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1// SPDX-License-Identifier: GPL-2.0-or-later2/*3 * sata_uli.c - ULi Electronics SATA4 *5 * libata documentation is available via 'make {ps|pdf}docs',6 * as Documentation/driver-api/libata.rst7 *8 * Hardware documentation available under NDA.9 */10 11#include <linux/kernel.h>12#include <linux/module.h>13#include <linux/gfp.h>14#include <linux/pci.h>15#include <linux/blkdev.h>16#include <linux/delay.h>17#include <linux/interrupt.h>18#include <linux/device.h>19#include <scsi/scsi_host.h>20#include <linux/libata.h>21 22#define DRV_NAME "sata_uli"23#define DRV_VERSION "1.3"24 25enum {26 uli_5289 = 0,27 uli_5287 = 1,28 uli_5281 = 2,29 30 uli_max_ports = 4,31 32 /* PCI configuration registers */33 ULI5287_BASE = 0x90, /* sata0 phy SCR registers */34 ULI5287_OFFS = 0x10, /* offset from sata0->sata1 phy regs */35 ULI5281_BASE = 0x60, /* sata0 phy SCR registers */36 ULI5281_OFFS = 0x60, /* offset from sata0->sata1 phy regs */37};38 39struct uli_priv {40 unsigned int scr_cfg_addr[uli_max_ports];41};42 43static int uli_init_one(struct pci_dev *pdev, const struct pci_device_id *ent);44static int uli_scr_read(struct ata_link *link, unsigned int sc_reg, u32 *val);45static int uli_scr_write(struct ata_link *link, unsigned int sc_reg, u32 val);46 47static const struct pci_device_id uli_pci_tbl[] = {48 { PCI_VDEVICE(AL, 0x5289), uli_5289 },49 { PCI_VDEVICE(AL, 0x5287), uli_5287 },50 { PCI_VDEVICE(AL, 0x5281), uli_5281 },51 52 { } /* terminate list */53};54 55static struct pci_driver uli_pci_driver = {56 .name = DRV_NAME,57 .id_table = uli_pci_tbl,58 .probe = uli_init_one,59 .remove = ata_pci_remove_one,60};61 62static const struct scsi_host_template uli_sht = {63 ATA_BMDMA_SHT(DRV_NAME),64};65 66static struct ata_port_operations uli_ops = {67 .inherits = &ata_bmdma_port_ops,68 .scr_read = uli_scr_read,69 .scr_write = uli_scr_write,70 .hardreset = ATA_OP_NULL,71};72 73static const struct ata_port_info uli_port_info = {74 .flags = ATA_FLAG_SATA | ATA_FLAG_IGN_SIMPLEX,75 .pio_mask = ATA_PIO4,76 .udma_mask = ATA_UDMA6,77 .port_ops = &uli_ops,78};79 80 81MODULE_AUTHOR("Peer Chen");82MODULE_DESCRIPTION("low-level driver for ULi Electronics SATA controller");83MODULE_LICENSE("GPL");84MODULE_DEVICE_TABLE(pci, uli_pci_tbl);85MODULE_VERSION(DRV_VERSION);86 87static unsigned int get_scr_cfg_addr(struct ata_port *ap, unsigned int sc_reg)88{89 struct uli_priv *hpriv = ap->host->private_data;90 return hpriv->scr_cfg_addr[ap->port_no] + (4 * sc_reg);91}92 93static u32 uli_scr_cfg_read(struct ata_link *link, unsigned int sc_reg)94{95 struct pci_dev *pdev = to_pci_dev(link->ap->host->dev);96 unsigned int cfg_addr = get_scr_cfg_addr(link->ap, sc_reg);97 u32 val;98 99 pci_read_config_dword(pdev, cfg_addr, &val);100 return val;101}102 103static void uli_scr_cfg_write(struct ata_link *link, unsigned int scr, u32 val)104{105 struct pci_dev *pdev = to_pci_dev(link->ap->host->dev);106 unsigned int cfg_addr = get_scr_cfg_addr(link->ap, scr);107 108 pci_write_config_dword(pdev, cfg_addr, val);109}110 111static int uli_scr_read(struct ata_link *link, unsigned int sc_reg, u32 *val)112{113 if (sc_reg > SCR_CONTROL)114 return -EINVAL;115 116 *val = uli_scr_cfg_read(link, sc_reg);117 return 0;118}119 120static int uli_scr_write(struct ata_link *link, unsigned int sc_reg, u32 val)121{122 if (sc_reg > SCR_CONTROL) //SCR_CONTROL=2, SCR_ERROR=1, SCR_STATUS=0123 return -EINVAL;124 125 uli_scr_cfg_write(link, sc_reg, val);126 return 0;127}128 129static int uli_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)130{131 const struct ata_port_info *ppi[] = { &uli_port_info, NULL };132 unsigned int board_idx = (unsigned int) ent->driver_data;133 struct ata_host *host;134 struct uli_priv *hpriv;135 void __iomem * const *iomap;136 struct ata_ioports *ioaddr;137 int n_ports, rc;138 139 ata_print_version_once(&pdev->dev, DRV_VERSION);140 141 rc = pcim_enable_device(pdev);142 if (rc)143 return rc;144 145 n_ports = 2;146 if (board_idx == uli_5287)147 n_ports = 4;148 149 /* allocate the host */150 host = ata_host_alloc_pinfo(&pdev->dev, ppi, n_ports);151 if (!host)152 return -ENOMEM;153 154 hpriv = devm_kzalloc(&pdev->dev, sizeof(*hpriv), GFP_KERNEL);155 if (!hpriv)156 return -ENOMEM;157 host->private_data = hpriv;158 159 /* the first two ports are standard SFF */160 rc = ata_pci_sff_init_host(host);161 if (rc)162 return rc;163 164 ata_pci_bmdma_init(host);165 166 iomap = host->iomap;167 168 switch (board_idx) {169 case uli_5287:170 /* If there are four, the last two live right after171 * the standard SFF ports.172 */173 hpriv->scr_cfg_addr[0] = ULI5287_BASE;174 hpriv->scr_cfg_addr[1] = ULI5287_BASE + ULI5287_OFFS;175 176 ioaddr = &host->ports[2]->ioaddr;177 ioaddr->cmd_addr = iomap[0] + 8;178 ioaddr->altstatus_addr =179 ioaddr->ctl_addr = (void __iomem *)180 ((unsigned long)iomap[1] | ATA_PCI_CTL_OFS) + 4;181 ioaddr->bmdma_addr = iomap[4] + 16;182 hpriv->scr_cfg_addr[2] = ULI5287_BASE + ULI5287_OFFS*4;183 ata_sff_std_ports(ioaddr);184 185 ata_port_desc(host->ports[2],186 "cmd 0x%llx ctl 0x%llx bmdma 0x%llx",187 (unsigned long long)pci_resource_start(pdev, 0) + 8,188 ((unsigned long long)pci_resource_start(pdev, 1) | ATA_PCI_CTL_OFS) + 4,189 (unsigned long long)pci_resource_start(pdev, 4) + 16);190 191 ioaddr = &host->ports[3]->ioaddr;192 ioaddr->cmd_addr = iomap[2] + 8;193 ioaddr->altstatus_addr =194 ioaddr->ctl_addr = (void __iomem *)195 ((unsigned long)iomap[3] | ATA_PCI_CTL_OFS) + 4;196 ioaddr->bmdma_addr = iomap[4] + 24;197 hpriv->scr_cfg_addr[3] = ULI5287_BASE + ULI5287_OFFS*5;198 ata_sff_std_ports(ioaddr);199 200 ata_port_desc(host->ports[2],201 "cmd 0x%llx ctl 0x%llx bmdma 0x%llx",202 (unsigned long long)pci_resource_start(pdev, 2) + 9,203 ((unsigned long long)pci_resource_start(pdev, 3) | ATA_PCI_CTL_OFS) + 4,204 (unsigned long long)pci_resource_start(pdev, 4) + 24);205 206 break;207 208 case uli_5289:209 hpriv->scr_cfg_addr[0] = ULI5287_BASE;210 hpriv->scr_cfg_addr[1] = ULI5287_BASE + ULI5287_OFFS;211 break;212 213 case uli_5281:214 hpriv->scr_cfg_addr[0] = ULI5281_BASE;215 hpriv->scr_cfg_addr[1] = ULI5281_BASE + ULI5281_OFFS;216 break;217 218 default:219 BUG();220 break;221 }222 223 pci_set_master(pdev);224 pci_intx(pdev, 1);225 return ata_host_activate(host, pdev->irq, ata_bmdma_interrupt,226 IRQF_SHARED, &uli_sht);227}228 229module_pci_driver(uli_pci_driver);230