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drivers/ata/pata_pdc2027x.c
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// SPDX-License-Identifier: GPL-2.0-or-later |
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/* * Promise PATA TX2/TX4/TX2000/133 IDE driver for pdc20268 to pdc20277. * |
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* Ported to libata by: * Albert Lee <albertcc@tw.ibm.com> IBM Corporation * * Copyright (C) 1998-2002 Andre Hedrick <andre@linux-ide.org> * Portions Copyright (C) 1999 Promise Technology, Inc. * * Author: Frank Tiernan (frankt@promise.com) * Released under terms of General Public License * |
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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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* * Hardware information only available under NDA. |
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*/ #include <linux/kernel.h> #include <linux/module.h> #include <linux/pci.h> |
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#include <linux/blkdev.h> #include <linux/delay.h> #include <linux/device.h> |
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#include <linux/ktime.h> |
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#include <scsi/scsi.h> #include <scsi/scsi_host.h> #include <scsi/scsi_cmnd.h> #include <linux/libata.h> |
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#define DRV_NAME "pata_pdc2027x" |
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#define DRV_VERSION "1.0" |
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#undef PDC_DEBUG #ifdef PDC_DEBUG |
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#define PDPRINTK(fmt, args...) printk(KERN_ERR "%s: " fmt, __func__, ## args) |
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#else #define PDPRINTK(fmt, args...) #endif enum { |
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PDC_MMIO_BAR = 5, |
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PDC_UDMA_100 = 0, PDC_UDMA_133 = 1, PDC_100_MHZ = 100000000, PDC_133_MHZ = 133333333, PDC_SYS_CTL = 0x1100, PDC_ATA_CTL = 0x1104, PDC_GLOBAL_CTL = 0x1108, PDC_CTCR0 = 0x110C, PDC_CTCR1 = 0x1110, PDC_BYTE_COUNT = 0x1120, PDC_PLL_CTL = 0x1202, }; static int pdc2027x_init_one(struct pci_dev *pdev, const struct pci_device_id *ent); |
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#ifdef CONFIG_PM_SLEEP |
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static int pdc2027x_reinit_one(struct pci_dev *pdev); |
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#endif |
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static int pdc2027x_prereset(struct ata_link *link, unsigned long deadline); |
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static void pdc2027x_set_piomode(struct ata_port *ap, struct ata_device *adev); static void pdc2027x_set_dmamode(struct ata_port *ap, struct ata_device *adev); |
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static int pdc2027x_check_atapi_dma(struct ata_queued_cmd *qc); |
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static unsigned long pdc2027x_mode_filter(struct ata_device *adev, unsigned long mask); static int pdc2027x_cable_detect(struct ata_port *ap); |
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static int pdc2027x_set_mode(struct ata_link *link, struct ata_device **r_failed); |
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/* * ATA Timing Tables based on 133MHz controller clock. * These tables are only used when the controller is in 133MHz clock. * If the controller is in 100MHz clock, the ASIC hardware will * set the timing registers automatically when "set feature" command * is issued to the device. However, if the controller clock is 133MHz, * the following tables must be used. */ |
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static const struct pdc2027x_pio_timing { |
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u8 value0, value1, value2; |
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} pdc2027x_pio_timing_tbl[] = { |
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{ 0xfb, 0x2b, 0xac }, /* PIO mode 0 */ { 0x46, 0x29, 0xa4 }, /* PIO mode 1 */ { 0x23, 0x26, 0x64 }, /* PIO mode 2 */ { 0x27, 0x0d, 0x35 }, /* PIO mode 3, IORDY on, Prefetch off */ { 0x23, 0x09, 0x25 }, /* PIO mode 4, IORDY on, Prefetch off */ }; |
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static const struct pdc2027x_mdma_timing { |
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u8 value0, value1; |
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} pdc2027x_mdma_timing_tbl[] = { |
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{ 0xdf, 0x5f }, /* MDMA mode 0 */ { 0x6b, 0x27 }, /* MDMA mode 1 */ { 0x69, 0x25 }, /* MDMA mode 2 */ }; |
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static const struct pdc2027x_udma_timing { |
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u8 value0, value1, value2; |
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} pdc2027x_udma_timing_tbl[] = { |
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{ 0x4a, 0x0f, 0xd5 }, /* UDMA mode 0 */ { 0x3a, 0x0a, 0xd0 }, /* UDMA mode 1 */ { 0x2a, 0x07, 0xcd }, /* UDMA mode 2 */ { 0x1a, 0x05, 0xcd }, /* UDMA mode 3 */ { 0x1a, 0x03, 0xcd }, /* UDMA mode 4 */ { 0x1a, 0x02, 0xcb }, /* UDMA mode 5 */ { 0x1a, 0x01, 0xcb }, /* UDMA mode 6 */ }; static const struct pci_device_id pdc2027x_pci_tbl[] = { |
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{ PCI_VDEVICE(PROMISE, PCI_DEVICE_ID_PROMISE_20268), PDC_UDMA_100 }, { PCI_VDEVICE(PROMISE, PCI_DEVICE_ID_PROMISE_20269), PDC_UDMA_133 }, { PCI_VDEVICE(PROMISE, PCI_DEVICE_ID_PROMISE_20270), PDC_UDMA_100 }, { PCI_VDEVICE(PROMISE, PCI_DEVICE_ID_PROMISE_20271), PDC_UDMA_133 }, { PCI_VDEVICE(PROMISE, PCI_DEVICE_ID_PROMISE_20275), PDC_UDMA_133 }, { PCI_VDEVICE(PROMISE, PCI_DEVICE_ID_PROMISE_20276), PDC_UDMA_133 }, { PCI_VDEVICE(PROMISE, PCI_DEVICE_ID_PROMISE_20277), PDC_UDMA_133 }, |
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{ } /* terminate list */ }; static struct pci_driver pdc2027x_pci_driver = { .name = DRV_NAME, .id_table = pdc2027x_pci_tbl, .probe = pdc2027x_init_one, |
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.remove = ata_pci_remove_one, |
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#ifdef CONFIG_PM_SLEEP |
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.suspend = ata_pci_device_suspend, .resume = pdc2027x_reinit_one, #endif |
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}; static struct scsi_host_template pdc2027x_sht = { |
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ATA_BMDMA_SHT(DRV_NAME), |
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}; static struct ata_port_operations pdc2027x_pata100_ops = { |
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.inherits = &ata_bmdma_port_ops, |
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.check_atapi_dma = pdc2027x_check_atapi_dma, |
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.cable_detect = pdc2027x_cable_detect, |
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.prereset = pdc2027x_prereset, |
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}; static struct ata_port_operations pdc2027x_pata133_ops = { |
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.inherits = &pdc2027x_pata100_ops, .mode_filter = pdc2027x_mode_filter, |
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.set_piomode = pdc2027x_set_piomode, .set_dmamode = pdc2027x_set_dmamode, |
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.set_mode = pdc2027x_set_mode, |
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}; static struct ata_port_info pdc2027x_port_info[] = { /* PDC_UDMA_100 */ { |
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.flags = ATA_FLAG_SLAVE_POSS, |
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.pio_mask = ATA_PIO4, .mwdma_mask = ATA_MWDMA2, .udma_mask = ATA_UDMA5, |
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.port_ops = &pdc2027x_pata100_ops, }, /* PDC_UDMA_133 */ { |
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.flags = ATA_FLAG_SLAVE_POSS, |
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.pio_mask = ATA_PIO4, .mwdma_mask = ATA_MWDMA2, .udma_mask = ATA_UDMA6, |
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.port_ops = &pdc2027x_pata133_ops, }, }; MODULE_AUTHOR("Andre Hedrick, Frank Tiernan, Albert Lee"); MODULE_DESCRIPTION("libata driver module for Promise PDC20268 to PDC20277"); MODULE_LICENSE("GPL"); MODULE_VERSION(DRV_VERSION); MODULE_DEVICE_TABLE(pci, pdc2027x_pci_tbl); /** * port_mmio - Get the MMIO address of PDC2027x extended registers * @ap: Port * @offset: offset from mmio base */ |
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static inline void __iomem *port_mmio(struct ata_port *ap, unsigned int offset) |
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{ |
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return ap->host->iomap[PDC_MMIO_BAR] + ap->port_no * 0x100 + offset; |
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} /** * dev_mmio - Get the MMIO address of PDC2027x extended registers * @ap: Port * @adev: device * @offset: offset from mmio base */ |
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static inline void __iomem *dev_mmio(struct ata_port *ap, struct ata_device *adev, unsigned int offset) |
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{ u8 adj = (adev->devno) ? 0x08 : 0x00; return port_mmio(ap, offset) + adj; } /** |
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* pdc2027x_pata_cable_detect - Probe host controller cable detect info |
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* @ap: Port for which cable detect info is desired * * Read 80c cable indicator from Promise extended register. * This register is latched when the system is reset. * * LOCKING: * None (inherited from caller). */ |
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static int pdc2027x_cable_detect(struct ata_port *ap) |
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{ u32 cgcr; /* check cable detect results */ |
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cgcr = ioread32(port_mmio(ap, PDC_GLOBAL_CTL)); |
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if (cgcr & (1 << 26)) goto cbl40; PDPRINTK("No cable or 80-conductor cable on port %d ", ap->port_no); |
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return ATA_CBL_PATA80; |
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cbl40: printk(KERN_INFO DRV_NAME ": 40-conductor cable detected on port %d ", ap->port_no); |
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return ATA_CBL_PATA40; |
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} /** * pdc2027x_port_enabled - Check PDC ATA control register to see whether the port is enabled. * @ap: Port to check */ static inline int pdc2027x_port_enabled(struct ata_port *ap) { |
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return ioread8(port_mmio(ap, PDC_ATA_CTL)) & 0x02; |
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} /** * pdc2027x_prereset - prereset for PATA host controller |
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* @link: Target link |
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* @deadline: deadline jiffies for the operation |
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* * Probeinit including cable detection. * * LOCKING: * None (inherited from caller). */ |
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static int pdc2027x_prereset(struct ata_link *link, unsigned long deadline) |
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{ /* Check whether port enabled */ |
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if (!pdc2027x_port_enabled(link->ap)) |
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return -ENOENT; |
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return ata_sff_prereset(link, deadline); |
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} /** |
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* pdc2720x_mode_filter - mode selection filter * @adev: ATA device * @mask: list of modes proposed * * Block UDMA on devices that cause trouble with this controller. */ static unsigned long pdc2027x_mode_filter(struct ata_device *adev, unsigned long mask) { unsigned char model_num[ATA_ID_PROD_LEN + 1]; struct ata_device *pair = ata_dev_pair(adev); if (adev->class != ATA_DEV_ATA || adev->devno == 0 || pair == NULL) |
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return mask; |
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/* Check for slave of a Maxtor at UDMA6 */ ata_id_c_string(pair->id, model_num, ATA_ID_PROD, ATA_ID_PROD_LEN + 1); /* If the master is a maxtor in UDMA6 then the slave should not use UDMA 6 */ |
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if (strstr(model_num, "Maxtor") == NULL && pair->dma_mode == XFER_UDMA_6) |
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mask &= ~ (1 << (6 + ATA_SHIFT_UDMA)); |
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return mask; |
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} /** |
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* pdc2027x_set_piomode - Initialize host controller PATA PIO timings * @ap: Port to configure * @adev: um |
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* * Set PIO mode for device. * * LOCKING: * None (inherited from caller). */ static void pdc2027x_set_piomode(struct ata_port *ap, struct ata_device *adev) { unsigned int pio = adev->pio_mode - XFER_PIO_0; u32 ctcr0, ctcr1; PDPRINTK("adev->pio_mode[%X] ", adev->pio_mode); /* Sanity check */ if (pio > 4) { printk(KERN_ERR DRV_NAME ": Unknown pio mode [%d] ignored ", pio); return; } /* Set the PIO timing registers using value table for 133MHz */ PDPRINTK("Set pio regs... "); |
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ctcr0 = ioread32(dev_mmio(ap, adev, PDC_CTCR0)); |
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ctcr0 &= 0xffff0000; ctcr0 |= pdc2027x_pio_timing_tbl[pio].value0 | (pdc2027x_pio_timing_tbl[pio].value1 << 8); |
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iowrite32(ctcr0, dev_mmio(ap, adev, PDC_CTCR0)); |
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|
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ctcr1 = ioread32(dev_mmio(ap, adev, PDC_CTCR1)); |
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ctcr1 &= 0x00ffffff; ctcr1 |= (pdc2027x_pio_timing_tbl[pio].value2 << 24); |
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iowrite32(ctcr1, dev_mmio(ap, adev, PDC_CTCR1)); |
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PDPRINTK("Set pio regs done "); PDPRINTK("Set to pio mode[%u] ", pio); } /** * pdc2027x_set_dmamode - Initialize host controller PATA UDMA timings * @ap: Port to configure * @adev: um |
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* * Set UDMA mode for device. * * LOCKING: * None (inherited from caller). */ static void pdc2027x_set_dmamode(struct ata_port *ap, struct ata_device *adev) { unsigned int dma_mode = adev->dma_mode; u32 ctcr0, ctcr1; if ((dma_mode >= XFER_UDMA_0) && (dma_mode <= XFER_UDMA_6)) { /* Set the UDMA timing registers with value table for 133MHz */ unsigned int udma_mode = dma_mode & 0x07; if (dma_mode == XFER_UDMA_2) { /* * Turn off tHOLD. * If tHOLD is '1', the hardware will add half clock for data hold time. * This code segment seems to be no effect. tHOLD will be overwritten below. */ |
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ctcr1 = ioread32(dev_mmio(ap, adev, PDC_CTCR1)); iowrite32(ctcr1 & ~(1 << 7), dev_mmio(ap, adev, PDC_CTCR1)); |
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} PDPRINTK("Set udma regs... "); |
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ctcr1 = ioread32(dev_mmio(ap, adev, PDC_CTCR1)); |
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ctcr1 &= 0xff000000; ctcr1 |= pdc2027x_udma_timing_tbl[udma_mode].value0 | (pdc2027x_udma_timing_tbl[udma_mode].value1 << 8) | (pdc2027x_udma_timing_tbl[udma_mode].value2 << 16); |
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iowrite32(ctcr1, dev_mmio(ap, adev, PDC_CTCR1)); |
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PDPRINTK("Set udma regs done "); PDPRINTK("Set to udma mode[%u] ", udma_mode); } else if ((dma_mode >= XFER_MW_DMA_0) && (dma_mode <= XFER_MW_DMA_2)) { /* Set the MDMA timing registers with value table for 133MHz */ unsigned int mdma_mode = dma_mode & 0x07; PDPRINTK("Set mdma regs... "); |
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ctcr0 = ioread32(dev_mmio(ap, adev, PDC_CTCR0)); |
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ctcr0 &= 0x0000ffff; ctcr0 |= (pdc2027x_mdma_timing_tbl[mdma_mode].value0 << 16) | (pdc2027x_mdma_timing_tbl[mdma_mode].value1 << 24); |
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iowrite32(ctcr0, dev_mmio(ap, adev, PDC_CTCR0)); |
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PDPRINTK("Set mdma regs done "); PDPRINTK("Set to mdma mode[%u] ", mdma_mode); } else { printk(KERN_ERR DRV_NAME ": Unknown dma mode [%u] ignored ", dma_mode); } } /** |
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* pdc2027x_set_mode - Set the timing registers back to correct values. |
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* @link: link to configure |
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* @r_failed: Returned device for failure |
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* * The pdc2027x hardware will look at "SET FEATURES" and change the timing registers * automatically. The values set by the hardware might be incorrect, under 133Mhz PLL. * This function overwrites the possibly incorrect values set by the hardware to be correct. */ |
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static int pdc2027x_set_mode(struct ata_link *link, struct ata_device **r_failed) |
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{ |
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struct ata_port *ap = link->ap; |
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struct ata_device *dev; int rc; |
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|
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rc = ata_do_set_mode(link, r_failed); |
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if (rc < 0) return rc; |
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|
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ata_for_each_dev(dev, link, ENABLED) { pdc2027x_set_piomode(ap, dev); /* * Enable prefetch if the device support PIO only. */ if (dev->xfer_shift == ATA_SHIFT_PIO) { u32 ctcr1 = ioread32(dev_mmio(ap, dev, PDC_CTCR1)); ctcr1 |= (1 << 25); iowrite32(ctcr1, dev_mmio(ap, dev, PDC_CTCR1)); PDPRINTK("Turn on prefetch "); } else { pdc2027x_set_dmamode(ap, dev); |
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} } |
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return 0; |
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} /** * pdc2027x_check_atapi_dma - Check whether ATAPI DMA can be supported for this command * @qc: Metadata associated with taskfile to check * * LOCKING: * None (inherited from caller). * * RETURNS: 0 when ATAPI DMA can be used * 1 otherwise */ static int pdc2027x_check_atapi_dma(struct ata_queued_cmd *qc) { struct scsi_cmnd *cmd = qc->scsicmd; u8 *scsicmd = cmd->cmnd; int rc = 1; /* atapi dma off by default */ /* * This workaround is from Promise's GPL driver. * If ATAPI DMA is used for commands not in the * following white list, say MODE_SENSE and REQUEST_SENSE, * pdc2027x might hit the irq lost problem. */ switch (scsicmd[0]) { case READ_10: case WRITE_10: case READ_12: case WRITE_12: case READ_6: case WRITE_6: case 0xad: /* READ_DVD_STRUCTURE */ case 0xbe: /* READ_CD */ /* ATAPI DMA is ok */ rc = 0; break; default: ; } return rc; } /** * pdc_read_counter - Read the ctr counter |
5d728824e libata: convert t... |
473 |
* @host: target ATA host |
669a5db41 [libata] Add a bu... |
474 |
*/ |
5d728824e libata: convert t... |
475 |
static long pdc_read_counter(struct ata_host *host) |
669a5db41 [libata] Add a bu... |
476 |
{ |
5d728824e libata: convert t... |
477 |
void __iomem *mmio_base = host->iomap[PDC_MMIO_BAR]; |
669a5db41 [libata] Add a bu... |
478 479 480 481 482 |
long counter; int retry = 1; u32 bccrl, bccrh, bccrlv, bccrhv; retry: |
d2a84f478 pdc2027x: Switch ... |
483 484 |
bccrl = ioread32(mmio_base + PDC_BYTE_COUNT) & 0x7fff; bccrh = ioread32(mmio_base + PDC_BYTE_COUNT + 0x100) & 0x7fff; |
669a5db41 [libata] Add a bu... |
485 486 |
/* Read the counter values again for verification */ |
d2a84f478 pdc2027x: Switch ... |
487 488 |
bccrlv = ioread32(mmio_base + PDC_BYTE_COUNT) & 0x7fff; bccrhv = ioread32(mmio_base + PDC_BYTE_COUNT + 0x100) & 0x7fff; |
669a5db41 [libata] Add a bu... |
489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 |
counter = (bccrh << 15) | bccrl; PDPRINTK("bccrh [%X] bccrl [%X] ", bccrh, bccrl); PDPRINTK("bccrhv[%X] bccrlv[%X] ", bccrhv, bccrlv); /* * The 30-bit decreasing counter are read by 2 pieces. * Incorrect value may be read when both bccrh and bccrl are changing. * Ex. When 7900 decrease to 78FF, wrong value 7800 might be read. */ if (retry && !(bccrh == bccrhv && bccrl >= bccrlv)) { retry--; PDPRINTK("rereading counter "); goto retry; } return counter; } /** * adjust_pll - Adjust the PLL input clock in Hz. * * @pdc_controller: controller specific information |
5d728824e libata: convert t... |
516 |
* @host: target ATA host |
669a5db41 [libata] Add a bu... |
517 518 |
* @pll_clock: The input of PLL in HZ */ |
5d728824e libata: convert t... |
519 |
static void pdc_adjust_pll(struct ata_host *host, long pll_clock, unsigned int board_idx) |
669a5db41 [libata] Add a bu... |
520 |
{ |
5d728824e libata: convert t... |
521 |
void __iomem *mmio_base = host->iomap[PDC_MMIO_BAR]; |
669a5db41 [libata] Add a bu... |
522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 |
u16 pll_ctl; long pll_clock_khz = pll_clock / 1000; long pout_required = board_idx? PDC_133_MHZ:PDC_100_MHZ; long ratio = pout_required / pll_clock_khz; int F, R; /* Sanity check */ if (unlikely(pll_clock_khz < 5000L || pll_clock_khz > 70000L)) { printk(KERN_ERR DRV_NAME ": Invalid PLL input clock %ldkHz, give up! ", pll_clock_khz); return; } #ifdef PDC_DEBUG PDPRINTK("pout_required is %ld ", pout_required); /* Show the current clock value of PLL control register * (maybe already configured by the firmware) */ |
d2a84f478 pdc2027x: Switch ... |
542 |
pll_ctl = ioread16(mmio_base + PDC_PLL_CTL); |
669a5db41 [libata] Add a bu... |
543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 |
PDPRINTK("pll_ctl[%X] ", pll_ctl); #endif /* * Calculate the ratio of F, R and OD * POUT = (F + 2) / (( R + 2) * NO) */ if (ratio < 8600L) { /* 8.6x */ /* Using NO = 0x01, R = 0x0D */ R = 0x0d; } else if (ratio < 12900L) { /* 12.9x */ /* Using NO = 0x01, R = 0x08 */ R = 0x08; } else if (ratio < 16100L) { /* 16.1x */ /* Using NO = 0x01, R = 0x06 */ R = 0x06; } else if (ratio < 64000L) { /* 64x */ R = 0x00; } else { /* Invalid ratio */ printk(KERN_ERR DRV_NAME ": Invalid ratio %ld, give up! ", ratio); return; } F = (ratio * (R+2)) / 1000 - 2; if (unlikely(F < 0 || F > 127)) { /* Invalid F */ printk(KERN_ERR DRV_NAME ": F[%d] invalid! ", F); return; } PDPRINTK("F[%d] R[%d] ratio*1000[%ld] ", F, R, ratio); pll_ctl = (R << 8) | F; PDPRINTK("Writing pll_ctl[%X] ", pll_ctl); |
d2a84f478 pdc2027x: Switch ... |
586 587 |
iowrite16(pll_ctl, mmio_base + PDC_PLL_CTL); ioread16(mmio_base + PDC_PLL_CTL); /* flush */ |
669a5db41 [libata] Add a bu... |
588 589 |
/* Wait the PLL circuit to be stable */ |
b3506c7ed ata: pata_pdc2027... |
590 |
msleep(30); |
669a5db41 [libata] Add a bu... |
591 592 593 594 595 596 |
#ifdef PDC_DEBUG /* * Show the current clock value of PLL control register * (maybe configured by the firmware) */ |
d2a84f478 pdc2027x: Switch ... |
597 |
pll_ctl = ioread16(mmio_base + PDC_PLL_CTL); |
669a5db41 [libata] Add a bu... |
598 599 600 601 602 603 604 605 606 607 |
PDPRINTK("pll_ctl[%X] ", pll_ctl); #endif return; } /** * detect_pll_input_clock - Detect the PLL input clock in Hz. |
5d728824e libata: convert t... |
608 |
* @host: target ATA host |
669a5db41 [libata] Add a bu... |
609 610 611 |
* Ex. 16949000 on 33MHz PCI bus for pdc20275. * Half of the PCI clock. */ |
5d728824e libata: convert t... |
612 |
static long pdc_detect_pll_input_clock(struct ata_host *host) |
669a5db41 [libata] Add a bu... |
613 |
{ |
5d728824e libata: convert t... |
614 |
void __iomem *mmio_base = host->iomap[PDC_MMIO_BAR]; |
669a5db41 [libata] Add a bu... |
615 616 |
u32 scr; long start_count, end_count; |
cedda4c3b pata_pdc2027x: Us... |
617 |
ktime_t start_time, end_time; |
8c781bf77 libata: pata_pdc2... |
618 |
long pll_clock, usec_elapsed; |
669a5db41 [libata] Add a bu... |
619 |
|
669a5db41 [libata] Add a bu... |
620 |
/* Start the test mode */ |
d2a84f478 pdc2027x: Switch ... |
621 |
scr = ioread32(mmio_base + PDC_SYS_CTL); |
669a5db41 [libata] Add a bu... |
622 623 |
PDPRINTK("scr[%X] ", scr); |
d2a84f478 pdc2027x: Switch ... |
624 625 |
iowrite32(scr | (0x01 << 14), mmio_base + PDC_SYS_CTL); ioread32(mmio_base + PDC_SYS_CTL); /* flush */ |
669a5db41 [libata] Add a bu... |
626 |
|
78c4af0b4 pata_pdc2027x: PL... |
627 628 |
/* Read current counter value */ start_count = pdc_read_counter(host); |
cedda4c3b pata_pdc2027x: Us... |
629 |
start_time = ktime_get(); |
78c4af0b4 pata_pdc2027x: PL... |
630 |
|
669a5db41 [libata] Add a bu... |
631 |
/* Let the counter run for 100 ms. */ |
b3506c7ed ata: pata_pdc2027... |
632 |
msleep(100); |
669a5db41 [libata] Add a bu... |
633 634 |
/* Read the counter values again */ |
5d728824e libata: convert t... |
635 |
end_count = pdc_read_counter(host); |
cedda4c3b pata_pdc2027x: Us... |
636 |
end_time = ktime_get(); |
669a5db41 [libata] Add a bu... |
637 638 |
/* Stop the test mode */ |
d2a84f478 pdc2027x: Switch ... |
639 |
scr = ioread32(mmio_base + PDC_SYS_CTL); |
669a5db41 [libata] Add a bu... |
640 641 |
PDPRINTK("scr[%X] ", scr); |
d2a84f478 pdc2027x: Switch ... |
642 643 |
iowrite32(scr & ~(0x01 << 14), mmio_base + PDC_SYS_CTL); ioread32(mmio_base + PDC_SYS_CTL); /* flush */ |
669a5db41 [libata] Add a bu... |
644 645 |
/* calculate the input clock in Hz */ |
cedda4c3b pata_pdc2027x: Us... |
646 |
usec_elapsed = (long) ktime_us_delta(end_time, start_time); |
8c781bf77 libata: pata_pdc2... |
647 |
|
78c4af0b4 pata_pdc2027x: PL... |
648 |
pll_clock = ((start_count - end_count) & 0x3fffffff) / 100 * |
8c781bf77 libata: pata_pdc2... |
649 |
(100000000 / usec_elapsed); |
669a5db41 [libata] Add a bu... |
650 651 652 653 654 655 656 657 658 659 660 |
PDPRINTK("start[%ld] end[%ld] ", start_count, end_count); PDPRINTK("PLL input clock[%ld]Hz ", pll_clock); return pll_clock; } /** * pdc_hardware_init - Initialize the hardware. |
5d728824e libata: convert t... |
661 662 |
* @host: target ATA host * @board_idx: board identifier |
669a5db41 [libata] Add a bu... |
663 |
*/ |
c1da86c19 pata_pdc2027x: Re... |
664 |
static void pdc_hardware_init(struct ata_host *host, unsigned int board_idx) |
669a5db41 [libata] Add a bu... |
665 666 667 668 669 670 671 672 673 |
{ long pll_clock; /* * Detect PLL input clock rate. * On some system, where PCI bus is running at non-standard clock rate. * Ex. 25MHz or 40MHz, we have to adjust the cycle_time. * The pdc20275 controller employs PLL circuit to help correct timing registers setting. */ |
5d728824e libata: convert t... |
674 |
pll_clock = pdc_detect_pll_input_clock(host); |
669a5db41 [libata] Add a bu... |
675 |
|
a44fec1fc ata: Convert dev_... |
676 677 |
dev_info(host->dev, "PLL input clock %ld kHz ", pll_clock/1000); |
669a5db41 [libata] Add a bu... |
678 679 |
/* Adjust PLL control register */ |
5d728824e libata: convert t... |
680 |
pdc_adjust_pll(host, pll_clock, board_idx); |
669a5db41 [libata] Add a bu... |
681 682 683 684 685 686 687 |
} /** * pdc_ata_setup_port - setup the mmio address * @port: ata ioports to setup * @base: base address */ |
0d5ff5667 libata: convert t... |
688 |
static void pdc_ata_setup_port(struct ata_ioports *port, void __iomem *base) |
669a5db41 [libata] Add a bu... |
689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 |
{ port->cmd_addr = port->data_addr = base; port->feature_addr = port->error_addr = base + 0x05; port->nsect_addr = base + 0x0a; port->lbal_addr = base + 0x0f; port->lbam_addr = base + 0x10; port->lbah_addr = base + 0x15; port->device_addr = base + 0x1a; port->command_addr = port->status_addr = base + 0x1f; port->altstatus_addr = port->ctl_addr = base + 0x81a; } /** * pdc2027x_init_one - PCI probe function * Called when an instance of PCI adapter is inserted. * This function checks whether the hardware is supported, * initialize hardware and register an instance of ata_host to |
5d728824e libata: convert t... |
710 |
* libata. (implements struct pci_driver.probe() ) |
669a5db41 [libata] Add a bu... |
711 712 713 714 |
* * @pdev: instance of pci_dev found * @ent: matching entry in the id_tbl[] */ |
0ec249146 Drivers: ata: rem... |
715 716 |
static int pdc2027x_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) |
669a5db41 [libata] Add a bu... |
717 |
{ |
cbcdd8759 libata: implement... |
718 719 |
static const unsigned long cmd_offset[] = { 0x17c0, 0x15c0 }; static const unsigned long bmdma_offset[] = { 0x1000, 0x1008 }; |
669a5db41 [libata] Add a bu... |
720 |
unsigned int board_idx = (unsigned int) ent->driver_data; |
5d728824e libata: convert t... |
721 722 723 |
const struct ata_port_info *ppi[] = { &pdc2027x_port_info[board_idx], NULL }; struct ata_host *host; |
7c250413e [PATCH] pata_pdc2... |
724 |
void __iomem *mmio_base; |
cbcdd8759 libata: implement... |
725 |
int i, rc; |
669a5db41 [libata] Add a bu... |
726 |
|
06296a1e6 ata: Add and use ... |
727 |
ata_print_version_once(&pdev->dev, DRV_VERSION); |
669a5db41 [libata] Add a bu... |
728 |
|
5d728824e libata: convert t... |
729 730 731 732 733 734 |
/* alloc host */ host = ata_host_alloc_pinfo(&pdev->dev, ppi, 2); if (!host) return -ENOMEM; /* acquire resources and fill host */ |
24dc5f33e libata: update li... |
735 |
rc = pcim_enable_device(pdev); |
669a5db41 [libata] Add a bu... |
736 737 |
if (rc) return rc; |
0d5ff5667 libata: convert t... |
738 |
rc = pcim_iomap_regions(pdev, 1 << PDC_MMIO_BAR, DRV_NAME); |
669a5db41 [libata] Add a bu... |
739 |
if (rc) |
24dc5f33e libata: update li... |
740 |
return rc; |
5d728824e libata: convert t... |
741 |
host->iomap = pcim_iomap_table(pdev); |
669a5db41 [libata] Add a bu... |
742 |
|
b5e555561 libata: switch re... |
743 |
rc = dma_set_mask_and_coherent(&pdev->dev, ATA_DMA_MASK); |
669a5db41 [libata] Add a bu... |
744 |
if (rc) |
24dc5f33e libata: update li... |
745 |
return rc; |
669a5db41 [libata] Add a bu... |
746 |
|
5d728824e libata: convert t... |
747 |
mmio_base = host->iomap[PDC_MMIO_BAR]; |
669a5db41 [libata] Add a bu... |
748 |
|
cbcdd8759 libata: implement... |
749 750 751 752 753 754 755 756 757 |
for (i = 0; i < 2; i++) { struct ata_port *ap = host->ports[i]; pdc_ata_setup_port(&ap->ioaddr, mmio_base + cmd_offset[i]); ap->ioaddr.bmdma_addr = mmio_base + bmdma_offset[i]; ata_port_pbar_desc(ap, PDC_MMIO_BAR, -1, "mmio"); ata_port_pbar_desc(ap, PDC_MMIO_BAR, cmd_offset[i], "cmd"); } |
0d5ff5667 libata: convert t... |
758 |
|
669a5db41 [libata] Add a bu... |
759 760 761 |
//pci_enable_intx(pdev); /* initialize adapter */ |
c1da86c19 pata_pdc2027x: Re... |
762 |
pdc_hardware_init(host, board_idx); |
669a5db41 [libata] Add a bu... |
763 |
|
5d728824e libata: convert t... |
764 |
pci_set_master(pdev); |
c3b288942 libata-sff: separ... |
765 |
return ata_host_activate(host, pdev->irq, ata_bmdma_interrupt, |
9363c3825 libata: rename SF... |
766 |
IRQF_SHARED, &pdc2027x_sht); |
669a5db41 [libata] Add a bu... |
767 |
} |
58eb8cd56 ata: use CONFIG_P... |
768 |
#ifdef CONFIG_PM_SLEEP |
adacaf144 pata_pdc2027x: ad... |
769 770 |
static int pdc2027x_reinit_one(struct pci_dev *pdev) { |
0a86e1c85 ata: use pci_get_... |
771 |
struct ata_host *host = pci_get_drvdata(pdev); |
adacaf144 pata_pdc2027x: ad... |
772 773 774 775 776 777 778 779 780 781 782 783 |
unsigned int board_idx; int rc; rc = ata_pci_device_do_resume(pdev); if (rc) return rc; if (pdev->device == PCI_DEVICE_ID_PROMISE_20268 || pdev->device == PCI_DEVICE_ID_PROMISE_20270) board_idx = PDC_UDMA_100; else board_idx = PDC_UDMA_133; |
c1da86c19 pata_pdc2027x: Re... |
784 |
pdc_hardware_init(host, board_idx); |
adacaf144 pata_pdc2027x: ad... |
785 786 787 788 789 |
ata_host_resume(host); return 0; } #endif |
2fc75da0c ata: use module_p... |
790 |
module_pci_driver(pdc2027x_pci_driver); |