diff options
| -rw-r--r-- | drivers/crypto/intel/qat/qat_4xxx/adf_4xxx_hw_data.c | 20 | ||||
| -rw-r--r-- | drivers/crypto/intel/qat/qat_4xxx/adf_4xxx_hw_data.h | 13 | ||||
| -rw-r--r-- | drivers/crypto/intel/qat/qat_common/Makefile | 2 | ||||
| -rw-r--r-- | drivers/crypto/intel/qat/qat_common/adf_accel_devices.h | 3 | ||||
| -rw-r--r-- | drivers/crypto/intel/qat/qat_common/adf_admin.c | 47 | ||||
| -rw-r--r-- | drivers/crypto/intel/qat/qat_common/adf_admin.h | 8 | ||||
| -rw-r--r-- | drivers/crypto/intel/qat/qat_common/adf_gen4_hw_data.h | 7 | ||||
| -rw-r--r-- | drivers/crypto/intel/qat/qat_common/adf_init.c | 10 | ||||
| -rw-r--r-- | drivers/crypto/intel/qat/qat_common/adf_rl.c | 1159 | ||||
| -rw-r--r-- | drivers/crypto/intel/qat/qat_common/adf_rl.h | 169 | ||||
| -rw-r--r-- | drivers/crypto/intel/qat/qat_common/adf_rl_admin.c | 97 | ||||
| -rw-r--r-- | drivers/crypto/intel/qat/qat_common/adf_rl_admin.h | 18 | ||||
| -rw-r--r-- | drivers/crypto/intel/qat/qat_common/icp_qat_fw_init_admin.h | 38 |
13 files changed, 1590 insertions, 1 deletions
diff --git a/drivers/crypto/intel/qat/qat_4xxx/adf_4xxx_hw_data.c b/drivers/crypto/intel/qat/qat_4xxx/adf_4xxx_hw_data.c index ea47a05e12ed..2bba58a2c76f 100644 --- a/drivers/crypto/intel/qat/qat_4xxx/adf_4xxx_hw_data.c +++ b/drivers/crypto/intel/qat/qat_4xxx/adf_4xxx_hw_data.c @@ -343,6 +343,24 @@ static u32 get_heartbeat_clock(struct adf_hw_device_data *self) return ADF_4XXX_KPT_COUNTER_FREQ; } +static void adf_init_rl_data(struct adf_rl_hw_data *rl_data) +{ + rl_data->pciout_tb_offset = ADF_GEN4_RL_TOKEN_PCIEOUT_BUCKET_OFFSET; + rl_data->pciin_tb_offset = ADF_GEN4_RL_TOKEN_PCIEIN_BUCKET_OFFSET; + rl_data->r2l_offset = ADF_GEN4_RL_R2L_OFFSET; + rl_data->l2c_offset = ADF_GEN4_RL_L2C_OFFSET; + rl_data->c2s_offset = ADF_GEN4_RL_C2S_OFFSET; + + rl_data->pcie_scale_div = ADF_4XXX_RL_PCIE_SCALE_FACTOR_DIV; + rl_data->pcie_scale_mul = ADF_4XXX_RL_PCIE_SCALE_FACTOR_MUL; + rl_data->dcpr_correction = ADF_4XXX_RL_DCPR_CORRECTION; + rl_data->max_tp[ADF_SVC_ASYM] = ADF_4XXX_RL_MAX_TP_ASYM; + rl_data->max_tp[ADF_SVC_SYM] = ADF_4XXX_RL_MAX_TP_SYM; + rl_data->max_tp[ADF_SVC_DC] = ADF_4XXX_RL_MAX_TP_DC; + rl_data->scan_interval = ADF_4XXX_RL_SCANS_PER_SEC; + rl_data->scale_ref = ADF_4XXX_RL_SLICE_REF; +} + static void adf_enable_error_correction(struct adf_accel_dev *accel_dev) { struct adf_bar *misc_bar = &GET_BARS(accel_dev)[ADF_4XXX_PMISC_BAR]; @@ -594,12 +612,14 @@ void adf_init_hw_data_4xxx(struct adf_hw_device_data *hw_data, u32 dev_id) hw_data->stop_timer = adf_gen4_timer_stop; hw_data->get_hb_clock = get_heartbeat_clock; hw_data->num_hb_ctrs = ADF_NUM_HB_CNT_PER_AE; + hw_data->clock_frequency = ADF_4XXX_AE_FREQ; adf_gen4_set_err_mask(&hw_data->dev_err_mask); adf_gen4_init_hw_csr_ops(&hw_data->csr_ops); adf_gen4_init_pf_pfvf_ops(&hw_data->pfvf_ops); adf_gen4_init_dc_ops(&hw_data->dc_ops); adf_gen4_init_ras_ops(&hw_data->ras_ops); + adf_init_rl_data(&hw_data->rl_data); } void adf_clean_hw_data_4xxx(struct adf_hw_device_data *hw_data) diff --git a/drivers/crypto/intel/qat/qat_4xxx/adf_4xxx_hw_data.h b/drivers/crypto/intel/qat/qat_4xxx/adf_4xxx_hw_data.h index efd5dadc19ed..33423295e90f 100644 --- a/drivers/crypto/intel/qat/qat_4xxx/adf_4xxx_hw_data.h +++ b/drivers/crypto/intel/qat/qat_4xxx/adf_4xxx_hw_data.h @@ -82,8 +82,19 @@ #define ADF_402XX_ASYM_OBJ "qat_402xx_asym.bin" #define ADF_402XX_ADMIN_OBJ "qat_402xx_admin.bin" +/* RL constants */ +#define ADF_4XXX_RL_PCIE_SCALE_FACTOR_DIV 100 +#define ADF_4XXX_RL_PCIE_SCALE_FACTOR_MUL 102 +#define ADF_4XXX_RL_DCPR_CORRECTION 1 +#define ADF_4XXX_RL_SCANS_PER_SEC 954 +#define ADF_4XXX_RL_MAX_TP_ASYM 173750UL +#define ADF_4XXX_RL_MAX_TP_SYM 95000UL +#define ADF_4XXX_RL_MAX_TP_DC 45000UL +#define ADF_4XXX_RL_SLICE_REF 1000UL + /* Clocks frequency */ -#define ADF_4XXX_KPT_COUNTER_FREQ (100 * HZ_PER_MHZ) +#define ADF_4XXX_KPT_COUNTER_FREQ (100 * HZ_PER_MHZ) +#define ADF_4XXX_AE_FREQ (1000 * HZ_PER_MHZ) /* qat_4xxx fuse bits are different from old GENs, redefine them */ enum icp_qat_4xxx_slice_mask { diff --git a/drivers/crypto/intel/qat/qat_common/Makefile b/drivers/crypto/intel/qat/qat_common/Makefile index 58f3c181b2ce..408b3959da1d 100644 --- a/drivers/crypto/intel/qat/qat_common/Makefile +++ b/drivers/crypto/intel/qat/qat_common/Makefile @@ -28,6 +28,8 @@ intel_qat-objs := adf_cfg.o \ qat_algs.o \ qat_asym_algs.o \ qat_algs_send.o \ + adf_rl.o \ + adf_rl_admin.o \ qat_uclo.o \ qat_hal.o \ qat_bl.o diff --git a/drivers/crypto/intel/qat/qat_common/adf_accel_devices.h b/drivers/crypto/intel/qat/qat_common/adf_accel_devices.h index 908959288ce5..30c2b15ff801 100644 --- a/drivers/crypto/intel/qat/qat_common/adf_accel_devices.h +++ b/drivers/crypto/intel/qat/qat_common/adf_accel_devices.h @@ -9,6 +9,7 @@ #include <linux/ratelimit.h> #include <linux/types.h> #include "adf_cfg_common.h" +#include "adf_rl.h" #include "adf_pfvf_msg.h" #define ADF_DH895XCC_DEVICE_NAME "dh895xcc" @@ -247,6 +248,7 @@ struct adf_hw_device_data { struct adf_dc_ops dc_ops; struct adf_ras_ops ras_ops; struct adf_dev_err_mask dev_err_mask; + struct adf_rl_hw_data rl_data; const char *fw_name; const char *fw_mmp_name; u32 fuses; @@ -358,6 +360,7 @@ struct adf_accel_dev { struct adf_accel_pci accel_pci_dev; struct adf_timer *timer; struct adf_heartbeat *heartbeat; + struct adf_rl *rate_limiting; union { struct { /* protects VF2PF interrupts access */ diff --git a/drivers/crypto/intel/qat/qat_common/adf_admin.c b/drivers/crypto/intel/qat/qat_common/adf_admin.c index 50e054ba2c33..54b673ec2362 100644 --- a/drivers/crypto/intel/qat/qat_common/adf_admin.c +++ b/drivers/crypto/intel/qat/qat_common/adf_admin.c @@ -330,6 +330,53 @@ static int adf_get_fw_capabilities(struct adf_accel_dev *accel_dev, u16 *caps) return 0; } +int adf_send_admin_rl_init(struct adf_accel_dev *accel_dev, + struct icp_qat_fw_init_admin_slice_cnt *slices) +{ + u32 ae_mask = accel_dev->hw_device->admin_ae_mask; + struct icp_qat_fw_init_admin_resp resp = { }; + struct icp_qat_fw_init_admin_req req = { }; + int ret; + + req.cmd_id = ICP_QAT_FW_RL_INIT; + + ret = adf_send_admin(accel_dev, &req, &resp, ae_mask); + if (ret) + return ret; + + memcpy(slices, &resp.slices, sizeof(*slices)); + + return 0; +} + +int adf_send_admin_rl_add_update(struct adf_accel_dev *accel_dev, + struct icp_qat_fw_init_admin_req *req) +{ + u32 ae_mask = accel_dev->hw_device->admin_ae_mask; + struct icp_qat_fw_init_admin_resp resp = { }; + + /* + * req struct filled in rl implementation. Used commands + * ICP_QAT_FW_RL_ADD for a new SLA + * ICP_QAT_FW_RL_UPDATE for update SLA + */ + return adf_send_admin(accel_dev, req, &resp, ae_mask); +} + +int adf_send_admin_rl_delete(struct adf_accel_dev *accel_dev, u16 node_id, + u8 node_type) +{ + u32 ae_mask = accel_dev->hw_device->admin_ae_mask; + struct icp_qat_fw_init_admin_resp resp = { }; + struct icp_qat_fw_init_admin_req req = { }; + + req.cmd_id = ICP_QAT_FW_RL_REMOVE; + req.node_id = node_id; + req.node_type = node_type; + + return adf_send_admin(accel_dev, &req, &resp, ae_mask); +} + /** * adf_send_admin_init() - Function sends init message to FW * @accel_dev: Pointer to acceleration device. diff --git a/drivers/crypto/intel/qat/qat_common/adf_admin.h b/drivers/crypto/intel/qat/qat_common/adf_admin.h index 03507ec3a51d..55cbcbc66c9f 100644 --- a/drivers/crypto/intel/qat/qat_common/adf_admin.h +++ b/drivers/crypto/intel/qat/qat_common/adf_admin.h @@ -3,6 +3,8 @@ #ifndef ADF_ADMIN #define ADF_ADMIN +#include "icp_qat_fw_init_admin.h" + struct adf_accel_dev; int adf_init_admin_comms(struct adf_accel_dev *accel_dev); @@ -12,6 +14,12 @@ int adf_get_ae_fw_counters(struct adf_accel_dev *accel_dev, u16 ae, u64 *reqs, u int adf_init_admin_pm(struct adf_accel_dev *accel_dev, u32 idle_delay); int adf_send_admin_tim_sync(struct adf_accel_dev *accel_dev, u32 cnt); int adf_send_admin_hb_timer(struct adf_accel_dev *accel_dev, uint32_t ticks); +int adf_send_admin_rl_init(struct adf_accel_dev *accel_dev, + struct icp_qat_fw_init_admin_slice_cnt *slices); +int adf_send_admin_rl_add_update(struct adf_accel_dev *accel_dev, + struct icp_qat_fw_init_admin_req *req); +int adf_send_admin_rl_delete(struct adf_accel_dev *accel_dev, u16 node_id, + u8 node_type); int adf_get_fw_timestamp(struct adf_accel_dev *accel_dev, u64 *timestamp); int adf_get_pm_info(struct adf_accel_dev *accel_dev, dma_addr_t p_state_addr, size_t buff_size); int adf_get_cnv_stats(struct adf_accel_dev *accel_dev, u16 ae, u16 *err_cnt, u16 *latest_err); diff --git a/drivers/crypto/intel/qat/qat_common/adf_gen4_hw_data.h b/drivers/crypto/intel/qat/qat_common/adf_gen4_hw_data.h index 02d7a019ebf8..1813fe1d5a06 100644 --- a/drivers/crypto/intel/qat/qat_common/adf_gen4_hw_data.h +++ b/drivers/crypto/intel/qat/qat_common/adf_gen4_hw_data.h @@ -139,6 +139,13 @@ do { \ /* Number of heartbeat counter pairs */ #define ADF_NUM_HB_CNT_PER_AE ADF_NUM_THREADS_PER_AE +/* Rate Limiting */ +#define ADF_GEN4_RL_R2L_OFFSET 0x508000 +#define ADF_GEN4_RL_L2C_OFFSET 0x509000 +#define ADF_GEN4_RL_C2S_OFFSET 0x508818 +#define ADF_GEN4_RL_TOKEN_PCIEIN_BUCKET_OFFSET 0x508800 +#define ADF_GEN4_RL_TOKEN_PCIEOUT_BUCKET_OFFSET 0x508804 + void adf_gen4_set_ssm_wdtimer(struct adf_accel_dev *accel_dev); void adf_gen4_init_hw_csr_ops(struct adf_hw_csr_ops *csr_ops); int adf_gen4_ring_pair_reset(struct adf_accel_dev *accel_dev, u32 bank_number); diff --git a/drivers/crypto/intel/qat/qat_common/adf_init.c b/drivers/crypto/intel/qat/qat_common/adf_init.c index ef51c4d028d2..81c39f3d07e1 100644 --- a/drivers/crypto/intel/qat/qat_common/adf_init.c +++ b/drivers/crypto/intel/qat/qat_common/adf_init.c @@ -9,6 +9,7 @@ #include "adf_common_drv.h" #include "adf_dbgfs.h" #include "adf_heartbeat.h" +#include "adf_rl.h" #include "adf_sysfs_ras_counters.h" static LIST_HEAD(service_table); @@ -137,6 +138,9 @@ static int adf_dev_init(struct adf_accel_dev *accel_dev) } adf_heartbeat_init(accel_dev); + ret = adf_rl_init(accel_dev); + if (ret && ret != -EOPNOTSUPP) + return ret; /* * Subservice initialisation is divided into two stages: init and start. @@ -212,6 +216,9 @@ static int adf_dev_start(struct adf_accel_dev *accel_dev) } adf_heartbeat_start(accel_dev); + ret = adf_rl_start(accel_dev); + if (ret && ret != -EOPNOTSUPP) + return ret; list_for_each_entry(service, &service_table, list) { if (service->event_hld(accel_dev, ADF_EVENT_START)) { @@ -272,6 +279,7 @@ static void adf_dev_stop(struct adf_accel_dev *accel_dev) !test_bit(ADF_STATUS_STARTING, &accel_dev->status)) return; + adf_rl_stop(accel_dev); adf_dbgfs_rm(accel_dev); adf_sysfs_stop_ras(accel_dev); @@ -359,6 +367,8 @@ static void adf_dev_shutdown(struct adf_accel_dev *accel_dev) clear_bit(accel_dev->accel_id, service->init_status); } + adf_rl_exit(accel_dev); + if (hw_data->ras_ops.disable_ras_errors) hw_data->ras_ops.disable_ras_errors(accel_dev); diff --git a/drivers/crypto/intel/qat/qat_common/adf_rl.c b/drivers/crypto/intel/qat/qat_common/adf_rl.c new file mode 100644 index 000000000000..88a03105b52a --- /dev/null +++ b/drivers/crypto/intel/qat/qat_common/adf_rl.c @@ -0,0 +1,1159 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* Copyright(c) 2023 Intel Corporation */ + +#define dev_fmt(fmt) "RateLimiting: " fmt + +#include <asm/errno.h> +#include <asm/div64.h> + +#include <linux/dev_printk.h> +#include <linux/kernel.h> +#include <linux/pci.h> +#include <linux/slab.h> +#include <linux/units.h> + +#include "adf_accel_devices.h" +#include "adf_common_drv.h" +#include "adf_rl_admin.h" +#include "adf_rl.h" + +#define RL_TOKEN_GRANULARITY_PCIEIN_BUCKET 0U +#define RL_TOKEN_GRANULARITY_PCIEOUT_BUCKET 0U +#define RL_TOKEN_PCIE_SIZE 64 +#define RL_TOKEN_ASYM_SIZE 1024 +#define RL_CSR_SIZE 4U +#define RL_CAPABILITY_MASK GENMASK(6, 4) +#define RL_CAPABILITY_VALUE 0x70 +#define RL_VALIDATE_NON_ZERO(input) ((input) == 0) +#define ROOT_MASK GENMASK(1, 0) +#define CLUSTER_MASK GENMASK(3, 0) +#define LEAF_MASK GENMASK(5, 0) + +static int validate_user_input(struct adf_accel_dev *accel_dev, + struct adf_rl_sla_input_data *sla_in, + bool is_update) +{ + const unsigned long rp_mask = sla_in->rp_mask; + size_t rp_mask_size; + int i, cnt; + + if (sla_in->pir < sla_in->cir) { + dev_notice(&GET_DEV(accel_dev), + "PIR must be >= CIR, setting PIR to CIR\n"); + sla_in->pir = sla_in->cir; + } + + if (!is_update) { + cnt = 0; + rp_mask_size = sizeof(sla_in->rp_mask) * BITS_PER_BYTE; + for_each_set_bit(i, &rp_mask, rp_mask_size) { + if (++cnt > RL_RP_CNT_PER_LEAF_MAX) { + dev_notice(&GET_DEV(accel_dev), + "Too many ring pairs selected for this SLA\n"); + return -EINVAL; + } + } + + if (sla_in->srv >= ADF_SVC_NONE) { + dev_notice(&GET_DEV(accel_dev), + "Wrong service type\n"); + return -EINVAL; + } + + if (sla_in->type > RL_LEAF) { + dev_notice(&GET_DEV(accel_dev), + "Wrong node type\n"); + return -EINVAL; + } + + if (sla_in->parent_id < RL_PARENT_DEFAULT_ID || + sla_in->parent_id >= RL_NODES_CNT_MAX) { + dev_notice(&GET_DEV(accel_dev), + "Wrong parent ID\n"); + return -EINVAL; + } + } + + return 0; +} + +static int validate_sla_id(struct adf_accel_dev *accel_dev, int sla_id) +{ + struct rl_sla *sla; + + if (sla_id <= RL_SLA_EMPTY_ID || sla_id >= RL_NODES_CNT_MAX) { + dev_notice(&GET_DEV(accel_dev), "Provided ID is out of bounds\n"); + return -EINVAL; + } + + sla = accel_dev->rate_limiting->sla[sla_id]; + + if (!sla) { + dev_notice(&GET_DEV(accel_dev), "SLA with provided ID does not exist\n"); + return -EINVAL; + } + + if (sla->type != RL_LEAF) { + dev_notice(&GET_DEV(accel_dev), "This ID is reserved for internal use\n"); + return -EINVAL; + } + + return 0; +} + +/** + * find_parent() - Find the parent for a new SLA + * @rl_data: pointer to ratelimiting data + * @sla_in: pointer to user input data for a new SLA + * + * Function returns a pointer to the parent SLA. If the parent ID is provided + * as input in the user data, then such ID is validated and the parent SLA + * is returned. + * Otherwise, it returns the default parent SLA (root or cluster) for + * the new object. + * + * Return: + * * Pointer to the parent SLA object + * * NULL - when parent cannot be found + */ +static struct rl_sla *find_parent(struct adf_rl *rl_data, + struct adf_rl_sla_input_data *sla_in) +{ + int input_parent_id = sla_in->parent_id; + struct rl_sla *root = NULL; + struct rl_sla *parent_sla; + int i; + + if (sla_in->type == RL_ROOT) + return NULL; + + if (input_parent_id > RL_PARENT_DEFAULT_ID) { + parent_sla = rl_data->sla[input_parent_id]; + /* + * SLA can be a parent if it has the same service as the child + * and its type is higher in the hierarchy, + * for example the parent type of a LEAF must be a CLUSTER. + */ + if (parent_sla && parent_sla->srv == sla_in->srv && + parent_sla->type == sla_in->type - 1) + return parent_sla; + + return NULL; + } + + /* If input_parent_id is not valid, get root for this service type. */ + for (i = 0; i < RL_ROOT_MAX; i++) { + if (rl_data->root[i] && rl_data->root[i]->srv == sla_in->srv) { + root = rl_data->root[i]; + break; + } + } + + if (!root) + return NULL; + + /* + * If the type of this SLA is cluster, then return the root. + * Otherwise, find the default (i.e. first) cluster for this service. + */ + if (sla_in->type == RL_CLUSTER) + return root; + + for (i = 0; i < RL_CLUSTER_MAX; i++) { + if (rl_data->cluster[i] && rl_data->cluster[i]->parent == root) + return rl_data->cluster[i]; + } + + return NULL; +} + +static enum adf_cfg_service_type srv_to_cfg_svc_type(enum adf_base_services rl_srv) +{ + switch (rl_srv) { + case ADF_SVC_ASYM: + return ASYM; + case ADF_SVC_SYM: + return SYM; + case ADF_SVC_DC: + return COMP; + default: + return UNUSED; + } +} + +/** + * get_sla_arr_of_type() - Returns a pointer to SLA type specific array + * @rl_data: pointer to ratelimiting data + * @type: SLA type + * @sla_arr: pointer to variable where requested pointer will be stored + * + * Return: Max number of elements allowed for the returned array + */ +static u32 get_sla_arr_of_type(struct adf_rl *rl_data, enum rl_node_type type, + struct rl_sla ***sla_arr) +{ + switch (type) { + case RL_LEAF: + *sla_arr = rl_data->leaf; + return RL_LEAF_MAX; + case RL_CLUSTER: + *sla_arr = rl_data->cluster; + return RL_CLUSTER_MAX; + case RL_ROOT: + *sla_arr = rl_data->root; + return RL_ROOT_MAX; + default: + *sla_arr = NULL; + return 0; + } +} + +static bool is_service_enabled(struct adf_accel_dev *accel_dev, + enum adf_base_services rl_srv) +{ + enum adf_cfg_service_type arb_srv = srv_to_cfg_svc_type(rl_srv); + struct adf_hw_device_data *hw_data = GET_HW_DATA(accel_dev); + u8 rps_per_bundle = hw_data->num_banks_per_vf; + int i; + + for (i = 0; i < rps_per_bundle; i++) { + if (GET_SRV_TYPE(accel_dev, i) == arb_srv) + return true; + } + + return false; +} + +/** + * prepare_rp_ids() - Creates an array of ring pair IDs from bitmask + * @accel_dev: pointer to acceleration device structure + * @sla: SLA object data where result will be written + * @rp_mask: bitmask of ring pair IDs + * + * Function tries to convert provided bitmap to an array of IDs. It checks if + * RPs aren't in use, are assigned to SLA service or if a number of provided + * IDs is not too big. If successful, writes the result into the field + * sla->ring_pairs_cnt. + * + * Return: + * * 0 - ok + * * -EINVAL - ring pairs array cannot be created from provided mask + */ +static int prepare_rp_ids(struct adf_accel_dev *accel_dev, struct rl_sla *sla, + const unsigned long rp_mask) +{ + enum adf_cfg_service_type arb_srv = srv_to_cfg_svc_type(sla->srv); + u16 rps_per_bundle = GET_HW_DATA(accel_dev)->num_banks_per_vf; + bool *rp_in_use = accel_dev->rate_limiting->rp_in_use; + size_t rp_cnt_max = ARRAY_SIZE(sla->ring_pairs_ids); + u16 rp_id_max = GET_HW_DATA(accel_dev)->num_banks; + u16 cnt = 0; + u16 rp_id; + + for_each_set_bit(rp_id, &rp_mask, rp_id_max) { + if (cnt >= rp_cnt_max) { + dev_notice(&GET_DEV(accel_dev), + "Assigned more ring pairs than supported"); + return -EINVAL; + } + + if (rp_in_use[rp_id]) { + dev_notice(&GET_DEV(accel_dev), + "RP %u already assigned to other SLA", rp_id); + return -EINVAL; + } + + if (GET_SRV_TYPE(accel_dev, rp_id % rps_per_bundle) != arb_srv) { + dev_notice(&GET_DEV(accel_dev), + "RP %u does not support SLA service", rp_id); + return -EINVAL; + } + + sla->ring_pairs_ids[cnt++] = rp_id; + } + + sla->ring_pairs_cnt = cnt; + + return 0; +} + +static void mark_rps_usage(struct rl_sla *sla, bool *rp_in_use, bool used) +{ + u16 rp_id; + int i; + + for (i = 0; i < sla->ring_pairs_cnt; i++) { + rp_id = sla->ring_pairs_ids[i]; + rp_in_use[rp_id] = used; + } +} + +static void assign_rps_to_leaf(struct adf_accel_dev *accel_dev, + struct rl_sla *sla, bool clear) +{ + struct adf_hw_device_data *hw_data = GET_HW_DATA(accel_dev); + void __iomem *pmisc_addr = adf_get_pmisc_base(accel_dev); + u32 base_offset = hw_data->rl_data.r2l_offset; + u32 node_id = clear ? 0U : (sla->node_id & LEAF_MASK); + u32 offset; + int i; + + for (i = 0; i < sla->ring_pairs_cnt; i++) { + offset = base_offset + (RL_CSR_SIZE * sla->ring_pairs_ids[i]); + ADF_CSR_WR(pmisc_addr, offset, node_id); + } +} + +static void assign_leaf_to_cluster(struct adf_accel_dev *accel_dev, + struct rl_sla *sla, bool clear) +{ + struct adf_hw_device_data *hw_data = GET_HW_DATA(accel_dev); + void __iomem *pmisc_addr = adf_get_pmisc_base(accel_dev); + u32 base_offset = hw_data->rl_data.l2c_offset; + u32 node_id = sla->node_id & LEAF_MASK; + u32 parent_id = clear ? 0U : (sla->parent->node_id & CLUSTER_MASK); + u32 offset; + + offset = base_offset + (RL_CSR_SIZE * node_id); + ADF_CSR_WR(pmisc_addr, offset, parent_id); +} + +static void assign_cluster_to_root(struct adf_accel_dev *accel_dev, + struct rl_sla *sla, bool clear) +{ + struct adf_hw_device_data *hw_data = GET_HW_DATA(accel_dev); + void __iomem *pmisc_addr = adf_get_pmisc_base(accel_dev); + u32 base_offset = hw_data->rl_data.c2s_offset; + u32 node_id = sla->node_id & CLUSTER_MASK; + u32 parent_id = clear ? 0U : (sla->parent->node_id & ROOT_MASK); + u32 offset; + + offset = base_offset + (RL_CSR_SIZE * node_id); + ADF_CSR_WR(pmisc_addr, offset, parent_id); +} + +static void assign_node_to_parent(struct adf_accel_dev *accel_dev, + struct rl_sla *sla, bool clear_assignment) +{ + switch (sla->type) { + case RL_LEAF: + assign_rps_to_leaf(accel_dev, sla, clear_assignment); + assign_leaf_to_cluster(accel_dev, sla, clear_assignment); + break; + case RL_CLUSTER: + assign_cluster_to_root(accel_dev, sla, clear_assignment); + break; + default: + break; + } +} + +/** + * can_parent_afford_sla() - Verifies if parent allows to create an SLA + * @sla_in: pointer to user input data for a new SLA + * @sla_parent: pointer to parent SLA object + * @sla_cir: current child CIR value (only for update) + * @is_update: request is a update + * + * Algorithm verifies if parent has enough remaining budget to take assignment + * of a child with provided parameters. In update case current CIR value must be + * returned to budget first. + * PIR value cannot exceed the PIR assigned to parent. + * + * Return: + * * true - SLA can be created + * * false - SLA cannot be created + */ +static bool can_parent_afford_sla(struct adf_rl_sla_input_data *sla_in, + struct rl_sla *sla_parent, u32 sla_cir, + bool is_update) +{ + u32 rem_cir = sla_parent->rem_cir; + + if (is_update) + rem_cir += sla_cir; + + if (sla_in->cir > rem_cir || sla_in->pir > sla_parent->pir) + return false; + + return true; +} + +/** + * can_node_afford_update() - Verifies if SLA can be updated with input data + * @sla_in: pointer to user input data for a new SLA + * @sla: pointer to SLA object selected for update + * + * Algorithm verifies if a new CIR value is big enough to satisfy currently + * assigned child SLAs and if PIR can be updated + * + * Return: + * * true - SLA can be updated + * * false - SLA cannot be updated + */ +static bool can_node_afford_update(struct adf_rl_sla_input_data *sla_in, + struct rl_sla *sla) +{ + u32 cir_in_use = sla->cir - sla->rem_cir; + + /* new CIR cannot be smaller then currently consumed value */ + if (cir_in_use > sla_in->cir) + return false; + + /* PIR of root/cluster cannot be reduced in node with assigned children */ + if (sla_in->pir < sla->pir && sla->type != RL_LEAF && cir_in_use > 0) + return false; + + return true; +} + +static bool is_enough_budget(struct adf_rl *rl_data, struct rl_sla *sla, + struct adf_rl_sla_input_data *sla_in, + bool is_update) +{ + u32 max_val = rl_data->device_data->scale_ref; + struct rl_sla *parent = sla->parent; + bool ret = true; + + if (sla_in->cir > max_val || sla_in->pir > max_val) + ret = false; + + switch (sla->type) { + case RL_LEAF: + ret &= can_parent_afford_sla(sla_in, parent, sla->cir, + is_update); + break; + case RL_CLUSTER: + ret &= can_parent_afford_sla(sla_in, parent, sla->cir, + is_update); + + if (is_update) + ret &= can_node_afford_update(sla_in, sla); + + break; + case RL_ROOT: + if (is_update) + ret &= can_node_afford_update(sla_in, sla); + + break; + default: + ret = false; + break; + } + + return ret; +} + +static void update_budget(struct rl_sla *sla, u32 old_cir, bool is_update) +{ + switch (sla->type) { + case RL_LEAF: + if (is_update) + sla->parent->rem_cir += old_cir; + + sla->parent->rem_cir -= sla->cir; + sla->rem_cir = 0; + break; + case RL_CLUSTER: + if (is_update) { + sla->parent->rem_cir += old_cir; + sla->rem_cir = sla->cir - (old_cir - sla->rem_cir); + } else { + sla->rem_cir = sla->cir; + } + + sla->parent->rem_cir -= sla->cir; + break; + case RL_ROOT: + if (is_update) + sla->rem_cir = sla->cir - (old_cir - sla->rem_cir); + else + sla->rem_cir = sla->cir; + break; + default: + break; + } +} + +/** + * get_next_free_sla_id() - finds next free ID in the SLA array + * @rl_data: Pointer to ratelimiting data structure + * + * Return: + * * 0 : RL_NODES_CNT_MAX - correct ID + * * -ENOSPC - all SLA slots are in use + */ +static int get_next_free_sla_id(struct adf_rl *rl_data) +{ + int i = 0; + + while (i < RL_NODES_CNT_MAX && rl_data->sla[i++]) + ; + + if (i == RL_NODES_CNT_MAX) + return -ENOSPC; + + return i - 1; +} + +/** + * get_next_free_node_id() - finds next free ID in the array of that node type + * @rl_data: Pointer to ratelimiting data structure + * @sla: Pointer to SLA object for which the ID is searched + * + * Return: + * * 0 : RL_[NODE_TYPE]_MAX - correct ID + * * -ENOSPC - all slots of that type are in use + */ +static int get_next_free_node_id(struct adf_rl *rl_data, struct rl_sla *sla) +{ + struct adf_hw_device_data *hw_device = GET_HW_DATA(rl_data->accel_dev); + int max_id, i, step, rp_per_leaf; + struct rl_sla **sla_list; + + rp_per_leaf = hw_device->num_banks / hw_device->num_banks_per_vf; + + /* + * Static nodes mapping: + * root0 - cluster[0,4,8,12] - leaf[0-15] + * root1 - cluster[1,5,9,13] - leaf[16-31] + * root2 - cluster[2,6,10,14] - leaf[32-47] + */ + switch (sla->type) { + case RL_LEAF: + i = sla->srv * rp_per_leaf; + step = 1; + max_id = i + rp_per_leaf; + sla_list = rl_data->leaf; + break; + case RL_CLUSTER: + i = sla->srv; + step = 4; + max_id = RL_CLUSTER_MAX; + sla_list = rl_data->cluster; + break; + case RL_ROOT: + return sla->srv; + default: + return -EINVAL; + } + + while (i < max_id && sla_list[i]) + i += step; + + if (i >= max_id) + return -ENOSPC; + + return i; +} + +u32 adf_rl_calculate_slice_tokens(struct adf_accel_dev *accel_dev, u32 sla_val, + enum adf_base_services svc_type) +{ + struct adf_rl_hw_data *device_data = &accel_dev->hw_device->rl_data; + struct adf_hw_device_data *hw_data = GET_HW_DATA(accel_dev); + u64 avail_slice_cycles, allocated_tokens; + + if (!sla_val) + return 0; + + avail_slice_cycles = hw_data->clock_frequency; + + switch (svc_type) { + case ADF_SVC_ASYM: + avail_slice_cycles *= device_data->slices.pke_cnt; + break; + case ADF_SVC_SYM: + avail_slice_cycles *= device_data->slices.cph_cnt; + break; + case ADF_SVC_DC: + avail_slice_cycles *= device_data->slices.dcpr_cnt; + break; + default: + break; + } + + do_div(avail_slice_cycles, device_data->scan_interval); + allocated_tokens = avail_slice_cycles * sla_val; + do_div(allocated_tokens, device_data->scale_ref); + + return allocated_tokens; +} + +u32 adf_rl_calculate_ae_cycles(struct adf_accel_dev *accel_dev, u32 sla_val, + enum adf_base_services svc_type) +{ + struct adf_rl_hw_data *device_data = &accel_dev->hw_device->rl_data; + struct adf_hw_device_data *hw_data = GET_HW_DATA(accel_dev); + u64 allocated_ae_cycles, avail_ae_cycles; + + if (!sla_val) + return 0; + + avail_ae_cycles = hw_data->clock_frequency; + avail_ae_cycles *= hw_data->get_num_aes(hw_data) - 1; + do_div(avail_ae_cycles, device_data->scan_interval); + + sla_val *= device_data->max_tp[svc_type]; + sla_val /= device_data->scale_ref; + + allocated_ae_cycles = (sla_val * avail_ae_cycles); + do_div(allocated_ae_cycles, device_data->max_tp[svc_type]); + + return allocated_ae_cycles; +} + +u32 adf_rl_calculate_pci_bw(struct adf_accel_dev *accel_dev, u32 sla_val, + enum adf_base_services svc_type, bool is_bw_out) +{ + struct adf_rl_hw_data *device_data = &accel_dev->hw_device->rl_data; + u64 sla_to_bytes, allocated_bw, sla_scaled; + + if (!sla_val) + return 0; + + sla_to_bytes = sla_val; + sla_to_bytes *= device_data->max_tp[svc_type]; + do_div(sla_to_bytes, device_data->scale_ref); + + sla_to_bytes *= (svc_type == ADF_SVC_ASYM) ? RL_TOKEN_ASYM_SIZE : + BYTES_PER_MBIT; + if (svc_type == ADF_SVC_DC && is_bw_out) + sla_to_bytes *= device_data->slices.dcpr_cnt - + device_data->dcpr_correction; + + sla_scaled = sla_to_bytes * device_data->pcie_scale_mul; + do_div(sla_scaled, device_data->pcie_scale_div); + allocated_bw = sla_scaled; + do_div(allocated_bw, RL_TOKEN_PCIE_SIZE); + do_div(allocated_bw, device_data->scan_interval); + + return allocated_bw; +} + +/** + * add_new_sla_entry() - creates a new SLA object and fills it with user data + * @accel_dev: pointer to acceleration device structure + * @sla_in: pointer to user input data for a new SLA + * @sla_out: Pointer to variable that will contain the address of a new + * SLA object if the operation succeeds + * + * Return: + * * 0 - ok + * * -ENOMEM - memory allocation failed + * * -EINVAL - invalid user input + * * -ENOSPC - all available SLAs are in use + */ +static int add_new_sla_entry(struct adf_accel_dev *accel_dev, + struct adf_rl_sla_input_data *sla_in, + struct rl_sla **sla_out) +{ + struct adf_rl *rl_data = accel_dev->rate_limiting; + struct rl_sla *sla; + int ret = 0; + + sla = kzalloc(sizeof(*sla), GFP_KERNEL); + if (!sla) { + ret = -ENOMEM; + goto ret_err; + } + *sla_out = sla; + + if (!is_service_enabled(accel_dev, sla_in->srv)) { + dev_notice(&GET_DEV(accel_dev), + "Provided service is not enabled\n"); + ret = -EINVAL; + goto ret_err; + } + + sla->srv = sla_in->srv; + sla->type = sla_in->type; + ret = get_next_free_node_id(rl_data, sla); + if (ret < 0) { + dev_notice(&GET_DEV(accel_dev), + "Exceeded number of available nodes for that service\n"); + goto ret_err; + } + sla->node_id = ret; + + ret = get_next_free_sla_id(rl_data); + if (ret < 0) { + dev_notice(&GET_DEV(accel_dev), + "Allocated maximum SLAs number\n"); + goto ret_err; + } + sla->sla_id = ret; + + sla->parent = find_parent(rl_data, sla_in); + if (!sla->parent && sla->type != RL_ROOT) { + if (sla_in->parent_id != RL_PARENT_DEFAULT_ID) + dev_notice(&GET_DEV(accel_dev), + "Provided parent ID does not exist or cannot be parent for this SLA."); + else + dev_notice(&GET_DEV(accel_dev), + "Unable to find parent node for this service. Is service enabled?"); + ret = -EINVAL; + goto ret_err; + } + + if (sla->type == RL_LEAF) { + ret = prepare_rp_ids(accel_dev, sla, sla_in->rp_mask); + if (!sla->ring_pairs_cnt || ret) { + dev_notice(&GET_DEV(accel_dev), + "Unable to find ring pairs to assign to the leaf"); + if (!ret) + ret = -EINVAL; + + goto ret_err; + } + } + + return 0; + +ret_err: + kfree(sla); + *sla_out = NULL; + + return ret; +} + +static int initialize_default_nodes(struct adf_accel_dev *accel_dev) +{ + struct adf_rl *rl_data = accel_dev->rate_limiting; + struct adf_rl_hw_data *device_data = rl_data->device_data; + struct adf_rl_sla_input_data sla_in = { }; + int ret = 0; + int i; + + /* Init root for each enabled service */ + sla_in.type = RL_ROOT; + sla_in.parent_id = RL_PARENT_DEFAULT_ID; + + for (i = 0; i < ADF_SVC_NONE; i++) { + if (!is_service_enabled(accel_dev, i)) + continue; + + sla_in.cir = device_data->scale_ref; + sla_in.pir = sla_in.cir; + sla_in.srv = i; + + ret = adf_rl_add_sla(accel_dev, &sla_in); + if (ret) + return ret; + } + + /* Init default cluster for each root */ + sla_in.type = RL_CLUSTER; + for (i = 0; i < ADF_SVC_NONE; i++) { + if (!rl_data->root[i]) + continue; + + sla_in.cir = rl_data->root[i]->cir; + sla_in.pir = sla_in.cir; + sla_in.srv = rl_data->root[i]->srv; + + ret = adf_rl_add_sla(accel_dev, &sla_in); + if (ret) + return ret; + } + + return 0; +} + +static void clear_sla(struct adf_rl *rl_data, struct rl_sla *sla) +{ + bool *rp_in_use = rl_data->rp_in_use; + struct rl_sla **sla_type_arr = NULL; + int i, sla_id, node_id; + u32 old_cir; + + sla_id = sla->sla_id; + node_id = sla->node_id; + old_cir = sla->cir; + sla->cir = 0; + sla->pir = 0; + + for (i = 0; i < sla->ring_pairs_cnt; i++) + rp_in_use[sla->ring_pairs_ids[i]] = false; + + update_budget(sla, old_cir, true); + get_sla_arr_of_type(rl_data, sla->type, &sla_type_arr); + assign_node_to_parent(rl_data->accel_dev, sla, true); + adf_rl_send_admin_delete_msg(rl_data->accel_dev, node_id, sla->type); + mark_rps_usage(sla, rl_data->rp_in_use, false); + + kfree(sla); + rl_data->sla[sla_id] = NULL; + sla_type_arr[node_id] = NULL; +} + +/** + * add_update_sla() - handles the creation and the update of an SLA + * @accel_dev: pointer to acceleration device structure + * @sla_in: pointer to user input data for a new/updated SLA + * @is_update: flag to indicate if this is an update or an add operation + * + * Return: + * * 0 - ok + * * -ENOMEM - memory allocation failed + * * -EINVAL - user input data cannot be used to create SLA + * * -ENOSPC - all available SLAs are in use + */ +static int add_update_sla(struct adf_accel_dev *accel_dev, + struct adf_rl_sla_input_data *sla_in, bool is_update) +{ + struct adf_rl *rl_data = accel_dev->rate_limiting; + struct rl_sla **sla_type_arr = NULL; + struct rl_sla *sla = NULL; + u32 old_cir = 0; + int ret; + + if (!sla_in) { + dev_warn(&GET_DEV(accel_dev), + "SLA input data pointer is missing\n"); + ret = -EFAULT; + goto ret_err; + } + + /* Input validation */ + ret = validate_user_input(accel_dev, sla_in, is_update); + if (ret) + goto ret_err; + + mutex_lock(&rl_data->rl_lock); + + if (is_update) { + ret = validate_sla_id(accel_dev, sla_in->sla_id); + if (ret) + goto ret_err; + + sla = rl_data->sla[sla_in->sla_id]; + old_cir = sla->cir; + } else { + ret = add_new_sla_entry(accel_dev, sla_in, &sla); + if (ret) + goto ret_err; + } + + if (!is_enough_budget(rl_data, sla, sla_in, is_update)) { + dev_notice(&GET_DEV(accel_dev), + "Input value exceeds the remaining budget%s\n", + is_update ? " or more budget is already in use" : ""); + ret = -EINVAL; + goto ret_err; + } + sla->cir = sla_in->cir; + sla->pir = sla_in->pir; + + /* Apply SLA */ + assign_node_to_parent(accel_dev, sla, false); + ret = adf_rl_send_admin_add_update_msg(accel_dev, sla, is_update); + if (ret) { + dev_notice(&GET_DEV(accel_dev), + "Failed to apply an SLA\n"); + goto ret_err; + } + update_budget(sla, old_cir, is_update); + + if (!is_update) { + mark_rps_usage(sla, rl_data->rp_in_use, true); + get_sla_arr_of_type(rl_data, sla->type, &sla_type_arr); + sla_type_arr[sla->node_id] = sla; + rl_data->sla[sla->sla_id] = sla; + } + + sla_in->sla_id = sla->sla_id; + goto ret_ok; + +ret_err: + if (!is_update) { + sla_in->sla_id = -1; + kfree(sla); + } +ret_ok: + mutex_unlock(&rl_data->rl_lock); + return ret; +} + +/** + * adf_rl_add_sla() - handles the creation of an SLA + * @accel_dev: pointer to acceleration device structure + * @sla_in: pointer to user input data required to add an SLA + * + * Return: + * * 0 - ok + * * -ENOMEM - memory allocation failed + * * -EINVAL - invalid user input + * * -ENOSPC - all available SLAs are in use + */ +int adf_rl_add_sla(struct adf_accel_dev *accel_dev, + struct adf_rl_sla_input_data *sla_in) +{ + return add_update_sla(accel_dev, sla_in, false); +} + +/** + * adf_rl_update_sla() - handles the update of an SLA + * @accel_dev: pointer to acceleration device structure + * @sla_in: pointer to user input data required to update an SLA + * + * Return: + * * 0 - ok + * * -EINVAL - user input data cannot be used to update SLA + */ +int adf_rl_update_sla(struct adf_accel_dev *accel_dev, + struct adf_rl_sla_input_data *sla_in) +{ + return add_update_sla(accel_dev, sla_in, true); +} + +/** + * adf_rl_get_sla() - returns an existing SLA data + * @accel_dev: pointer to acceleration device structure + * @sla_in: pointer to user data where SLA info will be stored + * + * The sla_id for which data are requested should be set in sla_id structure + * + * Return: + * * 0 - ok + * * -EINVAL - provided sla_id does not exist + */ +int adf_rl_get_sla(struct adf_accel_dev *accel_dev, + struct adf_rl_sla_input_data *sla_in) +{ + struct rl_sla *sla; + int ret, i; + + ret = validate_sla_id(accel_dev, sla_in->sla_id); + if (ret) + return ret; + + sla = accel_dev->rate_limiting->sla[sla_in->sla_id]; + sla_in->type = sla->type; + sla_in->srv = sla->srv; + sla_in->cir = sla->cir; + sla_in->pir = sla->pir; + sla_in->rp_mask = 0U; + if (sla->parent) + sla_in->parent_id = sla->parent->sla_id; + else + sla_in->parent_id = RL_PARENT_DEFAULT_ID; + + for (i = 0; i < sla->ring_pairs_cnt; i++) + sla_in->rp_mask |= BIT(sla->ring_pairs_ids[i]); + + return 0; +} + +/** + * adf_rl_get_capability_remaining() - returns the remaining SLA value (CIR) for + * selected service or provided sla_id + * @accel_dev: pointer to acceleration device structure + * @srv: service ID for which capability is requested + * @sla_id: ID of the cluster or root to which we want assign a new SLA + * + * Check if the provided SLA id is valid. If it is and the service matches + * the requested service and the type is cluster or root, return the remaining + * capability. + * If the provided ID does not match the service or type, return the remaining + * capacity of the default cluster for that service. + * + * Return: + * * Positive value - correct remaining value + * * -EINVAL - algorithm cannot find a remaining value for provided data + */ +int adf_rl_get_capability_remaining(struct adf_accel_dev *accel_dev, + enum adf_base_services srv, int sla_id) +{ + struct adf_rl *rl_data = accel_dev->rate_limiting; + struct rl_sla *sla = NULL; + int i; + + if (srv >= ADF_SVC_NONE) + return -EINVAL; + + if (sla_id > RL_SLA_EMPTY_ID && !validate_sla_id(accel_dev, sla_id)) { + sla = rl_data->sla[sla_id]; + + if (sla->srv == srv && sla->type <= RL_CLUSTER) + goto ret_ok; + } + + for (i = 0; i < RL_CLUSTER_MAX; i++) { + if (!rl_data->cluster[i]) + continue; + + if (rl_data->cluster[i]->srv == srv) { + sla = rl_data->cluster[i]; + goto ret_ok; + } + } + + return -EINVAL; +ret_ok: + return sla->rem_cir; +} + +/** + * adf_rl_remove_sla() - removes provided sla_id + * @accel_dev: pointer to acceleration device structure + * @sla_id: ID of the cluster or root to which we want assign an new SLA + * + * Return: + * * 0 - ok + * * -EINVAL - wrong sla_id or it still have assigned children + */ +int adf_rl_remove_sla(struct adf_accel_dev *accel_dev, u32 sla_id) +{ + struct adf_rl *rl_data = accel_dev->rate_limiting; + struct rl_sla *sla; + int ret = 0; + + mutex_lock(&rl_data->rl_lock); + ret = validate_sla_id(accel_dev, sla_id); + if (ret) + goto err_ret; + + sla = rl_data->sla[sla_id]; + + if (sla->type < RL_LEAF && sla->rem_cir != sla->cir) { + dev_notice(&GET_DEV(accel_dev), + "To remove parent SLA all its children must be removed first"); + ret = -EINVAL; + goto err_ret; + } + + clear_sla(rl_data, sla); + +err_ret: + mutex_unlock(&rl_data->rl_lock); + return ret; +} + +/** + * adf_rl_remove_sla_all() - removes all SLAs from device + * @accel_dev: pointer to acceleration device structure + * @incl_default: set to true if default SLAs also should be removed + */ +void adf_rl_remove_sla_all(struct adf_accel_dev *accel_dev, bool incl_default) +{ + struct adf_rl *rl_data = accel_dev->rate_limiting; + int end_type = incl_default ? RL_ROOT : RL_LEAF; + struct rl_sla **sla_type_arr = NULL; + u32 max_id; + int i, j; + + mutex_lock(&rl_data->rl_lock); + + /* Unregister and remove all SLAs */ + for (j = RL_LEAF; j >= end_type; j--) { + max_id = get_sla_arr_of_type(rl_data, j, &sla_type_arr); + + for (i = 0; i < max_id; i++) { + if (!sla_type_arr[i]) + continue; + + clear_sla(rl_data, sla_type_arr[i]); + } + } + + mutex_unlock(&rl_data->rl_lock); +} + +int adf_rl_init(struct adf_accel_dev *accel_dev) +{ + struct adf_hw_device_data *hw_data = GET_HW_DATA(accel_dev); + struct adf_rl_hw_data *rl_hw_data = &hw_data->rl_data; + struct adf_rl *rl; + int ret = 0; + + /* Validate device parameters */ + if (RL_VALIDATE_NON_ZERO(rl_hw_data->max_tp[ADF_SVC_ASYM]) || + RL_VALIDATE_NON_ZERO(rl_hw_data->max_tp[ADF_SVC_SYM]) || + RL_VALIDATE_NON_ZERO(rl_hw_data->max_tp[ADF_SVC_DC]) || + RL_VALIDATE_NON_ZERO(rl_hw_data->scan_interval) || + RL_VALIDATE_NON_ZERO(rl_hw_data->pcie_scale_div) || + RL_VALIDATE_NON_ZERO(rl_hw_data->pcie_scale_mul) || + RL_VALIDATE_NON_ZERO(rl_hw_data->scale_ref)) { + ret = -EOPNOTSUPP; + goto err_ret; + } + + rl = kzalloc(sizeof(*rl), GFP_KERNEL); + if (!rl) { + ret = -ENOMEM; + goto err_ret; + } + + mutex_init(&rl->rl_lock); + rl->device_data = &accel_dev->hw_device->rl_data; + rl->accel_dev = accel_dev; + accel_dev->rate_limiting = rl; + +err_ret: + return ret; +} + +int adf_rl_start(struct adf_accel_dev *accel_dev) +{ + struct adf_rl_hw_data *rl_hw_data = &GET_HW_DATA(accel_dev)->rl_data; + void __iomem *pmisc_addr = adf_get_pmisc_base(accel_dev); + u16 fw_caps = GET_HW_DATA(accel_dev)->fw_capabilities; + int ret; + + if (!accel_dev->rate_limiting) { + ret = -EOPNOTSUPP; + goto ret_err; + } + + if ((fw_caps & RL_CAPABILITY_MASK) != RL_CAPABILITY_VALUE) { + dev_info(&GET_DEV(accel_dev), "not supported\n"); + ret = -EOPNOTSUPP; + goto ret_free; + } + + ADF_CSR_WR(pmisc_addr, rl_hw_data->pciin_tb_offset, + RL_TOKEN_GRANULARITY_PCIEIN_BUCKET); + ADF_CSR_WR(pmisc_addr, rl_hw_data->pciout_tb_offset, + RL_TOKEN_GRANULARITY_PCIEOUT_BUCKET); + + ret = adf_rl_send_admin_init_msg(accel_dev, &rl_hw_data->slices); + if (ret) { + dev_err(&GET_DEV(accel_dev), "initialization failed\n"); + goto ret_free; + } + + ret = initialize_default_nodes(accel_dev); + if (ret) { + dev_err(&GET_DEV(accel_dev), + "failed to initialize default SLAs\n"); + goto ret_sla_rm; + } + + return 0; + +ret_sla_rm: + adf_rl_remove_sla_all(accel_dev, true); +ret_free: + kfree(accel_dev->rate_limiting); + accel_dev->rate_limiting = NULL; +ret_err: + return ret; +} + +void adf_rl_stop(struct adf_accel_dev *accel_dev) +{ + if (!accel_dev->rate_limiting) + return; + + adf_rl_remove_sla_all(accel_dev, true); +} + +void adf_rl_exit(struct adf_accel_dev *accel_dev) +{ + if (!accel_dev->rate_limiting) + return; + + kfree(accel_dev->rate_limiting); + accel_dev->rate_limiting = NULL; +} diff --git a/drivers/crypto/intel/qat/qat_common/adf_rl.h b/drivers/crypto/intel/qat/qat_common/adf_rl.h new file mode 100644 index 000000000000..1ccb6613c92e --- /dev/null +++ b/drivers/crypto/intel/qat/qat_common/adf_rl.h @@ -0,0 +1,169 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* Copyright(c) 2023 Intel Corporation */ + +#ifndef ADF_RL_H_ +#define ADF_RL_H_ + +#include <linux/mutex.h> +#include <linux/types.h> + +struct adf_accel_dev; + +#define RL_ROOT_MAX 4 +#define RL_CLUSTER_MAX 16 +#define RL_LEAF_MAX 64 +#define RL_NODES_CNT_MAX (RL_ROOT_MAX + RL_CLUSTER_MAX + RL_LEAF_MAX) +#define RL_RP_CNT_PER_LEAF_MAX 4U +#define RL_RP_CNT_MAX 64 +#define RL_SLA_EMPTY_ID -1 +#define RL_PARENT_DEFAULT_ID -1 + +enum rl_node_type { + RL_ROOT, + RL_CLUSTER, + RL_LEAF, +}; + +enum adf_base_services { + ADF_SVC_ASYM = 0, + ADF_SVC_SYM, + ADF_SVC_DC, + ADF_SVC_NONE, +}; + +/** + * struct adf_rl_sla_input_data - ratelimiting user input data structure + * @rp_mask: 64 bit bitmask of ring pair IDs which will be assigned to SLA. + * Eg. 0x5 -> RP0 and RP2 assigned; 0xA005 -> RP0,2,13,15 assigned. + * @sla_id: ID of current SLA for operations update, rm, get. For the add + * operation, this field will be updated with the ID of the newly + * added SLA + * @parent_id: ID of the SLA to which the current one should be assigned. + * Set to -1 to refer to the default parent. + * @cir: Committed information rate. Rate guaranteed to be achieved. Input value + * is expressed in permille scale, i.e. 1000 refers to the maximum + * device throughput for a selected service. + * @pir: Peak information rate. Maximum rate available that the SLA can achieve. + * Input value is expressed in permille scale, i.e. 1000 refers to + * the maximum device throughput for a selected service. + * @type: SLA type: root, cluster, node + * @srv: Service associated to the SLA: asym, sym dc. + * + * This structure is used to perform operations on an SLA. + * Depending on the operation, some of the parameters are ignored. + * The following list reports which parameters should be set for each operation. + * - add: all except sla_id + * - update: cir, pir, sla_id + * - rm: sla_id + * - rm_all: - + * - get: sla_id + * - get_capability_rem: srv, sla_id + */ +struct adf_rl_sla_input_data { + u64 rp_mask; + int sla_id; + int parent_id; + unsigned int cir; + unsigned int pir; + enum rl_node_type type; + enum adf_base_services srv; +}; + +struct rl_slice_cnt { + u8 dcpr_cnt; + u8 pke_cnt; + u8 cph_cnt; +}; + +struct adf_rl_hw_data { + u32 scale_ref; + u32 scan_interval; + u32 r2l_offset; + u32 l2c_offset; + u32 c2s_offset; + u32 pciin_tb_offset; + u32 pciout_tb_offset; + u32 pcie_scale_mul; + u32 pcie_scale_div; + u32 dcpr_correction; + u32 max_tp[RL_ROOT_MAX]; + struct rl_slice_cnt slices; +}; + +/** + * struct adf_rl - ratelimiting data structure + * @accel_dev: pointer to acceleration device data + * @device_data: pointer to rate limiting data specific to a device type (or revision) + * @sla: array of pointers to SLA objects + * @root: array of pointers to root type SLAs, element number reflects node_id + * @cluster: array of pointers to cluster type SLAs, element number reflects node_id + * @leaf: array of pointers to leaf type SLAs, element number reflects node_id + * @rp_in_use: array of ring pair IDs already used in one of SLAs + * @rl_lock: mutex object which is protecting data in this structure + * @input: structure which is used for holding the data received from user + */ +struct adf_rl { + struct adf_accel_dev *accel_dev; + struct adf_rl_hw_data *device_data; + /* mapping sla_id to SLA objects */ + struct rl_sla *sla[RL_NODES_CNT_MAX]; + struct rl_sla *root[RL_ROOT_MAX]; + struct rl_sla *cluster[RL_CLUSTER_MAX]; + struct rl_sla *leaf[RL_LEAF_MAX]; + bool rp_in_use[RL_RP_CNT_MAX]; + /* Mutex protecting writing to SLAs lists */ + struct mutex rl_lock; +}; + +/** + * struct rl_sla - SLA object data structure + * @parent: pointer to the parent SLA (root/cluster) + * @type: SLA type + * @srv: service associated with this SLA + * @sla_id: ID of the SLA, used as element number in SLA array and as identifier + * shared with the user + * @node_id: ID of node, each of SLA type have a separate ID list + * @cir: committed information rate + * @pir: peak information rate (PIR >= CIR) + * @rem_cir: if this SLA is a parent then this field represents a remaining + * value to be used by child SLAs. + * @ring_pairs_ids: array with numeric ring pairs IDs assigned to this SLA + * @ring_pairs_cnt: number of assigned ring pairs listed in the array above + */ +struct rl_sla { + struct rl_sla *parent; + enum rl_node_type type; + enum adf_base_services srv; + u32 sla_id; + u32 node_id; + u32 cir; + u32 pir; + u32 rem_cir; + u16 ring_pairs_ids[RL_RP_CNT_PER_LEAF_MAX]; + u16 ring_pairs_cnt; +}; + +int adf_rl_add_sla(struct adf_accel_dev *accel_dev, + struct adf_rl_sla_input_data *sla_in); +int adf_rl_update_sla(struct adf_accel_dev *accel_dev, + struct adf_rl_sla_input_data *sla_in); +int adf_rl_get_sla(struct adf_accel_dev *accel_dev, + struct adf_rl_sla_input_data *sla_in); +int adf_rl_get_capability_remaining(struct adf_accel_dev *accel_dev, + enum adf_base_services srv, int sla_id); +int adf_rl_remove_sla(struct adf_accel_dev *accel_dev, u32 sla_id); +void adf_rl_remove_sla_all(struct adf_accel_dev *accel_dev, bool incl_default); + +int adf_rl_init(struct adf_accel_dev *accel_dev); +int adf_rl_start(struct adf_accel_dev *accel_dev); +void adf_rl_stop(struct adf_accel_dev *accel_dev); +void adf_rl_exit(struct adf_accel_dev *accel_dev); + +u32 adf_rl_calculate_pci_bw(struct adf_accel_dev *accel_dev, u32 sla_val, + enum adf_base_services svc_type, bool is_bw_out); +u32 adf_rl_calculate_ae_cycles(struct adf_accel_dev *accel_dev, u32 sla_val, + enum adf_base_services svc_type); +u32 adf_rl_calculate_slice_tokens(struct adf_accel_dev *accel_dev, u32 sla_val, + enum adf_base_services svc_type); + +#endif /* ADF_RL_H_ */ diff --git a/drivers/crypto/intel/qat/qat_common/adf_rl_admin.c b/drivers/crypto/intel/qat/qat_common/adf_rl_admin.c new file mode 100644 index 000000000000..698a14f4ce66 --- /dev/null +++ b/drivers/crypto/intel/qat/qat_common/adf_rl_admin.c @@ -0,0 +1,97 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* Copyright(c) 2023 Intel Corporation */ + +#include <linux/dma-mapping.h> +#include <linux/pci.h> + +#include "adf_admin.h" +#include "adf_accel_devices.h" +#include "adf_rl_admin.h" + +static void +prep_admin_req_msg(struct rl_sla *sla, dma_addr_t dma_addr, + struct icp_qat_fw_init_admin_sla_config_params *fw_params, + struct icp_qat_fw_init_admin_req *req, bool is_update) +{ + req->cmd_id = is_update ? ICP_QAT_FW_RL_UPDATE : ICP_QAT_FW_RL_ADD; + req->init_cfg_ptr = dma_addr; + req->init_cfg_sz = sizeof(*fw_params); + req->node_id = sla->node_id; + req->node_type = sla->type; + req->rp_count = sla->ring_pairs_cnt; + req->svc_type = sla->srv; +} + +static void +prep_admin_req_params(struct adf_accel_dev *accel_dev, struct rl_sla *sla, + struct icp_qat_fw_init_admin_sla_config_params *fw_params) +{ + fw_params->pcie_in_cir = + adf_rl_calculate_pci_bw(accel_dev, sla->cir, sla->srv, false); + fw_params->pcie_in_pir = + adf_rl_calculate_pci_bw(accel_dev, sla->pir, sla->srv, false); + fw_params->pcie_out_cir = + adf_rl_calculate_pci_bw(accel_dev, sla->cir, sla->srv, true); + fw_params->pcie_out_pir = + adf_rl_calculate_pci_bw(accel_dev, sla->pir, sla->srv, true); + + fw_params->slice_util_cir = + adf_rl_calculate_slice_tokens(accel_dev, sla->cir, sla->srv); + fw_params->slice_util_pir = + adf_rl_calculate_slice_tokens(accel_dev, sla->pir, sla->srv); + + fw_params->ae_util_cir = + adf_rl_calculate_ae_cycles(accel_dev, sla->cir, sla->srv); + fw_params->ae_util_pir = + adf_rl_calculate_ae_cycles(accel_dev, sla->pir, sla->srv); + + memcpy(fw_params->rp_ids, sla->ring_pairs_ids, + sizeof(sla->ring_pairs_ids)); +} + +int adf_rl_send_admin_init_msg(struct adf_accel_dev *accel_dev, + struct rl_slice_cnt *slices_int) +{ + struct icp_qat_fw_init_admin_slice_cnt slices_resp = { }; + int ret; + + ret = adf_send_admin_rl_init(accel_dev, &slices_resp); + if (ret) + return ret; + + slices_int->dcpr_cnt = slices_resp.dcpr_cnt; + slices_int->pke_cnt = slices_resp.pke_cnt; + /* For symmetric crypto, slice tokens are relative to the UCS slice */ + slices_int->cph_cnt = slices_resp.ucs_cnt; + + return 0; +} + +int adf_rl_send_admin_add_update_msg(struct adf_accel_dev *accel_dev, + struct rl_sla *sla, bool is_update) +{ + struct icp_qat_fw_init_admin_sla_config_params *fw_params; + struct icp_qat_fw_init_admin_req req = { }; + dma_addr_t dma_addr; + int ret; + + fw_params = dma_alloc_coherent(&GET_DEV(accel_dev), sizeof(*fw_params), + &dma_addr, GFP_KERNEL); + if (!fw_params) + return -ENOMEM; + + prep_admin_req_params(accel_dev, sla, fw_params); + prep_admin_req_msg(sla, dma_addr, fw_params, &req, is_update); + ret = adf_send_admin_rl_add_update(accel_dev, &req); + + dma_free_coherent(&GET_DEV(accel_dev), sizeof(*fw_params), fw_params, + dma_addr); + + return ret; +} + +int adf_rl_send_admin_delete_msg(struct adf_accel_dev *accel_dev, u16 node_id, + u8 node_type) +{ + return adf_send_admin_rl_delete(accel_dev, node_id, node_type); +} diff --git a/drivers/crypto/intel/qat/qat_common/adf_rl_admin.h b/drivers/crypto/intel/qat/qat_common/adf_rl_admin.h new file mode 100644 index 000000000000..dd5419b7e896 --- /dev/null +++ b/drivers/crypto/intel/qat/qat_common/adf_rl_admin.h @@ -0,0 +1,18 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* Copyright(c) 2023 Intel Corporation */ + +#ifndef ADF_RL_ADMIN_H_ +#define ADF_RL_ADMIN_H_ + +#include <linux/types.h> + +#include "adf_rl.h" + +int adf_rl_send_admin_init_msg(struct adf_accel_dev *accel_dev, + struct rl_slice_cnt *slices_int); +int adf_rl_send_admin_add_update_msg(struct adf_accel_dev *accel_dev, + struct rl_sla *sla, bool is_update); +int adf_rl_send_admin_delete_msg(struct adf_accel_dev *accel_dev, u16 node_id, + u8 node_type); + +#endif /* ADF_RL_ADMIN_H_ */ diff --git a/drivers/crypto/intel/qat/qat_common/icp_qat_fw_init_admin.h b/drivers/crypto/intel/qat/qat_common/icp_qat_fw_init_admin.h index e4de9a30e0bd..cd418b51d9f3 100644 --- a/drivers/crypto/intel/qat/qat_common/icp_qat_fw_init_admin.h +++ b/drivers/crypto/intel/qat/qat_common/icp_qat_fw_init_admin.h @@ -5,6 +5,8 @@ #include "icp_qat_fw.h" +#define RL_MAX_RP_IDS 16 + enum icp_qat_fw_init_admin_cmd_id { ICP_QAT_FW_INIT_AE = 0, ICP_QAT_FW_TRNG_ENABLE = 1, @@ -19,10 +21,14 @@ enum icp_qat_fw_init_admin_cmd_id { ICP_QAT_FW_CRYPTO_CAPABILITY_GET = 10, ICP_QAT_FW_DC_CHAIN_INIT = 11, ICP_QAT_FW_HEARTBEAT_TIMER_SET = 13, + ICP_QAT_FW_RL_INIT = 15, ICP_QAT_FW_TIMER_GET = 19, ICP_QAT_FW_CNV_STATS_GET = 20, ICP_QAT_FW_PM_STATE_CONFIG = 128, ICP_QAT_FW_PM_INFO = 129, + ICP_QAT_FW_RL_ADD = 134, + ICP_QAT_FW_RL_UPDATE = 135, + ICP_QAT_FW_RL_REMOVE = 136, }; enum icp_qat_fw_init_admin_resp_status { @@ -30,6 +36,30 @@ enum icp_qat_fw_init_admin_resp_status { ICP_QAT_FW_INIT_RESP_STATUS_FAIL }; +struct icp_qat_fw_init_admin_slice_cnt { + __u8 cpr_cnt; + __u8 xlt_cnt; + __u8 dcpr_cnt; + __u8 pke_cnt; + __u8 wat_cnt; + __u8 wcp_cnt; + __u8 ucs_cnt; + __u8 cph_cnt; + __u8 ath_cnt; +}; + +struct icp_qat_fw_init_admin_sla_config_params { + __u32 pcie_in_cir; + __u32 pcie_in_pir; + __u32 pcie_out_cir; + __u32 pcie_out_pir; + __u32 slice_util_cir; + __u32 slice_util_pir; + __u32 ae_util_cir; + __u32 ae_util_pir; + __u16 rp_ids[RL_MAX_RP_IDS]; +}; + struct icp_qat_fw_init_admin_req { __u16 init_cfg_sz; __u8 resrvd1; @@ -49,6 +79,13 @@ struct icp_qat_fw_init_admin_req { struct { __u32 heartbeat_ticks; }; + struct { + __u16 node_id; + __u8 node_type; + __u8 svc_type; + __u8 resrvd5[3]; + __u8 rp_count; + }; __u32 idle_filter; }; @@ -110,6 +147,7 @@ struct icp_qat_fw_init_admin_resp { __u32 unsuccessful_count; __u64 resrvd8; }; + struct icp_qat_fw_init_admin_slice_cnt slices; __u16 fw_capabilities; }; } __packed; |