1 /* SPDX-License-Identifier: (BSD-3-Clause OR GPL-2.0) 2 * Copyright(c) 2018-2019 Pensando Systems, Inc. All rights reserved. 3 */ 4 5 #include <rte_malloc.h> 6 7 #include "ionic_dev.h" 8 #include "ionic.h" 9 10 int 11 ionic_dev_setup(struct ionic_adapter *adapter) 12 { 13 struct ionic_dev_bar *bar = adapter->bars; 14 unsigned int num_bars = adapter->num_bars; 15 struct ionic_dev *idev = &adapter->idev; 16 uint32_t sig; 17 u_char *bar0_base; 18 19 /* BAR0: dev_cmd and interrupts */ 20 if (num_bars < 1) { 21 IONIC_PRINT(ERR, "No bars found, aborting"); 22 return -EFAULT; 23 } 24 25 if (bar->len < IONIC_BAR0_SIZE) { 26 IONIC_PRINT(ERR, 27 "Resource bar size %lu too small, aborting", 28 bar->len); 29 return -EFAULT; 30 } 31 32 bar0_base = bar->vaddr; 33 idev->dev_info = (union ionic_dev_info_regs *) 34 &bar0_base[IONIC_BAR0_DEV_INFO_REGS_OFFSET]; 35 idev->dev_cmd = (union ionic_dev_cmd_regs *) 36 &bar0_base[IONIC_BAR0_DEV_CMD_REGS_OFFSET]; 37 idev->intr_status = (struct ionic_intr_status *) 38 &bar0_base[IONIC_BAR0_INTR_STATUS_OFFSET]; 39 idev->intr_ctrl = (struct ionic_intr *) 40 &bar0_base[IONIC_BAR0_INTR_CTRL_OFFSET]; 41 42 sig = ioread32(&idev->dev_info->signature); 43 if (sig != IONIC_DEV_INFO_SIGNATURE) { 44 IONIC_PRINT(ERR, "Incompatible firmware signature %" PRIx32 "", 45 sig); 46 return -EFAULT; 47 } 48 49 /* BAR1: doorbells */ 50 bar++; 51 if (num_bars < 2) { 52 IONIC_PRINT(ERR, "Doorbell bar missing, aborting"); 53 return -EFAULT; 54 } 55 56 idev->db_pages = bar->vaddr; 57 idev->phy_db_pages = bar->bus_addr; 58 59 return 0; 60 } 61 62 /* Devcmd Interface */ 63 64 uint8_t 65 ionic_dev_cmd_status(struct ionic_dev *idev) 66 { 67 return ioread8(&idev->dev_cmd->comp.comp.status); 68 } 69 70 bool 71 ionic_dev_cmd_done(struct ionic_dev *idev) 72 { 73 return ioread32(&idev->dev_cmd->done) & IONIC_DEV_CMD_DONE; 74 } 75 76 void 77 ionic_dev_cmd_comp(struct ionic_dev *idev, void *mem) 78 { 79 union ionic_dev_cmd_comp *comp = mem; 80 unsigned int i; 81 uint32_t comp_size = sizeof(comp->words) / 82 sizeof(comp->words[0]); 83 84 for (i = 0; i < comp_size; i++) 85 comp->words[i] = ioread32(&idev->dev_cmd->comp.words[i]); 86 } 87 88 void 89 ionic_dev_cmd_go(struct ionic_dev *idev, union ionic_dev_cmd *cmd) 90 { 91 unsigned int i; 92 uint32_t cmd_size = sizeof(cmd->words) / 93 sizeof(cmd->words[0]); 94 95 for (i = 0; i < cmd_size; i++) 96 iowrite32(cmd->words[i], &idev->dev_cmd->cmd.words[i]); 97 98 iowrite32(0, &idev->dev_cmd->done); 99 iowrite32(1, &idev->dev_cmd->doorbell); 100 } 101 102 /* Device commands */ 103 104 void 105 ionic_dev_cmd_identify(struct ionic_dev *idev, uint8_t ver) 106 { 107 union ionic_dev_cmd cmd = { 108 .identify.opcode = IONIC_CMD_IDENTIFY, 109 .identify.ver = ver, 110 }; 111 112 ionic_dev_cmd_go(idev, &cmd); 113 } 114 115 void 116 ionic_dev_cmd_init(struct ionic_dev *idev) 117 { 118 union ionic_dev_cmd cmd = { 119 .init.opcode = IONIC_CMD_INIT, 120 .init.type = 0, 121 }; 122 123 ionic_dev_cmd_go(idev, &cmd); 124 } 125 126 void 127 ionic_dev_cmd_reset(struct ionic_dev *idev) 128 { 129 union ionic_dev_cmd cmd = { 130 .reset.opcode = IONIC_CMD_RESET, 131 }; 132 133 ionic_dev_cmd_go(idev, &cmd); 134 } 135