diff options
Diffstat (limited to 'drivers/crypto/intel/qat/qat_common/adf_heartbeat.c')
| -rw-r--r-- | drivers/crypto/intel/qat/qat_common/adf_heartbeat.c | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/drivers/crypto/intel/qat/qat_common/adf_heartbeat.c b/drivers/crypto/intel/qat/qat_common/adf_heartbeat.c index 7358aac8e56d..beef9a5f6c75 100644 --- a/drivers/crypto/intel/qat/qat_common/adf_heartbeat.c +++ b/drivers/crypto/intel/qat/qat_common/adf_heartbeat.c @@ -20,6 +20,8 @@ #include "adf_transport_internal.h" #include "icp_qat_fw_init_admin.h" +#define ADF_HB_EMPTY_SIG 0xA5A5A5A5 + /* Heartbeat counter pair */ struct hb_cnt_pair { __u16 resp_heartbeat_cnt; @@ -42,6 +44,57 @@ static int adf_hb_check_polling_freq(struct adf_accel_dev *accel_dev) return 0; } +/** + * validate_hb_ctrs_cnt() - checks if the number of heartbeat counters should + * be updated by one to support the currently loaded firmware. + * @accel_dev: Pointer to acceleration device. + * + * Return: + * * true - hb_ctrs must increased by ADF_NUM_PKE_STRAND + * * false - no changes needed + */ +static bool validate_hb_ctrs_cnt(struct adf_accel_dev *accel_dev) +{ + const size_t hb_ctrs = accel_dev->hw_device->num_hb_ctrs; + const size_t max_aes = accel_dev->hw_device->num_engines; + const size_t hb_struct_size = sizeof(struct hb_cnt_pair); + const size_t exp_diff_size = array3_size(ADF_NUM_PKE_STRAND, max_aes, + hb_struct_size); + const size_t dev_ctrs = size_mul(max_aes, hb_ctrs); + const size_t stats_size = size_mul(dev_ctrs, hb_struct_size); + const u32 exp_diff_cnt = exp_diff_size / sizeof(u32); + const u32 stats_el_cnt = stats_size / sizeof(u32); + struct hb_cnt_pair *hb_stats = accel_dev->heartbeat->dma.virt_addr; + const u32 *mem_to_chk = (u32 *)(hb_stats + dev_ctrs); + u32 el_diff_cnt = 0; + int i; + + /* count how many bytes are different from pattern */ + for (i = 0; i < stats_el_cnt; i++) { + if (mem_to_chk[i] == ADF_HB_EMPTY_SIG) + break; + + el_diff_cnt++; + } + + return el_diff_cnt && el_diff_cnt == exp_diff_cnt; +} + +void adf_heartbeat_check_ctrs(struct adf_accel_dev *accel_dev) +{ + struct hb_cnt_pair *hb_stats = accel_dev->heartbeat->dma.virt_addr; + const size_t hb_ctrs = accel_dev->hw_device->num_hb_ctrs; + const size_t max_aes = accel_dev->hw_device->num_engines; + const size_t dev_ctrs = size_mul(max_aes, hb_ctrs); + const size_t stats_size = size_mul(dev_ctrs, sizeof(struct hb_cnt_pair)); + const size_t mem_items_to_fill = size_mul(stats_size, 2) / sizeof(u32); + + /* fill hb stats memory with pattern */ + memset32((uint32_t *)hb_stats, ADF_HB_EMPTY_SIG, mem_items_to_fill); + accel_dev->heartbeat->ctrs_cnt_checked = false; +} +EXPORT_SYMBOL_GPL(adf_heartbeat_check_ctrs); + static int get_timer_ticks(struct adf_accel_dev *accel_dev, unsigned int *value) { char timer_str[ADF_CFG_MAX_VAL_LEN_IN_BYTES] = { }; @@ -123,6 +176,13 @@ static int adf_hb_get_status(struct adf_accel_dev *accel_dev) size_t ae = 0; int ret = 0; + if (!accel_dev->heartbeat->ctrs_cnt_checked) { + if (validate_hb_ctrs_cnt(accel_dev)) + hw_device->num_hb_ctrs += ADF_NUM_PKE_STRAND; + + accel_dev->heartbeat->ctrs_cnt_checked = true; + } + live_stats = accel_dev->heartbeat->dma.virt_addr; last_stats = live_stats + dev_ctrs; count_fails = (u16 *)(last_stats + dev_ctrs); @@ -221,6 +281,11 @@ int adf_heartbeat_init(struct adf_accel_dev *accel_dev) if (!hb->dma.virt_addr) goto err_free; + /* + * Default set this flag as true to avoid unnecessary checks, + * it will be reset on platforms that need such a check + */ + hb->ctrs_cnt_checked = true; accel_dev->heartbeat = hb; return 0; @@ -241,6 +306,9 @@ int adf_heartbeat_start(struct adf_accel_dev *accel_dev) return -EFAULT; } + if (accel_dev->hw_device->check_hb_ctrs) + accel_dev->hw_device->check_hb_ctrs(accel_dev); + ret = get_timer_ticks(accel_dev, &timer_ticks); if (ret) return ret; |