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 "ionic.h" 6 7 static int 8 ionic_dev_cmd_wait(struct ionic_dev *idev, unsigned long max_wait) 9 { 10 unsigned long step_msec = 100; 11 unsigned int max_wait_msec = max_wait * 1000; 12 unsigned long elapsed_msec = 0; 13 int done; 14 15 /* Wait for dev cmd to complete.. but no more than max_wait sec */ 16 17 do { 18 done = ionic_dev_cmd_done(idev); 19 if (done) { 20 IONIC_PRINT(DEBUG, "DEVCMD %d done took %ld msecs", 21 idev->dev_cmd->cmd.cmd.opcode, 22 elapsed_msec); 23 return 0; 24 } 25 26 msec_delay(step_msec); 27 28 elapsed_msec += step_msec; 29 } while (elapsed_msec < max_wait_msec); 30 31 IONIC_PRINT(DEBUG, "DEVCMD %d timeout after %ld msecs", 32 idev->dev_cmd->cmd.cmd.opcode, 33 elapsed_msec); 34 35 return -ETIMEDOUT; 36 } 37 38 static int 39 ionic_dev_cmd_check_error(struct ionic_dev *idev) 40 { 41 uint8_t status; 42 43 status = ionic_dev_cmd_status(idev); 44 if (status == 0) 45 return 0; 46 47 return -EIO; 48 } 49 50 int 51 ionic_dev_cmd_wait_check(struct ionic_dev *idev, unsigned long max_wait) 52 { 53 int err; 54 55 err = ionic_dev_cmd_wait(idev, max_wait); 56 if (err) 57 return err; 58 59 return ionic_dev_cmd_check_error(idev); 60 } 61 62 int 63 ionic_setup(struct ionic_adapter *adapter) 64 { 65 return ionic_dev_setup(adapter); 66 } 67 68 int 69 ionic_identify(struct ionic_adapter *adapter) 70 { 71 struct ionic_dev *idev = &adapter->idev; 72 struct ionic_identity *ident = &adapter->ident; 73 int err = 0; 74 uint32_t i; 75 unsigned int nwords; 76 uint32_t drv_size = sizeof(ident->drv.words) / 77 sizeof(ident->drv.words[0]); 78 uint32_t cmd_size = sizeof(idev->dev_cmd->data) / 79 sizeof(idev->dev_cmd->data[0]); 80 uint32_t dev_size = sizeof(ident->dev.words) / 81 sizeof(ident->dev.words[0]); 82 83 memset(ident, 0, sizeof(*ident)); 84 85 ident->drv.os_type = IONIC_OS_TYPE_LINUX; 86 ident->drv.os_dist = 0; 87 snprintf(ident->drv.os_dist_str, 88 sizeof(ident->drv.os_dist_str), "Unknown"); 89 ident->drv.kernel_ver = 0; 90 snprintf(ident->drv.kernel_ver_str, 91 sizeof(ident->drv.kernel_ver_str), "DPDK"); 92 strncpy(ident->drv.driver_ver_str, IONIC_DRV_VERSION, 93 sizeof(ident->drv.driver_ver_str) - 1); 94 95 nwords = RTE_MIN(drv_size, cmd_size); 96 for (i = 0; i < nwords; i++) 97 iowrite32(ident->drv.words[i], &idev->dev_cmd->data[i]); 98 99 ionic_dev_cmd_identify(idev, IONIC_IDENTITY_VERSION_1); 100 err = ionic_dev_cmd_wait_check(idev, IONIC_DEVCMD_TIMEOUT); 101 if (!err) { 102 nwords = RTE_MIN(dev_size, cmd_size); 103 for (i = 0; i < nwords; i++) 104 ident->dev.words[i] = ioread32(&idev->dev_cmd->data[i]); 105 } 106 107 return err; 108 } 109 110 int 111 ionic_init(struct ionic_adapter *adapter) 112 { 113 struct ionic_dev *idev = &adapter->idev; 114 int err; 115 116 ionic_dev_cmd_init(idev); 117 err = ionic_dev_cmd_wait_check(idev, IONIC_DEVCMD_TIMEOUT); 118 return err; 119 } 120 121 int 122 ionic_reset(struct ionic_adapter *adapter) 123 { 124 struct ionic_dev *idev = &adapter->idev; 125 int err; 126 127 ionic_dev_cmd_reset(idev); 128 err = ionic_dev_cmd_wait_check(idev, IONIC_DEVCMD_TIMEOUT); 129 return err; 130 } 131