pata_cs5520.c revision 8501120f1df1aa6abe38b51ab91df08ccaa1b971
1669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik/* 2669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik * IDE tuning and bus mastering support for the CS5510/CS5520 3669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik * chipsets 4669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik * 5669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik * The CS5510/CS5520 are slightly unusual devices. Unlike the 6669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik * typical IDE controllers they do bus mastering with the drive in 7669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik * PIO mode and smarter silicon. 8669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik * 9669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik * The practical upshot of this is that we must always tune the 10669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik * drive for the right PIO mode. We must also ignore all the blacklists 11669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik * and the drive bus mastering DMA information. Also to confuse matters 12669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik * further we can do DMA on PIO only drives. 13669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik * 14669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik * DMA on the 5510 also requires we disable_hlt() during DMA on early 15669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik * revisions. 16669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik * 17669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik * *** This driver is strictly experimental *** 18669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik * 19669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik * (c) Copyright Red Hat Inc 2002 20669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik * 21669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik * This program is free software; you can redistribute it and/or modify it 22669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik * under the terms of the GNU General Public License as published by the 23669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik * Free Software Foundation; either version 2, or (at your option) any 24669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik * later version. 25669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik * 26669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik * This program is distributed in the hope that it will be useful, but 27669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik * WITHOUT ANY WARRANTY; without even the implied warranty of 28669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 29669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik * General Public License for more details. 30669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik * 31669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik * Documentation: 32669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik * Not publically available. 33669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik */ 34669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik#include <linux/kernel.h> 35669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik#include <linux/module.h> 36669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik#include <linux/pci.h> 37669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik#include <linux/init.h> 38669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik#include <linux/blkdev.h> 39669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik#include <linux/delay.h> 40669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik#include <scsi/scsi_host.h> 41669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik#include <linux/libata.h> 42669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik 43669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik#define DRV_NAME "pata_cs5520" 448501120f1df1aa6abe38b51ab91df08ccaa1b971Alan Cox#define DRV_VERSION "0.6.3" 45669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik 46669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzikstruct pio_clocks 47669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik{ 48669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik int address; 49669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik int assert; 50669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik int recovery; 51669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik}; 52669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik 53669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzikstatic const struct pio_clocks cs5520_pio_clocks[]={ 54669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik {3, 6, 11}, 55669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik {2, 5, 6}, 56669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik {1, 4, 3}, 57669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik {1, 3, 2}, 58669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik {1, 2, 1} 59669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik}; 60669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik 61669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik/** 62669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik * cs5520_set_timings - program PIO timings 63669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik * @ap: ATA port 64669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik * @adev: ATA device 65669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik * 66669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik * Program the PIO mode timings for the controller according to the pio 67669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik * clocking table. 68669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik */ 69669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik 70669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzikstatic void cs5520_set_timings(struct ata_port *ap, struct ata_device *adev, int pio) 71669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik{ 72669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik struct pci_dev *pdev = to_pci_dev(ap->host->dev); 73669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik int slave = adev->devno; 74669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik 75669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik pio -= XFER_PIO_0; 76669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik 77669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik /* Channel command timing */ 78669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik pci_write_config_byte(pdev, 0x62 + ap->port_no, 79669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik (cs5520_pio_clocks[pio].recovery << 4) | 80669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik (cs5520_pio_clocks[pio].assert)); 81669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik /* FIXME: should these use address ? */ 82669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik /* Read command timing */ 83669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik pci_write_config_byte(pdev, 0x64 + 4*ap->port_no + slave, 84669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik (cs5520_pio_clocks[pio].recovery << 4) | 85669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik (cs5520_pio_clocks[pio].assert)); 86669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik /* Write command timing */ 87669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik pci_write_config_byte(pdev, 0x66 + 4*ap->port_no + slave, 88669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik (cs5520_pio_clocks[pio].recovery << 4) | 89669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik (cs5520_pio_clocks[pio].assert)); 90669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik} 91669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik 92669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik/** 93669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik * cs5520_enable_dma - turn on DMA bits 94669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik * 95669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik * Turn on the DMA bits for this disk. Needed because the BIOS probably 96669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik * has not done the work for us. Belongs in the core SATA code. 97669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik */ 98669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik 99669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzikstatic void cs5520_enable_dma(struct ata_port *ap, struct ata_device *adev) 100669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik{ 101669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik /* Set the DMA enable/disable flag */ 102669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik u8 reg = inb(ap->ioaddr.bmdma_addr + 0x02); 103669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik reg |= 1<<(adev->devno + 5); 104669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik outb(reg, ap->ioaddr.bmdma_addr + 0x02); 105669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik} 106669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik 107669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik/** 108669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik * cs5520_set_dmamode - program DMA timings 109669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik * @ap: ATA port 110669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik * @adev: ATA device 111669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik * 112669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik * Program the DMA mode timings for the controller according to the pio 113669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik * clocking table. Note that this device sets the DMA timings to PIO 114669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik * mode values. This may seem bizarre but the 5520 architecture talks 115669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik * PIO mode to the disk and DMA mode to the controller so the underlying 116669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik * transfers are PIO timed. 117669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik */ 118669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik 119669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzikstatic void cs5520_set_dmamode(struct ata_port *ap, struct ata_device *adev) 120669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik{ 121669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik static const int dma_xlate[3] = { XFER_PIO_0, XFER_PIO_3, XFER_PIO_4 }; 122669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik cs5520_set_timings(ap, adev, dma_xlate[adev->dma_mode]); 123669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik cs5520_enable_dma(ap, adev); 124669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik} 125669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik 126669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik/** 127669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik * cs5520_set_piomode - program PIO timings 128669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik * @ap: ATA port 129669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik * @adev: ATA device 130669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik * 131669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik * Program the PIO mode timings for the controller according to the pio 132669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik * clocking table. We know pio_mode will equal dma_mode because of the 133669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik * CS5520 architecture. At least once we turned DMA on and wrote a 134669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik * mode setter. 135669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik */ 136669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik 137669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzikstatic void cs5520_set_piomode(struct ata_port *ap, struct ata_device *adev) 138669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik{ 139669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik cs5520_set_timings(ap, adev, adev->pio_mode); 140669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik} 141669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik 142669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik 143669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzikstatic int cs5520_pre_reset(struct ata_port *ap) 144669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik{ 145669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik ap->cbl = ATA_CBL_PATA40; 146669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik return ata_std_prereset(ap); 147669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik} 148669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik 149669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzikstatic void cs5520_error_handler(struct ata_port *ap) 150669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik{ 151669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik return ata_bmdma_drive_eh(ap, cs5520_pre_reset, ata_std_softreset, NULL, ata_std_postreset); 152669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik} 153669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik 154669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzikstatic struct scsi_host_template cs5520_sht = { 155669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik .module = THIS_MODULE, 156669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik .name = DRV_NAME, 157669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik .ioctl = ata_scsi_ioctl, 158669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik .queuecommand = ata_scsi_queuecmd, 159669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik .can_queue = ATA_DEF_QUEUE, 160669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik .this_id = ATA_SHT_THIS_ID, 161669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik .sg_tablesize = LIBATA_MAX_PRD, 162669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik .max_sectors = ATA_MAX_SECTORS, 163669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik .cmd_per_lun = ATA_SHT_CMD_PER_LUN, 164669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik .emulated = ATA_SHT_EMULATED, 165669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik .use_clustering = ATA_SHT_USE_CLUSTERING, 166669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik .proc_name = DRV_NAME, 167669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik .dma_boundary = ATA_DMA_BOUNDARY, 168669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik .slave_configure = ata_scsi_slave_config, 169afdfe899e6420eac6c5eb3bc8c89456dff38d40eTejun Heo .slave_destroy = ata_scsi_slave_destroy, 170669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik .bios_param = ata_std_bios_param, 1718501120f1df1aa6abe38b51ab91df08ccaa1b971Alan Cox .resume = ata_scsi_device_resume, 1728501120f1df1aa6abe38b51ab91df08ccaa1b971Alan Cox .suspend = ata_scsi_device_suspend, 173669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik}; 174669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik 175669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzikstatic struct ata_port_operations cs5520_port_ops = { 176669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik .port_disable = ata_port_disable, 177669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik .set_piomode = cs5520_set_piomode, 178669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik .set_dmamode = cs5520_set_dmamode, 179669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik 180669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik .tf_load = ata_tf_load, 181669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik .tf_read = ata_tf_read, 182669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik .check_status = ata_check_status, 183669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik .exec_command = ata_exec_command, 184669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik .dev_select = ata_std_dev_select, 185669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik 186669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik .freeze = ata_bmdma_freeze, 187669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik .thaw = ata_bmdma_thaw, 188669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik .error_handler = cs5520_error_handler, 189669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik .post_internal_cmd = ata_bmdma_post_internal_cmd, 190669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik 191669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik .bmdma_setup = ata_bmdma_setup, 192669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik .bmdma_start = ata_bmdma_start, 193669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik .bmdma_stop = ata_bmdma_stop, 194669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik .bmdma_status = ata_bmdma_status, 195669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik .qc_prep = ata_qc_prep, 196669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik .qc_issue = ata_qc_issue_prot, 197669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik .data_xfer = ata_pio_data_xfer, 198669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik 199669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik .irq_handler = ata_interrupt, 200669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik .irq_clear = ata_bmdma_irq_clear, 201669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik 202669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik .port_start = ata_port_start, 203669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik .port_stop = ata_port_stop, 204669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik .host_stop = ata_host_stop, 205669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik}; 206669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik 207669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzikstatic int __devinit cs5520_init_one(struct pci_dev *dev, const struct pci_device_id *id) 208669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik{ 209669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik u8 pcicfg; 210669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik static struct ata_probe_ent probe[2]; 211669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik int ports = 0; 212669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik 213669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik /* IDE port enable bits */ 214669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik pci_read_config_byte(dev, 0x60, &pcicfg); 215669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik 216669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik /* Check if the ATA ports are enabled */ 217669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik if ((pcicfg & 3) == 0) 218669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik return -ENODEV; 219669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik 220669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik if ((pcicfg & 0x40) == 0) { 221669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik printk(KERN_WARNING DRV_NAME ": DMA mode disabled. Enabling.\n"); 222669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik pci_write_config_byte(dev, 0x60, pcicfg | 0x40); 223669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik } 224669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik 225669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik /* Perform set up for DMA */ 226669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik if (pci_enable_device_bars(dev, 1<<2)) { 227669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik printk(KERN_ERR DRV_NAME ": unable to configure BAR2.\n"); 228669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik return -ENODEV; 229669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik } 230669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik pci_set_master(dev); 231669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik if (pci_set_dma_mask(dev, DMA_32BIT_MASK)) { 232669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik printk(KERN_ERR DRV_NAME ": unable to configure DMA mask.\n"); 233669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik return -ENODEV; 234669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik } 235669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik if (pci_set_consistent_dma_mask(dev, DMA_32BIT_MASK)) { 236669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik printk(KERN_ERR DRV_NAME ": unable to configure consistent DMA mask.\n"); 237669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik return -ENODEV; 238669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik } 239669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik 240669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik /* We have to do our own plumbing as the PCI setup for this 241669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik chipset is non-standard so we can't punt to the libata code */ 242669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik 243669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik INIT_LIST_HEAD(&probe[0].node); 244669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik probe[0].dev = pci_dev_to_dev(dev); 245669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik probe[0].port_ops = &cs5520_port_ops; 246669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik probe[0].sht = &cs5520_sht; 247669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik probe[0].pio_mask = 0x1F; 248669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik probe[0].mwdma_mask = id->driver_data; 249669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik probe[0].irq = 14; 250669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik probe[0].irq_flags = 0; 251669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik probe[0].port_flags = ATA_FLAG_SLAVE_POSS|ATA_FLAG_SRST; 252669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik probe[0].n_ports = 1; 253669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik probe[0].port[0].cmd_addr = 0x1F0; 254669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik probe[0].port[0].ctl_addr = 0x3F6; 255669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik probe[0].port[0].altstatus_addr = 0x3F6; 256669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik probe[0].port[0].bmdma_addr = pci_resource_start(dev, 2); 257669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik 258669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik /* The secondary lurks at different addresses but is otherwise 259669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik the same beastie */ 260669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik 261669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik probe[1] = probe[0]; 262669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik INIT_LIST_HEAD(&probe[1].node); 263669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik probe[1].irq = 15; 264669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik probe[1].port[0].cmd_addr = 0x170; 265669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik probe[1].port[0].ctl_addr = 0x376; 266669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik probe[1].port[0].altstatus_addr = 0x376; 267669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik probe[1].port[0].bmdma_addr = pci_resource_start(dev, 2) + 8; 268669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik 269669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik /* Let libata fill in the port details */ 270669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik ata_std_ports(&probe[0].port[0]); 271669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik ata_std_ports(&probe[1].port[0]); 272669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik 273669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik /* Now add the ports that are active */ 274669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik if (pcicfg & 1) 275669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik ports += ata_device_add(&probe[0]); 276669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik if (pcicfg & 2) 277669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik ports += ata_device_add(&probe[1]); 278669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik if (ports) 279669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik return 0; 280669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik return -ENODEV; 281669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik} 282669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik 283669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik/** 284669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik * cs5520_remove_one - device unload 285669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik * @pdev: PCI device being removed 286669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik * 287669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik * Handle an unplug/unload event for a PCI device. Unload the 288669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik * PCI driver but do not use the default handler as we manage 289669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik * resources ourself and *MUST NOT* disable the device as it has 290669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik * other functions. 291669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik */ 292669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik 293669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzikstatic void __devexit cs5520_remove_one(struct pci_dev *pdev) 294669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik{ 295669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik struct device *dev = pci_dev_to_dev(pdev); 296669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik struct ata_host *host = dev_get_drvdata(dev); 297669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik 298669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik ata_host_remove(host); 299669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik dev_set_drvdata(dev, NULL); 300669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik} 301669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik 3028501120f1df1aa6abe38b51ab91df08ccaa1b971Alan Cox/** 3038501120f1df1aa6abe38b51ab91df08ccaa1b971Alan Cox * cs5520_reinit_one - device resume 3048501120f1df1aa6abe38b51ab91df08ccaa1b971Alan Cox * @pdev: PCI device 3058501120f1df1aa6abe38b51ab91df08ccaa1b971Alan Cox * 3068501120f1df1aa6abe38b51ab91df08ccaa1b971Alan Cox * Do any reconfiguration work needed by a resume from RAM. We need 3078501120f1df1aa6abe38b51ab91df08ccaa1b971Alan Cox * to restore DMA mode support on BIOSen which disabled it 3088501120f1df1aa6abe38b51ab91df08ccaa1b971Alan Cox */ 3098501120f1df1aa6abe38b51ab91df08ccaa1b971Alan Cox 3108501120f1df1aa6abe38b51ab91df08ccaa1b971Alan Coxstatic int cs5520_reinit_one(struct pci_dev *pdev) 3118501120f1df1aa6abe38b51ab91df08ccaa1b971Alan Cox{ 3128501120f1df1aa6abe38b51ab91df08ccaa1b971Alan Cox u8 pcicfg; 3138501120f1df1aa6abe38b51ab91df08ccaa1b971Alan Cox pci_read_config_byte(pdev, 0x60, &pcicfg); 3148501120f1df1aa6abe38b51ab91df08ccaa1b971Alan Cox if ((pcicfg & 0x40) == 0) 3158501120f1df1aa6abe38b51ab91df08ccaa1b971Alan Cox pci_write_config_byte(pdev, 0x60, pcicfg | 0x40); 3168501120f1df1aa6abe38b51ab91df08ccaa1b971Alan Cox return ata_pci_device_resume(pdev); 3178501120f1df1aa6abe38b51ab91df08ccaa1b971Alan Cox} 318669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik/* For now keep DMA off. We can set it for all but A rev CS5510 once the 319669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik core ATA code can handle it */ 320669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik 3212d2744fc8be620a2dc469cf48349e3e704119f1bJeff Garzikstatic const struct pci_device_id pata_cs5520[] = { 3222d2744fc8be620a2dc469cf48349e3e704119f1bJeff Garzik { PCI_VDEVICE(CYRIX, PCI_DEVICE_ID_CYRIX_5510), }, 3232d2744fc8be620a2dc469cf48349e3e704119f1bJeff Garzik { PCI_VDEVICE(CYRIX, PCI_DEVICE_ID_CYRIX_5520), }, 3242d2744fc8be620a2dc469cf48349e3e704119f1bJeff Garzik 3252d2744fc8be620a2dc469cf48349e3e704119f1bJeff Garzik { }, 326669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik}; 327669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik 328669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzikstatic struct pci_driver cs5520_pci_driver = { 329669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik .name = DRV_NAME, 330669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik .id_table = pata_cs5520, 331669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik .probe = cs5520_init_one, 3328501120f1df1aa6abe38b51ab91df08ccaa1b971Alan Cox .remove = cs5520_remove_one, 3338501120f1df1aa6abe38b51ab91df08ccaa1b971Alan Cox .suspend = ata_pci_device_suspend, 3348501120f1df1aa6abe38b51ab91df08ccaa1b971Alan Cox .resume = cs5520_reinit_one, 335669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik}; 336669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik 337669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzikstatic int __init cs5520_init(void) 338669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik{ 339669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik return pci_register_driver(&cs5520_pci_driver); 340669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik} 341669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik 342669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzikstatic void __exit cs5520_exit(void) 343669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik{ 344669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik pci_unregister_driver(&cs5520_pci_driver); 345669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik} 346669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik 347669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff GarzikMODULE_AUTHOR("Alan Cox"); 348669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff GarzikMODULE_DESCRIPTION("low-level driver for Cyrix CS5510/5520"); 349669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff GarzikMODULE_LICENSE("GPL"); 350669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff GarzikMODULE_DEVICE_TABLE(pci, pata_cs5520); 351669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff GarzikMODULE_VERSION(DRV_VERSION); 352669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik 353669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzikmodule_init(cs5520_init); 354669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzikmodule_exit(cs5520_exit); 355669a5db411d85a14f86cd92bc16bf7ab5b8aa235Jeff Garzik 356