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), uli_5289 }, 49 { PCI_VDEVICE(AL, 0x5287), uli_5287 }, 50 { PCI_VDEVICE(AL, 0x5281), uli_5281 }, 51 52 { } /* terminate list */ 53 }; 54 55 static 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 62 static const struct scsi_host_template uli_sht = { 63 ATA_BMDMA_SHT(DRV_NAME), 64 }; 65 66 static 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 73 static 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 81 MODULE_AUTHOR("Peer Chen"); 82 MODULE_DESCRIPTION("low-level driver for ULi Electronics SATA controller"); 83 MODULE_LICENSE("GPL"); 84 MODULE_DEVICE_TABLE(pci, uli_pci_tbl); 85 MODULE_VERSION(DRV_VERSION); 86 87 static 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 93 static 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 } 102 103 static 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 } 110 111 static 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 } 119 120 static 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=0 123 return -EINVAL; 124 125 uli_scr_cfg_write(link, sc_reg, val); 126 return 0; 127 } 128 129 static 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 after 171 * 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 } 228 229 module_pci_driver(uli_pci_driver); 230