diff options
Diffstat (limited to 'drivers/crypto/caam_jr/caam_jr_hw.c')
| -rw-r--r-- | drivers/crypto/caam_jr/caam_jr_hw.c | 367 |
1 files changed, 367 insertions, 0 deletions
diff --git a/drivers/crypto/caam_jr/caam_jr_hw.c b/drivers/crypto/caam_jr/caam_jr_hw.c new file mode 100644 index 00000000..4a2b0899 --- /dev/null +++ b/drivers/crypto/caam_jr/caam_jr_hw.c @@ -0,0 +1,367 @@ +/* SPDX-License-Identifier: BSD-3-Clause + * Copyright 2017-2018 NXP + */ + +#include <fcntl.h> +#include <unistd.h> +#include <inttypes.h> +#include <rte_common.h> +#include <rte_memory.h> +#include <rte_malloc.h> +#include <rte_crypto.h> +#include <rte_security.h> + +#include <caam_jr_config.h> +#include <caam_jr_hw_specific.h> +#include <caam_jr_pvt.h> +#include <caam_jr_log.h> + +/* RTA header files */ +#include <hw/desc/common.h> +#include <hw/desc/algo.h> +#include <hw/desc/ipsec.h> + +/* Used to retry resetting a job ring in SEC hardware. */ +#define SEC_TIMEOUT 100000 + +/* @brief Process Jump Halt Condition related errors + * + * @param [in] error_code The error code in the descriptor status word + */ +static inline void +hw_handle_jmp_halt_cond_err(union hw_error_code error_code) +{ + CAAM_JR_DEBUG("JMP: %d, Descriptor Index: 0x%x, Condition: 0x%x", + error_code.error_desc.jmp_halt_cond_src.jmp, + error_code.error_desc.jmp_halt_cond_src.desc_idx, + error_code.error_desc.jmp_halt_cond_src.cond); + (void)error_code; +} + +/* @brief Process DECO related errors + * + * @param [in] error_code The error code in the descriptor status word + */ +static inline void +hw_handle_deco_err(union hw_error_code error_code) +{ + CAAM_JR_DEBUG("JMP: %d, Descriptor Index: 0x%x", + error_code.error_desc.deco_src.jmp, + error_code.error_desc.deco_src.desc_idx); + + switch (error_code.error_desc.deco_src.desc_err) { + case SEC_HW_ERR_DECO_HFN_THRESHOLD: + CAAM_JR_DEBUG(" Warning: Descriptor completed normally," + "but 3GPP HFN matches or exceeds the Threshold "); + break; + default: + CAAM_JR_DEBUG("Error 0x%04x not implemented", + error_code.error_desc.deco_src.desc_err); + break; + } +} + +/* @brief Process Jump Halt User Status related errors + * + * @param [in] error_code The error code in the descriptor status word + */ +static inline void +hw_handle_jmp_halt_user_err(union hw_error_code error_code __rte_unused) +{ + CAAM_JR_DEBUG(" Not implemented"); +} + +/* @brief Process CCB related errors + * + * @param [in] error_code The error code in the descriptor status word + */ +static inline void +hw_handle_ccb_err(union hw_error_code hw_error_code __rte_unused) +{ + CAAM_JR_DEBUG(" Not implemented"); +} + +/* @brief Process Job Ring related errors + * + * @param [in] error_code The error code in the descriptor status word + */ +static inline void +hw_handle_jr_err(union hw_error_code hw_error_code __rte_unused) +{ + CAAM_JR_DEBUG(" Not implemented"); +} + +int +hw_reset_job_ring(struct sec_job_ring_t *job_ring) +{ + int ret = 0; + + ASSERT(job_ring->register_base_addr != NULL); + + /* First reset the job ring in hw */ + ret = hw_shutdown_job_ring(job_ring); + SEC_ASSERT(ret == 0, ret, "Failed resetting job ring in hardware"); + + /* In order to have the HW JR in a workable state + * after a reset, I need to re-write the input + * queue size, input start address, output queue + * size and output start address + */ + /* Write the JR input queue size to the HW register */ + hw_set_input_ring_size(job_ring, SEC_JOB_RING_SIZE); + + /* Write the JR output queue size to the HW register */ + hw_set_output_ring_size(job_ring, SEC_JOB_RING_SIZE); + + /* Write the JR input queue start address */ + hw_set_input_ring_start_addr(job_ring, + caam_jr_dma_vtop(job_ring->input_ring)); + CAAM_JR_DEBUG(" Set input ring base address to : Virtual: 0x%" PRIx64 + ",Physical: 0x%" PRIx64 ", Read from HW: 0x%" PRIx64, + (uint64_t)(uintptr_t)job_ring->input_ring, + caam_jr_dma_vtop(job_ring->input_ring), + hw_get_inp_queue_base(job_ring)); + + /* Write the JR output queue start address */ + hw_set_output_ring_start_addr(job_ring, + caam_jr_dma_vtop(job_ring->output_ring)); + CAAM_JR_DEBUG(" Set output ring base address to: Virtual: 0x%" PRIx64 + ",Physical: 0x%" PRIx64 ", Read from HW: 0x%" PRIx64, + (uint64_t)(uintptr_t)job_ring->output_ring, + caam_jr_dma_vtop(job_ring->output_ring), + hw_get_out_queue_base(job_ring)); + return ret; +} + +int +hw_shutdown_job_ring(struct sec_job_ring_t *job_ring) +{ + unsigned int timeout = SEC_TIMEOUT; + uint32_t tmp = 0; + int usleep_interval = 10; + + if (job_ring->register_base_addr == NULL) { + CAAM_JR_ERR("Jr[%p] has reg base addr as NULL.driver not init", + job_ring); + return 0; + } + + CAAM_JR_INFO("Resetting Job ring %p", job_ring); + + /* + * Mask interrupts since we are going to poll + * for reset completion status + * Also, at POR, interrupts are ENABLED on a JR, thus + * this is the point where I can disable them without + * changing the code logic too much + */ + caam_jr_disable_irqs(job_ring->irq_fd); + + /* initiate flush (required prior to reset) */ + SET_JR_REG(JRCR, job_ring, JR_REG_JRCR_VAL_RESET); + + /* dummy read */ + tmp = GET_JR_REG(JRCR, job_ring); + + do { + tmp = GET_JR_REG(JRINT, job_ring); + usleep(usleep_interval); + } while (((tmp & JRINT_ERR_HALT_MASK) == + JRINT_ERR_HALT_INPROGRESS) && --timeout); + + CAAM_JR_INFO("JRINT is %x", tmp); + if ((tmp & JRINT_ERR_HALT_MASK) != JRINT_ERR_HALT_COMPLETE || + timeout == 0) { + CAAM_JR_ERR("0x%x, %d", tmp, timeout); + /* unmask interrupts */ + if (job_ring->jr_mode != SEC_NOTIFICATION_TYPE_POLL) + caam_jr_enable_irqs(job_ring->irq_fd); + return -1; + } + + /* Initiate reset */ + timeout = SEC_TIMEOUT; + SET_JR_REG(JRCR, job_ring, JR_REG_JRCR_VAL_RESET); + + do { + tmp = GET_JR_REG(JRCR, job_ring); + usleep(usleep_interval); + } while ((tmp & JR_REG_JRCR_VAL_RESET) && --timeout); + + CAAM_JR_DEBUG("JRCR is %x", tmp); + if (timeout == 0) { + CAAM_JR_ERR("Failed to reset hw job ring %p", job_ring); + /* unmask interrupts */ + if (job_ring->jr_mode != SEC_NOTIFICATION_TYPE_POLL) + caam_jr_enable_irqs(job_ring->irq_fd); + return -1; + } + /* unmask interrupts */ + if (job_ring->jr_mode != SEC_NOTIFICATION_TYPE_POLL) + caam_jr_enable_irqs(job_ring->irq_fd); + return 0; + +} + +void +hw_handle_job_ring_error(struct sec_job_ring_t *job_ring __rte_unused, + uint32_t error_code) +{ + union hw_error_code hw_err_code; + + hw_err_code.error = error_code; + switch (hw_err_code.error_desc.value.ssrc) { + case SEC_HW_ERR_SSRC_NO_SRC: + ASSERT(hw_err_code.error_desc.no_status_src.res == 0); + CAAM_JR_ERR("No Status Source "); + break; + case SEC_HW_ERR_SSRC_CCB_ERR: + CAAM_JR_ERR("CCB Status Source"); + hw_handle_ccb_err(hw_err_code); + break; + case SEC_HW_ERR_SSRC_JMP_HALT_U: + CAAM_JR_ERR("Jump Halt User Status Source"); + hw_handle_jmp_halt_user_err(hw_err_code); + break; + case SEC_HW_ERR_SSRC_DECO: + CAAM_JR_ERR("DECO Status Source"); + hw_handle_deco_err(hw_err_code); + break; + case SEC_HW_ERR_SSRC_JR: + CAAM_JR_ERR("Job Ring Status Source"); + hw_handle_jr_err(hw_err_code); + break; + case SEC_HW_ERR_SSRC_JMP_HALT_COND: + CAAM_JR_ERR("Jump Halt Condition Codes"); + hw_handle_jmp_halt_cond_err(hw_err_code); + break; + default: + ASSERT(0); + CAAM_JR_ERR("Unknown SSRC"); + break; + } +} + +void +hw_job_ring_error_print(struct sec_job_ring_t *job_ring, int code) +{ + switch (code) { + case JRINT_ERR_WRITE_STATUS: + CAAM_JR_ERR("Error writing status to Output Ring "); + break; + case JRINT_ERR_BAD_INPUT_BASE: + CAAM_JR_ERR( + "Bad Input Ring Base (%p) (not on a 4-byte boundary) ", + (void *)job_ring); + break; + case JRINT_ERR_BAD_OUTPUT_BASE: + CAAM_JR_ERR( + "Bad Output Ring Base (%p) (not on a 4-byte boundary) ", + (void *)job_ring); + break; + case JRINT_ERR_WRITE_2_IRBA: + CAAM_JR_ERR( + "Invalid write to Input Ring Base Address Register "); + break; + case JRINT_ERR_WRITE_2_ORBA: + CAAM_JR_ERR( + "Invalid write to Output Ring Base Address Register "); + break; + case JRINT_ERR_RES_B4_HALT: + CAAM_JR_ERR( + "Job Ring [%p] released before Job Ring is halted", + (void *)job_ring); + break; + case JRINT_ERR_REM_TOO_MANY: + CAAM_JR_ERR("Removed too many jobs from job ring [%p]", + (void *)job_ring); + break; + case JRINT_ERR_ADD_TOO_MANY: + CAAM_JR_ERR("Added too many jobs on job ring [%p]", job_ring); + break; + default: + CAAM_JR_ERR(" Unknown SEC JR Error :%d", + code); + break; + } +} + +int +hw_job_ring_set_coalescing_param(struct sec_job_ring_t *job_ring, + uint16_t irq_coalescing_timer, + uint8_t irq_coalescing_count) +{ + uint32_t reg_val = 0; + + ASSERT(job_ring != NULL); + if (job_ring->register_base_addr == NULL) { + CAAM_JR_ERR("Jr[%p] has reg base addr as NULL.driver not init", + job_ring); + return -1; + } + /* Set descriptor count coalescing */ + reg_val |= (irq_coalescing_count << JR_REG_JRCFG_LO_ICDCT_SHIFT); + + /* Set coalescing timer value */ + reg_val |= (irq_coalescing_timer << JR_REG_JRCFG_LO_ICTT_SHIFT); + + /* Update parameters in HW */ + SET_JR_REG_LO(JRCFG, job_ring, reg_val); + CAAM_JR_DEBUG("Set coalescing params on jr %p timer:%d, desc count: %d", + job_ring, irq_coalescing_timer, irq_coalescing_timer); + + return 0; +} + +int +hw_job_ring_enable_coalescing(struct sec_job_ring_t *job_ring) +{ + uint32_t reg_val = 0; + + ASSERT(job_ring != NULL); + if (job_ring->register_base_addr == NULL) { + CAAM_JR_ERR("Jr[%p] has reg base addr as NULL.driver not init", + job_ring); + return -1; + } + + /* Get the current value of the register */ + reg_val = GET_JR_REG_LO(JRCFG, job_ring); + + /* Enable coalescing */ + reg_val |= JR_REG_JRCFG_LO_ICEN_EN; + + /* Write in hw */ + SET_JR_REG_LO(JRCFG, job_ring, reg_val); + + CAAM_JR_DEBUG("Enabled coalescing on jr %p ", + job_ring); + + return 0; +} + +int +hw_job_ring_disable_coalescing(struct sec_job_ring_t *job_ring) +{ + uint32_t reg_val = 0; + + ASSERT(job_ring != NULL); + + if (job_ring->register_base_addr == NULL) { + CAAM_JR_ERR("Jr[%p] has reg base addr as NULL.driver not init", + job_ring); + return -1; + } + + /* Get the current value of the register */ + reg_val = GET_JR_REG_LO(JRCFG, job_ring); + + /* Disable coalescing */ + reg_val &= ~JR_REG_JRCFG_LO_ICEN_EN; + + /* Write in hw */ + SET_JR_REG_LO(JRCFG, job_ring, reg_val); + CAAM_JR_DEBUG("Disabled coalescing on jr %p ", job_ring); + + return 0; +} |