diff options
Diffstat (limited to 'drivers/ata/sata_uli.c')
| -rw-r--r-- | drivers/ata/sata_uli.c | 229 |
1 files changed, 229 insertions, 0 deletions
diff --git a/drivers/ata/sata_uli.c b/drivers/ata/sata_uli.c new file mode 100644 index 000000000..815e6af75 --- /dev/null +++ b/drivers/ata/sata_uli.c @@ -0,0 +1,229 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * sata_uli.c - ULi Electronics SATA + * + * libata documentation is available via 'make {ps|pdf}docs', + * as Documentation/driver-api/libata.rst + * + * Hardware documentation available under NDA. + */ + +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/gfp.h> +#include <linux/pci.h> +#include <linux/blkdev.h> +#include <linux/delay.h> +#include <linux/interrupt.h> +#include <linux/device.h> +#include <scsi/scsi_host.h> +#include <linux/libata.h> + +#define DRV_NAME "sata_uli" +#define DRV_VERSION "1.3" + +enum { + uli_5289 = 0, + uli_5287 = 1, + uli_5281 = 2, + + uli_max_ports = 4, + + /* PCI configuration registers */ + ULI5287_BASE = 0x90, /* sata0 phy SCR registers */ + ULI5287_OFFS = 0x10, /* offset from sata0->sata1 phy regs */ + ULI5281_BASE = 0x60, /* sata0 phy SCR registers */ + ULI5281_OFFS = 0x60, /* offset from sata0->sata1 phy regs */ +}; + +struct uli_priv { + unsigned int scr_cfg_addr[uli_max_ports]; +}; + +static int uli_init_one(struct pci_dev *pdev, const struct pci_device_id *ent); +static int uli_scr_read(struct ata_link *link, unsigned int sc_reg, u32 *val); +static int uli_scr_write(struct ata_link *link, unsigned int sc_reg, u32 val); + +static const struct pci_device_id uli_pci_tbl[] = { + { PCI_VDEVICE(AL, 0x5289), uli_5289 }, + { PCI_VDEVICE(AL, 0x5287), uli_5287 }, + { PCI_VDEVICE(AL, 0x5281), uli_5281 }, + + { } /* terminate list */ +}; + +static struct pci_driver uli_pci_driver = { + .name = DRV_NAME, + .id_table = uli_pci_tbl, + .probe = uli_init_one, + .remove = ata_pci_remove_one, +}; + +static struct scsi_host_template uli_sht = { + ATA_BMDMA_SHT(DRV_NAME), +}; + +static struct ata_port_operations uli_ops = { + .inherits = &ata_bmdma_port_ops, + .scr_read = uli_scr_read, + .scr_write = uli_scr_write, + .hardreset = ATA_OP_NULL, +}; + +static const struct ata_port_info uli_port_info = { + .flags = ATA_FLAG_SATA | ATA_FLAG_IGN_SIMPLEX, + .pio_mask = ATA_PIO4, + .udma_mask = ATA_UDMA6, + .port_ops = &uli_ops, +}; + + +MODULE_AUTHOR("Peer Chen"); +MODULE_DESCRIPTION("low-level driver for ULi Electronics SATA controller"); +MODULE_LICENSE("GPL"); +MODULE_DEVICE_TABLE(pci, uli_pci_tbl); +MODULE_VERSION(DRV_VERSION); + +static unsigned int get_scr_cfg_addr(struct ata_port *ap, unsigned int sc_reg) +{ + struct uli_priv *hpriv = ap->host->private_data; + return hpriv->scr_cfg_addr[ap->port_no] + (4 * sc_reg); +} + +static u32 uli_scr_cfg_read(struct ata_link *link, unsigned int sc_reg) +{ + struct pci_dev *pdev = to_pci_dev(link->ap->host->dev); + unsigned int cfg_addr = get_scr_cfg_addr(link->ap, sc_reg); + u32 val; + + pci_read_config_dword(pdev, cfg_addr, &val); + return val; +} + +static void uli_scr_cfg_write(struct ata_link *link, unsigned int scr, u32 val) +{ + struct pci_dev *pdev = to_pci_dev(link->ap->host->dev); + unsigned int cfg_addr = get_scr_cfg_addr(link->ap, scr); + + pci_write_config_dword(pdev, cfg_addr, val); +} + +static int uli_scr_read(struct ata_link *link, unsigned int sc_reg, u32 *val) +{ + if (sc_reg > SCR_CONTROL) + return -EINVAL; + + *val = uli_scr_cfg_read(link, sc_reg); + return 0; +} + +static int uli_scr_write(struct ata_link *link, unsigned int sc_reg, u32 val) +{ + if (sc_reg > SCR_CONTROL) //SCR_CONTROL=2, SCR_ERROR=1, SCR_STATUS=0 + return -EINVAL; + + uli_scr_cfg_write(link, sc_reg, val); + return 0; +} + +static int uli_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) +{ + const struct ata_port_info *ppi[] = { &uli_port_info, NULL }; + unsigned int board_idx = (unsigned int) ent->driver_data; + struct ata_host *host; + struct uli_priv *hpriv; + void __iomem * const *iomap; + struct ata_ioports *ioaddr; + int n_ports, rc; + + ata_print_version_once(&pdev->dev, DRV_VERSION); + + rc = pcim_enable_device(pdev); + if (rc) + return rc; + + n_ports = 2; + if (board_idx == uli_5287) + n_ports = 4; + + /* allocate the host */ + host = ata_host_alloc_pinfo(&pdev->dev, ppi, n_ports); + if (!host) + return -ENOMEM; + + hpriv = devm_kzalloc(&pdev->dev, sizeof(*hpriv), GFP_KERNEL); + if (!hpriv) + return -ENOMEM; + host->private_data = hpriv; + + /* the first two ports are standard SFF */ + rc = ata_pci_sff_init_host(host); + if (rc) + return rc; + + ata_pci_bmdma_init(host); + + iomap = host->iomap; + + switch (board_idx) { + case uli_5287: + /* If there are four, the last two live right after + * the standard SFF ports. + */ + hpriv->scr_cfg_addr[0] = ULI5287_BASE; + hpriv->scr_cfg_addr[1] = ULI5287_BASE + ULI5287_OFFS; + + ioaddr = &host->ports[2]->ioaddr; + ioaddr->cmd_addr = iomap[0] + 8; + ioaddr->altstatus_addr = + ioaddr->ctl_addr = (void __iomem *) + ((unsigned long)iomap[1] | ATA_PCI_CTL_OFS) + 4; + ioaddr->bmdma_addr = iomap[4] + 16; + hpriv->scr_cfg_addr[2] = ULI5287_BASE + ULI5287_OFFS*4; + ata_sff_std_ports(ioaddr); + + ata_port_desc(host->ports[2], + "cmd 0x%llx ctl 0x%llx bmdma 0x%llx", + (unsigned long long)pci_resource_start(pdev, 0) + 8, + ((unsigned long long)pci_resource_start(pdev, 1) | ATA_PCI_CTL_OFS) + 4, + (unsigned long long)pci_resource_start(pdev, 4) + 16); + + ioaddr = &host->ports[3]->ioaddr; + ioaddr->cmd_addr = iomap[2] + 8; + ioaddr->altstatus_addr = + ioaddr->ctl_addr = (void __iomem *) + ((unsigned long)iomap[3] | ATA_PCI_CTL_OFS) + 4; + ioaddr->bmdma_addr = iomap[4] + 24; + hpriv->scr_cfg_addr[3] = ULI5287_BASE + ULI5287_OFFS*5; + ata_sff_std_ports(ioaddr); + + ata_port_desc(host->ports[2], + "cmd 0x%llx ctl 0x%llx bmdma 0x%llx", + (unsigned long long)pci_resource_start(pdev, 2) + 9, + ((unsigned long long)pci_resource_start(pdev, 3) | ATA_PCI_CTL_OFS) + 4, + (unsigned long long)pci_resource_start(pdev, 4) + 24); + + break; + + case uli_5289: + hpriv->scr_cfg_addr[0] = ULI5287_BASE; + hpriv->scr_cfg_addr[1] = ULI5287_BASE + ULI5287_OFFS; + break; + + case uli_5281: + hpriv->scr_cfg_addr[0] = ULI5281_BASE; + hpriv->scr_cfg_addr[1] = ULI5281_BASE + ULI5281_OFFS; + break; + + default: + BUG(); + break; + } + + pci_set_master(pdev); + pci_intx(pdev, 1); + return ata_host_activate(host, pdev->irq, ata_bmdma_interrupt, + IRQF_SHARED, &uli_sht); +} + +module_pci_driver(uli_pci_driver); |