Add code that enables SRIOV on dh895xcc devices.
Signed-off-by: Tadeusz Struk <tadeusz.struk@xxxxxxxxx>
---
drivers/crypto/qat/qat_common/Makefile | 1
drivers/crypto/qat/qat_common/adf_accel_devices.h | 37 ++
drivers/crypto/qat/qat_common/adf_aer.c | 3
drivers/crypto/qat/qat_common/adf_cfg.c | 3
drivers/crypto/qat/qat_common/adf_cfg_common.h | 3
drivers/crypto/qat/qat_common/adf_common_drv.h | 37 ++
drivers/crypto/qat/qat_common/adf_ctl_drv.c | 6
drivers/crypto/qat/qat_common/adf_dev_mgr.c | 283 +++++++++++++-
drivers/crypto/qat/qat_common/adf_init.c | 10
drivers/crypto/qat/qat_common/adf_pf2vf_msg.c | 336 +++++++++++++++++
drivers/crypto/qat/qat_common/adf_pf2vf_msg.h | 144 +++++++
drivers/crypto/qat/qat_common/adf_sriov.c | 406 ++++++++++++++++++++
drivers/crypto/qat/qat_common/qat_crypto.c | 4
.../crypto/qat/qat_dh895xcc/adf_dh895xcc_hw_data.c | 24 +
.../crypto/qat/qat_dh895xcc/adf_dh895xcc_hw_data.h | 4
drivers/crypto/qat/qat_dh895xcc/adf_drv.c | 80 ++--
drivers/crypto/qat/qat_dh895xcc/adf_isr.c | 139 +++++--
17 files changed, 1426 insertions(+), 94 deletions(-)
create mode 100644 drivers/crypto/qat/qat_common/adf_pf2vf_msg.c
create mode 100644 drivers/crypto/qat/qat_common/adf_pf2vf_msg.h
create mode 100644 drivers/crypto/qat/qat_common/adf_sriov.c
diff --git a/drivers/crypto/qat/qat_common/Makefile b/drivers/crypto/qat/qat_common/Makefile
index e5fe4e7..df20a9d 100644
--- a/drivers/crypto/qat/qat_common/Makefile
+++ b/drivers/crypto/qat/qat_common/Makefile
@@ -19,3 +19,4 @@ intel_qat-objs := adf_cfg.o \
qat_hal.o
intel_qat-$(CONFIG_DEBUG_FS) += adf_transport_debug.o
+intel_qat-$(CONFIG_PCI_IOV) += adf_sriov.o adf_pf2vf_msg.o
diff --git a/drivers/crypto/qat/qat_common/adf_accel_devices.h b/drivers/crypto/qat/qat_common/adf_accel_devices.h
index a7d3d11..ca853d5 100644
--- a/drivers/crypto/qat/qat_common/adf_accel_devices.h
+++ b/drivers/crypto/qat/qat_common/adf_accel_devices.h
@@ -46,13 +46,17 @@
*/
#ifndef ADF_ACCEL_DEVICES_H_
#define ADF_ACCEL_DEVICES_H_
+#include <linux/interrupt.h>
#include <linux/module.h>
#include <linux/list.h>
#include <linux/io.h>
+#include <linux/ratelimit.h>
#include "adf_cfg_common.h"
#define ADF_DH895XCC_DEVICE_NAME "dh895xcc"
+#define ADF_DH895XCCVF_DEVICE_NAME "dh895xccvf"
#define ADF_DH895XCC_PCI_DEVICE_ID 0x435
+#define ADF_DH895XCCIOV_PCI_DEVICE_ID 0x443
#define ADF_PCI_MAX_BARS 3
#define ADF_DEVICE_NAME_LENGTH 32
#define ADF_ETR_MAX_RINGS_PER_BANK 16
@@ -79,6 +83,7 @@ struct adf_bar {
struct adf_accel_msix {
struct msix_entry *entries;
char **names;
+ u32 num_entries;
} __packed;
struct adf_accel_pci {
@@ -99,6 +104,7 @@ enum dev_sku_info {
DEV_SKU_2,
DEV_SKU_3,
DEV_SKU_4,
+ DEV_SKU_VF,
DEV_SKU_UNKNOWN,
};
@@ -113,6 +119,8 @@ static inline const char *get_sku_info(enum dev_sku_info info)
return "SKU3";
case DEV_SKU_4:
return "SKU4";
+ case DEV_SKU_VF:
+ return "SKUVF";
case DEV_SKU_UNKNOWN:
default:
break;
@@ -140,6 +148,8 @@ struct adf_hw_device_data {
uint32_t (*get_etr_bar_id)(struct adf_hw_device_data *self);
uint32_t (*get_num_aes)(struct adf_hw_device_data *self);
uint32_t (*get_num_accels)(struct adf_hw_device_data *self);
+ uint32_t (*get_pf2vf_offset)(uint32_t i);
+ uint32_t (*get_vintmsk_offset)(uint32_t i);
enum dev_sku_info (*get_sku)(struct adf_hw_device_data *self);
int (*alloc_irq)(struct adf_accel_dev *accel_dev);
void (*free_irq)(struct adf_accel_dev *accel_dev);
@@ -151,7 +161,9 @@ struct adf_hw_device_data {
void (*exit_arb)(struct adf_accel_dev *accel_dev);
void (*get_arb_mapping)(struct adf_accel_dev *accel_dev,
const uint32_t **cfg);
+ void (*disable_iov)(struct adf_accel_dev *accel_dev);
void (*enable_ints)(struct adf_accel_dev *accel_dev);
+ int (*enable_vf2pf_comms)(struct adf_accel_dev *accel_dev);
const char *fw_name;
const char *fw_mmp_name;
uint32_t fuses;
@@ -165,6 +177,7 @@ struct adf_hw_device_data {
uint8_t num_accel;
uint8_t num_logical_accel;
uint8_t num_engines;
+ uint8_t min_iov_compat_ver;
} __packed;
/* CSR write macro */
@@ -189,6 +202,15 @@ struct adf_fw_loader_data {
const struct firmware *mmp_fw;
};
+struct adf_accel_vf_info {
+ struct adf_accel_dev *accel_dev;
+ struct tasklet_struct vf2pf_bh_tasklet;
+ struct mutex pf2vf_lock; /* protect CSR access for PF2VF messages */
+ struct ratelimit_state vf2pf_ratelimit;
+ u32 vf_nr;
+ bool init;
+};
+
struct adf_accel_dev {
struct adf_etr_data *transport;
struct adf_hw_device_data *hw_device;
@@ -202,6 +224,21 @@ struct adf_accel_dev {
struct list_head list;
struct module *owner;
struct adf_accel_pci accel_pci_dev;
+ union {
+ struct {
+ /* vf_info is non-zero when SR-IOV is init'ed */
+ struct adf_accel_vf_info *vf_info;
+ } pf;
+ struct {
+ char *irq_name;
+ struct tasklet_struct pf2vf_bh_tasklet;
+ struct mutex vf2pf_lock; /* protect CSR access */
+ struct completion iov_msg_completion;
+ uint8_t compatible;
+ uint8_t pf_version;
+ } vf;
+ };
+ bool is_vf;
uint8_t accel_id;
} __packed;
#endif
diff --git a/drivers/crypto/qat/qat_common/adf_aer.c b/drivers/crypto/qat/qat_common/adf_aer.c
index 8f34a5f..a57b419 100644
--- a/drivers/crypto/qat/qat_common/adf_aer.c
+++ b/drivers/crypto/qat/qat_common/adf_aer.c
@@ -91,6 +91,9 @@ static void adf_dev_restore(struct adf_accel_dev *accel_dev)
dev_info(&GET_DEV(accel_dev), "Resetting device qat_dev%d\n",
accel_dev->accel_id);
+ if (!parent)
+ parent = pdev;
+
if (!pci_wait_for_pending_transaction(pdev))
dev_info(&GET_DEV(accel_dev),
"Transaction still in progress. Proceeding\n");
diff --git a/drivers/crypto/qat/qat_common/adf_cfg.c b/drivers/crypto/qat/qat_common/adf_cfg.c
index 76eccb8..d087979 100644
--- a/drivers/crypto/qat/qat_common/adf_cfg.c
+++ b/drivers/crypto/qat/qat_common/adf_cfg.c
@@ -178,6 +178,9 @@ void adf_cfg_dev_remove(struct adf_accel_dev *accel_dev)
{
struct adf_cfg_device_data *dev_cfg_data = accel_dev->cfg;
+ if (!dev_cfg_data)
+ return;
+
down_write(&dev_cfg_data->lock);
adf_cfg_section_del_all(&dev_cfg_data->sec_list);
up_write(&dev_cfg_data->lock);
diff --git a/drivers/crypto/qat/qat_common/adf_cfg_common.h b/drivers/crypto/qat/qat_common/adf_cfg_common.h
index 88b8218..c697fb1 100644
--- a/drivers/crypto/qat/qat_common/adf_cfg_common.h
+++ b/drivers/crypto/qat/qat_common/adf_cfg_common.h
@@ -60,7 +60,7 @@
#define ADF_CFG_NO_DEVICE 0xFF
#define ADF_CFG_AFFINITY_WHATEVER 0xFF
#define MAX_DEVICE_NAME_SIZE 32
-#define ADF_MAX_DEVICES 32
+#define ADF_MAX_DEVICES (32 * 32)
enum adf_cfg_val_type {
ADF_DEC,
@@ -71,6 +71,7 @@ enum adf_cfg_val_type {
enum adf_device_type {
DEV_UNKNOWN = 0,
DEV_DH895XCC,
+ DEV_DH895XCCVF,
};
struct adf_dev_status_info {
diff --git a/drivers/crypto/qat/qat_common/adf_common_drv.h b/drivers/crypto/qat/qat_common/adf_common_drv.h
index 7935a38..0f5f5e8 100644
--- a/drivers/crypto/qat/qat_common/adf_common_drv.h
+++ b/drivers/crypto/qat/qat_common/adf_common_drv.h
@@ -54,8 +54,8 @@
#include "icp_qat_hal.h"
#define ADF_MAJOR_VERSION 0
-#define ADF_MINOR_VERSION 1
-#define ADF_BUILD_VERSION 4
+#define ADF_MINOR_VERSION 2
+#define ADF_BUILD_VERSION 0
#define ADF_DRV_VERSION __stringify(ADF_MAJOR_VERSION) "." \
__stringify(ADF_MINOR_VERSION) "." \
__stringify(ADF_BUILD_VERSION)
@@ -95,7 +95,7 @@ struct service_hndl {
static inline int get_current_node(void)
{
- return cpu_data(current_thread_info()->cpu).phys_proc_id;
+ return topology_physical_package_id(smp_processor_id());
}
int adf_service_register(struct service_hndl *service);
@@ -106,13 +106,23 @@ int adf_dev_start(struct adf_accel_dev *accel_dev);
int adf_dev_stop(struct adf_accel_dev *accel_dev);
void adf_dev_shutdown(struct adf_accel_dev *accel_dev);
+void adf_enable_pf2vf_interrupts(struct adf_accel_dev *accel_dev);
+void adf_disable_pf2vf_interrupts(struct adf_accel_dev *accel_dev);
+int adf_iov_putmsg(struct adf_accel_dev *accel_dev, u32 msg, u8 vf_nr);
+void adf_pf2vf_notify_restarting(struct adf_accel_dev *accel_dev);
+int adf_enable_vf2pf_comms(struct adf_accel_dev *accel_dev);
+void adf_devmgr_update_class_index(struct adf_hw_device_data *hw_data);
+void adf_clean_vf_map(bool);
+
int adf_ctl_dev_register(void);
void adf_ctl_dev_unregister(void);
int adf_processes_dev_register(void);
void adf_processes_dev_unregister(void);
-int adf_devmgr_add_dev(struct adf_accel_dev *accel_dev);
-void adf_devmgr_rm_dev(struct adf_accel_dev *accel_dev);
+int adf_devmgr_add_dev(struct adf_accel_dev *accel_dev,
+ struct adf_accel_dev *pf);
+void adf_devmgr_rm_dev(struct adf_accel_dev *accel_dev,
+ struct adf_accel_dev *pf);
struct list_head *adf_devmgr_get_head(void);
struct adf_accel_dev *adf_devmgr_get_dev_by_id(uint32_t id);
struct adf_accel_dev *adf_devmgr_get_first(void);
@@ -211,4 +221,21 @@ int qat_uclo_map_uof_obj(struct icp_qat_fw_loader_handle *handle,
void *addr_ptr, int mem_size);
void qat_uclo_wr_mimage(struct icp_qat_fw_loader_handle *handle,
void *addr_ptr, int mem_size);
+#if defined(CONFIG_PCI_IOV)
+int adf_sriov_configure(struct pci_dev *pdev, int numvfs);
+void adf_disable_sriov(struct adf_accel_dev *accel_dev);
+void adf_disable_vf2pf_interrupts(struct adf_accel_dev *accel_dev,
+ uint32_t vf_mask);
+void adf_enable_vf2pf_interrupts(struct adf_accel_dev *accel_dev,
+ uint32_t vf_mask);
+#else
+static inline int adf_sriov_configure(struct pci_dev *pdev, int numvfs)
+{
+ return 0;
+}
+
+static inline void adf_disable_sriov(struct adf_accel_dev *accel_dev)
+{
+}
+#endif
#endif
diff --git a/drivers/crypto/qat/qat_common/adf_ctl_drv.c b/drivers/crypto/qat/qat_common/adf_ctl_drv.c
index e056b9e..cd8a12a 100644
--- a/drivers/crypto/qat/qat_common/adf_ctl_drv.c
+++ b/drivers/crypto/qat/qat_common/adf_ctl_drv.c
@@ -398,10 +398,9 @@ static int adf_ctl_ioctl_get_status(struct file *fp, unsigned int cmd,
}
accel_dev = adf_devmgr_get_dev_by_id(dev_info.accel_id);
- if (!accel_dev) {
- pr_err("QAT: Device %d not found\n", dev_info.accel_id);
+ if (!accel_dev)
return -ENODEV;
- }
+
hw_data = accel_dev->hw_device;
dev_info.state = adf_dev_started(accel_dev) ? DEV_UP : DEV_DOWN;
dev_info.num_ae = hw_data->get_num_aes(hw_data);
@@ -495,6 +494,7 @@ static void __exit adf_unregister_ctl_device_driver(void)
adf_exit_aer();
qat_crypto_unregister();
qat_algs_exit();
+ adf_clean_vf_map(false);
mutex_destroy(&adf_ctl_lock);
}
diff --git a/drivers/crypto/qat/qat_common/adf_dev_mgr.c b/drivers/crypto/qat/qat_common/adf_dev_mgr.c
index b574a82..8dfdb8f 100644
--- a/drivers/crypto/qat/qat_common/adf_dev_mgr.c
+++ b/drivers/crypto/qat/qat_common/adf_dev_mgr.c
@@ -50,21 +50,125 @@
#include "adf_common_drv.h"
static LIST_HEAD(accel_table);
+static LIST_HEAD(vfs_table);
static DEFINE_MUTEX(table_lock);
static uint32_t num_devices;
+struct vf_id_map {
+ u32 bdf;
+ u32 id;
+ u32 fake_id;
+ bool attached;
+ struct list_head list;
+};
+
+static int adf_get_vf_id(struct adf_accel_dev *vf)
+{
+ return ((7 * (PCI_SLOT(accel_to_pci_dev(vf)->devfn) - 1)) +
+ PCI_FUNC(accel_to_pci_dev(vf)->devfn) +
+ (PCI_SLOT(accel_to_pci_dev(vf)->devfn) - 1));
+}
+
+static int adf_get_vf_num(struct adf_accel_dev *vf)
+{
+ return (accel_to_pci_dev(vf)->bus->number << 8) | adf_get_vf_id(vf);
+}
+
+static struct vf_id_map *adf_find_vf(u32 bdf)
+{
+ struct list_head *itr;
+
+ list_for_each(itr, &vfs_table) {
+ struct vf_id_map *ptr =
+ list_entry(itr, struct vf_id_map, list);
+
+ if (ptr->bdf == bdf)
+ return ptr;
+ }
+ return NULL;
+}
+
+static int adf_get_vf_real_id(u32 fake)
+{
+ struct list_head *itr;
+
+ list_for_each(itr, &vfs_table) {
+ struct vf_id_map *ptr =
+ list_entry(itr, struct vf_id_map, list);
+ if (ptr->fake_id == fake)
+ return ptr->id;
+ }
+ return -1;
+}
+
+/**
+ * adf_clean_vf_map() - Cleans VF id mapings
+ *
+ * Function cleans internal ids for virtual functions.
+ * @vf: flag indicating whether mappings is cleaned
+ * for vfs only or for vfs and pfs
+ */
+void adf_clean_vf_map(bool vf)
+{
+ struct vf_id_map *map;
+ struct list_head *ptr, *tmp;
+
+ mutex_lock(&table_lock);
+ list_for_each_safe(ptr, tmp, &vfs_table) {
+ map = list_entry(ptr, struct vf_id_map, list);
+ if (map->bdf != -1)
+ num_devices--;
+
+ if (vf && map->bdf == -1)
+ continue;
+
+ list_del(ptr);
+ kfree(map);
+ }
+ mutex_unlock(&table_lock);
+}
+EXPORT_SYMBOL_GPL(adf_clean_vf_map);
+
+/**
+ * adf_devmgr_update_class_index() - Update internal index
+ * @hw_data: Pointer to internal device data.
+ *
+ * Function updates internal dev index for VFs
+ */
+void adf_devmgr_update_class_index(struct adf_hw_device_data *hw_data)
+{
+ struct adf_hw_device_class *class = hw_data->dev_class;
+ struct list_head *itr;
+ int i = 0;
+
+ list_for_each(itr, &accel_table) {
+ struct adf_accel_dev *ptr =
+ list_entry(itr, struct adf_accel_dev, list);
+
+ if (ptr->hw_device->dev_class == class)
+ ptr->hw_device->instance_id = i++;
+
+ if (i == class->instances)
+ break;
+ }
+}
+EXPORT_SYMBOL_GPL(adf_devmgr_update_class_index);
+
/**
* adf_devmgr_add_dev() - Add accel_dev to the acceleration framework
* @accel_dev: Pointer to acceleration device.
+ * @pf: Corresponding PF if the accel_dev is a VF
*
* Function adds acceleration device to the acceleration framework.
* To be used by QAT device specific drivers.
*
* Return: 0 on success, error code otherwise.
*/
-int adf_devmgr_add_dev(struct adf_accel_dev *accel_dev)
+int adf_devmgr_add_dev(struct adf_accel_dev *accel_dev,
+ struct adf_accel_dev *pf)
{
struct list_head *itr;
+ int ret = 0;
if (num_devices == ADF_MAX_DEVICES) {
dev_err(&GET_DEV(accel_dev), "Only support up to %d devices\n",
@@ -73,20 +177,77 @@ int adf_devmgr_add_dev(struct adf_accel_dev *accel_dev)
}
mutex_lock(&table_lock);
- list_for_each(itr, &accel_table) {
- struct adf_accel_dev *ptr =
+ atomic_set(&accel_dev->ref_count, 0);
+
+ /* PF on host or VF on guest */
+ if (!accel_dev->is_vf || (accel_dev->is_vf && !pf)) {
+ struct vf_id_map *map;
+
+ list_for_each(itr, &accel_table) {
+ struct adf_accel_dev *ptr =
list_entry(itr, struct adf_accel_dev, list);
- if (ptr == accel_dev) {
- mutex_unlock(&table_lock);
- return -EEXIST;
+ if (ptr == accel_dev) {
+ ret = -EEXIST;
+ goto unlock;
+ }
}
+
+ list_add_tail(&accel_dev->list, &accel_table);
+ accel_dev->accel_id = num_devices++;
+
+ map = kzalloc(sizeof(*map), GFP_KERNEL);
+ if (!map) {
+ ret = -ENOMEM;
+ goto unlock;
+ }
+ map->bdf = ~0;
+ map->id = accel_dev->accel_id;
+ map->fake_id = map->id;
+ map->attached = true;
+ list_add_tail(&map->list, &vfs_table);
+ } else if (accel_dev->is_vf && pf) {
+ /* VF on host */
+ struct adf_accel_vf_info *vf_info;
+ struct vf_id_map *map;
+
+ vf_info = pf->pf.vf_info + adf_get_vf_id(accel_dev);
+
+ map = adf_find_vf(adf_get_vf_num(accel_dev));
+ if (map) {
+ struct vf_id_map *next;
+
+ accel_dev->accel_id = map->id;
+ list_add_tail(&accel_dev->list, &accel_table);
+ map->fake_id++;
+ map->attached = true;
+ next = list_next_entry(map, list);
+ while (next && &next->list != &vfs_table) {
+ next->fake_id++;
+ next = list_next_entry(next, list);
+ }
+
+ ret = 0;
+ goto unlock;
+ }
+
+ map = kzalloc(sizeof(*map), GFP_KERNEL);
+ if (!map) {
+ ret = -ENOMEM;
+ goto unlock;
+ }
+
+ accel_dev->accel_id = num_devices++;
+ list_add_tail(&accel_dev->list, &accel_table);
+ map->bdf = adf_get_vf_num(accel_dev);
+ map->id = accel_dev->accel_id;
+ map->fake_id = map->id;
+ map->attached = true;
+ list_add_tail(&map->list, &vfs_table);
}
- atomic_set(&accel_dev->ref_count, 0);
- list_add_tail(&accel_dev->list, &accel_table);
- accel_dev->accel_id = num_devices++;
+unlock:
mutex_unlock(&table_lock);
- return 0;
+ return ret;
}
EXPORT_SYMBOL_GPL(adf_devmgr_add_dev);
@@ -98,17 +259,37 @@ struct list_head *adf_devmgr_get_head(void)
/**
* adf_devmgr_rm_dev() - Remove accel_dev from the acceleration framework.
* @accel_dev: Pointer to acceleration device.
+ * @pf: Corresponding PF if the accel_dev is a VF
*
* Function removes acceleration device from the acceleration framework.
* To be used by QAT device specific drivers.
*
* Return: void
*/
-void adf_devmgr_rm_dev(struct adf_accel_dev *accel_dev)
+void adf_devmgr_rm_dev(struct adf_accel_dev *accel_dev,
+ struct adf_accel_dev *pf)
{
mutex_lock(&table_lock);
+ if (!accel_dev->is_vf || (accel_dev->is_vf && !pf)) {
+ num_devices--;
+ } else if (accel_dev->is_vf && pf) {
+ struct vf_id_map *map, *next;
+
+ map = adf_find_vf(adf_get_vf_num(accel_dev));
+ if (!map) {
+ dev_err(&GET_DEV(accel_dev), "Failed to find VF map\n");
+ goto unlock;
+ }
+ map->fake_id--;
+ map->attached = false;
+ next = list_next_entry(map, list);
+ while (next && &next->list != &vfs_table) {
+ next->fake_id--;
+ next = list_next_entry(next, list);
+ }
+ }
+unlock:
list_del(&accel_dev->list);
- num_devices--;
mutex_unlock(&table_lock);
}
EXPORT_SYMBOL_GPL(adf_devmgr_rm_dev);
@@ -154,17 +335,24 @@ EXPORT_SYMBOL_GPL(adf_devmgr_pci_to_accel_dev);
struct adf_accel_dev *adf_devmgr_get_dev_by_id(uint32_t id)
{
struct list_head *itr;
+ int real_id;
mutex_lock(&table_lock);
+ real_id = adf_get_vf_real_id(id);
+ if (real_id < 0)
+ goto unlock;
+
+ id = real_id;
+
list_for_each(itr, &accel_table) {
struct adf_accel_dev *ptr =
list_entry(itr, struct adf_accel_dev, list);
-
if (ptr->accel_id == id) {
mutex_unlock(&table_lock);
return ptr;
}
}
+unlock:
mutex_unlock(&table_lock);
return NULL;
}
@@ -180,16 +368,52 @@ int adf_devmgr_verify_id(uint32_t id)
return -ENODEV;
}
+static int adf_get_num_dettached_vfs(void)
+{
+ struct list_head *itr;
+ int vfs = 0;
+
+ mutex_lock(&table_lock);
+ list_for_each(itr, &vfs_table) {
+ struct vf_id_map *ptr =
+ list_entry(itr, struct vf_id_map, list);
+ if (ptr->bdf != ~0 && !ptr->attached)
+ vfs++;
+ }
+ mutex_unlock(&table_lock);
+ return vfs;
+}
+
void adf_devmgr_get_num_dev(uint32_t *num)
{
- *num = num_devices;
+ *num = num_devices - adf_get_num_dettached_vfs();
}
+/**
+ * adf_dev_in_use() - Check whether accel_dev is currently in use
+ * @accel_dev: Pointer to acceleration device.
+ *
+ * To be used by QAT device specific drivers.
+ *
+ * Return: 1 when device is in use, 0 otherwise.
+ */
int adf_dev_in_use(struct adf_accel_dev *accel_dev)
{
return atomic_read(&accel_dev->ref_count) != 0;
}
+EXPORT_SYMBOL_GPL(adf_dev_in_use);
+/**
+ * adf_dev_get() - Increment accel_dev reference count
+ * @accel_dev: Pointer to acceleration device.
+ *
+ * Increment the accel_dev refcount and if this is the first time
+ * incrementing it during this period the accel_dev is in use,
+ * increment the module refcount too.
+ * To be used by QAT device specific drivers.
+ *
+ * Return: 0 when successful, EFAULT when fail to bump module refcount
+ */
int adf_dev_get(struct adf_accel_dev *accel_dev)
{
if (atomic_add_return(1, &accel_dev->ref_count) == 1)
@@ -197,19 +421,50 @@ int adf_dev_get(struct adf_accel_dev *accel_dev)
return -EFAULT;
return 0;
}
+EXPORT_SYMBOL_GPL(adf_dev_get);
+/**
+ * adf_dev_put() - Decrement accel_dev reference count
+ * @accel_dev: Pointer to acceleration device.
+ *
+ * Decrement the accel_dev refcount and if this is the last time
+ * decrementing it during this period the accel_dev is in use,
+ * decrement the module refcount too.
+ * To be used by QAT device specific drivers.
+ *
+ * Return: void
+ */
void adf_dev_put(struct adf_accel_dev *accel_dev)
{
if (atomic_sub_return(1, &accel_dev->ref_count) == 0)
module_put(accel_dev->owner);
}
+EXPORT_SYMBOL_GPL(adf_dev_put);
+/**
+ * adf_devmgr_in_reset() - Check whether device is in reset
+ * @accel_dev: Pointer to acceleration device.
+ *
+ * To be used by QAT device specific drivers.
+ *
+ * Return: 1 when the device is being reset, 0 otherwise.
+ */
int adf_devmgr_in_reset(struct adf_accel_dev *accel_dev)
{
return test_bit(ADF_STATUS_RESTARTING, &accel_dev->status);
}
+EXPORT_SYMBOL_GPL(adf_devmgr_in_reset);
+/**
+ * adf_dev_started() - Check whether device has started
+ * @accel_dev: Pointer to acceleration device.
+ *
+ * To be used by QAT device specific drivers.
+ *
+ * Return: 1 when the device has started, 0 otherwise
+ */
int adf_dev_started(struct adf_accel_dev *accel_dev)
{
return test_bit(ADF_STATUS_STARTED, &accel_dev->status);
}
+EXPORT_SYMBOL_GPL(adf_dev_started);
diff --git a/drivers/crypto/qat/qat_common/adf_init.c b/drivers/crypto/qat/qat_common/adf_init.c
index 1aaa5fd..ac37a89 100644
--- a/drivers/crypto/qat/qat_common/adf_init.c
+++ b/drivers/crypto/qat/qat_common/adf_init.c
@@ -187,6 +187,7 @@ int adf_dev_init(struct adf_accel_dev *accel_dev)
}
hw_data->enable_error_correction(accel_dev);
+ hw_data->enable_vf2pf_comms(accel_dev);
return 0;
}
@@ -235,7 +236,8 @@ int adf_dev_start(struct adf_accel_dev *accel_dev)
clear_bit(ADF_STATUS_STARTING, &accel_dev->status);
set_bit(ADF_STATUS_STARTED, &accel_dev->status);
- if (qat_algs_register() || qat_asym_algs_register()) {
+ if (!list_empty(&accel_dev->crypto_list) &&
+ (qat_algs_register() || qat_asym_algs_register())) {
dev_err(&GET_DEV(accel_dev),
"Failed to register crypto algs\n");
set_bit(ADF_STATUS_STARTING, &accel_dev->status);
@@ -270,11 +272,12 @@ int adf_dev_stop(struct adf_accel_dev *accel_dev)
clear_bit(ADF_STATUS_STARTING, &accel_dev->status);
clear_bit(ADF_STATUS_STARTED, &accel_dev->status);
- if (qat_algs_unregister())
+ if (!list_empty(&accel_dev->crypto_list) && qat_algs_unregister())
dev_err(&GET_DEV(accel_dev),
"Failed to unregister crypto algs\n");
- qat_asym_algs_unregister();
+ if (!list_empty(&accel_dev->crypto_list))
+ qat_asym_algs_unregister();
list_for_each(list_itr, &service_table) {
service = list_entry(list_itr, struct service_hndl, list);
@@ -363,6 +366,7 @@ void adf_dev_shutdown(struct adf_accel_dev *accel_dev)
if (hw_data->exit_admin_comms)
hw_data->exit_admin_comms(accel_dev);
+ hw_data->disable_iov(accel_dev);
adf_cleanup_etr_data(accel_dev);
}
EXPORT_SYMBOL_GPL(adf_dev_shutdown);
diff --git a/drivers/crypto/qat/qat_common/adf_pf2vf_msg.c b/drivers/crypto/qat/qat_common/adf_pf2vf_msg.c
new file mode 100644
index 0000000..c5790cd
--- /dev/null
+++ b/drivers/crypto/qat/qat_common/adf_pf2vf_msg.c
@@ -0,0 +1,336 @@
+/*
+ This file is provided under a dual BSD/GPLv2 license. When using or
+ redistributing this file, you may do so under either license.
+
+ GPL LICENSE SUMMARY
+ Copyright(c) 2015 Intel Corporation.
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of version 2 of the GNU General Public License as
+ published by the Free Software Foundation.
+
+ This program is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ General Public License for more details.
+
+ Contact Information:
+ qat-linux@xxxxxxxxx
+
+ BSD LICENSE
+ Copyright(c) 2015 Intel Corporation.
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions
+ are met:
+
+ * Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in
+ the documentation and/or other materials provided with the
+ distribution.
+ * Neither the name of Intel Corporation nor the names of its
+ contributors may be used to endorse or promote products derived
+ from this software without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#include <linux/pci.h>
+#include <linux/mutex.h>
+#include <linux/delay.h>
+#include "adf_accel_devices.h"
+#include "adf_common_drv.h"
+#include "adf_pf2vf_msg.h"
+
+#define ADF_DH895XCC_EP_OFFSET 0x3A000
+#define ADF_DH895XCC_ERRMSK3 (ADF_DH895XCC_EP_OFFSET + 0x1C)
+#define ADF_DH895XCC_ERRMSK3_VF2PF_L_MASK(vf_mask) ((vf_mask & 0xFFFF) << 9)
+#define ADF_DH895XCC_ERRMSK5 (ADF_DH895XCC_EP_OFFSET + 0xDC)
+#define ADF_DH895XCC_ERRMSK5_VF2PF_U_MASK(vf_mask) (vf_mask >> 16)
+
+/**
+ * adf_enable_pf2vf_interrupts() - Enable PF to VF interrupts
+ * @accel_dev: Pointer to acceleration device.
+ *
+ * Function enables PF to VF interrupts
+ */
+void adf_enable_pf2vf_interrupts(struct adf_accel_dev *accel_dev)
+{
+ struct adf_accel_pci *pci_info = &accel_dev->accel_pci_dev;
+ struct adf_hw_device_data *hw_data = accel_dev->hw_device;
+ void __iomem *pmisc_bar_addr =
+ pci_info->pci_bars[hw_data->get_misc_bar_id(hw_data)].virt_addr;
+
+ ADF_CSR_WR(pmisc_bar_addr, hw_data->get_vintmsk_offset(0), 0x0);
+}
+EXPORT_SYMBOL_GPL(adf_enable_pf2vf_interrupts);
+
+/**
+ * adf_disable_pf2vf_interrupts() - Disable PF to VF interrupts
+ * @accel_dev: Pointer to acceleration device.
+ *
+ * Function disables PF to VF interrupts
+ */
+void adf_disable_pf2vf_interrupts(struct adf_accel_dev *accel_dev)
+{
+ struct adf_accel_pci *pci_info = &accel_dev->accel_pci_dev;
+ struct adf_hw_device_data *hw_data = accel_dev->hw_device;
+ void __iomem *pmisc_bar_addr =
+ pci_info->pci_bars[hw_data->get_misc_bar_id(hw_data)].virt_addr;
+
+ ADF_CSR_WR(pmisc_bar_addr, hw_data->get_vintmsk_offset(0), 0x2);
+}
+EXPORT_SYMBOL_GPL(adf_disable_pf2vf_interrupts);
+
+void adf_enable_vf2pf_interrupts(struct adf_accel_dev *accel_dev,
+ u32 vf_mask)
+{
+ struct adf_hw_device_data *hw_data = accel_dev->hw_device;
+ struct adf_bar *pmisc =
+ &GET_BARS(accel_dev)[hw_data->get_misc_bar_id(hw_data)];
+ void __iomem *pmisc_addr = pmisc->virt_addr;
+ u32 reg;
+
+ /* Enable VF2PF Messaging Ints - VFs 1 through 16 per vf_mask[15:0] */
+ if (vf_mask & 0xFFFF) {
+ reg = ADF_CSR_RD(pmisc_addr, ADF_DH895XCC_ERRMSK3);
+ reg &= ~ADF_DH895XCC_ERRMSK3_VF2PF_L_MASK(vf_mask);
+ ADF_CSR_WR(pmisc_addr, ADF_DH895XCC_ERRMSK3, reg);
+ }
+
+ /* Enable VF2PF Messaging Ints - VFs 17 through 32 per vf_mask[31:16] */
+ if (vf_mask >> 16) {
+ reg = ADF_CSR_RD(pmisc_addr, ADF_DH895XCC_ERRMSK5);
+ reg &= ~ADF_DH895XCC_ERRMSK5_VF2PF_U_MASK(vf_mask);
+ ADF_CSR_WR(pmisc_addr, ADF_DH895XCC_ERRMSK5, reg);
+ }
+}
+
+/**
+ * adf_disable_pf2vf_interrupts() - Disable VF to PF interrupts
+ * @accel_dev: Pointer to acceleration device.
+ *
+ * Function disables VF to PF interrupts
+ */
+void adf_disable_vf2pf_interrupts(struct adf_accel_dev *accel_dev, u32 vf_mask)
+{
+ struct adf_hw_device_data *hw_data = accel_dev->hw_device;
+ struct adf_bar *pmisc =
+ &GET_BARS(accel_dev)[hw_data->get_misc_bar_id(hw_data)];
+ void __iomem *pmisc_addr = pmisc->virt_addr;
+ u32 reg;
+
+ /* Disable VF2PF interrupts for VFs 1 through 16 per vf_mask[15:0] */
+ if (vf_mask & 0xFFFF) {
+ reg = ADF_CSR_RD(pmisc_addr, ADF_DH895XCC_ERRMSK3) |
+ ADF_DH895XCC_ERRMSK3_VF2PF_L_MASK(vf_mask);
+ ADF_CSR_WR(pmisc_addr, ADF_DH895XCC_ERRMSK3, reg);
+ }
+
+ /* Disable VF2PF interrupts for VFs 17 through 32 per vf_mask[31:16] */
+ if (vf_mask >> 16) {
+ reg = ADF_CSR_RD(pmisc_addr, ADF_DH895XCC_ERRMSK5) |
+ ADF_DH895XCC_ERRMSK5_VF2PF_U_MASK(vf_mask);
+ ADF_CSR_WR(pmisc_addr, ADF_DH895XCC_ERRMSK5, reg);
+ }
+}
+EXPORT_SYMBOL_GPL(adf_disable_vf2pf_interrupts);
+
+static int __adf_iov_putmsg(struct adf_accel_dev *accel_dev, u32 msg, u8 vf_nr)
+{
+ struct adf_accel_pci *pci_info = &accel_dev->accel_pci_dev;
+ struct adf_hw_device_data *hw_data = accel_dev->hw_device;
+ void __iomem *pmisc_bar_addr =
+ pci_info->pci_bars[hw_data->get_misc_bar_id(hw_data)].virt_addr;
+ u32 val, pf2vf_offset, count = 0;
+ u32 local_in_use_mask, local_in_use_pattern;
+ u32 remote_in_use_mask, remote_in_use_pattern;
+ struct mutex *lock; /* lock preventing concurrent acces of CSR */
+ u32 int_bit;
+ int ret = 0;
+
+ if (accel_dev->is_vf) {
+ pf2vf_offset = hw_data->get_pf2vf_offset(0);
+ lock = &accel_dev->vf.vf2pf_lock;
+ local_in_use_mask = ADF_VF2PF_IN_USE_BY_VF_MASK;
+ local_in_use_pattern = ADF_VF2PF_IN_USE_BY_VF;
+ remote_in_use_mask = ADF_PF2VF_IN_USE_BY_PF_MASK;
+ remote_in_use_pattern = ADF_PF2VF_IN_USE_BY_PF;
+ int_bit = ADF_VF2PF_INT;
+ } else {
+ pf2vf_offset = hw_data->get_pf2vf_offset(vf_nr);
+ lock = &accel_dev->pf.vf_info[vf_nr].pf2vf_lock;
+ local_in_use_mask = ADF_PF2VF_IN_USE_BY_PF_MASK;
+ local_in_use_pattern = ADF_PF2VF_IN_USE_BY_PF;
+ remote_in_use_mask = ADF_VF2PF_IN_USE_BY_VF_MASK;
+ remote_in_use_pattern = ADF_VF2PF_IN_USE_BY_VF;
+ int_bit = ADF_PF2VF_INT;
+ }
+
+ mutex_lock(lock);
+
+ /* Check if PF2VF CSR is in use by remote function */
+ val = ADF_CSR_RD(pmisc_bar_addr, pf2vf_offset);
+ if ((val & remote_in_use_mask) == remote_in_use_pattern) {
+ dev_dbg(&GET_DEV(accel_dev),
+ "PF2VF CSR in use by remote function\n");
+ ret = -EBUSY;
+ goto out;
+ }
+
+ /* Attempt to get ownership of PF2VF CSR */
+ msg &= ~local_in_use_mask;
+ msg |= local_in_use_pattern;
+ ADF_CSR_WR(pmisc_bar_addr, pf2vf_offset, msg);
+
+ /* Wait in case remote func also attempting to get ownership */
+ msleep(ADF_IOV_MSG_COLLISION_DETECT_DELAY);
+
+ val = ADF_CSR_RD(pmisc_bar_addr, pf2vf_offset);
+ if ((val & local_in_use_mask) != local_in_use_pattern) {
+ dev_dbg(&GET_DEV(accel_dev),
+ "PF2VF CSR in use by remote - collision detected\n");
+ ret = -EBUSY;
+ goto out;
+ }
+
+ /*
+ * This function now owns the PV2VF CSR. The IN_USE_BY pattern must
+ * remain in the PF2VF CSR for all writes including ACK from remote
+ * until this local function relinquishes the CSR. Send the message
+ * by interrupting the remote.
+ */
+ ADF_CSR_WR(pmisc_bar_addr, pf2vf_offset, msg | int_bit);
+
+ /* Wait for confirmation from remote func it received the message */
+ do {
+ msleep(ADF_IOV_MSG_ACK_DELAY);
+ val = ADF_CSR_RD(pmisc_bar_addr, pf2vf_offset);
+ } while ((val & int_bit) && (count++ < ADF_IOV_MSG_ACK_MAX_RETRY));
+
+ if (val & int_bit) {
+ dev_dbg(&GET_DEV(accel_dev), "ACK not received from remote\n");
+ val &= ~int_bit;
+ ret = -EIO;
+ }
+
+ /* Finished with PF2VF CSR; relinquish it and leave msg in CSR */
+ ADF_CSR_WR(pmisc_bar_addr, pf2vf_offset, val & ~local_in_use_mask);
+out:
+ mutex_unlock(lock);
+ return ret;
+}
+
+/**
+ * adf_iov_putmsg() - send PF2VF message
+ * @accel_dev: Pointer to acceleration device.
+ * @msg: Message to send
+ * @vf_nr: VF number to which the message will be sent
+ *
+ * Function sends a messge from the PF to a VF
+ *
+ * Return: 0 on success, error code otherwise.
+ */
+int adf_iov_putmsg(struct adf_accel_dev *accel_dev, u32 msg, u8 vf_nr)
+{
+ u32 count = 0;
+ int ret;
+
+ do {
+ ret = __adf_iov_putmsg(accel_dev, msg, vf_nr);
+ if (ret)
+ msleep(ADF_IOV_MSG_RETRY_DELAY);
+ } while (ret && (count++ < ADF_IOV_MSG_MAX_RETRIES));
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(adf_iov_putmsg);
+
+void adf_pf2vf_notify_restarting(struct adf_accel_dev *accel_dev)
+{
+ struct adf_accel_vf_info *vf;
+ u32 msg = (ADF_PF2VF_MSGORIGIN_SYSTEM |
+ (ADF_PF2VF_MSGTYPE_RESTARTING << ADF_PF2VF_MSGTYPE_SHIFT));
+ int i, num_vfs = pci_num_vf(accel_to_pci_dev(accel_dev));
+
+ for (i = 0, vf = accel_dev->pf.vf_info; i < num_vfs; i++, vf++) {
+ if (vf->init && adf_iov_putmsg(accel_dev, msg, i))
+ dev_err(&GET_DEV(accel_dev),
+ "Failed to send restarting msg to VF%d\n", i);
+ }
+}
+
+static int adf_vf2pf_request_version(struct adf_accel_dev *accel_dev)
+{
+ unsigned long timeout = msecs_to_jiffies(ADF_IOV_MSG_RESP_TIMEOUT);
+ struct adf_hw_device_data *hw_data = accel_dev->hw_device;
+ u32 msg = 0;
+ int ret;
+
+ msg = ADF_VF2PF_MSGORIGIN_SYSTEM;
+ msg |= ADF_VF2PF_MSGTYPE_COMPAT_VER_REQ << ADF_VF2PF_MSGTYPE_SHIFT;
+ msg |= ADF_PFVF_COMPATIBILITY_VERSION << ADF_VF2PF_COMPAT_VER_REQ_SHIFT;
+ BUILD_BUG_ON(ADF_PFVF_COMPATIBILITY_VERSION > 255);
+
+ /* Send request from VF to PF */
+ ret = adf_iov_putmsg(accel_dev, msg, 0);
+ if (ret) {
+ dev_err(&GET_DEV(accel_dev),
+ "Failed to send Compatibility Version Request.\n");
+ return ret;
+ }
+
+ /* Wait for response */
+ if (!wait_for_completion_timeout(&accel_dev->vf.iov_msg_completion,
+ timeout)) {
+ dev_err(&GET_DEV(accel_dev),
+ "IOV request/response message timeout expired\n");
+ return -EIO;
+ }
+
+ /* Response from PF received, check compatibility */
+ switch (accel_dev->vf.compatible) {
+ case ADF_PF2VF_VF_COMPATIBLE:
+ break;
+ case ADF_PF2VF_VF_COMPAT_UNKNOWN:
+ /* VF is newer than PF and decides whether it is compatible */
+ if (accel_dev->vf.pf_version >= hw_data->min_iov_compat_ver)
+ break;
+ /* fall through */
+ case ADF_PF2VF_VF_INCOMPATIBLE:
+ dev_err(&GET_DEV(accel_dev),
+ "PF (vers %d) and VF (vers %d) are not compatible\n",
+ accel_dev->vf.pf_version,
+ ADF_PFVF_COMPATIBILITY_VERSION);
+ return -EINVAL;
+ default:
+ dev_err(&GET_DEV(accel_dev),
+ "Invalid response from PF; assume not compatible\n");
+ return -EINVAL;
+ }
+ return ret;
+}
+
+/**
+ * adf_enable_vf2pf_comms() - Function enables communication from vf to pf
+ *
+ * @accel_dev: Pointer to acceleration device virtual function.
+ *
+ * Return: 0 on success, error code otherwise.
+ */
+int adf_enable_vf2pf_comms(struct adf_accel_dev *accel_dev)
+{
+ adf_enable_pf2vf_interrupts(accel_dev);
+ return adf_vf2pf_request_version(accel_dev);
+}
+EXPORT_SYMBOL_GPL(adf_enable_vf2pf_comms);
diff --git a/drivers/crypto/qat/qat_common/adf_pf2vf_msg.h b/drivers/crypto/qat/qat_common/adf_pf2vf_msg.h
new file mode 100644
index 0000000..3ceaa38
--- /dev/null
+++ b/drivers/crypto/qat/qat_common/adf_pf2vf_msg.h
@@ -0,0 +1,144 @@
+/*
+ This file is provided under a dual BSD/GPLv2 license. When using or
+ redistributing this file, you may do so under either license.
+
+ GPL LICENSE SUMMARY
+ Copyright(c) 2015 Intel Corporation.
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of version 2 of the GNU General Public License as
+ published by the Free Software Foundation.
+
+ This program is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ General Public License for more details.
+
+ Contact Information:
+ qat-linux@xxxxxxxxx
+
+ BSD LICENSE
+ Copyright(c) 2015 Intel Corporation.
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions
+ are met:
+
+ * Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in
+ the documentation and/or other materials provided with the
+ distribution.
+ * Neither the name of Intel Corporation nor the names of its
+ contributors may be used to endorse or promote products derived
+ from this software without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+#ifndef ADF_PF2VF_MSG_H
+#define ADF_PF2VF_MSG_H
+
+/*
+ * PF<->VF Messaging
+ * The PF has an array of 32-bit PF2VF registers, one for each VF. The
+ * PF can access all these registers; each VF can access only the one
+ * register associated with that particular VF.
+ *
+ * The register functionally is split into two parts:
+ * The bottom half is for PF->VF messages. In particular when the first
+ * bit of this register (bit 0) gets set an interrupt will be triggered
+ * in the respective VF.
+ * The top half is for VF->PF messages. In particular when the first bit
+ * of this half of register (bit 16) gets set an interrupt will be triggered
+ * in the PF.
+ *
+ * The remaining bits within this register are available to encode messages.
+ * and implement a collision control mechanism to prevent concurrent use of
+ * the PF2VF register by both the PF and VF.
+ *
+ * 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
+ * _______________________________________________
+ * | | | | | | | | | | | | | | | | |
+ * +-----------------------------------------------+
+ * \___________________________/ \_________/ ^ ^
+ * ^ ^ | |
+ * | | | VF2PF Int
+ * | | Message Origin
+ * | Message Type
+ * Message-specific Data/Reserved
+ *
+ * 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
+ * _______________________________________________
+ * | | | | | | | | | | | | | | | | |
+ * +-----------------------------------------------+
+ * \___________________________/ \_________/ ^ ^
+ * ^ ^ | |
+ * | | | PF2VF Int
+ * | | Message Origin
+ * | Message Type
+ * Message-specific Data/Reserved
+ *
+ * Message Origin (Should always be 1)
+ * A legacy out-of-tree QAT driver allowed for a set of messages not supported
+ * by this driver; these had a Msg Origin of 0 and are ignored by this driver.
+ *
+ * When a PF or VF attempts to send a message in the lower or upper 16 bits,
+ * respectively, the other 16 bits are written to first with a defined
+ * IN_USE_BY pattern as part of a collision control scheme (see adf_iov_putmsg).
+ */
+
+#define ADF_PFVF_COMPATIBILITY_VERSION 0x1 /* PF<->VF compat */
+
+/* PF->VF messages */
+#define ADF_PF2VF_INT BIT(0)
+#define ADF_PF2VF_MSGORIGIN_SYSTEM BIT(1)
+#define ADF_PF2VF_MSGTYPE_MASK 0x0000003C
+#define ADF_PF2VF_MSGTYPE_SHIFT 2
+#define ADF_PF2VF_MSGTYPE_RESTARTING 0x01
+#define ADF_PF2VF_MSGTYPE_VERSION_RESP 0x02
+#define ADF_PF2VF_IN_USE_BY_PF 0x6AC20000
+#define ADF_PF2VF_IN_USE_BY_PF_MASK 0xFFFE0000
+
+/* PF->VF Version Response */
+#define ADF_PF2VF_VERSION_RESP_VERS_MASK 0x00003FC0
+#define ADF_PF2VF_VERSION_RESP_VERS_SHIFT 6
+#define ADF_PF2VF_VERSION_RESP_RESULT_MASK 0x0000C000
+#define ADF_PF2VF_VERSION_RESP_RESULT_SHIFT 14
+#define ADF_PF2VF_VF_COMPATIBLE 1
+#define ADF_PF2VF_VF_INCOMPATIBLE 2
+#define ADF_PF2VF_VF_COMPAT_UNKNOWN 3
+
+/* VF->PF messages */
+#define ADF_VF2PF_IN_USE_BY_VF 0x00006AC2
+#define ADF_VF2PF_IN_USE_BY_VF_MASK 0x0000FFFE
+#define ADF_VF2PF_INT BIT(16)
+#define ADF_VF2PF_MSGORIGIN_SYSTEM BIT(17)
+#define ADF_VF2PF_MSGTYPE_MASK 0x003C0000
+#define ADF_VF2PF_MSGTYPE_SHIFT 18
+#define ADF_VF2PF_MSGTYPE_INIT 0x3
+#define ADF_VF2PF_MSGTYPE_SHUTDOWN 0x4
+#define ADF_VF2PF_MSGTYPE_VERSION_REQ 0x5
+#define ADF_VF2PF_MSGTYPE_COMPAT_VER_REQ 0x6
+
+/* VF->PF Compatible Version Request */
+#define ADF_VF2PF_COMPAT_VER_REQ_SHIFT 22
+
+/* Collision detection */
+#define ADF_IOV_MSG_COLLISION_DETECT_DELAY 10
+#define ADF_IOV_MSG_ACK_DELAY 2
+#define ADF_IOV_MSG_ACK_MAX_RETRY 100
+#define ADF_IOV_MSG_RETRY_DELAY 5
+#define ADF_IOV_MSG_MAX_RETRIES 3
+#define ADF_IOV_MSG_RESP_TIMEOUT (ADF_IOV_MSG_ACK_DELAY * \
+ ADF_IOV_MSG_ACK_MAX_RETRY + \
+ ADF_IOV_MSG_COLLISION_DETECT_DELAY)
+#endif /* ADF_IOV_MSG_H */
diff --git a/drivers/crypto/qat/qat_common/adf_sriov.c b/drivers/crypto/qat/qat_common/adf_sriov.c
new file mode 100644
index 0000000..a766fb5
--- /dev/null
+++ b/drivers/crypto/qat/qat_common/adf_sriov.c
@@ -0,0 +1,406 @@
+/*
+ This file is provided under a dual BSD/GPLv2 license. When using or
+ redistributing this file, you may do so under either license.
+
+ GPL LICENSE SUMMARY
+ Copyright(c) 2015 Intel Corporation.
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of version 2 of the GNU General Public License as
+ published by the Free Software Foundation.
+
+ This program is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ General Public License for more details.
+
+ Contact Information:
+ qat-linux@xxxxxxxxx
+
+ BSD LICENSE
+ Copyright(c) 2015 Intel Corporation.
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions
+ are met:
+
+ * Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in
+ the documentation and/or other materials provided with the
+ distribution.
+ * Neither the name of Intel Corporation nor the names of its
+ contributors may be used to endorse or promote products derived
+ from this software without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+#include <linux/workqueue.h>
+#include <linux/pci.h>
+#include <linux/device.h>
+#include <linux/iommu.h>
+#include "adf_common_drv.h"
+#include "adf_cfg.h"
+#include "adf_pf2vf_msg.h"
+
+static struct workqueue_struct *pf2vf_resp_wq;
+
+#define ME2FUNCTION_MAP_A_OFFSET (0x3A400 + 0x190)
+#define ME2FUNCTION_MAP_A_NUM_REGS 96
+
+#define ME2FUNCTION_MAP_B_OFFSET (0x3A400 + 0x310)
+#define ME2FUNCTION_MAP_B_NUM_REGS 12
+
+#define ME2FUNCTION_MAP_REG_SIZE 4
+#define ME2FUNCTION_MAP_VALID BIT(7)
+
+#define READ_CSR_ME2FUNCTION_MAP_A(pmisc_bar_addr, index) \
+ ADF_CSR_RD(pmisc_bar_addr, ME2FUNCTION_MAP_A_OFFSET + \
+ ME2FUNCTION_MAP_REG_SIZE * index)
+
+#define WRITE_CSR_ME2FUNCTION_MAP_A(pmisc_bar_addr, index, value) \
+ ADF_CSR_WR(pmisc_bar_addr, ME2FUNCTION_MAP_A_OFFSET + \
+ ME2FUNCTION_MAP_REG_SIZE * index, value)
+
+#define READ_CSR_ME2FUNCTION_MAP_B(pmisc_bar_addr, index) \
+ ADF_CSR_RD(pmisc_bar_addr, ME2FUNCTION_MAP_B_OFFSET + \
+ ME2FUNCTION_MAP_REG_SIZE * index)
+
+#define WRITE_CSR_ME2FUNCTION_MAP_B(pmisc_bar_addr, index, value) \
+ ADF_CSR_WR(pmisc_bar_addr, ME2FUNCTION_MAP_B_OFFSET + \
+ ME2FUNCTION_MAP_REG_SIZE * index, value)
+
+struct adf_pf2vf_resp_data {
+ struct work_struct pf2vf_resp_work;
+ struct adf_accel_dev *accel_dev;
+ u32 resp;
+ u8 vf_nr;
+};
+
+static void adf_iov_send_resp(struct work_struct *work)
+{
+ struct adf_pf2vf_resp_data *pf2vf_resp_data =
+ container_of(work, struct adf_pf2vf_resp_data, pf2vf_resp_work);
+
+ if (adf_iov_putmsg(pf2vf_resp_data->accel_dev, pf2vf_resp_data->resp,
+ pf2vf_resp_data->vf_nr)) {
+ dev_err(&GET_DEV(pf2vf_resp_data->accel_dev),
+ "Failed to send response\n");
+ }
+
+ kfree(pf2vf_resp_data);
+}
+
+static void adf_vf2pf_bh_handler(void *data)
+{
+ struct adf_accel_vf_info *vf_info = (struct adf_accel_vf_info *)data;
+ struct adf_accel_dev *accel_dev = vf_info->accel_dev;
+ struct adf_hw_device_data *hw_data = accel_dev->hw_device;
+ struct adf_bar *pmisc =
+ &GET_BARS(accel_dev)[hw_data->get_misc_bar_id(hw_data)];
+ void __iomem *pmisc_addr = pmisc->virt_addr;
+ u32 msg;
+
+ /* Read message from the VF */
+ msg = ADF_CSR_RD(pmisc_addr, hw_data->get_pf2vf_offset(vf_info->vf_nr));
+
+ if (!(msg & ADF_VF2PF_MSGORIGIN_SYSTEM))
+ /* Ignore legacy non-system (non-kernel) VF2PF messages */
+ goto err;
+
+ switch ((msg & ADF_VF2PF_MSGTYPE_MASK) >> ADF_VF2PF_MSGTYPE_SHIFT) {
+ case ADF_VF2PF_MSGTYPE_COMPAT_VER_REQ:
+ {
+ u8 vf_compat_ver = msg >> ADF_VF2PF_COMPAT_VER_REQ_SHIFT;
+ struct adf_pf2vf_resp_data *pf2vf_resp_data;
+ u32 resp = (ADF_PF2VF_MSGORIGIN_SYSTEM |
+ (ADF_PF2VF_MSGTYPE_VERSION_RESP <<
+ ADF_PF2VF_MSGTYPE_SHIFT) |
+ (ADF_PFVF_COMPATIBILITY_VERSION <<
+ ADF_PF2VF_VERSION_RESP_VERS_SHIFT));
+
+ dev_dbg(&GET_DEV(accel_dev),
+ "Compatibility Version Request from VF%d vers=%u\n",
+ vf_info->vf_nr + 1, vf_compat_ver);
+
+ if (vf_compat_ver < hw_data->min_iov_compat_ver) {
+ dev_err(&GET_DEV(accel_dev),
+ "VF (vers %d) incompatible with PF (vers %d)\n",
+ vf_compat_ver, ADF_PFVF_COMPATIBILITY_VERSION);
+ resp |= ADF_PF2VF_VF_INCOMPATIBLE <<
+ ADF_PF2VF_VERSION_RESP_RESULT_SHIFT;
+ } else if (vf_compat_ver > ADF_PFVF_COMPATIBILITY_VERSION) {
+ dev_err(&GET_DEV(accel_dev),
+ "VF (vers %d) compat with PF (vers %d) unkn.\n",
+ vf_compat_ver, ADF_PFVF_COMPATIBILITY_VERSION);
+ resp |= ADF_PF2VF_VF_COMPAT_UNKNOWN <<
+ ADF_PF2VF_VERSION_RESP_RESULT_SHIFT;
+ } else {
+ dev_dbg(&GET_DEV(accel_dev),
+ "VF (vers %d) compatible with PF (vers %d)\n",
+ vf_compat_ver, ADF_PFVF_COMPATIBILITY_VERSION);
+ resp |= ADF_PF2VF_VF_COMPATIBLE <<
+ ADF_PF2VF_VERSION_RESP_RESULT_SHIFT;
+ }
+
+ pf2vf_resp_data = kzalloc(sizeof(*pf2vf_resp_data), GFP_ATOMIC);
+ if (!pf2vf_resp_data)
+ return;
+
+ pf2vf_resp_data->accel_dev = accel_dev;
+ pf2vf_resp_data->vf_nr = vf_info->vf_nr;
+ pf2vf_resp_data->resp = resp;
+ INIT_WORK(&pf2vf_resp_data->pf2vf_resp_work, adf_iov_send_resp);
+ queue_work(pf2vf_resp_wq, &pf2vf_resp_data->pf2vf_resp_work);
+ }
+ break;
+ case ADF_VF2PF_MSGTYPE_INIT:
+ {
+ dev_dbg(&GET_DEV(accel_dev),
+ "Init message received from VF%d 0x%x\n",
+ vf_info->vf_nr + 1, msg);
+ vf_info->init = true;
+ }
+ break;
+ case ADF_VF2PF_MSGTYPE_SHUTDOWN:
+ {
+ dev_dbg(&GET_DEV(accel_dev),
+ "Shutdown message received from VF%d 0x%x\n",
+ vf_info->vf_nr + 1, msg);
+ vf_info->init = false;
+ }
+ break;
+ case ADF_VF2PF_MSGTYPE_VERSION_REQ:
+ dev_err(&GET_DEV(accel_dev),
+ "Incompatible VersionRequest received from VF%d 0x%x\n",
+ vf_info->vf_nr + 1, msg);
+ break;
+ default:
+ goto err;
+ }
+
+ /* To ACK, clear the VF2PFINT bit */
+ msg &= ~ADF_VF2PF_INT;
+ ADF_CSR_WR(pmisc_addr, hw_data->get_pf2vf_offset(vf_info->vf_nr), msg);
+
+ /* re-enable interrupt on PF from this VF */
+ adf_enable_vf2pf_interrupts(accel_dev, (1 << vf_info->vf_nr));
+ return;
+err:
+ dev_err(&GET_DEV(accel_dev), "Unknown message from VF%d (0x%x);\n",
+ vf_info->vf_nr + 1, msg);
+}
+
+static int adf_enable_sriov(struct adf_accel_dev *accel_dev)
+{
+ struct pci_dev *pdev = accel_to_pci_dev(accel_dev);
+ int totalvfs = pci_sriov_get_totalvfs(pdev);
+ struct adf_hw_device_data *hw_data = accel_dev->hw_device;
+ struct adf_bar *pmisc =
+ &GET_BARS(accel_dev)[hw_data->get_misc_bar_id(hw_data)];
+ void __iomem *pmisc_addr = pmisc->virt_addr;
+ struct adf_accel_vf_info *vf_info;
+ int i, ret;
+ u32 reg;
+
+ /* Workqueue for PF2VF responses */
+ pf2vf_resp_wq = create_workqueue("qat_pf2vf_resp_wq");
+ if (!pf2vf_resp_wq)
+ return -ENOMEM;
+
+ for (i = 0, vf_info = accel_dev->pf.vf_info; i < totalvfs;
+ i++, vf_info++) {
+ /* This ptr will be populated when VFs will be created */
+ vf_info->accel_dev = accel_dev;
+ vf_info->vf_nr = i;
+
+ tasklet_init(&vf_info->vf2pf_bh_tasklet,
+ (void *)adf_vf2pf_bh_handler,
+ (unsigned long)vf_info);
+ mutex_init(&vf_info->pf2vf_lock);
+ ratelimit_state_init(&vf_info->vf2pf_ratelimit,
+ DEFAULT_RATELIMIT_INTERVAL,
+ DEFAULT_RATELIMIT_BURST);
+ }
+
+ /* Set Valid bits in ME Thread to PCIe Function Mapping Group A */
+ for (i = 0; i < ME2FUNCTION_MAP_A_NUM_REGS; i++) {
+ reg = READ_CSR_ME2FUNCTION_MAP_A(pmisc_addr, i);
+ reg |= ME2FUNCTION_MAP_VALID;
+ WRITE_CSR_ME2FUNCTION_MAP_A(pmisc_addr, i, reg);
+ }
+
+ /* Set Valid bits in ME Thread to PCIe Function Mapping Group B */
+ for (i = 0; i < ME2FUNCTION_MAP_B_NUM_REGS; i++) {
+ reg = READ_CSR_ME2FUNCTION_MAP_B(pmisc_addr, i);
+ reg |= ME2FUNCTION_MAP_VALID;
+ WRITE_CSR_ME2FUNCTION_MAP_B(pmisc_addr, i, reg);
+ }
+
+ /* Enable VF to PF interrupts for all VFs */
+ adf_enable_vf2pf_interrupts(accel_dev, GENMASK_ULL(totalvfs - 1, 0));
+
+ /*
+ * Due to the hardware design, when SR-IOV and the ring arbiter
+ * are enabled all the VFs supported in hardware must be enabled in
+ * order for all the hardware resources (i.e. bundles) to be usable.
+ * When SR-IOV is enabled, each of the VFs will own one bundle.
+ */
+ ret = pci_enable_sriov(pdev, totalvfs);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+/**
+ * adf_disable_sriov() - Disable SRIOV for the device
+ * @pdev: Pointer to pci device.
+ *
+ * Function disables SRIOV for the pci device.
+ *
+ * Return: 0 on success, error code otherwise.
+ */
+void adf_disable_sriov(struct adf_accel_dev *accel_dev)
+{
+ struct adf_hw_device_data *hw_data = accel_dev->hw_device;
+ struct adf_bar *pmisc =
+ &GET_BARS(accel_dev)[hw_data->get_misc_bar_id(hw_data)];
+ void __iomem *pmisc_addr = pmisc->virt_addr;
+ int totalvfs = pci_sriov_get_totalvfs(accel_to_pci_dev(accel_dev));
+ struct adf_accel_vf_info *vf;
+ u32 reg;
+ int i;
+
+ if (!accel_dev->pf.vf_info)
+ return;
+
+ adf_pf2vf_notify_restarting(accel_dev);
+
+ pci_disable_sriov(accel_to_pci_dev(accel_dev));
+
+ /* Disable VF to PF interrupts */
+ adf_disable_vf2pf_interrupts(accel_dev, 0xFFFFFFFF);
+
+ /* Clear Valid bits in ME Thread to PCIe Function Mapping Group A */
+ for (i = 0; i < ME2FUNCTION_MAP_A_NUM_REGS; i++) {
+ reg = READ_CSR_ME2FUNCTION_MAP_A(pmisc_addr, i);
+ reg &= ~ME2FUNCTION_MAP_VALID;
+ WRITE_CSR_ME2FUNCTION_MAP_A(pmisc_addr, i, reg);
+ }
+
+ /* Clear Valid bits in ME Thread to PCIe Function Mapping Group B */
+ for (i = 0; i < ME2FUNCTION_MAP_B_NUM_REGS; i++) {
+ reg = READ_CSR_ME2FUNCTION_MAP_B(pmisc_addr, i);
+ reg &= ~ME2FUNCTION_MAP_VALID;
+ WRITE_CSR_ME2FUNCTION_MAP_B(pmisc_addr, i, reg);
+ }
+
+ for (i = 0, vf = accel_dev->pf.vf_info; i < totalvfs; i++, vf++) {
+ tasklet_disable(&vf->vf2pf_bh_tasklet);
+ tasklet_kill(&vf->vf2pf_bh_tasklet);
+ mutex_destroy(&vf->pf2vf_lock);
+ }
+
+ kfree(accel_dev->pf.vf_info);
+ accel_dev->pf.vf_info = NULL;
+
+ if (pf2vf_resp_wq) {
+ destroy_workqueue(pf2vf_resp_wq);
+ pf2vf_resp_wq = NULL;
+ }
+}
+EXPORT_SYMBOL_GPL(adf_disable_sriov);
+
+/**
+ * adf_sriov_configure() - Enable SRIOV for the device
+ * @pdev: Pointer to pci device.
+ *
+ * Function enables SRIOV for the pci device.
+ *
+ * Return: 0 on success, error code otherwise.
+ */
+int adf_sriov_configure(struct pci_dev *pdev, int numvfs)
+{
+ struct adf_accel_dev *accel_dev = adf_devmgr_pci_to_accel_dev(pdev);
+ int totalvfs = pci_sriov_get_totalvfs(pdev);
+ unsigned long val;
+ int ret;
+
+ if (!accel_dev) {
+ dev_err(&pdev->dev, "Failed to find accel_dev\n");
+ return -EFAULT;
+ }
+
+ if (!iommu_present(&pci_bus_type)) {
+ dev_err(&pdev->dev,
+ "IOMMU must be enabled for SR-IOV to work\n");
+ return -EINVAL;
+ }
+
+ if (accel_dev->pf.vf_info) {
+ dev_info(&pdev->dev, "Already enabled for this device\n");
+ return -EINVAL;
+ }
+
+ if (adf_dev_started(accel_dev)) {
+ if (adf_devmgr_in_reset(accel_dev) ||
+ adf_dev_in_use(accel_dev)) {
+ dev_err(&GET_DEV(accel_dev), "Device busy\n");
+ return -EBUSY;
+ }
+
+ if (adf_dev_stop(accel_dev)) {
+ dev_err(&GET_DEV(accel_dev),
+ "Failed to stop qat_dev%d\n",
+ accel_dev->accel_id);
+ return -EFAULT;
+ }
+
+ adf_dev_shutdown(accel_dev);
+ }
+
+ if (adf_cfg_section_add(accel_dev, ADF_KERNEL_SEC))
+ return -EFAULT;
+ val = 0;
+ if (adf_cfg_add_key_value_param(accel_dev, ADF_KERNEL_SEC,
+ ADF_NUM_CY, (void *)&val, ADF_DEC))
+ return -EFAULT;
+
+ set_bit(ADF_STATUS_CONFIGURED, &accel_dev->status);
+
+ /* Allocate memory for VF info structs */
+ accel_dev->pf.vf_info = kcalloc(totalvfs,
+ sizeof(struct adf_accel_vf_info),
+ GFP_KERNEL);
+ if (!accel_dev->pf.vf_info)
+ return -ENOMEM;
+
+ if (adf_dev_init(accel_dev)) {
+ dev_err(&GET_DEV(accel_dev), "Failed to init qat_dev%d\n",
+ accel_dev->accel_id);
+ return -EFAULT;
+ }
+
+ if (adf_dev_start(accel_dev)) {
+ dev_err(&GET_DEV(accel_dev), "Failed to start qat_dev%d\n",
+ accel_dev->accel_id);
+ return -EFAULT;
+ }
+
+ ret = adf_enable_sriov(accel_dev);
+ if (ret)
+ return ret;
+
+ return numvfs;
+}
+EXPORT_SYMBOL_GPL(adf_sriov_configure);
diff --git a/drivers/crypto/qat/qat_common/qat_crypto.c b/drivers/crypto/qat/qat_common/qat_crypto.c
index 359ae94..07c2f9f 100644
--- a/drivers/crypto/qat/qat_common/qat_crypto.c
+++ b/drivers/crypto/qat/qat_common/qat_crypto.c
@@ -103,9 +103,11 @@ struct qat_crypto_instance *qat_crypto_get_instance_node(int node)
list_for_each(itr, adf_devmgr_get_head()) {
accel_dev = list_entry(itr, struct adf_accel_dev, list);
+
if ((node == dev_to_node(&GET_DEV(accel_dev)) ||
dev_to_node(&GET_DEV(accel_dev)) < 0) &&
- adf_dev_started(accel_dev))
+ adf_dev_started(accel_dev) &&
+ !list_empty(&accel_dev->crypto_list))
break;
accel_dev = NULL;
}
diff --git a/drivers/crypto/qat/qat_dh895xcc/adf_dh895xcc_hw_data.c b/drivers/crypto/qat/qat_dh895xcc/adf_dh895xcc_hw_data.c
index a3b1be8..ff54257 100644
--- a/drivers/crypto/qat/qat_dh895xcc/adf_dh895xcc_hw_data.c
+++ b/drivers/crypto/qat/qat_dh895xcc/adf_dh895xcc_hw_data.c
@@ -45,6 +45,7 @@
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <adf_accel_devices.h>
+#include <adf_pf2vf_msg.h>
#include <adf_common_drv.h>
#include "adf_dh895xcc_hw_data.h"
#include "adf_drv.h"
@@ -161,6 +162,16 @@ void adf_get_arbiter_mapping(struct adf_accel_dev *accel_dev,
}
}
+static uint32_t get_pf2vf_offset(uint32_t i)
+{
+ return ADF_DH895XCC_PF2VF_OFFSET(i);
+}
+
+static uint32_t get_vintmsk_offset(uint32_t i)
+{
+ return ADF_DH895XCC_VINTMSK_OFFSET(i);
+}
+
static void adf_enable_error_correction(struct adf_accel_dev *accel_dev)
{
struct adf_hw_device_data *hw_device = accel_dev->hw_device;
@@ -197,11 +208,17 @@ static void adf_enable_ints(struct adf_accel_dev *accel_dev)
/* Enable bundle and misc interrupts */
ADF_CSR_WR(addr, ADF_DH895XCC_SMIAPF0_MASK_OFFSET,
- ADF_DH895XCC_SMIA0_MASK);
+ accel_dev->pf.vf_info ? 0 :
+ GENMASK_ULL(GET_MAX_BANKS(accel_dev) - 1, 0));
ADF_CSR_WR(addr, ADF_DH895XCC_SMIAPF1_MASK_OFFSET,
ADF_DH895XCC_SMIA1_MASK);
}
+static int adf_pf_enable_vf2pf_comms(struct adf_accel_dev *accel_dev)
+{
+ return 0;
+}
+
void adf_init_hw_data_dh895xcc(struct adf_hw_device_data *hw_data)
{
hw_data->dev_class = &dh895xcc_class;
@@ -221,17 +238,22 @@ void adf_init_hw_data_dh895xcc(struct adf_hw_device_data *hw_data)
hw_data->get_num_aes = get_num_aes;
hw_data->get_etr_bar_id = get_etr_bar_id;
hw_data->get_misc_bar_id = get_misc_bar_id;
+ hw_data->get_pf2vf_offset = get_pf2vf_offset;
+ hw_data->get_vintmsk_offset = get_vintmsk_offset;
hw_data->get_sram_bar_id = get_sram_bar_id;
hw_data->get_sku = get_sku;
hw_data->fw_name = ADF_DH895XCC_FW;
hw_data->fw_mmp_name = ADF_DH895XCC_MMP;
hw_data->init_admin_comms = adf_init_admin_comms;
hw_data->exit_admin_comms = adf_exit_admin_comms;
+ hw_data->disable_iov = adf_disable_sriov;
hw_data->send_admin_init = adf_send_admin_init;
hw_data->init_arb = adf_init_arb;
hw_data->exit_arb = adf_exit_arb;
hw_data->get_arb_mapping = adf_get_arbiter_mapping;
hw_data->enable_ints = adf_enable_ints;
+ hw_data->enable_vf2pf_comms = adf_pf_enable_vf2pf_comms;
+ hw_data->min_iov_compat_ver = ADF_PFVF_COMPATIBILITY_VERSION;
}
void adf_clean_hw_data_dh895xcc(struct adf_hw_device_data *hw_data)
diff --git a/drivers/crypto/qat/qat_dh895xcc/adf_dh895xcc_hw_data.h b/drivers/crypto/qat/qat_dh895xcc/adf_dh895xcc_hw_data.h
index d410afb..88dffb2 100644
--- a/drivers/crypto/qat/qat_dh895xcc/adf_dh895xcc_hw_data.h
+++ b/drivers/crypto/qat/qat_dh895xcc/adf_dh895xcc_hw_data.h
@@ -80,6 +80,10 @@
#define ADF_DH895XCC_CERRSSMSH(i) (i * 0x4000 + 0x10)
#define ADF_DH895XCC_ERRSSMSH_EN BIT(3)
+#define ADF_DH895XCC_ERRSOU3 (0x3A000 + 0x00C)
+#define ADF_DH895XCC_ERRSOU5 (0x3A000 + 0x0D8)
+#define ADF_DH895XCC_PF2VF_OFFSET(i) (0x3A000 + 0x280 + ((i) * 0x04))
+#define ADF_DH895XCC_VINTMSK_OFFSET(i) (0x3A000 + 0x200 + ((i) * 0x04))
/* FW names */
#define ADF_DH895XCC_FW "qat_895xcc.bin"
#define ADF_DH895XCC_MMP "qat_mmp.bin"
diff --git a/drivers/crypto/qat/qat_dh895xcc/adf_drv.c b/drivers/crypto/qat/qat_dh895xcc/adf_drv.c
index 1837c32..f8dd14f 100644
--- a/drivers/crypto/qat/qat_dh895xcc/adf_drv.c
+++ b/drivers/crypto/qat/qat_dh895xcc/adf_drv.c
@@ -82,16 +82,21 @@ static struct pci_driver adf_driver = {
.id_table = adf_pci_tbl,
.name = adf_driver_name,
.probe = adf_probe,
- .remove = adf_remove
+ .remove = adf_remove,
+ .sriov_configure = adf_sriov_configure,
};
+static void adf_cleanup_pci_dev(struct adf_accel_dev *accel_dev)
+{
+ pci_release_regions(accel_dev->accel_pci_dev.pci_dev);
+ pci_disable_device(accel_dev->accel_pci_dev.pci_dev);
+}
+
static void adf_cleanup_accel(struct adf_accel_dev *accel_dev)
{
struct adf_accel_pci *accel_pci_dev = &accel_dev->accel_pci_dev;
int i;
- adf_dev_shutdown(accel_dev);
-
for (i = 0; i < ADF_PCI_MAX_BARS; i++) {
struct adf_bar *bar = &accel_pci_dev->pci_bars[i];
@@ -108,13 +113,11 @@ static void adf_cleanup_accel(struct adf_accel_dev *accel_dev)
break;
}
kfree(accel_dev->hw_device);
+ accel_dev->hw_device = NULL;
}
adf_cfg_dev_remove(accel_dev);
debugfs_remove(accel_dev->debugfs_dir);
- adf_devmgr_rm_dev(accel_dev);
- pci_release_regions(accel_pci_dev->pci_dev);
- pci_disable_device(accel_pci_dev->pci_dev);
- kfree(accel_dev);
+ adf_devmgr_rm_dev(accel_dev, NULL);
}
static int adf_dev_configure(struct adf_accel_dev *accel_dev)
@@ -205,7 +208,7 @@ static int adf_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
struct adf_hw_device_data *hw_data;
char name[ADF_DEVICE_NAME_LENGTH];
unsigned int i, bar_nr;
- int ret;
+ int ret, bar_mask;
switch (ent->device) {
case ADF_DH895XCC_PCI_DEVICE_ID:
@@ -229,10 +232,12 @@ static int adf_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
return -ENOMEM;
INIT_LIST_HEAD(&accel_dev->crypto_list);
+ accel_pci_dev = &accel_dev->accel_pci_dev;
+ accel_pci_dev->pci_dev = pdev;
/* Add accel device to accel table.
* This should be called before adf_cleanup_accel is called */
- if (adf_devmgr_add_dev(accel_dev)) {
+ if (adf_devmgr_add_dev(accel_dev, NULL)) {
dev_err(&pdev->dev, "Failed to add new accelerator device.\n");
kfree(accel_dev);
return -EFAULT;
@@ -255,7 +260,6 @@ static int adf_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
default:
return -ENODEV;
}
- accel_pci_dev = &accel_dev->accel_pci_dev;
pci_read_config_byte(pdev, PCI_REVISION_ID, &accel_pci_dev->revid);
pci_read_config_dword(pdev, ADF_DH895XCC_FUSECTL_OFFSET,
&hw_data->fuses);
@@ -264,7 +268,6 @@ static int adf_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
hw_data->accel_mask = hw_data->get_accel_mask(hw_data->fuses);
hw_data->ae_mask = hw_data->get_ae_mask(hw_data->fuses);
accel_pci_dev->sku = hw_data->get_sku(hw_data);
- accel_pci_dev->pci_dev = pdev;
/* If the device has no acceleration engines then ignore it. */
if (!hw_data->accel_mask || !hw_data->ae_mask ||
((~hw_data->ae_mask) & 0x01)) {
@@ -274,11 +277,14 @@ static int adf_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
}
/* Create dev top level debugfs entry */
- snprintf(name, sizeof(name), "%s%s_dev%d", ADF_DEVICE_NAME_PREFIX,
- hw_data->dev_class->name, hw_data->instance_id);
+ snprintf(name, sizeof(name), "%s%s_%02x:%02d.%02d",
+ ADF_DEVICE_NAME_PREFIX, hw_data->dev_class->name,
+ pdev->bus->number, PCI_SLOT(pdev->devfn),
+ PCI_FUNC(pdev->devfn));
+
accel_dev->debugfs_dir = debugfs_create_dir(name, NULL);
if (!accel_dev->debugfs_dir) {
- dev_err(&pdev->dev, "Could not create debugfs dir\n");
+ dev_err(&pdev->dev, "Could not create debugfs dir %s\n", name);
ret = -EINVAL;
goto out_err;
}
@@ -301,7 +307,7 @@ static int adf_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
if ((pci_set_dma_mask(pdev, DMA_BIT_MASK(32)))) {
dev_err(&pdev->dev, "No usable DMA configuration\n");
ret = -EFAULT;
- goto out_err;
+ goto out_err_disable;
} else {
pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
}
@@ -312,7 +318,7 @@ static int adf_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
if (pci_request_regions(pdev, adf_driver_name)) {
ret = -EFAULT;
- goto out_err;
+ goto out_err_disable;
}
/* Read accelerator capabilities mask */
@@ -320,19 +326,21 @@ static int adf_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
&hw_data->accel_capabilities_mask);
/* Find and map all the device's BARS */
- for (i = 0; i < ADF_PCI_MAX_BARS; i++) {
- struct adf_bar *bar = &accel_pci_dev->pci_bars[i];
+ i = 0;
+ bar_mask = pci_select_bars(pdev, IORESOURCE_MEM);
+ for_each_set_bit(bar_nr, (const unsigned long *)&bar_mask,
+ ADF_PCI_MAX_BARS * 2) {
+ struct adf_bar *bar = &accel_pci_dev->pci_bars[i++];
- bar_nr = i * 2;
bar->base_addr = pci_resource_start(pdev, bar_nr);
if (!bar->base_addr)
break;
bar->size = pci_resource_len(pdev, bar_nr);
bar->virt_addr = pci_iomap(accel_pci_dev->pci_dev, bar_nr, 0);
if (!bar->virt_addr) {
- dev_err(&pdev->dev, "Failed to map BAR %d\n", i);
+ dev_err(&pdev->dev, "Failed to map BAR %d\n", bar_nr);
ret = -EFAULT;
- goto out_err;
+ goto out_err_free_reg;
}
}
pci_set_master(pdev);
@@ -340,32 +348,40 @@ static int adf_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
if (adf_enable_aer(accel_dev, &adf_driver)) {
dev_err(&pdev->dev, "Failed to enable aer\n");
ret = -EFAULT;
- goto out_err;
+ goto out_err_free_reg;
}
if (pci_save_state(pdev)) {
dev_err(&pdev->dev, "Failed to save pci state\n");
ret = -ENOMEM;
- goto out_err;
+ goto out_err_free_reg;
}
ret = adf_dev_configure(accel_dev);
if (ret)
- goto out_err;
+ goto out_err_free_reg;
ret = adf_dev_init(accel_dev);
if (ret)
- goto out_err;
+ goto out_err_dev_shutdown;
ret = adf_dev_start(accel_dev);
- if (ret) {
- adf_dev_stop(accel_dev);
- goto out_err;
- }
+ if (ret)
+ goto out_err_dev_stop;
- return 0;
+ return ret;
+
+out_err_dev_stop:
+ adf_dev_stop(accel_dev);
+out_err_dev_shutdown:
+ adf_dev_shutdown(accel_dev);
+out_err_free_reg:
+ pci_release_regions(accel_pci_dev->pci_dev);
+out_err_disable:
+ pci_disable_device(accel_pci_dev->pci_dev);
out_err:
adf_cleanup_accel(accel_dev);
+ kfree(accel_dev);
return ret;
}
@@ -379,8 +395,12 @@ static void adf_remove(struct pci_dev *pdev)
}
if (adf_dev_stop(accel_dev))
dev_err(&GET_DEV(accel_dev), "Failed to stop QAT accel dev\n");
+
+ adf_dev_shutdown(accel_dev);
adf_disable_aer(accel_dev);
adf_cleanup_accel(accel_dev);
+ adf_cleanup_pci_dev(accel_dev);
+ kfree(accel_dev);
}
static int __init adfdrv_init(void)
diff --git a/drivers/crypto/qat/qat_dh895xcc/adf_isr.c b/drivers/crypto/qat/qat_dh895xcc/adf_isr.c
index 0d03c10..5570f78 100644
--- a/drivers/crypto/qat/qat_dh895xcc/adf_isr.c
+++ b/drivers/crypto/qat/qat_dh895xcc/adf_isr.c
@@ -59,21 +59,30 @@
#include <adf_transport_access_macros.h>
#include <adf_transport_internal.h>
#include "adf_drv.h"
+#include "adf_dh895xcc_hw_data.h"
static int adf_enable_msix(struct adf_accel_dev *accel_dev)
{
struct adf_accel_pci *pci_dev_info = &accel_dev->accel_pci_dev;
struct adf_hw_device_data *hw_data = accel_dev->hw_device;
- uint32_t msix_num_entries = hw_data->num_banks + 1;
- int i;
-
- for (i = 0; i < msix_num_entries; i++)
- pci_dev_info->msix_entries.entries[i].entry = i;
+ u32 msix_num_entries = 1;
+
+ /* If SR-IOV is disabled, add entries for each bank */
+ if (!accel_dev->pf.vf_info) {
+ int i;
+
+ msix_num_entries += hw_data->num_banks;
+ for (i = 0; i < msix_num_entries; i++)
+ pci_dev_info->msix_entries.entries[i].entry = i;
+ } else {
+ pci_dev_info->msix_entries.entries[0].entry =
+ hw_data->num_banks;
+ }
if (pci_enable_msix_exact(pci_dev_info->pci_dev,
pci_dev_info->msix_entries.entries,
msix_num_entries)) {
- dev_err(&GET_DEV(accel_dev), "Failed to enable MSIX IRQ\n");
+ dev_err(&GET_DEV(accel_dev), "Failed to enable MSI-X IRQ(s)\n");
return -EFAULT;
}
return 0;
@@ -97,9 +106,58 @@ static irqreturn_t adf_msix_isr_ae(int irq, void *dev_ptr)
{
struct adf_accel_dev *accel_dev = dev_ptr;
- dev_info(&GET_DEV(accel_dev), "qat_dev%d spurious AE interrupt\n",
- accel_dev->accel_id);
- return IRQ_HANDLED;
+#ifdef CONFIG_PCI_IOV
+ /* If SR-IOV is enabled (vf_info is non-NULL), check for VF->PF ints */
+ if (accel_dev->pf.vf_info) {
+ void __iomem *pmisc_bar_addr =
+ (&GET_BARS(accel_dev)[ADF_DH895XCC_PMISC_BAR])->virt_addr;
+ u32 vf_mask;
+
+ /* Get the interrupt sources triggered by VFs */
+ vf_mask = ((ADF_CSR_RD(pmisc_bar_addr, ADF_DH895XCC_ERRSOU5) &
+ 0x0000FFFF) << 16) |
+ ((ADF_CSR_RD(pmisc_bar_addr, ADF_DH895XCC_ERRSOU3) &
+ 0x01FFFE00) >> 9);
+
+ if (vf_mask) {
+ struct adf_accel_vf_info *vf_info;
+ bool irq_handled = false;
+ int i;
+
+ /* Disable VF2PF interrupts for VFs with pending ints */
+ adf_disable_vf2pf_interrupts(accel_dev, vf_mask);
+
+ /*
+ * Schedule tasklets to handle VF2PF interrupt BHs
+ * unless the VF is malicious and is attempting to
+ * flood the host OS with VF2PF interrupts.
+ */
+ for_each_set_bit(i, (const unsigned long *)&vf_mask,
+ (sizeof(vf_mask) * BITS_PER_BYTE)) {
+ vf_info = accel_dev->pf.vf_info + i;
+
+ if (!__ratelimit(&vf_info->vf2pf_ratelimit)) {
+ dev_info(&GET_DEV(accel_dev),
+ "Too many ints from VF%d\n",
+ vf_info->vf_nr + 1);
+ continue;
+ }
+
+ /* Tasklet will re-enable ints from this VF */
+ tasklet_hi_schedule(&vf_info->vf2pf_bh_tasklet);
+ irq_handled = true;
+ }
+
+ if (irq_handled)
+ return IRQ_HANDLED;
+ }
+ }
+#endif /* CONFIG_PCI_IOV */
+
+ dev_dbg(&GET_DEV(accel_dev), "qat_dev%d spurious AE interrupt\n",
+ accel_dev->accel_id);
+
+ return IRQ_NONE;
}
static int adf_request_irqs(struct adf_accel_dev *accel_dev)
@@ -108,28 +166,32 @@ static int adf_request_irqs(struct adf_accel_dev *accel_dev)
struct adf_hw_device_data *hw_data = accel_dev->hw_device;
struct msix_entry *msixe = pci_dev_info->msix_entries.entries;
struct adf_etr_data *etr_data = accel_dev->transport;
- int ret, i;
+ int ret, i = 0;
char *name;
- /* Request msix irq for all banks */
- for (i = 0; i < hw_data->num_banks; i++) {
- struct adf_etr_bank_data *bank = &etr_data->banks[i];
- unsigned int cpu, cpus = num_online_cpus();
-
- name = *(pci_dev_info->msix_entries.names + i);
- snprintf(name, ADF_MAX_MSIX_VECTOR_NAME,
- "qat%d-bundle%d", accel_dev->accel_id, i);
- ret = request_irq(msixe[i].vector,
- adf_msix_isr_bundle, 0, name, bank);
- if (ret) {
- dev_err(&GET_DEV(accel_dev),
- "failed to enable irq %d for %s\n",
- msixe[i].vector, name);
- return ret;
+ /* Request msix irq for all banks unless SR-IOV enabled */
+ if (!accel_dev->pf.vf_info) {
+ for (i = 0; i < hw_data->num_banks; i++) {
+ struct adf_etr_bank_data *bank = &etr_data->banks[i];
+ unsigned int cpu, cpus = num_online_cpus();
+
+ name = *(pci_dev_info->msix_entries.names + i);
+ snprintf(name, ADF_MAX_MSIX_VECTOR_NAME,
+ "qat%d-bundle%d", accel_dev->accel_id, i);
+ ret = request_irq(msixe[i].vector,
+ adf_msix_isr_bundle, 0, name, bank);
+ if (ret) {
+ dev_err(&GET_DEV(accel_dev),
+ "failed to enable irq %d for %s\n",
+ msixe[i].vector, name);
+ return ret;
+ }
+
+ cpu = ((accel_dev->accel_id * hw_data->num_banks) +
+ i) % cpus;
+ irq_set_affinity_hint(msixe[i].vector,
+ get_cpu_mask(cpu));
}
-
- cpu = ((accel_dev->accel_id * hw_data->num_banks) + i) % cpus;
- irq_set_affinity_hint(msixe[i].vector, get_cpu_mask(cpu));
}
/* Request msix irq for AE */
@@ -152,11 +214,13 @@ static void adf_free_irqs(struct adf_accel_dev *accel_dev)
struct adf_hw_device_data *hw_data = accel_dev->hw_device;
struct msix_entry *msixe = pci_dev_info->msix_entries.entries;
struct adf_etr_data *etr_data = accel_dev->transport;
- int i;
+ int i = 0;
- for (i = 0; i < hw_data->num_banks; i++) {
- irq_set_affinity_hint(msixe[i].vector, NULL);
- free_irq(msixe[i].vector, &etr_data->banks[i]);
+ if (pci_dev_info->msix_entries.num_entries > 1) {
+ for (i = 0; i < hw_data->num_banks; i++) {
+ irq_set_affinity_hint(msixe[i].vector, NULL);
+ free_irq(msixe[i].vector, &etr_data->banks[i]);
+ }
}
irq_set_affinity_hint(msixe[i].vector, NULL);
free_irq(msixe[i].vector, accel_dev);
@@ -168,7 +232,11 @@ static int adf_isr_alloc_msix_entry_table(struct adf_accel_dev *accel_dev)
char **names;
struct msix_entry *entries;
struct adf_hw_device_data *hw_data = accel_dev->hw_device;
- uint32_t msix_num_entries = hw_data->num_banks + 1;
+ u32 msix_num_entries = 1;
+
+ /* If SR-IOV is disabled (vf_info is NULL), add entries for each bank */
+ if (!accel_dev->pf.vf_info)
+ msix_num_entries += hw_data->num_banks;
entries = kzalloc_node(msix_num_entries * sizeof(*entries),
GFP_KERNEL, dev_to_node(&GET_DEV(accel_dev)));
@@ -185,6 +253,7 @@ static int adf_isr_alloc_msix_entry_table(struct adf_accel_dev *accel_dev)
if (!(*(names + i)))
goto err;
}
+ accel_dev->accel_pci_dev.msix_entries.num_entries = msix_num_entries;
accel_dev->accel_pci_dev.msix_entries.entries = entries;
accel_dev->accel_pci_dev.msix_entries.names = names;
return 0;
@@ -198,13 +267,11 @@ err:
static void adf_isr_free_msix_entry_table(struct adf_accel_dev *accel_dev)
{
- struct adf_hw_device_data *hw_data = accel_dev->hw_device;
- uint32_t msix_num_entries = hw_data->num_banks + 1;
char **names = accel_dev->accel_pci_dev.msix_entries.names;
int i;
kfree(accel_dev->accel_pci_dev.msix_entries.entries);
- for (i = 0; i < msix_num_entries; i++)
+ for (i = 0; i < accel_dev->accel_pci_dev.msix_entries.num_entries; i++)
kfree(*(names + i));
kfree(names);
}
--
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