1 /* 2 * pata_hpt3x3 - HPT3x3 driver 3 * (c) Copyright 2005-2006 Red Hat 4 * 5 * Was pata_hpt34x but the naming was confusing as it supported the 6 * 343 and 363 so it has been renamed. 7 * 8 * Based on: 9 * linux/drivers/ide/pci/hpt34x.c Version 0.40 Sept 10, 2002 10 * Copyright (C) 1998-2000 Andre Hedrick <andre@linux-ide.org> 11 * 12 * May be copied or modified under the terms of the GNU General Public 13 * License 14 */ 15 16 #include <linux/kernel.h> 17 #include <linux/module.h> 18 #include <linux/pci.h> 19 #include <linux/init.h> 20 #include <linux/blkdev.h> 21 #include <linux/delay.h> 22 #include <scsi/scsi_host.h> 23 #include <linux/libata.h> 24 25 #define DRV_NAME "pata_hpt3x3" 26 #define DRV_VERSION "0.4.2" 27 28 static int hpt3x3_probe_init(struct ata_port *ap) 29 { 30 ap->cbl = ATA_CBL_PATA40; 31 return ata_std_prereset(ap); 32 } 33 34 /** 35 * hpt3x3_probe_reset - reset the hpt3x3 bus 36 * @ap: ATA port to reset 37 * 38 * Perform the housekeeping when doing an ATA bus reeset. We just 39 * need to force the cable type. 40 */ 41 42 static void hpt3x3_error_handler(struct ata_port *ap) 43 { 44 return ata_bmdma_drive_eh(ap, hpt3x3_probe_init, ata_std_softreset, NULL, ata_std_postreset); 45 } 46 47 /** 48 * hpt3x3_set_piomode - PIO setup 49 * @ap: ATA interface 50 * @adev: device on the interface 51 * 52 * Set our PIO requirements. This is fairly simple on the HPT3x3 as 53 * all we have to do is clear the MWDMA and UDMA bits then load the 54 * mode number. 55 */ 56 57 static void hpt3x3_set_piomode(struct ata_port *ap, struct ata_device *adev) 58 { 59 struct pci_dev *pdev = to_pci_dev(ap->host->dev); 60 u32 r1, r2; 61 int dn = 2 * ap->port_no + adev->devno; 62 63 pci_read_config_dword(pdev, 0x44, &r1); 64 pci_read_config_dword(pdev, 0x48, &r2); 65 /* Load the PIO timing number */ 66 r1 &= ~(7 << (3 * dn)); 67 r1 |= (adev->pio_mode - XFER_PIO_0) << (3 * dn); 68 r2 &= ~(0x11 << dn); /* Clear MWDMA and UDMA bits */ 69 70 pci_write_config_dword(pdev, 0x44, r1); 71 pci_write_config_dword(pdev, 0x48, r2); 72 } 73 74 /** 75 * hpt3x3_set_dmamode - DMA timing setup 76 * @ap: ATA interface 77 * @adev: Device being configured 78 * 79 * Set up the channel for MWDMA or UDMA modes. Much the same as with 80 * PIO, load the mode number and then set MWDMA or UDMA flag. 81 */ 82 83 static void hpt3x3_set_dmamode(struct ata_port *ap, struct ata_device *adev) 84 { 85 struct pci_dev *pdev = to_pci_dev(ap->host->dev); 86 u32 r1, r2; 87 int dn = 2 * ap->port_no + adev->devno; 88 int mode_num = adev->dma_mode & 0x0F; 89 90 pci_read_config_dword(pdev, 0x44, &r1); 91 pci_read_config_dword(pdev, 0x48, &r2); 92 /* Load the timing number */ 93 r1 &= ~(7 << (3 * dn)); 94 r1 |= (mode_num << (3 * dn)); 95 r2 &= ~(0x11 << dn); /* Clear MWDMA and UDMA bits */ 96 97 if (adev->dma_mode >= XFER_UDMA_0) 98 r2 |= 0x01 << dn; /* Ultra mode */ 99 else 100 r2 |= 0x10 << dn; /* MWDMA */ 101 102 pci_write_config_dword(pdev, 0x44, r1); 103 pci_write_config_dword(pdev, 0x48, r2); 104 } 105 106 static struct scsi_host_template hpt3x3_sht = { 107 .module = THIS_MODULE, 108 .name = DRV_NAME, 109 .ioctl = ata_scsi_ioctl, 110 .queuecommand = ata_scsi_queuecmd, 111 .can_queue = ATA_DEF_QUEUE, 112 .this_id = ATA_SHT_THIS_ID, 113 .sg_tablesize = LIBATA_MAX_PRD, 114 .cmd_per_lun = ATA_SHT_CMD_PER_LUN, 115 .emulated = ATA_SHT_EMULATED, 116 .use_clustering = ATA_SHT_USE_CLUSTERING, 117 .proc_name = DRV_NAME, 118 .dma_boundary = ATA_DMA_BOUNDARY, 119 .slave_configure = ata_scsi_slave_config, 120 .slave_destroy = ata_scsi_slave_destroy, 121 .bios_param = ata_std_bios_param, 122 #ifdef CONFIG_PM 123 .resume = ata_scsi_device_resume, 124 .suspend = ata_scsi_device_suspend, 125 #endif 126 }; 127 128 static struct ata_port_operations hpt3x3_port_ops = { 129 .port_disable = ata_port_disable, 130 .set_piomode = hpt3x3_set_piomode, 131 .set_dmamode = hpt3x3_set_dmamode, 132 .mode_filter = ata_pci_default_filter, 133 134 .tf_load = ata_tf_load, 135 .tf_read = ata_tf_read, 136 .check_status = ata_check_status, 137 .exec_command = ata_exec_command, 138 .dev_select = ata_std_dev_select, 139 140 .freeze = ata_bmdma_freeze, 141 .thaw = ata_bmdma_thaw, 142 .error_handler = hpt3x3_error_handler, 143 .post_internal_cmd = ata_bmdma_post_internal_cmd, 144 145 .bmdma_setup = ata_bmdma_setup, 146 .bmdma_start = ata_bmdma_start, 147 .bmdma_stop = ata_bmdma_stop, 148 .bmdma_status = ata_bmdma_status, 149 150 .qc_prep = ata_qc_prep, 151 .qc_issue = ata_qc_issue_prot, 152 153 .data_xfer = ata_data_xfer, 154 155 .irq_handler = ata_interrupt, 156 .irq_clear = ata_bmdma_irq_clear, 157 .irq_on = ata_irq_on, 158 .irq_ack = ata_irq_ack, 159 160 .port_start = ata_port_start, 161 }; 162 163 /** 164 * hpt3x3_init_chipset - chip setup 165 * @dev: PCI device 166 * 167 * Perform the setup required at boot and on resume. 168 */ 169 170 static void hpt3x3_init_chipset(struct pci_dev *dev) 171 { 172 u16 cmd; 173 /* Initialize the board */ 174 pci_write_config_word(dev, 0x80, 0x00); 175 /* Check if it is a 343 or a 363. 363 has COMMAND_MEMORY set */ 176 pci_read_config_word(dev, PCI_COMMAND, &cmd); 177 if (cmd & PCI_COMMAND_MEMORY) 178 pci_write_config_byte(dev, PCI_LATENCY_TIMER, 0xF0); 179 else 180 pci_write_config_byte(dev, PCI_LATENCY_TIMER, 0x20); 181 } 182 183 184 /** 185 * hpt3x3_init_one - Initialise an HPT343/363 186 * @dev: PCI device 187 * @id: Entry in match table 188 * 189 * Perform basic initialisation. The chip has a quirk that it won't 190 * function unless it is at XX00. The old ATA driver touched this up 191 * but we leave it for pci quirks to do properly. 192 */ 193 194 static int hpt3x3_init_one(struct pci_dev *dev, const struct pci_device_id *id) 195 { 196 static struct ata_port_info info = { 197 .sht = &hpt3x3_sht, 198 .flags = ATA_FLAG_SLAVE_POSS|ATA_FLAG_SRST, 199 .pio_mask = 0x1f, 200 .mwdma_mask = 0x07, 201 .udma_mask = 0x07, 202 .port_ops = &hpt3x3_port_ops 203 }; 204 static struct ata_port_info *port_info[2] = { &info, &info }; 205 206 hpt3x3_init_chipset(dev); 207 /* Now kick off ATA set up */ 208 return ata_pci_init_one(dev, port_info, 2); 209 } 210 211 #ifdef CONFIG_PM 212 static int hpt3x3_reinit_one(struct pci_dev *dev) 213 { 214 hpt3x3_init_chipset(dev); 215 return ata_pci_device_resume(dev); 216 } 217 #endif 218 219 static const struct pci_device_id hpt3x3[] = { 220 { PCI_VDEVICE(TTI, PCI_DEVICE_ID_TTI_HPT343), }, 221 222 { }, 223 }; 224 225 static struct pci_driver hpt3x3_pci_driver = { 226 .name = DRV_NAME, 227 .id_table = hpt3x3, 228 .probe = hpt3x3_init_one, 229 .remove = ata_pci_remove_one, 230 #ifdef CONFIG_PM 231 .suspend = ata_pci_device_suspend, 232 .resume = hpt3x3_reinit_one, 233 #endif 234 }; 235 236 static int __init hpt3x3_init(void) 237 { 238 return pci_register_driver(&hpt3x3_pci_driver); 239 } 240 241 242 static void __exit hpt3x3_exit(void) 243 { 244 pci_unregister_driver(&hpt3x3_pci_driver); 245 } 246 247 248 MODULE_AUTHOR("Alan Cox"); 249 MODULE_DESCRIPTION("low-level driver for the Highpoint HPT343/363"); 250 MODULE_LICENSE("GPL"); 251 MODULE_DEVICE_TABLE(pci, hpt3x3); 252 MODULE_VERSION(DRV_VERSION); 253 254 module_init(hpt3x3_init); 255 module_exit(hpt3x3_exit); 256