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