1 /* 2 * sata_uli.c - ULi Electronics SATA 3 * 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, or (at your option) 8 * any later version. 9 * 10 * This program is distributed in the hope that it will be useful, 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 * GNU General Public License for more details. 14 * 15 * You should have received a copy of the GNU General Public License 16 * along with this program; see the file COPYING. If not, write to 17 * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. 18 * 19 * 20 * libata documentation is available via 'make {ps|pdf}docs', 21 * as Documentation/DocBook/libata.* 22 * 23 * Hardware documentation available under NDA. 24 * 25 */ 26 27 #include <linux/kernel.h> 28 #include <linux/module.h> 29 #include <linux/pci.h> 30 #include <linux/init.h> 31 #include <linux/blkdev.h> 32 #include <linux/delay.h> 33 #include <linux/interrupt.h> 34 #include <linux/device.h> 35 #include <scsi/scsi_host.h> 36 #include <linux/libata.h> 37 38 #define DRV_NAME "sata_uli" 39 #define DRV_VERSION "1.0" 40 41 enum { 42 uli_5289 = 0, 43 uli_5287 = 1, 44 uli_5281 = 2, 45 46 uli_max_ports = 4, 47 48 /* PCI configuration registers */ 49 ULI5287_BASE = 0x90, /* sata0 phy SCR registers */ 50 ULI5287_OFFS = 0x10, /* offset from sata0->sata1 phy regs */ 51 ULI5281_BASE = 0x60, /* sata0 phy SCR registers */ 52 ULI5281_OFFS = 0x60, /* offset from sata0->sata1 phy regs */ 53 }; 54 55 struct uli_priv { 56 unsigned int scr_cfg_addr[uli_max_ports]; 57 }; 58 59 static int uli_init_one (struct pci_dev *pdev, const struct pci_device_id *ent); 60 static u32 uli_scr_read (struct ata_port *ap, unsigned int sc_reg); 61 static void uli_scr_write (struct ata_port *ap, unsigned int sc_reg, u32 val); 62 63 static const struct pci_device_id uli_pci_tbl[] = { 64 { PCI_VDEVICE(AL, 0x5289), uli_5289 }, 65 { PCI_VDEVICE(AL, 0x5287), uli_5287 }, 66 { PCI_VDEVICE(AL, 0x5281), uli_5281 }, 67 68 { } /* terminate list */ 69 }; 70 71 static struct pci_driver uli_pci_driver = { 72 .name = DRV_NAME, 73 .id_table = uli_pci_tbl, 74 .probe = uli_init_one, 75 .remove = ata_pci_remove_one, 76 }; 77 78 static struct scsi_host_template uli_sht = { 79 .module = THIS_MODULE, 80 .name = DRV_NAME, 81 .ioctl = ata_scsi_ioctl, 82 .queuecommand = ata_scsi_queuecmd, 83 .can_queue = ATA_DEF_QUEUE, 84 .this_id = ATA_SHT_THIS_ID, 85 .sg_tablesize = LIBATA_MAX_PRD, 86 .cmd_per_lun = ATA_SHT_CMD_PER_LUN, 87 .emulated = ATA_SHT_EMULATED, 88 .use_clustering = ATA_SHT_USE_CLUSTERING, 89 .proc_name = DRV_NAME, 90 .dma_boundary = ATA_DMA_BOUNDARY, 91 .slave_configure = ata_scsi_slave_config, 92 .slave_destroy = ata_scsi_slave_destroy, 93 .bios_param = ata_std_bios_param, 94 }; 95 96 static const struct ata_port_operations uli_ops = { 97 .port_disable = ata_port_disable, 98 99 .tf_load = ata_tf_load, 100 .tf_read = ata_tf_read, 101 .check_status = ata_check_status, 102 .exec_command = ata_exec_command, 103 .dev_select = ata_std_dev_select, 104 105 .bmdma_setup = ata_bmdma_setup, 106 .bmdma_start = ata_bmdma_start, 107 .bmdma_stop = ata_bmdma_stop, 108 .bmdma_status = ata_bmdma_status, 109 .qc_prep = ata_qc_prep, 110 .qc_issue = ata_qc_issue_prot, 111 .data_xfer = ata_pio_data_xfer, 112 113 .freeze = ata_bmdma_freeze, 114 .thaw = ata_bmdma_thaw, 115 .error_handler = ata_bmdma_error_handler, 116 .post_internal_cmd = ata_bmdma_post_internal_cmd, 117 118 .irq_handler = ata_interrupt, 119 .irq_clear = ata_bmdma_irq_clear, 120 121 .scr_read = uli_scr_read, 122 .scr_write = uli_scr_write, 123 124 .port_start = ata_port_start, 125 .port_stop = ata_port_stop, 126 .host_stop = ata_host_stop, 127 }; 128 129 static struct ata_port_info uli_port_info = { 130 .sht = &uli_sht, 131 .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY | 132 ATA_FLAG_IGN_SIMPLEX, 133 .pio_mask = 0x1f, /* pio0-4 */ 134 .udma_mask = 0x7f, /* udma0-6 */ 135 .port_ops = &uli_ops, 136 }; 137 138 139 MODULE_AUTHOR("Peer Chen"); 140 MODULE_DESCRIPTION("low-level driver for ULi Electronics SATA controller"); 141 MODULE_LICENSE("GPL"); 142 MODULE_DEVICE_TABLE(pci, uli_pci_tbl); 143 MODULE_VERSION(DRV_VERSION); 144 145 static unsigned int get_scr_cfg_addr(struct ata_port *ap, unsigned int sc_reg) 146 { 147 struct uli_priv *hpriv = ap->host->private_data; 148 return hpriv->scr_cfg_addr[ap->port_no] + (4 * sc_reg); 149 } 150 151 static u32 uli_scr_cfg_read (struct ata_port *ap, unsigned int sc_reg) 152 { 153 struct pci_dev *pdev = to_pci_dev(ap->host->dev); 154 unsigned int cfg_addr = get_scr_cfg_addr(ap, sc_reg); 155 u32 val; 156 157 pci_read_config_dword(pdev, cfg_addr, &val); 158 return val; 159 } 160 161 static void uli_scr_cfg_write (struct ata_port *ap, unsigned int scr, u32 val) 162 { 163 struct pci_dev *pdev = to_pci_dev(ap->host->dev); 164 unsigned int cfg_addr = get_scr_cfg_addr(ap, scr); 165 166 pci_write_config_dword(pdev, cfg_addr, val); 167 } 168 169 static u32 uli_scr_read (struct ata_port *ap, unsigned int sc_reg) 170 { 171 if (sc_reg > SCR_CONTROL) 172 return 0xffffffffU; 173 174 return uli_scr_cfg_read(ap, sc_reg); 175 } 176 177 static void uli_scr_write (struct ata_port *ap, unsigned int sc_reg, u32 val) 178 { 179 if (sc_reg > SCR_CONTROL) //SCR_CONTROL=2, SCR_ERROR=1, SCR_STATUS=0 180 return; 181 182 uli_scr_cfg_write(ap, sc_reg, val); 183 } 184 185 static int uli_init_one (struct pci_dev *pdev, const struct pci_device_id *ent) 186 { 187 static int printed_version; 188 struct ata_probe_ent *probe_ent; 189 struct ata_port_info *ppi[2]; 190 int rc; 191 unsigned int board_idx = (unsigned int) ent->driver_data; 192 int pci_dev_busy = 0; 193 struct uli_priv *hpriv; 194 195 if (!printed_version++) 196 dev_printk(KERN_INFO, &pdev->dev, "version " DRV_VERSION "\n"); 197 198 rc = pci_enable_device(pdev); 199 if (rc) 200 return rc; 201 202 rc = pci_request_regions(pdev, DRV_NAME); 203 if (rc) { 204 pci_dev_busy = 1; 205 goto err_out; 206 } 207 208 rc = pci_set_dma_mask(pdev, ATA_DMA_MASK); 209 if (rc) 210 goto err_out_regions; 211 rc = pci_set_consistent_dma_mask(pdev, ATA_DMA_MASK); 212 if (rc) 213 goto err_out_regions; 214 215 ppi[0] = ppi[1] = &uli_port_info; 216 probe_ent = ata_pci_init_native_mode(pdev, ppi, ATA_PORT_PRIMARY | ATA_PORT_SECONDARY); 217 if (!probe_ent) { 218 rc = -ENOMEM; 219 goto err_out_regions; 220 } 221 222 hpriv = kzalloc(sizeof(*hpriv), GFP_KERNEL); 223 if (!hpriv) { 224 rc = -ENOMEM; 225 goto err_out_probe_ent; 226 } 227 228 probe_ent->private_data = hpriv; 229 230 switch (board_idx) { 231 case uli_5287: 232 hpriv->scr_cfg_addr[0] = ULI5287_BASE; 233 hpriv->scr_cfg_addr[1] = ULI5287_BASE + ULI5287_OFFS; 234 probe_ent->n_ports = 4; 235 236 probe_ent->port[2].cmd_addr = pci_resource_start(pdev, 0) + 8; 237 probe_ent->port[2].altstatus_addr = 238 probe_ent->port[2].ctl_addr = 239 (pci_resource_start(pdev, 1) | ATA_PCI_CTL_OFS) + 4; 240 probe_ent->port[2].bmdma_addr = pci_resource_start(pdev, 4) + 16; 241 hpriv->scr_cfg_addr[2] = ULI5287_BASE + ULI5287_OFFS*4; 242 243 probe_ent->port[3].cmd_addr = pci_resource_start(pdev, 2) + 8; 244 probe_ent->port[3].altstatus_addr = 245 probe_ent->port[3].ctl_addr = 246 (pci_resource_start(pdev, 3) | ATA_PCI_CTL_OFS) + 4; 247 probe_ent->port[3].bmdma_addr = pci_resource_start(pdev, 4) + 24; 248 hpriv->scr_cfg_addr[3] = ULI5287_BASE + ULI5287_OFFS*5; 249 250 ata_std_ports(&probe_ent->port[2]); 251 ata_std_ports(&probe_ent->port[3]); 252 break; 253 254 case uli_5289: 255 hpriv->scr_cfg_addr[0] = ULI5287_BASE; 256 hpriv->scr_cfg_addr[1] = ULI5287_BASE + ULI5287_OFFS; 257 break; 258 259 case uli_5281: 260 hpriv->scr_cfg_addr[0] = ULI5281_BASE; 261 hpriv->scr_cfg_addr[1] = ULI5281_BASE + ULI5281_OFFS; 262 break; 263 264 default: 265 BUG(); 266 break; 267 } 268 269 pci_set_master(pdev); 270 pci_intx(pdev, 1); 271 272 /* FIXME: check ata_device_add return value */ 273 ata_device_add(probe_ent); 274 kfree(probe_ent); 275 276 return 0; 277 278 err_out_probe_ent: 279 kfree(probe_ent); 280 err_out_regions: 281 pci_release_regions(pdev); 282 err_out: 283 if (!pci_dev_busy) 284 pci_disable_device(pdev); 285 return rc; 286 287 } 288 289 static int __init uli_init(void) 290 { 291 return pci_register_driver(&uli_pci_driver); 292 } 293 294 static void __exit uli_exit(void) 295 { 296 pci_unregister_driver(&uli_pci_driver); 297 } 298 299 300 module_init(uli_init); 301 module_exit(uli_exit); 302