1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * sata_uli.c - ULi Electronics SATA 4 * 5 * libata documentation is available via 'make {ps|pdf}docs', 6 * as Documentation/driver-api/libata.rst 7 * 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 25 enum { 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 39 struct uli_priv { 40 unsigned int scr_cfg_addr[uli_max_ports]; 41 }; 42 43 static int uli_init_one(struct pci_dev *pdev, const struct pci_device_id *ent); 44 static int uli_scr_read(struct ata_link *link, unsigned int sc_reg, u32 *val); 45 static int uli_scr_write(struct ata_link *link, unsigned int sc_reg, u32 val); 46 47 static const struct pci_device_id uli_pci_tbl[] = { 48 { PCI_VDEVICE(AL, 0x5289), .driver_data = uli_5289 }, 49 { PCI_VDEVICE(AL, 0x5287), .driver_data = uli_5287 }, 50 { PCI_VDEVICE(AL, 0x5281), .driver_data = uli_5281 }, 51 { } /* terminate list */ 52 }; 53 54 static struct pci_driver uli_pci_driver = { 55 .name = DRV_NAME, 56 .id_table = uli_pci_tbl, 57 .probe = uli_init_one, 58 .remove = ata_pci_remove_one, 59 }; 60 61 static const struct scsi_host_template uli_sht = { 62 ATA_BMDMA_SHT(DRV_NAME), 63 }; 64 65 static struct ata_port_operations uli_ops = { 66 .inherits = &ata_bmdma_port_ops, 67 .scr_read = uli_scr_read, 68 .scr_write = uli_scr_write, 69 .reset.hardreset = ATA_OP_NULL, 70 }; 71 72 static const struct ata_port_info uli_port_info = { 73 .flags = ATA_FLAG_SATA | ATA_FLAG_IGN_SIMPLEX, 74 .pio_mask = ATA_PIO4, 75 .udma_mask = ATA_UDMA6, 76 .port_ops = &uli_ops, 77 }; 78 79 80 MODULE_AUTHOR("Peer Chen"); 81 MODULE_DESCRIPTION("low-level driver for ULi Electronics SATA controller"); 82 MODULE_LICENSE("GPL"); 83 MODULE_DEVICE_TABLE(pci, uli_pci_tbl); 84 MODULE_VERSION(DRV_VERSION); 85 86 static unsigned int get_scr_cfg_addr(struct ata_port *ap, unsigned int sc_reg) 87 { 88 struct uli_priv *hpriv = ap->host->private_data; 89 return hpriv->scr_cfg_addr[ap->port_no] + (4 * sc_reg); 90 } 91 92 static u32 uli_scr_cfg_read(struct ata_link *link, unsigned int sc_reg) 93 { 94 struct pci_dev *pdev = to_pci_dev(link->ap->host->dev); 95 unsigned int cfg_addr = get_scr_cfg_addr(link->ap, sc_reg); 96 u32 val; 97 98 pci_read_config_dword(pdev, cfg_addr, &val); 99 return val; 100 } 101 102 static void uli_scr_cfg_write(struct ata_link *link, unsigned int scr, u32 val) 103 { 104 struct pci_dev *pdev = to_pci_dev(link->ap->host->dev); 105 unsigned int cfg_addr = get_scr_cfg_addr(link->ap, scr); 106 107 pci_write_config_dword(pdev, cfg_addr, val); 108 } 109 110 static int uli_scr_read(struct ata_link *link, unsigned int sc_reg, u32 *val) 111 { 112 if (sc_reg > SCR_CONTROL) 113 return -EINVAL; 114 115 *val = uli_scr_cfg_read(link, sc_reg); 116 return 0; 117 } 118 119 static int uli_scr_write(struct ata_link *link, unsigned int sc_reg, u32 val) 120 { 121 if (sc_reg > SCR_CONTROL) //SCR_CONTROL=2, SCR_ERROR=1, SCR_STATUS=0 122 return -EINVAL; 123 124 uli_scr_cfg_write(link, sc_reg, val); 125 return 0; 126 } 127 128 static int uli_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) 129 { 130 const struct ata_port_info *ppi[] = { &uli_port_info, NULL }; 131 unsigned int board_idx = (unsigned int) ent->driver_data; 132 struct ata_host *host; 133 struct uli_priv *hpriv; 134 void __iomem * const *iomap; 135 struct ata_ioports *ioaddr; 136 int n_ports, rc; 137 138 ata_print_version_once(&pdev->dev, DRV_VERSION); 139 140 rc = pcim_enable_device(pdev); 141 if (rc) 142 return rc; 143 144 n_ports = 2; 145 if (board_idx == uli_5287) 146 n_ports = 4; 147 148 /* allocate the host */ 149 host = ata_host_alloc_pinfo(&pdev->dev, ppi, n_ports); 150 if (!host) 151 return -ENOMEM; 152 153 hpriv = devm_kzalloc(&pdev->dev, sizeof(*hpriv), GFP_KERNEL); 154 if (!hpriv) 155 return -ENOMEM; 156 host->private_data = hpriv; 157 158 /* the first two ports are standard SFF */ 159 rc = ata_pci_sff_init_host(host); 160 if (rc) 161 return rc; 162 163 ata_pci_bmdma_init(host); 164 165 iomap = host->iomap; 166 167 switch (board_idx) { 168 case uli_5287: 169 /* If there are four, the last two live right after 170 * the standard SFF ports. 171 */ 172 hpriv->scr_cfg_addr[0] = ULI5287_BASE; 173 hpriv->scr_cfg_addr[1] = ULI5287_BASE + ULI5287_OFFS; 174 175 ioaddr = &host->ports[2]->ioaddr; 176 ioaddr->cmd_addr = iomap[0] + 8; 177 ioaddr->altstatus_addr = 178 ioaddr->ctl_addr = (void __iomem *) 179 ((unsigned long)iomap[1] | ATA_PCI_CTL_OFS) + 4; 180 ioaddr->bmdma_addr = iomap[4] + 16; 181 hpriv->scr_cfg_addr[2] = ULI5287_BASE + ULI5287_OFFS*4; 182 ata_sff_std_ports(ioaddr); 183 184 ata_port_desc(host->ports[2], 185 "cmd 0x%llx ctl 0x%llx bmdma 0x%llx", 186 (unsigned long long)pci_resource_start(pdev, 0) + 8, 187 ((unsigned long long)pci_resource_start(pdev, 1) | ATA_PCI_CTL_OFS) + 4, 188 (unsigned long long)pci_resource_start(pdev, 4) + 16); 189 190 ioaddr = &host->ports[3]->ioaddr; 191 ioaddr->cmd_addr = iomap[2] + 8; 192 ioaddr->altstatus_addr = 193 ioaddr->ctl_addr = (void __iomem *) 194 ((unsigned long)iomap[3] | ATA_PCI_CTL_OFS) + 4; 195 ioaddr->bmdma_addr = iomap[4] + 24; 196 hpriv->scr_cfg_addr[3] = ULI5287_BASE + ULI5287_OFFS*5; 197 ata_sff_std_ports(ioaddr); 198 199 ata_port_desc(host->ports[2], 200 "cmd 0x%llx ctl 0x%llx bmdma 0x%llx", 201 (unsigned long long)pci_resource_start(pdev, 2) + 9, 202 ((unsigned long long)pci_resource_start(pdev, 3) | ATA_PCI_CTL_OFS) + 4, 203 (unsigned long long)pci_resource_start(pdev, 4) + 24); 204 205 break; 206 207 case uli_5289: 208 hpriv->scr_cfg_addr[0] = ULI5287_BASE; 209 hpriv->scr_cfg_addr[1] = ULI5287_BASE + ULI5287_OFFS; 210 break; 211 212 case uli_5281: 213 hpriv->scr_cfg_addr[0] = ULI5281_BASE; 214 hpriv->scr_cfg_addr[1] = ULI5281_BASE + ULI5281_OFFS; 215 break; 216 217 default: 218 BUG(); 219 break; 220 } 221 222 pci_set_master(pdev); 223 pcim_intx(pdev, 1); 224 return ata_host_activate(host, pdev->irq, ata_bmdma_interrupt, 225 IRQF_SHARED, &uli_sht); 226 } 227 228 module_pci_driver(uli_pci_driver); 229