1 // SPDX-License-Identifier: GPL-2.0 2 3 /* 4 * Copyright 2022 HabanaLabs, Ltd. 5 * All Rights Reserved. 6 */ 7 8 #include "habanalabs.h" 9 10 #define VCMD_CONTROL_OFFSET 0x40 /* SWREG16 */ 11 #define VCMD_IRQ_STATUS_OFFSET 0x44 /* SWREG17 */ 12 13 #define VCMD_IRQ_STATUS_ENDCMD_MASK 0x1 14 #define VCMD_IRQ_STATUS_BUSERR_MASK 0x2 15 #define VCMD_IRQ_STATUS_TIMEOUT_MASK 0x4 16 #define VCMD_IRQ_STATUS_CMDERR_MASK 0x8 17 #define VCMD_IRQ_STATUS_ABORT_MASK 0x10 18 #define VCMD_IRQ_STATUS_RESET_MASK 0x20 19 20 static void dec_print_abnrm_intr_source(struct hl_device *hdev, u32 irq_status) 21 { 22 const char *format = "abnormal interrupt source:%s%s%s%s%s%s\n"; 23 char *intr_source[6] = {"Unknown", "", "", "", "", ""}; 24 int i = 0; 25 26 if (!irq_status) 27 return; 28 29 if (irq_status & VCMD_IRQ_STATUS_ENDCMD_MASK) 30 intr_source[i++] = " ENDCMD"; 31 if (irq_status & VCMD_IRQ_STATUS_BUSERR_MASK) 32 intr_source[i++] = " BUSERR"; 33 if (irq_status & VCMD_IRQ_STATUS_TIMEOUT_MASK) 34 intr_source[i++] = " TIMEOUT"; 35 if (irq_status & VCMD_IRQ_STATUS_CMDERR_MASK) 36 intr_source[i++] = " CMDERR"; 37 if (irq_status & VCMD_IRQ_STATUS_ABORT_MASK) 38 intr_source[i++] = " ABORT"; 39 if (irq_status & VCMD_IRQ_STATUS_RESET_MASK) 40 intr_source[i++] = " RESET"; 41 42 dev_err(hdev->dev, format, intr_source[0], intr_source[1], 43 intr_source[2], intr_source[3], intr_source[4], intr_source[5]); 44 } 45 46 static void dec_error_intr_work(struct hl_device *hdev, u32 base_addr, u32 core_id) 47 { 48 bool reset_required = false; 49 u32 irq_status; 50 51 irq_status = RREG32(base_addr + VCMD_IRQ_STATUS_OFFSET); 52 53 dev_err(hdev->dev, "Decoder abnormal interrupt %#x, core %d\n", irq_status, core_id); 54 55 dec_print_abnrm_intr_source(hdev, irq_status); 56 57 if (irq_status & VCMD_IRQ_STATUS_TIMEOUT_MASK) 58 reset_required = true; 59 60 /* Clear the interrupt */ 61 WREG32(base_addr + VCMD_IRQ_STATUS_OFFSET, irq_status); 62 63 /* Flush the interrupt clear */ 64 RREG32(base_addr + VCMD_IRQ_STATUS_OFFSET); 65 66 if (reset_required) 67 hl_device_reset(hdev, HL_DRV_RESET_HARD); 68 } 69 70 static void dec_completion_abnrm(struct work_struct *work) 71 { 72 struct hl_dec *dec = container_of(work, struct hl_dec, completion_abnrm_work); 73 struct hl_device *hdev = dec->hdev; 74 75 dec_error_intr_work(hdev, dec->base_addr, dec->core_id); 76 } 77 78 void hl_dec_fini(struct hl_device *hdev) 79 { 80 kfree(hdev->dec); 81 } 82 83 int hl_dec_init(struct hl_device *hdev) 84 { 85 struct asic_fixed_properties *prop = &hdev->asic_prop; 86 struct hl_dec *dec; 87 int rc, j; 88 89 /* if max core is 0, nothing to do*/ 90 if (!prop->max_dec) 91 return 0; 92 93 hdev->dec = kcalloc(prop->max_dec, sizeof(struct hl_dec), GFP_KERNEL); 94 if (!hdev->dec) 95 return -ENOMEM; 96 97 for (j = 0 ; j < prop->max_dec ; j++) { 98 dec = hdev->dec + j; 99 100 dec->hdev = hdev; 101 INIT_WORK(&dec->completion_abnrm_work, dec_completion_abnrm); 102 dec->core_id = j; 103 dec->base_addr = hdev->asic_funcs->get_dec_base_addr(hdev, j); 104 if (!dec->base_addr) { 105 dev_err(hdev->dev, "Invalid base address of decoder %d\n", j); 106 rc = -EINVAL; 107 goto err_dec_fini; 108 } 109 } 110 111 return 0; 112 113 err_dec_fini: 114 hl_dec_fini(hdev); 115 116 return rc; 117 } 118 119 void hl_dec_ctx_fini(struct hl_ctx *ctx) 120 { 121 struct hl_device *hdev = ctx->hdev; 122 struct asic_fixed_properties *prop = &hdev->asic_prop; 123 struct hl_dec *dec; 124 int j; 125 126 for (j = 0 ; j < prop->max_dec ; j++) { 127 if (!!(prop->decoder_enabled_mask & BIT(j))) { 128 dec = hdev->dec + j; 129 /* Stop the decoder */ 130 WREG32(dec->base_addr + VCMD_CONTROL_OFFSET, 0); 131 } 132 } 133 } 134