{
struct iommu_resv_region *entry, *new_entry, *msi = NULL;
- struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev);
- struct viommu_endpoint *vdev = fwspec->iommu_priv;
+ struct viommu_endpoint *vdev = dev_iommu_priv_get(dev);
int prot = IOMMU_WRITE | IOMMU_NOEXEC | IOMMU_MMIO;
list_for_each_entry(entry, &vdev->resv_regions, list) {
@@ -876,7 +887,7 @@ static int viommu_add_device(struct device *dev)
vdev->dev = dev;
vdev->viommu = viommu;
INIT_LIST_HEAD(&vdev->resv_regions);
- fwspec->iommu_priv = vdev;
+ dev_iommu_priv_set(dev, vdev);
if (viommu->probe_size) {
/* Get additional information for this endpoint */
@@ -920,7 +931,7 @@ static void viommu_remove_device(struct device *dev)
if (!fwspec || fwspec->ops != &viommu_ops)
return;
- vdev = fwspec->iommu_priv;
+ vdev = dev_iommu_priv_get(dev);
iommu_group_remove_device(dev);
iommu_device_unlink(&vdev->viommu->iommu, dev);
@@ -1082,7 +1093,6 @@ static int viommu_probe(struct virtio_device *vdev)
#ifdef CONFIG_PCI
if (pci_bus_type.iommu_ops != &viommu_ops) {
- pci_request_acs();
ret = bus_set_iommu(&pci_bus_type, &viommu_ops);
if (ret)
goto err_unregister;
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-26 05:15:26 +0100