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authorLinus Torvalds <torvalds@linux-foundation.org>2017-11-15 19:56:56 +0100
committerLinus Torvalds <torvalds@linux-foundation.org>2017-11-15 19:56:56 +0100
commitc9b012e5f4a1d01dfa8abc6318211a67ba7d5db2 (patch)
tree97b2f1c654fc4333e9e3111f76a26ec5503ee5b9 /drivers/acpi
parentMerge tag 'riscv-for-linus-4.15-arch-v9-premerge' of git://git.kernel.org/pub... (diff)
parentarm64: Make ARMV8_DEPRECATED depend on SYSCTL (diff)
downloadlinux-c9b012e5f4a1d01dfa8abc6318211a67ba7d5db2.tar.xz
linux-c9b012e5f4a1d01dfa8abc6318211a67ba7d5db2.zip
Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 updates from Will Deacon: "The big highlight is support for the Scalable Vector Extension (SVE) which required extensive ABI work to ensure we don't break existing applications by blowing away their signal stack with the rather large new vector context (<= 2 kbit per vector register). There's further work to be done optimising things like exception return, but the ABI is solid now. Much of the line count comes from some new PMU drivers we have, but they're pretty self-contained and I suspect we'll have more of them in future. Plenty of acronym soup here: - initial support for the Scalable Vector Extension (SVE) - improved handling for SError interrupts (required to handle RAS events) - enable GCC support for 128-bit integer types - remove kernel text addresses from backtraces and register dumps - use of WFE to implement long delay()s - ACPI IORT updates from Lorenzo Pieralisi - perf PMU driver for the Statistical Profiling Extension (SPE) - perf PMU driver for Hisilicon's system PMUs - misc cleanups and non-critical fixes" * tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (97 commits) arm64: Make ARMV8_DEPRECATED depend on SYSCTL arm64: Implement __lshrti3 library function arm64: support __int128 on gcc 5+ arm64/sve: Add documentation arm64/sve: Detect SVE and activate runtime support arm64/sve: KVM: Hide SVE from CPU features exposed to guests arm64/sve: KVM: Treat guest SVE use as undefined instruction execution arm64/sve: KVM: Prevent guests from using SVE arm64/sve: Add sysctl to set the default vector length for new processes arm64/sve: Add prctl controls for userspace vector length management arm64/sve: ptrace and ELF coredump support arm64/sve: Preserve SVE registers around EFI runtime service calls arm64/sve: Preserve SVE registers around kernel-mode NEON use arm64/sve: Probe SVE capabilities and usable vector lengths arm64: cpufeature: Move sys_caps_initialised declarations arm64/sve: Backend logic for setting the vector length arm64/sve: Signal handling support arm64/sve: Support vector length resetting for new processes arm64/sve: Core task context handling arm64/sve: Low-level CPU setup ...
Diffstat (limited to 'drivers/acpi')
-rw-r--r--drivers/acpi/arm64/gtdt.c2
-rw-r--r--drivers/acpi/arm64/iort.c258
2 files changed, 201 insertions, 59 deletions
diff --git a/drivers/acpi/arm64/gtdt.c b/drivers/acpi/arm64/gtdt.c
index 597a737d538f..92f9edf9d11e 100644
--- a/drivers/acpi/arm64/gtdt.c
+++ b/drivers/acpi/arm64/gtdt.c
@@ -199,7 +199,7 @@ static int __init gtdt_parse_timer_block(struct acpi_gtdt_timer_block *block,
struct acpi_gtdt_timer_entry *gtdt_frame;
if (!block->timer_count) {
- pr_err(FW_BUG "GT block present, but frame count is zero.");
+ pr_err(FW_BUG "GT block present, but frame count is zero.\n");
return -ENODEV;
}
diff --git a/drivers/acpi/arm64/iort.c b/drivers/acpi/arm64/iort.c
index de56394dd161..95255ecfae7c 100644
--- a/drivers/acpi/arm64/iort.c
+++ b/drivers/acpi/arm64/iort.c
@@ -88,8 +88,8 @@ static inline int iort_set_fwnode(struct acpi_iort_node *iort_node,
*
* Returns: fwnode_handle pointer on success, NULL on failure
*/
-static inline
-struct fwnode_handle *iort_get_fwnode(struct acpi_iort_node *node)
+static inline struct fwnode_handle *iort_get_fwnode(
+ struct acpi_iort_node *node)
{
struct iort_fwnode *curr;
struct fwnode_handle *fwnode = NULL;
@@ -126,6 +126,31 @@ static inline void iort_delete_fwnode(struct acpi_iort_node *node)
spin_unlock(&iort_fwnode_lock);
}
+/**
+ * iort_get_iort_node() - Retrieve iort_node associated with an fwnode
+ *
+ * @fwnode: fwnode associated with device to be looked-up
+ *
+ * Returns: iort_node pointer on success, NULL on failure
+ */
+static inline struct acpi_iort_node *iort_get_iort_node(
+ struct fwnode_handle *fwnode)
+{
+ struct iort_fwnode *curr;
+ struct acpi_iort_node *iort_node = NULL;
+
+ spin_lock(&iort_fwnode_lock);
+ list_for_each_entry(curr, &iort_fwnode_list, list) {
+ if (curr->fwnode == fwnode) {
+ iort_node = curr->iort_node;
+ break;
+ }
+ }
+ spin_unlock(&iort_fwnode_lock);
+
+ return iort_node;
+}
+
typedef acpi_status (*iort_find_node_callback)
(struct acpi_iort_node *node, void *context);
@@ -306,9 +331,8 @@ static int iort_id_map(struct acpi_iort_id_mapping *map, u8 type, u32 rid_in,
return 0;
}
-static
-struct acpi_iort_node *iort_node_get_id(struct acpi_iort_node *node,
- u32 *id_out, int index)
+static struct acpi_iort_node *iort_node_get_id(struct acpi_iort_node *node,
+ u32 *id_out, int index)
{
struct acpi_iort_node *parent;
struct acpi_iort_id_mapping *map;
@@ -332,7 +356,8 @@ struct acpi_iort_node *iort_node_get_id(struct acpi_iort_node *node,
if (map->flags & ACPI_IORT_ID_SINGLE_MAPPING) {
if (node->type == ACPI_IORT_NODE_NAMED_COMPONENT ||
- node->type == ACPI_IORT_NODE_PCI_ROOT_COMPLEX) {
+ node->type == ACPI_IORT_NODE_PCI_ROOT_COMPLEX ||
+ node->type == ACPI_IORT_NODE_SMMU_V3) {
*id_out = map->output_base;
return parent;
}
@@ -341,6 +366,47 @@ struct acpi_iort_node *iort_node_get_id(struct acpi_iort_node *node,
return NULL;
}
+#if (ACPI_CA_VERSION > 0x20170929)
+static int iort_get_id_mapping_index(struct acpi_iort_node *node)
+{
+ struct acpi_iort_smmu_v3 *smmu;
+
+ switch (node->type) {
+ case ACPI_IORT_NODE_SMMU_V3:
+ /*
+ * SMMUv3 dev ID mapping index was introduced in revision 1
+ * table, not available in revision 0
+ */
+ if (node->revision < 1)
+ return -EINVAL;
+
+ smmu = (struct acpi_iort_smmu_v3 *)node->node_data;
+ /*
+ * ID mapping index is only ignored if all interrupts are
+ * GSIV based
+ */
+ if (smmu->event_gsiv && smmu->pri_gsiv && smmu->gerr_gsiv
+ && smmu->sync_gsiv)
+ return -EINVAL;
+
+ if (smmu->id_mapping_index >= node->mapping_count) {
+ pr_err(FW_BUG "[node %p type %d] ID mapping index overflows valid mappings\n",
+ node, node->type);
+ return -EINVAL;
+ }
+
+ return smmu->id_mapping_index;
+ default:
+ return -EINVAL;
+ }
+}
+#else
+static inline int iort_get_id_mapping_index(struct acpi_iort_node *node)
+{
+ return -EINVAL;
+}
+#endif
+
static struct acpi_iort_node *iort_node_map_id(struct acpi_iort_node *node,
u32 id_in, u32 *id_out,
u8 type_mask)
@@ -350,7 +416,7 @@ static struct acpi_iort_node *iort_node_map_id(struct acpi_iort_node *node,
/* Parse the ID mapping tree to find specified node type */
while (node) {
struct acpi_iort_id_mapping *map;
- int i;
+ int i, index;
if (IORT_TYPE_MASK(node->type) & type_mask) {
if (id_out)
@@ -371,8 +437,19 @@ static struct acpi_iort_node *iort_node_map_id(struct acpi_iort_node *node,
goto fail_map;
}
+ /*
+ * Get the special ID mapping index (if any) and skip its
+ * associated ID map to prevent erroneous multi-stage
+ * IORT ID translations.
+ */
+ index = iort_get_id_mapping_index(node);
+
/* Do the ID translation */
for (i = 0; i < node->mapping_count; i++, map++) {
+ /* if it is special mapping index, skip it */
+ if (i == index)
+ continue;
+
if (!iort_id_map(map, node->type, id, &id))
break;
}
@@ -392,10 +469,9 @@ fail_map:
return NULL;
}
-static
-struct acpi_iort_node *iort_node_map_platform_id(struct acpi_iort_node *node,
- u32 *id_out, u8 type_mask,
- int index)
+static struct acpi_iort_node *iort_node_map_platform_id(
+ struct acpi_iort_node *node, u32 *id_out, u8 type_mask,
+ int index)
{
struct acpi_iort_node *parent;
u32 id;
@@ -424,9 +500,25 @@ static struct acpi_iort_node *iort_find_dev_node(struct device *dev)
{
struct pci_bus *pbus;
- if (!dev_is_pci(dev))
+ if (!dev_is_pci(dev)) {
+ struct acpi_iort_node *node;
+ /*
+ * scan iort_fwnode_list to see if it's an iort platform
+ * device (such as SMMU, PMCG),its iort node already cached
+ * and associated with fwnode when iort platform devices
+ * were initialized.
+ */
+ node = iort_get_iort_node(dev->fwnode);
+ if (node)
+ return node;
+
+ /*
+ * if not, then it should be a platform device defined in
+ * DSDT/SSDT (with Named Component node in IORT)
+ */
return iort_scan_node(ACPI_IORT_NODE_NAMED_COMPONENT,
iort_match_node_callback, dev);
+ }
/* Find a PCI root bus */
pbus = to_pci_dev(dev)->bus;
@@ -466,16 +558,24 @@ u32 iort_msi_map_rid(struct device *dev, u32 req_id)
*/
int iort_pmsi_get_dev_id(struct device *dev, u32 *dev_id)
{
- int i;
+ int i, index;
struct acpi_iort_node *node;
node = iort_find_dev_node(dev);
if (!node)
return -ENODEV;
- for (i = 0; i < node->mapping_count; i++) {
- if (iort_node_map_platform_id(node, dev_id, IORT_MSI_TYPE, i))
+ index = iort_get_id_mapping_index(node);
+ /* if there is a valid index, go get the dev_id directly */
+ if (index >= 0) {
+ if (iort_node_get_id(node, dev_id, index))
return 0;
+ } else {
+ for (i = 0; i < node->mapping_count; i++) {
+ if (iort_node_map_platform_id(node, dev_id,
+ IORT_MSI_TYPE, i))
+ return 0;
+ }
}
return -ENODEV;
@@ -538,6 +638,49 @@ struct irq_domain *iort_get_device_domain(struct device *dev, u32 req_id)
return irq_find_matching_fwnode(handle, DOMAIN_BUS_PCI_MSI);
}
+static void iort_set_device_domain(struct device *dev,
+ struct acpi_iort_node *node)
+{
+ struct acpi_iort_its_group *its;
+ struct acpi_iort_node *msi_parent;
+ struct acpi_iort_id_mapping *map;
+ struct fwnode_handle *iort_fwnode;
+ struct irq_domain *domain;
+ int index;
+
+ index = iort_get_id_mapping_index(node);
+ if (index < 0)
+ return;
+
+ map = ACPI_ADD_PTR(struct acpi_iort_id_mapping, node,
+ node->mapping_offset + index * sizeof(*map));
+
+ /* Firmware bug! */
+ if (!map->output_reference ||
+ !(map->flags & ACPI_IORT_ID_SINGLE_MAPPING)) {
+ pr_err(FW_BUG "[node %p type %d] Invalid MSI mapping\n",
+ node, node->type);
+ return;
+ }
+
+ msi_parent = ACPI_ADD_PTR(struct acpi_iort_node, iort_table,
+ map->output_reference);
+
+ if (!msi_parent || msi_parent->type != ACPI_IORT_NODE_ITS_GROUP)
+ return;
+
+ /* Move to ITS specific data */
+ its = (struct acpi_iort_its_group *)msi_parent->node_data;
+
+ iort_fwnode = iort_find_domain_token(its->identifiers[0]);
+ if (!iort_fwnode)
+ return;
+
+ domain = irq_find_matching_fwnode(iort_fwnode, DOMAIN_BUS_PLATFORM_MSI);
+ if (domain)
+ dev_set_msi_domain(dev, domain);
+}
+
/**
* iort_get_platform_device_domain() - Find MSI domain related to a
* platform device
@@ -623,14 +766,14 @@ static inline bool iort_iommu_driver_enabled(u8 type)
}
#ifdef CONFIG_IOMMU_API
-static inline
-const struct iommu_ops *iort_fwspec_iommu_ops(struct iommu_fwspec *fwspec)
+static inline const struct iommu_ops *iort_fwspec_iommu_ops(
+ struct iommu_fwspec *fwspec)
{
return (fwspec && fwspec->ops) ? fwspec->ops : NULL;
}
-static inline
-int iort_add_device_replay(const struct iommu_ops *ops, struct device *dev)
+static inline int iort_add_device_replay(const struct iommu_ops *ops,
+ struct device *dev)
{
int err = 0;
@@ -640,11 +783,11 @@ int iort_add_device_replay(const struct iommu_ops *ops, struct device *dev)
return err;
}
#else
-static inline
-const struct iommu_ops *iort_fwspec_iommu_ops(struct iommu_fwspec *fwspec)
+static inline const struct iommu_ops *iort_fwspec_iommu_ops(
+ struct iommu_fwspec *fwspec)
{ return NULL; }
-static inline
-int iort_add_device_replay(const struct iommu_ops *ops, struct device *dev)
+static inline int iort_add_device_replay(const struct iommu_ops *ops,
+ struct device *dev)
{ return 0; }
#endif
@@ -968,7 +1111,7 @@ static bool __init arm_smmu_v3_is_coherent(struct acpi_iort_node *node)
return smmu->flags & ACPI_IORT_SMMU_V3_COHACC_OVERRIDE;
}
-#if defined(CONFIG_ACPI_NUMA) && defined(ACPI_IORT_SMMU_V3_PXM_VALID)
+#if defined(CONFIG_ACPI_NUMA)
/*
* set numa proximity domain for smmuv3 device
*/
@@ -1051,34 +1194,34 @@ static bool __init arm_smmu_is_coherent(struct acpi_iort_node *node)
return smmu->flags & ACPI_IORT_SMMU_COHERENT_WALK;
}
-struct iort_iommu_config {
+struct iort_dev_config {
const char *name;
- int (*iommu_init)(struct acpi_iort_node *node);
- bool (*iommu_is_coherent)(struct acpi_iort_node *node);
- int (*iommu_count_resources)(struct acpi_iort_node *node);
- void (*iommu_init_resources)(struct resource *res,
+ int (*dev_init)(struct acpi_iort_node *node);
+ bool (*dev_is_coherent)(struct acpi_iort_node *node);
+ int (*dev_count_resources)(struct acpi_iort_node *node);
+ void (*dev_init_resources)(struct resource *res,
struct acpi_iort_node *node);
- void (*iommu_set_proximity)(struct device *dev,
+ void (*dev_set_proximity)(struct device *dev,
struct acpi_iort_node *node);
};
-static const struct iort_iommu_config iort_arm_smmu_v3_cfg __initconst = {
+static const struct iort_dev_config iort_arm_smmu_v3_cfg __initconst = {
.name = "arm-smmu-v3",
- .iommu_is_coherent = arm_smmu_v3_is_coherent,
- .iommu_count_resources = arm_smmu_v3_count_resources,
- .iommu_init_resources = arm_smmu_v3_init_resources,
- .iommu_set_proximity = arm_smmu_v3_set_proximity,
+ .dev_is_coherent = arm_smmu_v3_is_coherent,
+ .dev_count_resources = arm_smmu_v3_count_resources,
+ .dev_init_resources = arm_smmu_v3_init_resources,
+ .dev_set_proximity = arm_smmu_v3_set_proximity,
};
-static const struct iort_iommu_config iort_arm_smmu_cfg __initconst = {
+static const struct iort_dev_config iort_arm_smmu_cfg __initconst = {
.name = "arm-smmu",
- .iommu_is_coherent = arm_smmu_is_coherent,
- .iommu_count_resources = arm_smmu_count_resources,
- .iommu_init_resources = arm_smmu_init_resources
+ .dev_is_coherent = arm_smmu_is_coherent,
+ .dev_count_resources = arm_smmu_count_resources,
+ .dev_init_resources = arm_smmu_init_resources
};
-static __init
-const struct iort_iommu_config *iort_get_iommu_cfg(struct acpi_iort_node *node)
+static __init const struct iort_dev_config *iort_get_dev_cfg(
+ struct acpi_iort_node *node)
{
switch (node->type) {
case ACPI_IORT_NODE_SMMU_V3:
@@ -1091,31 +1234,28 @@ const struct iort_iommu_config *iort_get_iommu_cfg(struct acpi_iort_node *node)
}
/**
- * iort_add_smmu_platform_device() - Allocate a platform device for SMMU
- * @node: Pointer to SMMU ACPI IORT node
+ * iort_add_platform_device() - Allocate a platform device for IORT node
+ * @node: Pointer to device ACPI IORT node
*
* Returns: 0 on success, <0 failure
*/
-static int __init iort_add_smmu_platform_device(struct acpi_iort_node *node)
+static int __init iort_add_platform_device(struct acpi_iort_node *node,
+ const struct iort_dev_config *ops)
{
struct fwnode_handle *fwnode;
struct platform_device *pdev;
struct resource *r;
enum dev_dma_attr attr;
int ret, count;
- const struct iort_iommu_config *ops = iort_get_iommu_cfg(node);
-
- if (!ops)
- return -ENODEV;
pdev = platform_device_alloc(ops->name, PLATFORM_DEVID_AUTO);
if (!pdev)
return -ENOMEM;
- if (ops->iommu_set_proximity)
- ops->iommu_set_proximity(&pdev->dev, node);
+ if (ops->dev_set_proximity)
+ ops->dev_set_proximity(&pdev->dev, node);
- count = ops->iommu_count_resources(node);
+ count = ops->dev_count_resources(node);
r = kcalloc(count, sizeof(*r), GFP_KERNEL);
if (!r) {
@@ -1123,7 +1263,7 @@ static int __init iort_add_smmu_platform_device(struct acpi_iort_node *node)
goto dev_put;
}
- ops->iommu_init_resources(r, node);
+ ops->dev_init_resources(r, node);
ret = platform_device_add_resources(pdev, r, count);
/*
@@ -1158,12 +1298,14 @@ static int __init iort_add_smmu_platform_device(struct acpi_iort_node *node)
pdev->dev.fwnode = fwnode;
- attr = ops->iommu_is_coherent(node) ?
- DEV_DMA_COHERENT : DEV_DMA_NON_COHERENT;
+ attr = ops->dev_is_coherent && ops->dev_is_coherent(node) ?
+ DEV_DMA_COHERENT : DEV_DMA_NON_COHERENT;
/* Configure DMA for the page table walker */
acpi_dma_configure(&pdev->dev, attr);
+ iort_set_device_domain(&pdev->dev, node);
+
ret = platform_device_add(pdev);
if (ret)
goto dma_deconfigure;
@@ -1216,6 +1358,7 @@ static void __init iort_init_platform_devices(void)
struct fwnode_handle *fwnode;
int i, ret;
bool acs_enabled = false;
+ const struct iort_dev_config *ops;
/*
* iort_table and iort both point to the start of IORT table, but
@@ -1238,16 +1381,15 @@ static void __init iort_init_platform_devices(void)
if (!acs_enabled)
acs_enabled = iort_enable_acs(iort_node);
- if ((iort_node->type == ACPI_IORT_NODE_SMMU) ||
- (iort_node->type == ACPI_IORT_NODE_SMMU_V3)) {
-
+ ops = iort_get_dev_cfg(iort_node);
+ if (ops) {
fwnode = acpi_alloc_fwnode_static();
if (!fwnode)
return;
iort_set_fwnode(iort_node, fwnode);
- ret = iort_add_smmu_platform_device(iort_node);
+ ret = iort_add_platform_device(iort_node, ops);
if (ret) {
iort_delete_fwnode(iort_node);
acpi_free_fwnode_static(fwnode);