Author | Tokens | Token Proportion | Commits | Commit Proportion |
---|---|---|---|---|
John(Jung-Ik) Lee | 2113 | 92.55% | 2 | 10.53% |
Bartlomiej Zolnierkiewicz | 90 | 3.94% | 4 | 21.05% |
Hannes Reinecke | 57 | 2.50% | 1 | 5.26% |
Joe Perches | 5 | 0.22% | 2 | 10.53% |
Gustavo A. R. Silva | 4 | 0.18% | 1 | 5.26% |
Avi Kivity | 3 | 0.13% | 1 | 5.26% |
Quentin Lambert | 3 | 0.13% | 1 | 5.26% |
Thomas Gleixner | 2 | 0.09% | 1 | 5.26% |
Axel Lin | 1 | 0.04% | 1 | 5.26% |
Tejun Heo | 1 | 0.04% | 1 | 5.26% |
Bart Van Assche | 1 | 0.04% | 1 | 5.26% |
Christoph Hellwig | 1 | 0.04% | 1 | 5.26% |
Denis Efremov | 1 | 0.04% | 1 | 5.26% |
Jingoo Han | 1 | 0.04% | 1 | 5.26% |
Total | 2283 | 19 |
// SPDX-License-Identifier: GPL-2.0-or-later /* * pata_atp867x.c - ARTOP 867X 64bit 4-channel UDMA133 ATA controller driver * * (C) 2009 Google Inc. John(Jung-Ik) Lee <jilee@google.com> * * Per Atp867 data sheet rev 1.2, Acard. * Based in part on early ide code from * 2003-2004 by Eric Uhrhane, Google, Inc. * * TODO: * 1. RAID features [comparison, XOR, striping, mirroring, etc.] */ #include <linux/kernel.h> #include <linux/module.h> #include <linux/pci.h> #include <linux/blkdev.h> #include <linux/delay.h> #include <linux/device.h> #include <linux/gfp.h> #include <scsi/scsi_host.h> #include <linux/libata.h> #define DRV_NAME "pata_atp867x" #define DRV_VERSION "0.7.5" /* * IO Registers * Note that all runtime hot priv ports are cached in ap private_data */ enum { ATP867X_IO_CHANNEL_OFFSET = 0x10, /* * IO Register Bitfields */ ATP867X_IO_PIOSPD_ACTIVE_SHIFT = 4, ATP867X_IO_PIOSPD_RECOVER_SHIFT = 0, ATP867X_IO_DMAMODE_MSTR_SHIFT = 0, ATP867X_IO_DMAMODE_MSTR_MASK = 0x07, ATP867X_IO_DMAMODE_SLAVE_SHIFT = 4, ATP867X_IO_DMAMODE_SLAVE_MASK = 0x70, ATP867X_IO_DMAMODE_UDMA_6 = 0x07, ATP867X_IO_DMAMODE_UDMA_5 = 0x06, ATP867X_IO_DMAMODE_UDMA_4 = 0x05, ATP867X_IO_DMAMODE_UDMA_3 = 0x04, ATP867X_IO_DMAMODE_UDMA_2 = 0x03, ATP867X_IO_DMAMODE_UDMA_1 = 0x02, ATP867X_IO_DMAMODE_UDMA_0 = 0x01, ATP867X_IO_DMAMODE_DISABLE = 0x00, ATP867X_IO_SYS_INFO_66MHZ = 0x04, ATP867X_IO_SYS_INFO_SLOW_UDMA5 = 0x02, ATP867X_IO_SYS_MASK_RESERVED = (~0xf1), ATP867X_IO_PORTSPD_VAL = 0x1143, ATP867X_PREREAD_VAL = 0x0200, ATP867X_NUM_PORTS = 4, ATP867X_BAR_IOBASE = 0, ATP867X_BAR_ROMBASE = 6, }; #define ATP867X_IOBASE(ap) ((ap)->host->iomap[0]) #define ATP867X_SYS_INFO(ap) (0x3F + ATP867X_IOBASE(ap)) #define ATP867X_IO_PORTBASE(ap, port) (0x00 + ATP867X_IOBASE(ap) + \ (port) * ATP867X_IO_CHANNEL_OFFSET) #define ATP867X_IO_DMABASE(ap, port) (0x40 + \ ATP867X_IO_PORTBASE((ap), (port))) #define ATP867X_IO_STATUS(ap, port) (0x07 + \ ATP867X_IO_PORTBASE((ap), (port))) #define ATP867X_IO_ALTSTATUS(ap, port) (0x0E + \ ATP867X_IO_PORTBASE((ap), (port))) /* * hot priv ports */ #define ATP867X_IO_MSTRPIOSPD(ap, port) (0x08 + \ ATP867X_IO_DMABASE((ap), (port))) #define ATP867X_IO_SLAVPIOSPD(ap, port) (0x09 + \ ATP867X_IO_DMABASE((ap), (port))) #define ATP867X_IO_8BPIOSPD(ap, port) (0x0A + \ ATP867X_IO_DMABASE((ap), (port))) #define ATP867X_IO_DMAMODE(ap, port) (0x0B + \ ATP867X_IO_DMABASE((ap), (port))) #define ATP867X_IO_PORTSPD(ap, port) (0x4A + \ ATP867X_IO_PORTBASE((ap), (port))) #define ATP867X_IO_PREREAD(ap, port) (0x4C + \ ATP867X_IO_PORTBASE((ap), (port))) struct atp867x_priv { void __iomem *dma_mode; void __iomem *mstr_piospd; void __iomem *slave_piospd; void __iomem *eightb_piospd; int pci66mhz; }; static void atp867x_set_dmamode(struct ata_port *ap, struct ata_device *adev) { struct pci_dev *pdev = to_pci_dev(ap->host->dev); struct atp867x_priv *dp = ap->private_data; u8 speed = adev->dma_mode; u8 b; u8 mode = speed - XFER_UDMA_0 + 1; /* * Doc 6.6.9: decrease the udma mode value by 1 for safer UDMA speed * on 66MHz bus * rev-A: UDMA_1~4 (5, 6 no change) * rev-B: all UDMA modes * UDMA_0 stays not to disable UDMA */ if (dp->pci66mhz && mode > ATP867X_IO_DMAMODE_UDMA_0 && (pdev->device == PCI_DEVICE_ID_ARTOP_ATP867B || mode < ATP867X_IO_DMAMODE_UDMA_5)) mode--; b = ioread8(dp->dma_mode); if (adev->devno & 1) { b = (b & ~ATP867X_IO_DMAMODE_SLAVE_MASK) | (mode << ATP867X_IO_DMAMODE_SLAVE_SHIFT); } else { b = (b & ~ATP867X_IO_DMAMODE_MSTR_MASK) | (mode << ATP867X_IO_DMAMODE_MSTR_SHIFT); } iowrite8(b, dp->dma_mode); } static int atp867x_get_active_clocks_shifted(struct ata_port *ap, unsigned int clk) { struct atp867x_priv *dp = ap->private_data; unsigned char clocks = clk; /* * Doc 6.6.9: increase the clock value by 1 for safer PIO speed * on 66MHz bus */ if (dp->pci66mhz) clocks++; switch (clocks) { case 0: clocks = 1; break; case 1 ... 6: break; default: ata_port_warn(ap, "ATP867X: active %dclk is invalid. " "Using 12clk.\n", clk); fallthrough; case 9 ... 12: clocks = 7; /* 12 clk */ break; case 7: case 8: /* default 8 clk */ clocks = 0; goto active_clock_shift_done; } active_clock_shift_done: return clocks << ATP867X_IO_PIOSPD_ACTIVE_SHIFT; } static int atp867x_get_recover_clocks_shifted(struct ata_port *ap, unsigned int clk) { unsigned char clocks = clk; switch (clocks) { case 0: clocks = 1; break; case 1 ... 11: break; case 13: case 14: --clocks; /* by the spec */ break; case 15: break; default: ata_port_warn(ap, "ATP867X: recover %dclk is invalid. " "Using default 12clk.\n", clk); fallthrough; case 12: /* default 12 clk */ clocks = 0; break; } return clocks << ATP867X_IO_PIOSPD_RECOVER_SHIFT; } static void atp867x_set_piomode(struct ata_port *ap, struct ata_device *adev) { struct ata_device *peer = ata_dev_pair(adev); struct atp867x_priv *dp = ap->private_data; u8 speed = adev->pio_mode; struct ata_timing t, p; int T, UT; u8 b; T = 1000000000 / 33333; UT = T / 4; ata_timing_compute(adev, speed, &t, T, UT); if (peer && peer->pio_mode) { ata_timing_compute(peer, peer->pio_mode, &p, T, UT); ata_timing_merge(&p, &t, &t, ATA_TIMING_8BIT); } b = ioread8(dp->dma_mode); if (adev->devno & 1) b = (b & ~ATP867X_IO_DMAMODE_SLAVE_MASK); else b = (b & ~ATP867X_IO_DMAMODE_MSTR_MASK); iowrite8(b, dp->dma_mode); b = atp867x_get_active_clocks_shifted(ap, t.active) | atp867x_get_recover_clocks_shifted(ap, t.recover); if (adev->devno & 1) iowrite8(b, dp->slave_piospd); else iowrite8(b, dp->mstr_piospd); b = atp867x_get_active_clocks_shifted(ap, t.act8b) | atp867x_get_recover_clocks_shifted(ap, t.rec8b); iowrite8(b, dp->eightb_piospd); } static int atp867x_cable_override(struct pci_dev *pdev) { if (pdev->subsystem_vendor == PCI_VENDOR_ID_ARTOP && (pdev->subsystem_device == PCI_DEVICE_ID_ARTOP_ATP867A || pdev->subsystem_device == PCI_DEVICE_ID_ARTOP_ATP867B)) { return 1; } return 0; } static int atp867x_cable_detect(struct ata_port *ap) { struct pci_dev *pdev = to_pci_dev(ap->host->dev); if (atp867x_cable_override(pdev)) return ATA_CBL_PATA40_SHORT; return ATA_CBL_PATA_UNK; } static const struct scsi_host_template atp867x_sht = { ATA_BMDMA_SHT(DRV_NAME), }; static struct ata_port_operations atp867x_ops = { .inherits = &ata_bmdma_port_ops, .cable_detect = atp867x_cable_detect, .set_piomode = atp867x_set_piomode, .set_dmamode = atp867x_set_dmamode, }; static void atp867x_check_res(struct pci_dev *pdev) { int i; unsigned long start, len; /* Check the PCI resources for this channel are enabled */ for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) { start = pci_resource_start(pdev, i); len = pci_resource_len(pdev, i); dev_dbg(&pdev->dev, "ATP867X: resource start:len=%lx:%lx\n", start, len); } } static void atp867x_check_ports(struct ata_port *ap, int port) { struct ata_ioports *ioaddr = &ap->ioaddr; struct atp867x_priv *dp = ap->private_data; ata_port_dbg(ap, "ATP867X: port[%d] addresses\n" " cmd_addr =0x%lx, 0x%lx\n" " ctl_addr =0x%lx, 0x%lx\n" " bmdma_addr =0x%lx, 0x%lx\n" " data_addr =0x%lx\n" " error_addr =0x%lx\n" " feature_addr =0x%lx\n" " nsect_addr =0x%lx\n" " lbal_addr =0x%lx\n" " lbam_addr =0x%lx\n" " lbah_addr =0x%lx\n" " device_addr =0x%lx\n" " status_addr =0x%lx\n" " command_addr =0x%lx\n" " dp->dma_mode =0x%lx\n" " dp->mstr_piospd =0x%lx\n" " dp->slave_piospd =0x%lx\n" " dp->eightb_piospd =0x%lx\n" " dp->pci66mhz =0x%lx\n", port, (unsigned long)ioaddr->cmd_addr, (unsigned long)ATP867X_IO_PORTBASE(ap, port), (unsigned long)ioaddr->ctl_addr, (unsigned long)ATP867X_IO_ALTSTATUS(ap, port), (unsigned long)ioaddr->bmdma_addr, (unsigned long)ATP867X_IO_DMABASE(ap, port), (unsigned long)ioaddr->data_addr, (unsigned long)ioaddr->error_addr, (unsigned long)ioaddr->feature_addr, (unsigned long)ioaddr->nsect_addr, (unsigned long)ioaddr->lbal_addr, (unsigned long)ioaddr->lbam_addr, (unsigned long)ioaddr->lbah_addr, (unsigned long)ioaddr->device_addr, (unsigned long)ioaddr->status_addr, (unsigned long)ioaddr->command_addr, (unsigned long)dp->dma_mode, (unsigned long)dp->mstr_piospd, (unsigned long)dp->slave_piospd, (unsigned long)dp->eightb_piospd, (unsigned long)dp->pci66mhz); } static int atp867x_set_priv(struct ata_port *ap) { struct pci_dev *pdev = to_pci_dev(ap->host->dev); struct atp867x_priv *dp; int port = ap->port_no; dp = ap->private_data = devm_kzalloc(&pdev->dev, sizeof(*dp), GFP_KERNEL); if (dp == NULL) return -ENOMEM; dp->dma_mode = ATP867X_IO_DMAMODE(ap, port); dp->mstr_piospd = ATP867X_IO_MSTRPIOSPD(ap, port); dp->slave_piospd = ATP867X_IO_SLAVPIOSPD(ap, port); dp->eightb_piospd = ATP867X_IO_8BPIOSPD(ap, port); dp->pci66mhz = ioread8(ATP867X_SYS_INFO(ap)) & ATP867X_IO_SYS_INFO_66MHZ; return 0; } static void atp867x_fixup(struct ata_host *host) { struct pci_dev *pdev = to_pci_dev(host->dev); struct ata_port *ap = host->ports[0]; int i; u8 v; /* * Broken BIOS might not set latency high enough */ pci_read_config_byte(pdev, PCI_LATENCY_TIMER, &v); if (v < 0x80) { v = 0x80; pci_write_config_byte(pdev, PCI_LATENCY_TIMER, v); dev_dbg(&pdev->dev, "ATP867X: set latency timer to %d\n", v); } /* * init 8bit io ports speed(0aaarrrr) to 43h and * init udma modes of master/slave to 0/0(11h) */ for (i = 0; i < ATP867X_NUM_PORTS; i++) iowrite16(ATP867X_IO_PORTSPD_VAL, ATP867X_IO_PORTSPD(ap, i)); /* * init PreREAD counts */ for (i = 0; i < ATP867X_NUM_PORTS; i++) iowrite16(ATP867X_PREREAD_VAL, ATP867X_IO_PREREAD(ap, i)); v = ioread8(ATP867X_IOBASE(ap) + 0x28); v &= 0xcf; /* Enable INTA#: bit4=0 means enable */ v |= 0xc0; /* Enable PCI burst, MRM & not immediate interrupts */ iowrite8(v, ATP867X_IOBASE(ap) + 0x28); /* * Turn off the over clocked udma5 mode, only for Rev-B */ v = ioread8(ATP867X_SYS_INFO(ap)); v &= ATP867X_IO_SYS_MASK_RESERVED; if (pdev->device == PCI_DEVICE_ID_ARTOP_ATP867B) v |= ATP867X_IO_SYS_INFO_SLOW_UDMA5; iowrite8(v, ATP867X_SYS_INFO(ap)); } static int atp867x_ata_pci_sff_init_host(struct ata_host *host) { struct device *gdev = host->dev; struct pci_dev *pdev = to_pci_dev(gdev); unsigned int mask = 0; int i, rc; /* * do not map rombase */ rc = pcim_iomap_regions(pdev, 1 << ATP867X_BAR_IOBASE, DRV_NAME); if (rc == -EBUSY) pcim_pin_device(pdev); if (rc) return rc; host->iomap = pcim_iomap_table(pdev); atp867x_check_res(pdev); for (i = 0; i < PCI_STD_NUM_BARS; i++) dev_dbg(gdev, "ATP867X: iomap[%d]=0x%p\n", i, host->iomap[i]); /* * request, iomap BARs and init port addresses accordingly */ for (i = 0; i < host->n_ports; i++) { struct ata_port *ap = host->ports[i]; struct ata_ioports *ioaddr = &ap->ioaddr; ioaddr->cmd_addr = ATP867X_IO_PORTBASE(ap, i); ioaddr->ctl_addr = ioaddr->altstatus_addr = ATP867X_IO_ALTSTATUS(ap, i); ioaddr->bmdma_addr = ATP867X_IO_DMABASE(ap, i); ata_sff_std_ports(ioaddr); rc = atp867x_set_priv(ap); if (rc) return rc; atp867x_check_ports(ap, i); ata_port_desc(ap, "cmd 0x%lx ctl 0x%lx", (unsigned long)ioaddr->cmd_addr, (unsigned long)ioaddr->ctl_addr); ata_port_desc(ap, "bmdma 0x%lx", (unsigned long)ioaddr->bmdma_addr); mask |= 1 << i; } if (!mask) { dev_err(gdev, "no available native port\n"); return -ENODEV; } atp867x_fixup(host); return dma_set_mask_and_coherent(&pdev->dev, ATA_DMA_MASK); } static int atp867x_init_one(struct pci_dev *pdev, const struct pci_device_id *id) { static const struct ata_port_info info_867x = { .flags = ATA_FLAG_SLAVE_POSS, .pio_mask = ATA_PIO4, .udma_mask = ATA_UDMA6, .port_ops = &atp867x_ops, }; struct ata_host *host; const struct ata_port_info *ppi[] = { &info_867x, NULL }; int rc; ata_print_version_once(&pdev->dev, DRV_VERSION); rc = pcim_enable_device(pdev); if (rc) return rc; dev_info(&pdev->dev, "ATP867X: ATP867 ATA UDMA133 controller (rev %02X)", pdev->device); host = ata_host_alloc_pinfo(&pdev->dev, ppi, ATP867X_NUM_PORTS); if (!host) { dev_err(&pdev->dev, "failed to allocate ATA host\n"); rc = -ENOMEM; goto err_out; } rc = atp867x_ata_pci_sff_init_host(host); if (rc) { dev_err(&pdev->dev, "failed to init host\n"); goto err_out; } pci_set_master(pdev); rc = ata_host_activate(host, pdev->irq, ata_bmdma_interrupt, IRQF_SHARED, &atp867x_sht); if (rc) dev_err(&pdev->dev, "failed to activate host\n"); err_out: return rc; } #ifdef CONFIG_PM_SLEEP static int atp867x_reinit_one(struct pci_dev *pdev) { struct ata_host *host = pci_get_drvdata(pdev); int rc; rc = ata_pci_device_do_resume(pdev); if (rc) return rc; atp867x_fixup(host); ata_host_resume(host); return 0; } #endif static struct pci_device_id atp867x_pci_tbl[] = { { PCI_VDEVICE(ARTOP, PCI_DEVICE_ID_ARTOP_ATP867A), 0 }, { PCI_VDEVICE(ARTOP, PCI_DEVICE_ID_ARTOP_ATP867B), 0 }, { }, }; static struct pci_driver atp867x_driver = { .name = DRV_NAME, .id_table = atp867x_pci_tbl, .probe = atp867x_init_one, .remove = ata_pci_remove_one, #ifdef CONFIG_PM_SLEEP .suspend = ata_pci_device_suspend, .resume = atp867x_reinit_one, #endif }; module_pci_driver(atp867x_driver); MODULE_AUTHOR("John(Jung-Ik) Lee, Google Inc."); MODULE_DESCRIPTION("low level driver for Artop/Acard 867x ATA controller"); MODULE_LICENSE("GPL"); MODULE_DEVICE_TABLE(pci, atp867x_pci_tbl); MODULE_VERSION(DRV_VERSION);
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