John Garry | e8899fa | 2015-11-18 00:50:30 +0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2015 Linaro Ltd. |
| 3 | * Copyright (c) 2015 Hisilicon Limited. |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify |
| 6 | * it under the terms of the GNU General Public License as published by |
| 7 | * the Free Software Foundation; either version 2 of the License, or |
| 8 | * (at your option) any later version. |
| 9 | * |
| 10 | */ |
| 11 | |
| 12 | #include "hisi_sas.h" |
| 13 | #define DRV_NAME "hisi_sas" |
| 14 | |
| 15 | static struct scsi_transport_template *hisi_sas_stt; |
| 16 | |
John Garry | 7eb7869 | 2015-11-18 00:50:31 +0800 | [diff] [blame^] | 17 | static struct scsi_host_template hisi_sas_sht = { |
| 18 | .module = THIS_MODULE, |
| 19 | .name = DRV_NAME, |
| 20 | .queuecommand = sas_queuecommand, |
| 21 | .target_alloc = sas_target_alloc, |
| 22 | .slave_configure = sas_slave_configure, |
| 23 | .change_queue_depth = sas_change_queue_depth, |
| 24 | .bios_param = sas_bios_param, |
| 25 | .can_queue = 1, |
| 26 | .this_id = -1, |
| 27 | .sg_tablesize = SG_ALL, |
| 28 | .max_sectors = SCSI_DEFAULT_MAX_SECTORS, |
| 29 | .use_clustering = ENABLE_CLUSTERING, |
| 30 | .eh_device_reset_handler = sas_eh_device_reset_handler, |
| 31 | .eh_bus_reset_handler = sas_eh_bus_reset_handler, |
| 32 | .target_destroy = sas_target_destroy, |
| 33 | .ioctl = sas_ioctl, |
| 34 | }; |
| 35 | |
John Garry | e8899fa | 2015-11-18 00:50:30 +0800 | [diff] [blame] | 36 | static struct sas_domain_function_template hisi_sas_transport_ops = { |
| 37 | }; |
| 38 | |
John Garry | 7eb7869 | 2015-11-18 00:50:31 +0800 | [diff] [blame^] | 39 | static struct Scsi_Host *hisi_sas_shost_alloc(struct platform_device *pdev, |
| 40 | const struct hisi_sas_hw *hw) |
| 41 | { |
| 42 | struct Scsi_Host *shost; |
| 43 | struct hisi_hba *hisi_hba; |
| 44 | struct device *dev = &pdev->dev; |
| 45 | |
| 46 | shost = scsi_host_alloc(&hisi_sas_sht, sizeof(*hisi_hba)); |
| 47 | if (!shost) |
| 48 | goto err_out; |
| 49 | hisi_hba = shost_priv(shost); |
| 50 | |
| 51 | hisi_hba->hw = hw; |
| 52 | hisi_hba->pdev = pdev; |
| 53 | hisi_hba->shost = shost; |
| 54 | SHOST_TO_SAS_HA(shost) = &hisi_hba->sha; |
| 55 | |
| 56 | return shost; |
| 57 | err_out: |
| 58 | dev_err(dev, "shost alloc failed\n"); |
| 59 | return NULL; |
| 60 | } |
| 61 | |
| 62 | int hisi_sas_probe(struct platform_device *pdev, |
| 63 | const struct hisi_sas_hw *hw) |
| 64 | { |
| 65 | struct Scsi_Host *shost; |
| 66 | struct hisi_hba *hisi_hba; |
| 67 | struct device *dev = &pdev->dev; |
| 68 | struct asd_sas_phy **arr_phy; |
| 69 | struct asd_sas_port **arr_port; |
| 70 | struct sas_ha_struct *sha; |
| 71 | int rc, phy_nr, port_nr, i; |
| 72 | |
| 73 | shost = hisi_sas_shost_alloc(pdev, hw); |
| 74 | if (!shost) { |
| 75 | rc = -ENOMEM; |
| 76 | goto err_out_ha; |
| 77 | } |
| 78 | |
| 79 | sha = SHOST_TO_SAS_HA(shost); |
| 80 | hisi_hba = shost_priv(shost); |
| 81 | platform_set_drvdata(pdev, sha); |
| 82 | hisi_hba->n_phy = HISI_SAS_MAX_PHYS; |
| 83 | phy_nr = port_nr = hisi_hba->n_phy; |
| 84 | |
| 85 | arr_phy = devm_kcalloc(dev, phy_nr, sizeof(void *), GFP_KERNEL); |
| 86 | arr_port = devm_kcalloc(dev, port_nr, sizeof(void *), GFP_KERNEL); |
| 87 | if (!arr_phy || !arr_port) |
| 88 | return -ENOMEM; |
| 89 | |
| 90 | sha->sas_phy = arr_phy; |
| 91 | sha->sas_port = arr_port; |
| 92 | sha->core.shost = shost; |
| 93 | sha->lldd_ha = hisi_hba; |
| 94 | |
| 95 | shost->transportt = hisi_sas_stt; |
| 96 | shost->max_id = HISI_SAS_MAX_DEVICES; |
| 97 | shost->max_lun = ~0; |
| 98 | shost->max_channel = 1; |
| 99 | shost->max_cmd_len = 16; |
| 100 | shost->sg_tablesize = min_t(u16, SG_ALL, HISI_SAS_SGE_PAGE_CNT); |
| 101 | shost->can_queue = HISI_SAS_COMMAND_ENTRIES; |
| 102 | shost->cmd_per_lun = HISI_SAS_COMMAND_ENTRIES; |
| 103 | |
| 104 | sha->sas_ha_name = DRV_NAME; |
| 105 | sha->dev = &hisi_hba->pdev->dev; |
| 106 | sha->lldd_module = THIS_MODULE; |
| 107 | sha->sas_addr = &hisi_hba->sas_addr[0]; |
| 108 | sha->num_phys = hisi_hba->n_phy; |
| 109 | sha->core.shost = hisi_hba->shost; |
| 110 | |
| 111 | for (i = 0; i < hisi_hba->n_phy; i++) { |
| 112 | sha->sas_phy[i] = &hisi_hba->phy[i].sas_phy; |
| 113 | sha->sas_port[i] = &hisi_hba->port[i].sas_port; |
| 114 | } |
| 115 | |
| 116 | rc = scsi_add_host(shost, &pdev->dev); |
| 117 | if (rc) |
| 118 | goto err_out_ha; |
| 119 | |
| 120 | rc = sas_register_ha(sha); |
| 121 | if (rc) |
| 122 | goto err_out_register_ha; |
| 123 | |
| 124 | scsi_scan_host(shost); |
| 125 | |
| 126 | return 0; |
| 127 | |
| 128 | err_out_register_ha: |
| 129 | scsi_remove_host(shost); |
| 130 | err_out_ha: |
| 131 | kfree(shost); |
| 132 | return rc; |
| 133 | } |
| 134 | EXPORT_SYMBOL_GPL(hisi_sas_probe); |
| 135 | |
John Garry | e8899fa | 2015-11-18 00:50:30 +0800 | [diff] [blame] | 136 | static __init int hisi_sas_init(void) |
| 137 | { |
| 138 | pr_info("hisi_sas: driver version %s\n", DRV_VERSION); |
| 139 | |
| 140 | hisi_sas_stt = sas_domain_attach_transport(&hisi_sas_transport_ops); |
| 141 | if (!hisi_sas_stt) |
| 142 | return -ENOMEM; |
| 143 | |
| 144 | return 0; |
| 145 | } |
| 146 | |
| 147 | static __exit void hisi_sas_exit(void) |
| 148 | { |
| 149 | sas_release_transport(hisi_sas_stt); |
| 150 | } |
| 151 | |
| 152 | module_init(hisi_sas_init); |
| 153 | module_exit(hisi_sas_exit); |
| 154 | |
| 155 | MODULE_VERSION(DRV_VERSION); |
| 156 | MODULE_LICENSE("GPL"); |
| 157 | MODULE_AUTHOR("John Garry <john.garry@huawei.com>"); |
| 158 | MODULE_DESCRIPTION("HISILICON SAS controller driver"); |
| 159 | MODULE_ALIAS("platform:" DRV_NAME); |