1 /* 2 * Marvell PATA driver. 3 * 4 * For the moment we drive the PATA port in legacy mode. That 5 * isn't making full use of the device functionality but it is 6 * easy to get working. 7 * 8 * (c) 2006 Red Hat <alan@redhat.com> 9 */ 10 11 #include <linux/kernel.h> 12 #include <linux/module.h> 13 #include <linux/pci.h> 14 #include <linux/init.h> 15 #include <linux/blkdev.h> 16 #include <linux/delay.h> 17 #include <linux/device.h> 18 #include <scsi/scsi_host.h> 19 #include <linux/libata.h> 20 #include <linux/ata.h> 21 22 #define DRV_NAME "pata_marvell" 23 #define DRV_VERSION "0.1.4" 24 25 /** 26 * marvell_pre_reset - check for 40/80 pin 27 * @link: link 28 * @deadline: deadline jiffies for the operation 29 * 30 * Perform the PATA port setup we need. 31 */ 32 33 static int marvell_pre_reset(struct ata_link *link, unsigned long deadline) 34 { 35 struct ata_port *ap = link->ap; 36 struct pci_dev *pdev = to_pci_dev(ap->host->dev); 37 u32 devices; 38 void __iomem *barp; 39 int i; 40 41 /* Check if our port is enabled */ 42 43 barp = pci_iomap(pdev, 5, 0x10); 44 if (barp == NULL) 45 return -ENOMEM; 46 printk("BAR5:"); 47 for(i = 0; i <= 0x0F; i++) 48 printk("%02X:%02X ", i, ioread8(barp + i)); 49 printk("\n"); 50 51 devices = ioread32(barp + 0x0C); 52 pci_iounmap(pdev, barp); 53 54 if ((pdev->device == 0x6145) && (ap->port_no == 0) && 55 (!(devices & 0x10))) /* PATA enable ? */ 56 return -ENOENT; 57 58 return ata_std_prereset(link, deadline); 59 } 60 61 static int marvell_cable_detect(struct ata_port *ap) 62 { 63 /* Cable type */ 64 switch(ap->port_no) 65 { 66 case 0: 67 if (ioread8(ap->ioaddr.bmdma_addr + 1) & 1) 68 return ATA_CBL_PATA40; 69 return ATA_CBL_PATA80; 70 case 1: /* Legacy SATA port */ 71 return ATA_CBL_SATA; 72 } 73 74 BUG(); 75 return 0; /* Our BUG macro needs the right markup */ 76 } 77 78 /** 79 * marvell_error_handler - Setup and error handler 80 * @ap: Port to handle 81 * 82 * LOCKING: 83 * None (inherited from caller). 84 */ 85 86 static void marvell_error_handler(struct ata_port *ap) 87 { 88 ata_bmdma_drive_eh(ap, marvell_pre_reset, ata_std_softreset, NULL, 89 ata_std_postreset); 90 } 91 92 /* No PIO or DMA methods needed for this device */ 93 94 static struct scsi_host_template marvell_sht = { 95 .module = THIS_MODULE, 96 .name = DRV_NAME, 97 .ioctl = ata_scsi_ioctl, 98 .queuecommand = ata_scsi_queuecmd, 99 .can_queue = ATA_DEF_QUEUE, 100 .this_id = ATA_SHT_THIS_ID, 101 .sg_tablesize = LIBATA_MAX_PRD, 102 .cmd_per_lun = ATA_SHT_CMD_PER_LUN, 103 .emulated = ATA_SHT_EMULATED, 104 .use_clustering = ATA_SHT_USE_CLUSTERING, 105 .proc_name = DRV_NAME, 106 .dma_boundary = ATA_DMA_BOUNDARY, 107 .slave_configure = ata_scsi_slave_config, 108 .slave_destroy = ata_scsi_slave_destroy, 109 /* Use standard CHS mapping rules */ 110 .bios_param = ata_std_bios_param, 111 }; 112 113 static const struct ata_port_operations marvell_ops = { 114 /* Task file is PCI ATA format, use helpers */ 115 .tf_load = ata_tf_load, 116 .tf_read = ata_tf_read, 117 .check_status = ata_check_status, 118 .exec_command = ata_exec_command, 119 .dev_select = ata_std_dev_select, 120 121 .freeze = ata_bmdma_freeze, 122 .thaw = ata_bmdma_thaw, 123 .error_handler = marvell_error_handler, 124 .post_internal_cmd = ata_bmdma_post_internal_cmd, 125 .cable_detect = marvell_cable_detect, 126 127 /* BMDMA handling is PCI ATA format, use helpers */ 128 .bmdma_setup = ata_bmdma_setup, 129 .bmdma_start = ata_bmdma_start, 130 .bmdma_stop = ata_bmdma_stop, 131 .bmdma_status = ata_bmdma_status, 132 .qc_prep = ata_qc_prep, 133 .qc_issue = ata_qc_issue_prot, 134 .data_xfer = ata_data_xfer, 135 136 /* Timeout handling */ 137 .irq_handler = ata_interrupt, 138 .irq_clear = ata_bmdma_irq_clear, 139 .irq_on = ata_irq_on, 140 141 /* Generic PATA PCI ATA helpers */ 142 .port_start = ata_sff_port_start, 143 }; 144 145 146 /** 147 * marvell_init_one - Register Marvell ATA PCI device with kernel services 148 * @pdev: PCI device to register 149 * @ent: Entry in marvell_pci_tbl matching with @pdev 150 * 151 * Called from kernel PCI layer. 152 * 153 * LOCKING: 154 * Inherited from PCI layer (may sleep). 155 * 156 * RETURNS: 157 * Zero on success, or -ERRNO value. 158 */ 159 160 static int marvell_init_one (struct pci_dev *pdev, const struct pci_device_id *id) 161 { 162 static const struct ata_port_info info = { 163 .sht = &marvell_sht, 164 .flags = ATA_FLAG_SLAVE_POSS, 165 166 .pio_mask = 0x1f, 167 .mwdma_mask = 0x07, 168 .udma_mask = ATA_UDMA5, 169 170 .port_ops = &marvell_ops, 171 }; 172 static const struct ata_port_info info_sata = { 173 .sht = &marvell_sht, 174 /* Slave possible as its magically mapped not real */ 175 .flags = ATA_FLAG_SLAVE_POSS, 176 177 .pio_mask = 0x1f, 178 .mwdma_mask = 0x07, 179 .udma_mask = ATA_UDMA6, 180 181 .port_ops = &marvell_ops, 182 }; 183 const struct ata_port_info *ppi[] = { &info, &info_sata }; 184 185 if (pdev->device == 0x6101) 186 ppi[1] = &ata_dummy_port_info; 187 188 return ata_pci_init_one(pdev, ppi); 189 } 190 191 static const struct pci_device_id marvell_pci_tbl[] = { 192 { PCI_DEVICE(0x11AB, 0x6101), }, 193 { PCI_DEVICE(0x11AB, 0x6121), }, 194 { PCI_DEVICE(0x11AB, 0x6123), }, 195 { PCI_DEVICE(0x11AB, 0x6145), }, 196 { } /* terminate list */ 197 }; 198 199 static struct pci_driver marvell_pci_driver = { 200 .name = DRV_NAME, 201 .id_table = marvell_pci_tbl, 202 .probe = marvell_init_one, 203 .remove = ata_pci_remove_one, 204 #ifdef CONFIG_PM 205 .suspend = ata_pci_device_suspend, 206 .resume = ata_pci_device_resume, 207 #endif 208 }; 209 210 static int __init marvell_init(void) 211 { 212 return pci_register_driver(&marvell_pci_driver); 213 } 214 215 static void __exit marvell_exit(void) 216 { 217 pci_unregister_driver(&marvell_pci_driver); 218 } 219 220 module_init(marvell_init); 221 module_exit(marvell_exit); 222 223 MODULE_AUTHOR("Alan Cox"); 224 MODULE_DESCRIPTION("SCSI low-level driver for Marvell ATA in legacy mode"); 225 MODULE_LICENSE("GPL"); 226 MODULE_DEVICE_TABLE(pci, marvell_pci_tbl); 227 MODULE_VERSION(DRV_VERSION); 228 229