| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Jeff Garzik | 1552 | 69.57% | 13 | 21.67% |
| Sergei Shtylyov | 349 | 15.64% | 11 | 18.33% |
| Alan Cox | 101 | 4.53% | 3 | 5.00% |
| Sergey Shtylyov | 90 | 4.03% | 5 | 8.33% |
| Tejun Heo | 86 | 3.85% | 16 | 26.67% |
| Hannes Reinecke | 24 | 1.08% | 1 | 1.67% |
| Benjamin Herrenschmidt | 9 | 0.40% | 1 | 1.67% |
| Bartlomiej Zolnierkiewicz | 5 | 0.22% | 3 | 5.00% |
| Erik Inge Bolsö | 4 | 0.18% | 1 | 1.67% |
| Joe Perches | 4 | 0.18% | 1 | 1.67% |
| Akira Iguchi | 3 | 0.13% | 1 | 1.67% |
| Thomas Gleixner | 1 | 0.04% | 1 | 1.67% |
| Arjan van de Ven | 1 | 0.04% | 1 | 1.67% |
| Axel Lin | 1 | 0.04% | 1 | 1.67% |
| Lee Jones | 1 | 0.04% | 1 | 1.67% |
| Total | 2231 | 60 |
// SPDX-License-Identifier: GPL-2.0-only /* * Libata driver for the HighPoint 371N, 372N, and 302N UDMA66 ATA controllers. * * This driver is heavily based upon: * * linux/drivers/ide/pci/hpt366.c Version 0.36 April 25, 2003 * * Copyright (C) 1999-2003 Andre Hedrick <andre@linux-ide.org> * Portions Copyright (C) 2001 Sun Microsystems, Inc. * Portions Copyright (C) 2003 Red Hat Inc * Portions Copyright (C) 2005-2010 MontaVista Software, Inc. * * * TODO * Work out best PLL policy */ #include <linux/kernel.h> #include <linux/module.h> #include <linux/pci.h> #include <linux/blkdev.h> #include <linux/delay.h> #include <scsi/scsi_host.h> #include <linux/libata.h> #define DRV_NAME "pata_hpt3x2n" #define DRV_VERSION "0.3.19" enum { PCI66 = (1 << 1), USE_DPLL = (1 << 0) }; struct hpt_clock { u8 xfer_speed; u32 timing; }; /* key for bus clock timings * bit * 0:3 data_high_time. Inactive time of DIOW_/DIOR_ for PIO and MW DMA. * cycles = value + 1 * 4:8 data_low_time. Active time of DIOW_/DIOR_ for PIO and MW DMA. * cycles = value + 1 * 9:12 cmd_high_time. Inactive time of DIOW_/DIOR_ during task file * register access. * 13:17 cmd_low_time. Active time of DIOW_/DIOR_ during task file * register access. * 18:20 udma_cycle_time. Clock cycles for UDMA xfer. * 21 CLK frequency for UDMA: 0=ATA clock, 1=dual ATA clock. * 22:24 pre_high_time. Time to initialize 1st cycle for PIO and MW DMA xfer. * 25:27 cmd_pre_high_time. Time to initialize 1st PIO cycle for task file * register access. * 28 UDMA enable. * 29 DMA enable. * 30 PIO_MST enable. If set, the chip is in bus master mode during * PIO xfer. * 31 FIFO enable. Only for PIO. */ /* 66MHz DPLL clocks */ static struct hpt_clock hpt3x2n_clocks[] = { { XFER_UDMA_7, 0x1c869c62 }, { XFER_UDMA_6, 0x1c869c62 }, { XFER_UDMA_5, 0x1c8a9c62 }, { XFER_UDMA_4, 0x1c8a9c62 }, { XFER_UDMA_3, 0x1c8e9c62 }, { XFER_UDMA_2, 0x1c929c62 }, { XFER_UDMA_1, 0x1c9a9c62 }, { XFER_UDMA_0, 0x1c829c62 }, { XFER_MW_DMA_2, 0x2c829c62 }, { XFER_MW_DMA_1, 0x2c829c66 }, { XFER_MW_DMA_0, 0x2c829d2e }, { XFER_PIO_4, 0x0c829c62 }, { XFER_PIO_3, 0x0c829c84 }, { XFER_PIO_2, 0x0c829ca6 }, { XFER_PIO_1, 0x0d029d26 }, { XFER_PIO_0, 0x0d029d5e }, }; /** * hpt3x2n_find_mode - reset the hpt3x2n bus * @ap: ATA port * @speed: transfer mode * * Return the 32bit register programming information for this channel * that matches the speed provided. For the moment the clocks table * is hard coded but easy to change. This will be needed if we use * different DPLLs */ static u32 hpt3x2n_find_mode(struct ata_port *ap, int speed) { struct hpt_clock *clocks = hpt3x2n_clocks; while (clocks->xfer_speed) { if (clocks->xfer_speed == speed) return clocks->timing; clocks++; } BUG(); return 0xffffffffU; /* silence compiler warning */ } /** * hpt372n_filter - mode selection filter * @adev: ATA device * @mask: mode mask * * The Marvell bridge chips used on the HighPoint SATA cards do not seem * to support the UltraDMA modes 1, 2, and 3 as well as any MWDMA modes... */ static unsigned int hpt372n_filter(struct ata_device *adev, unsigned int mask) { if (ata_id_is_sata(adev->id)) mask &= ~((0xE << ATA_SHIFT_UDMA) | ATA_MASK_MWDMA); return mask; } /** * hpt3x2n_cable_detect - Detect the cable type * @ap: ATA port to detect on * * Return the cable type attached to this port */ static int hpt3x2n_cable_detect(struct ata_port *ap) { u8 scr2, ata66; struct pci_dev *pdev = to_pci_dev(ap->host->dev); pci_read_config_byte(pdev, 0x5B, &scr2); pci_write_config_byte(pdev, 0x5B, scr2 & ~0x01); udelay(10); /* debounce */ /* Cable register now active */ pci_read_config_byte(pdev, 0x5A, &ata66); /* Restore state */ pci_write_config_byte(pdev, 0x5B, scr2); if (ata66 & (2 >> ap->port_no)) return ATA_CBL_PATA40; else return ATA_CBL_PATA80; } /** * hpt3x2n_pre_reset - reset the hpt3x2n bus * @link: ATA link to reset * @deadline: deadline jiffies for the operation * * Perform the initial reset handling for the 3x2n series controllers. * Reset the hardware and state machine, */ static int hpt3x2n_pre_reset(struct ata_link *link, unsigned long deadline) { struct ata_port *ap = link->ap; struct pci_dev *pdev = to_pci_dev(ap->host->dev); static const struct pci_bits hpt3x2n_enable_bits[] = { { 0x50, 1, 0x04, 0x04 }, { 0x54, 1, 0x04, 0x04 } }; u8 mcr2; if (!pci_test_config_bits(pdev, &hpt3x2n_enable_bits[ap->port_no])) return -ENOENT; /* Reset the state machine */ pci_write_config_byte(pdev, 0x50 + 4 * ap->port_no, 0x37); udelay(100); /* Fast interrupt prediction disable, hold off interrupt disable */ pci_read_config_byte(pdev, 0x51 + 4 * ap->port_no, &mcr2); mcr2 &= ~0x07; pci_write_config_byte(pdev, 0x51 + 4 * ap->port_no, mcr2); return ata_sff_prereset(link, deadline); } static void hpt3x2n_set_mode(struct ata_port *ap, struct ata_device *adev, u8 mode) { struct pci_dev *pdev = to_pci_dev(ap->host->dev); int addr = 0x40 + 4 * (adev->devno + 2 * ap->port_no); u32 reg, timing, mask; /* Determine timing mask and find matching mode entry */ if (mode < XFER_MW_DMA_0) mask = 0xcfc3ffff; else if (mode < XFER_UDMA_0) mask = 0x31c001ff; else mask = 0x303c0000; timing = hpt3x2n_find_mode(ap, mode); pci_read_config_dword(pdev, addr, ®); reg = (reg & ~mask) | (timing & mask); pci_write_config_dword(pdev, addr, reg); } /** * hpt3x2n_set_piomode - PIO setup * @ap: ATA interface * @adev: device on the interface * * Perform PIO mode setup. */ static void hpt3x2n_set_piomode(struct ata_port *ap, struct ata_device *adev) { hpt3x2n_set_mode(ap, adev, adev->pio_mode); } /** * hpt3x2n_set_dmamode - DMA timing setup * @ap: ATA interface * @adev: Device being configured * * Set up the channel for MWDMA or UDMA modes. */ static void hpt3x2n_set_dmamode(struct ata_port *ap, struct ata_device *adev) { hpt3x2n_set_mode(ap, adev, adev->dma_mode); } /** * hpt3x2n_bmdma_stop - DMA engine stop * @qc: ATA command * * Clean up after the HPT3x2n and later DMA engine */ static void hpt3x2n_bmdma_stop(struct ata_queued_cmd *qc) { struct ata_port *ap = qc->ap; struct pci_dev *pdev = to_pci_dev(ap->host->dev); int mscreg = 0x50 + 4 * ap->port_no; u8 bwsr_stat, msc_stat; pci_read_config_byte(pdev, 0x6A, &bwsr_stat); pci_read_config_byte(pdev, mscreg, &msc_stat); if (bwsr_stat & (1 << ap->port_no)) pci_write_config_byte(pdev, mscreg, msc_stat | 0x30); ata_bmdma_stop(qc); } /** * hpt3x2n_set_clock - clock control * @ap: ATA port * @source: 0x21 or 0x23 for PLL or PCI sourced clock * * Switch the ATA bus clock between the PLL and PCI clock sources * while correctly isolating the bus and resetting internal logic * * We must use the DPLL for * - writing * - second channel UDMA7 (SATA ports) or higher * - 66MHz PCI * * or we will underclock the device and get reduced performance. */ static void hpt3x2n_set_clock(struct ata_port *ap, int source) { void __iomem *bmdma = ap->ioaddr.bmdma_addr - ap->port_no * 8; /* Tristate the bus */ iowrite8(0x80, bmdma+0x73); iowrite8(0x80, bmdma+0x77); /* Switch clock and reset channels */ iowrite8(source, bmdma+0x7B); iowrite8(0xC0, bmdma+0x79); /* Reset state machines, avoid enabling the disabled channels */ iowrite8(ioread8(bmdma+0x70) | 0x32, bmdma+0x70); iowrite8(ioread8(bmdma+0x74) | 0x32, bmdma+0x74); /* Complete reset */ iowrite8(0x00, bmdma+0x79); /* Reconnect channels to bus */ iowrite8(0x00, bmdma+0x73); iowrite8(0x00, bmdma+0x77); } static int hpt3x2n_use_dpll(struct ata_port *ap, int writing) { long flags = (long)ap->host->private_data; /* See if we should use the DPLL */ if (writing) return USE_DPLL; /* Needed for write */ if (flags & PCI66) return USE_DPLL; /* Needed at 66Mhz */ return 0; } static int hpt3x2n_qc_defer(struct ata_queued_cmd *qc) { struct ata_port *ap = qc->ap; struct ata_port *alt = ap->host->ports[ap->port_no ^ 1]; int rc, flags = (long)ap->host->private_data; int dpll = hpt3x2n_use_dpll(ap, qc->tf.flags & ATA_TFLAG_WRITE); /* First apply the usual rules */ rc = ata_std_qc_defer(qc); if (rc != 0) return rc; if ((flags & USE_DPLL) != dpll && alt->qc_active) return ATA_DEFER_PORT; return 0; } static unsigned int hpt3x2n_qc_issue(struct ata_queued_cmd *qc) { struct ata_port *ap = qc->ap; int flags = (long)ap->host->private_data; int dpll = hpt3x2n_use_dpll(ap, qc->tf.flags & ATA_TFLAG_WRITE); if ((flags & USE_DPLL) != dpll) { flags &= ~USE_DPLL; flags |= dpll; ap->host->private_data = (void *)(long)flags; hpt3x2n_set_clock(ap, dpll ? 0x21 : 0x23); } return ata_bmdma_qc_issue(qc); } static struct scsi_host_template hpt3x2n_sht = { ATA_BMDMA_SHT(DRV_NAME), }; /* * Configuration for HPT302N/371N. */ static struct ata_port_operations hpt3xxn_port_ops = { .inherits = &ata_bmdma_port_ops, .bmdma_stop = hpt3x2n_bmdma_stop, .qc_defer = hpt3x2n_qc_defer, .qc_issue = hpt3x2n_qc_issue, .cable_detect = hpt3x2n_cable_detect, .set_piomode = hpt3x2n_set_piomode, .set_dmamode = hpt3x2n_set_dmamode, .prereset = hpt3x2n_pre_reset, }; /* * Configuration for HPT372N. Same as 302N/371N but we have a mode filter. */ static struct ata_port_operations hpt372n_port_ops = { .inherits = &hpt3xxn_port_ops, .mode_filter = &hpt372n_filter, }; /** * hpt3xn_calibrate_dpll - Calibrate the DPLL loop * @dev: PCI device * * Perform a calibration cycle on the HPT3xN DPLL. Returns 1 if this * succeeds */ static int hpt3xn_calibrate_dpll(struct pci_dev *dev) { u8 reg5b; u32 reg5c; int tries; for (tries = 0; tries < 0x5000; tries++) { udelay(50); pci_read_config_byte(dev, 0x5b, ®5b); if (reg5b & 0x80) { /* See if it stays set */ for (tries = 0; tries < 0x1000; tries++) { pci_read_config_byte(dev, 0x5b, ®5b); /* Failed ? */ if ((reg5b & 0x80) == 0) return 0; } /* Turn off tuning, we have the DPLL set */ pci_read_config_dword(dev, 0x5c, ®5c); pci_write_config_dword(dev, 0x5c, reg5c & ~0x100); return 1; } } /* Never went stable */ return 0; } static int hpt3x2n_pci_clock(struct pci_dev *pdev, unsigned int base) { unsigned int freq; u32 fcnt; /* * Some devices do not let this value be accessed via PCI space * according to the old driver. */ fcnt = inl(pci_resource_start(pdev, 4) + 0x90); if ((fcnt >> 12) != 0xABCDE) { u32 total = 0; int i; u16 sr; dev_warn(&pdev->dev, "BIOS clock data not set\n"); /* This is the process the HPT371 BIOS is reported to use */ for (i = 0; i < 128; i++) { pci_read_config_word(pdev, 0x78, &sr); total += sr & 0x1FF; udelay(15); } fcnt = total / 128; } fcnt &= 0x1FF; freq = (fcnt * base) / 192; /* in MHz */ /* Clamp to bands */ if (freq < 40) return 33; if (freq < 45) return 40; if (freq < 55) return 50; return 66; } /** * hpt3x2n_init_one - Initialise an HPT37X/302 * @dev: PCI device * @id: Entry in match table * * Initialise an HPT3x2n device. There are some interesting complications * here. Firstly the chip may report 366 and be one of several variants. * Secondly all the timings depend on the clock for the chip which we must * detect and look up * * This is the known chip mappings. It may be missing a couple of later * releases. * * Chip version PCI Rev Notes * HPT372 4 (HPT366) 5 Other driver * HPT372N 4 (HPT366) 6 UDMA133 * HPT372 5 (HPT372) 1 Other driver * HPT372N 5 (HPT372) 2 UDMA133 * HPT302 6 (HPT302) * Other driver * HPT302N 6 (HPT302) > 1 UDMA133 * HPT371 7 (HPT371) * Other driver * HPT371N 7 (HPT371) > 1 UDMA133 * HPT374 8 (HPT374) * Other driver * HPT372N 9 (HPT372N) * UDMA133 * * (1) UDMA133 support depends on the bus clock */ static int hpt3x2n_init_one(struct pci_dev *dev, const struct pci_device_id *id) { /* HPT372N - UDMA133 */ static const struct ata_port_info info_hpt372n = { .flags = ATA_FLAG_SLAVE_POSS, .pio_mask = ATA_PIO4, .mwdma_mask = ATA_MWDMA2, .udma_mask = ATA_UDMA6, .port_ops = &hpt372n_port_ops }; /* HPT302N and HPT371N - UDMA133 */ static const struct ata_port_info info_hpt3xxn = { .flags = ATA_FLAG_SLAVE_POSS, .pio_mask = ATA_PIO4, .mwdma_mask = ATA_MWDMA2, .udma_mask = ATA_UDMA6, .port_ops = &hpt3xxn_port_ops }; const struct ata_port_info *ppi[] = { &info_hpt3xxn, NULL }; u8 rev = dev->revision; u8 irqmask; unsigned int pci_mhz; unsigned int f_low, f_high; int adjust; unsigned long iobase = pci_resource_start(dev, 4); void *hpriv = (void *)USE_DPLL; int rc; rc = pcim_enable_device(dev); if (rc) return rc; switch (dev->device) { case PCI_DEVICE_ID_TTI_HPT366: /* 372N if rev >= 6 */ if (rev < 6) return -ENODEV; goto hpt372n; case PCI_DEVICE_ID_TTI_HPT371: /* 371N if rev >= 2 */ if (rev < 2) return -ENODEV; break; case PCI_DEVICE_ID_TTI_HPT372: /* 372N if rev >= 2 */ if (rev < 2) return -ENODEV; goto hpt372n; case PCI_DEVICE_ID_TTI_HPT302: /* 302N if rev >= 2 */ if (rev < 2) return -ENODEV; break; case PCI_DEVICE_ID_TTI_HPT372N: hpt372n: ppi[0] = &info_hpt372n; break; default: dev_err(&dev->dev,"PCI table is bogus, please report (%d)\n", dev->device); return -ENODEV; } /* Ok so this is a chip we support */ pci_write_config_byte(dev, PCI_CACHE_LINE_SIZE, (L1_CACHE_BYTES / 4)); pci_write_config_byte(dev, PCI_LATENCY_TIMER, 0x78); pci_write_config_byte(dev, PCI_MIN_GNT, 0x08); pci_write_config_byte(dev, PCI_MAX_LAT, 0x08); pci_read_config_byte(dev, 0x5A, &irqmask); irqmask &= ~0x10; pci_write_config_byte(dev, 0x5a, irqmask); /* * HPT371 chips physically have only one channel, the secondary one, * but the primary channel registers do exist! Go figure... * So, we manually disable the non-existing channel here * (if the BIOS hasn't done this already). */ if (dev->device == PCI_DEVICE_ID_TTI_HPT371) { u8 mcr1; pci_read_config_byte(dev, 0x50, &mcr1); mcr1 &= ~0x04; pci_write_config_byte(dev, 0x50, mcr1); } /* * Tune the PLL. HPT recommend using 75 for SATA, 66 for UDMA133 or * 50 for UDMA100. Right now we always use 66 */ pci_mhz = hpt3x2n_pci_clock(dev, 77); f_low = (pci_mhz * 48) / 66; /* PCI Mhz for 66Mhz DPLL */ f_high = f_low + 2; /* Tolerance */ pci_write_config_dword(dev, 0x5C, (f_high << 16) | f_low | 0x100); /* PLL clock */ pci_write_config_byte(dev, 0x5B, 0x21); /* Unlike the 37x we don't try jiggling the frequency */ for (adjust = 0; adjust < 8; adjust++) { if (hpt3xn_calibrate_dpll(dev)) break; pci_write_config_dword(dev, 0x5C, (f_high << 16) | f_low); } if (adjust == 8) { dev_err(&dev->dev, "DPLL did not stabilize!\n"); return -ENODEV; } dev_info(&dev->dev, "bus clock %dMHz, using 66MHz DPLL\n", pci_mhz); /* * Set our private data up. We only need a few flags * so we use it directly. */ if (pci_mhz > 60) hpriv = (void *)(PCI66 | USE_DPLL); /* * On HPT371N, if ATA clock is 66 MHz we must set bit 2 in * the MISC. register to stretch the UltraDMA Tss timing. * NOTE: This register is only writeable via I/O space. */ if (dev->device == PCI_DEVICE_ID_TTI_HPT371) outb(inb(iobase + 0x9c) | 0x04, iobase + 0x9c); /* Now kick off ATA set up */ return ata_pci_bmdma_init_one(dev, ppi, &hpt3x2n_sht, hpriv, 0); } static const struct pci_device_id hpt3x2n[] = { { PCI_VDEVICE(TTI, PCI_DEVICE_ID_TTI_HPT366), }, { PCI_VDEVICE(TTI, PCI_DEVICE_ID_TTI_HPT371), }, { PCI_VDEVICE(TTI, PCI_DEVICE_ID_TTI_HPT372), }, { PCI_VDEVICE(TTI, PCI_DEVICE_ID_TTI_HPT302), }, { PCI_VDEVICE(TTI, PCI_DEVICE_ID_TTI_HPT372N), }, { }, }; static struct pci_driver hpt3x2n_pci_driver = { .name = DRV_NAME, .id_table = hpt3x2n, .probe = hpt3x2n_init_one, .remove = ata_pci_remove_one }; module_pci_driver(hpt3x2n_pci_driver); MODULE_AUTHOR("Alan Cox"); MODULE_DESCRIPTION("low-level driver for the Highpoint HPT3xxN"); MODULE_LICENSE("GPL"); MODULE_DEVICE_TABLE(pci, hpt3x2n); MODULE_VERSION(DRV_VERSION);
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