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author | 2015-08-04 12:17:53 -0700 | |
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committer | 2015-08-04 15:44:42 -0700 | |
commit | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch) | |
tree | 1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/drivers/ata/sata_sis.c | |
parent | 98260f3884f4a202f9ca5eabed40b1354c489b29 (diff) |
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base.
It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:
commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Sat Jul 25 12:13:34 2015 +0200
Prepare v4.1.3-rt3
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.
Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/drivers/ata/sata_sis.c')
-rw-r--r-- | kernel/drivers/ata/sata_sis.c | 314 |
1 files changed, 314 insertions, 0 deletions
diff --git a/kernel/drivers/ata/sata_sis.c b/kernel/drivers/ata/sata_sis.c new file mode 100644 index 000000000..d1637ac40 --- /dev/null +++ b/kernel/drivers/ata/sata_sis.c @@ -0,0 +1,314 @@ +/* + * sata_sis.c - Silicon Integrated Systems SATA + * + * Maintained by: Uwe Koziolek + * Please ALWAYS copy linux-ide@vger.kernel.org + * on emails. + * + * Copyright 2004 Uwe Koziolek + * + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2, or (at your option) + * any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; see the file COPYING. If not, write to + * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. + * + * + * libata documentation is available via 'make {ps|pdf}docs', + * as Documentation/DocBook/libata.* + * + * Hardware documentation available under NDA. + * + */ + +#include <linux/kernel.h> +#include <linux/module.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> +#include "sis.h" + +#define DRV_NAME "sata_sis" +#define DRV_VERSION "1.0" + +enum { + sis_180 = 0, + SIS_SCR_PCI_BAR = 5, + + /* PCI configuration registers */ + SIS_GENCTL = 0x54, /* IDE General Control register */ + SIS_SCR_BASE = 0xc0, /* sata0 phy SCR registers */ + SIS180_SATA1_OFS = 0x10, /* offset from sata0->sata1 phy regs */ + SIS182_SATA1_OFS = 0x20, /* offset from sata0->sata1 phy regs */ + SIS_PMR = 0x90, /* port mapping register */ + SIS_PMR_COMBINED = 0x30, + + /* random bits */ + SIS_FLAG_CFGSCR = (1 << 30), /* host flag: SCRs via PCI cfg */ + + GENCTL_IOMAPPED_SCR = (1 << 26), /* if set, SCRs are in IO space */ +}; + +static int sis_init_one(struct pci_dev *pdev, const struct pci_device_id *ent); +static int sis_scr_read(struct ata_link *link, unsigned int sc_reg, u32 *val); +static int sis_scr_write(struct ata_link *link, unsigned int sc_reg, u32 val); + +static const struct pci_device_id sis_pci_tbl[] = { + { PCI_VDEVICE(SI, 0x0180), sis_180 }, /* SiS 964/180 */ + { PCI_VDEVICE(SI, 0x0181), sis_180 }, /* SiS 964/180 */ + { PCI_VDEVICE(SI, 0x0182), sis_180 }, /* SiS 965/965L */ + { PCI_VDEVICE(SI, 0x0183), sis_180 }, /* SiS 965/965L */ + { PCI_VDEVICE(SI, 0x1182), sis_180 }, /* SiS 966/680 */ + { PCI_VDEVICE(SI, 0x1183), sis_180 }, /* SiS 966/966L/968/680 */ + + { } /* terminate list */ +}; + +static struct pci_driver sis_pci_driver = { + .name = DRV_NAME, + .id_table = sis_pci_tbl, + .probe = sis_init_one, + .remove = ata_pci_remove_one, +#ifdef CONFIG_PM_SLEEP + .suspend = ata_pci_device_suspend, + .resume = ata_pci_device_resume, +#endif +}; + +static struct scsi_host_template sis_sht = { + ATA_BMDMA_SHT(DRV_NAME), +}; + +static struct ata_port_operations sis_ops = { + .inherits = &ata_bmdma_port_ops, + .scr_read = sis_scr_read, + .scr_write = sis_scr_write, +}; + +static const struct ata_port_info sis_port_info = { + .flags = ATA_FLAG_SATA, + .pio_mask = ATA_PIO4, + .mwdma_mask = ATA_MWDMA2, + .udma_mask = ATA_UDMA6, + .port_ops = &sis_ops, +}; + +MODULE_AUTHOR("Uwe Koziolek"); +MODULE_DESCRIPTION("low-level driver for Silicon Integrated Systems SATA controller"); +MODULE_LICENSE("GPL"); +MODULE_DEVICE_TABLE(pci, sis_pci_tbl); +MODULE_VERSION(DRV_VERSION); + +static unsigned int get_scr_cfg_addr(struct ata_link *link, unsigned int sc_reg) +{ + struct ata_port *ap = link->ap; + struct pci_dev *pdev = to_pci_dev(ap->host->dev); + unsigned int addr = SIS_SCR_BASE + (4 * sc_reg); + u8 pmr; + + if (ap->port_no) { + switch (pdev->device) { + case 0x0180: + case 0x0181: + pci_read_config_byte(pdev, SIS_PMR, &pmr); + if ((pmr & SIS_PMR_COMBINED) == 0) + addr += SIS180_SATA1_OFS; + break; + + case 0x0182: + case 0x0183: + case 0x1182: + addr += SIS182_SATA1_OFS; + break; + } + } + if (link->pmp) + addr += 0x10; + + return addr; +} + +static u32 sis_scr_cfg_read(struct ata_link *link, + unsigned int sc_reg, u32 *val) +{ + struct pci_dev *pdev = to_pci_dev(link->ap->host->dev); + unsigned int cfg_addr = get_scr_cfg_addr(link, sc_reg); + + if (sc_reg == SCR_ERROR) /* doesn't exist in PCI cfg space */ + return -EINVAL; + + pci_read_config_dword(pdev, cfg_addr, val); + return 0; +} + +static int sis_scr_cfg_write(struct ata_link *link, + unsigned int sc_reg, u32 val) +{ + struct pci_dev *pdev = to_pci_dev(link->ap->host->dev); + unsigned int cfg_addr = get_scr_cfg_addr(link, sc_reg); + + pci_write_config_dword(pdev, cfg_addr, val); + return 0; +} + +static int sis_scr_read(struct ata_link *link, unsigned int sc_reg, u32 *val) +{ + struct ata_port *ap = link->ap; + void __iomem *base = ap->ioaddr.scr_addr + link->pmp * 0x10; + + if (sc_reg > SCR_CONTROL) + return -EINVAL; + + if (ap->flags & SIS_FLAG_CFGSCR) + return sis_scr_cfg_read(link, sc_reg, val); + + *val = ioread32(base + sc_reg * 4); + return 0; +} + +static int sis_scr_write(struct ata_link *link, unsigned int sc_reg, u32 val) +{ + struct ata_port *ap = link->ap; + void __iomem *base = ap->ioaddr.scr_addr + link->pmp * 0x10; + + if (sc_reg > SCR_CONTROL) + return -EINVAL; + + if (ap->flags & SIS_FLAG_CFGSCR) + return sis_scr_cfg_write(link, sc_reg, val); + + iowrite32(val, base + (sc_reg * 4)); + return 0; +} + +static int sis_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) +{ + struct ata_port_info pi = sis_port_info; + const struct ata_port_info *ppi[] = { &pi, &pi }; + struct ata_host *host; + u32 genctl, val; + u8 pmr; + u8 port2_start = 0x20; + int i, rc; + + ata_print_version_once(&pdev->dev, DRV_VERSION); + + rc = pcim_enable_device(pdev); + if (rc) + return rc; + + /* check and see if the SCRs are in IO space or PCI cfg space */ + pci_read_config_dword(pdev, SIS_GENCTL, &genctl); + if ((genctl & GENCTL_IOMAPPED_SCR) == 0) + pi.flags |= SIS_FLAG_CFGSCR; + + /* if hardware thinks SCRs are in IO space, but there are + * no IO resources assigned, change to PCI cfg space. + */ + if ((!(pi.flags & SIS_FLAG_CFGSCR)) && + ((pci_resource_start(pdev, SIS_SCR_PCI_BAR) == 0) || + (pci_resource_len(pdev, SIS_SCR_PCI_BAR) < 128))) { + genctl &= ~GENCTL_IOMAPPED_SCR; + pci_write_config_dword(pdev, SIS_GENCTL, genctl); + pi.flags |= SIS_FLAG_CFGSCR; + } + + pci_read_config_byte(pdev, SIS_PMR, &pmr); + switch (ent->device) { + case 0x0180: + case 0x0181: + + /* The PATA-handling is provided by pata_sis */ + switch (pmr & 0x30) { + case 0x10: + ppi[1] = &sis_info133_for_sata; + break; + + case 0x30: + ppi[0] = &sis_info133_for_sata; + break; + } + if ((pmr & SIS_PMR_COMBINED) == 0) { + dev_info(&pdev->dev, + "Detected SiS 180/181/964 chipset in SATA mode\n"); + port2_start = 64; + } else { + dev_info(&pdev->dev, + "Detected SiS 180/181 chipset in combined mode\n"); + port2_start = 0; + pi.flags |= ATA_FLAG_SLAVE_POSS; + } + break; + + case 0x0182: + case 0x0183: + pci_read_config_dword(pdev, 0x6C, &val); + if (val & (1L << 31)) { + dev_info(&pdev->dev, "Detected SiS 182/965 chipset\n"); + pi.flags |= ATA_FLAG_SLAVE_POSS; + } else { + dev_info(&pdev->dev, "Detected SiS 182/965L chipset\n"); + } + break; + + case 0x1182: + dev_info(&pdev->dev, + "Detected SiS 1182/966/680 SATA controller\n"); + pi.flags |= ATA_FLAG_SLAVE_POSS; + break; + + case 0x1183: + dev_info(&pdev->dev, + "Detected SiS 1183/966/966L/968/680 controller in PATA mode\n"); + ppi[0] = &sis_info133_for_sata; + ppi[1] = &sis_info133_for_sata; + break; + } + + rc = ata_pci_bmdma_prepare_host(pdev, ppi, &host); + if (rc) + return rc; + + for (i = 0; i < 2; i++) { + struct ata_port *ap = host->ports[i]; + + if (ap->flags & ATA_FLAG_SATA && + ap->flags & ATA_FLAG_SLAVE_POSS) { + rc = ata_slave_link_init(ap); + if (rc) + return rc; + } + } + + if (!(pi.flags & SIS_FLAG_CFGSCR)) { + void __iomem *mmio; + + rc = pcim_iomap_regions(pdev, 1 << SIS_SCR_PCI_BAR, DRV_NAME); + if (rc) + return rc; + mmio = host->iomap[SIS_SCR_PCI_BAR]; + + host->ports[0]->ioaddr.scr_addr = mmio; + host->ports[1]->ioaddr.scr_addr = mmio + port2_start; + } + + pci_set_master(pdev); + pci_intx(pdev, 1); + return ata_host_activate(host, pdev->irq, ata_bmdma_interrupt, + IRQF_SHARED, &sis_sht); +} + +module_pci_driver(sis_pci_driver); |