FEX-Emu/linux
1
0
Fork 0
mirror of https://github.com/FEX-Emu/linux.git synced 2024-12-23 18:07:03 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

crypto: qat - Add support for SRIOV

Browse Source 
Add code that enables SRIOV on dh895xcc devices.

Signed-off-by: Tadeusz Struk <tadeusz.struk@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Tadeusz Struk 2015-08-07 11:34:25 -07:00 committed by Herbert Xu
parent a57331394c
commit ed8ccaef52
17 changed files with 1425 additions and 93 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/crypto/qat/qat_common/Makefile
View File

@ -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

37
drivers/crypto/qat/qat_common/adf_accel_devices.h
View File

@ -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

3
drivers/crypto/qat/qat_common/adf_aer.c
View File

@ -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");

3
drivers/crypto/qat/qat_common/adf_cfg.c
View File

@ -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);

3
drivers/crypto/qat/qat_common/adf_cfg_common.h
View File

@ -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 {

37
drivers/crypto/qat/qat_common/adf_common_drv.h
View File

@ -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

6
drivers/crypto/qat/qat_common/adf_ctl_drv.c
View File

@ -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);
}

285
drivers/crypto/qat/qat_common/adf_dev_mgr.c
View File

@ -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;
}
void adf_devmgr_get_num_dev(uint32_t *num)
static int adf_get_num_dettached_vfs(void)
{
*num = num_devices;
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 - 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);

10
drivers/crypto/qat/qat_common/adf_init.c
View File

@ -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);

336
drivers/crypto/qat/qat_common/adf_pf2vf_msg.c Normal file
View File

@ -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@intel.com
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);

144
drivers/crypto/qat/qat_common/adf_pf2vf_msg.h Normal file
View File

@ -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@intel.com
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 */

406
drivers/crypto/qat/qat_common/adf_sriov.c Normal file
View File

@ -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@intel.com
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);

4
drivers/crypto/qat/qat_common/qat_crypto.c
View File

@ -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;
}

24
drivers/crypto/qat/qat_dh895xcc/adf_dh895xcc_hw_data.c
View File

@ -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)

4
drivers/crypto/qat/qat_dh895xcc/adf_dh895xcc_hw_data.h
View File

@ -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"

80
drivers/crypto/qat/qat_dh895xcc/adf_drv.c
View File

@ -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)

135
drivers/crypto/qat/qat_dh895xcc/adf_isr.c
View File

@ -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;
u32 msix_num_entries = 1;
for (i = 0; i < msix_num_entries; i++)
pci_dev_info->msix_entries.entries[i].entry = i;
/* 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();
/* 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;
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);
}