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Subject[PATCH 50/68] pata_efar: move code to be re-used by ide2libata to pata_efar.h
From: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Subject: [PATCH] pata_efar: move code to be re-used by ide2libata to pata_efar.h

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
---
drivers/ata/pata_efar.c | 151 -----------------------------------------------
drivers/ata/pata_efar.h | 152 ++++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 153 insertions(+), 150 deletions(-)

Index: b/drivers/ata/pata_efar.c
===================================================================
--- a/drivers/ata/pata_efar.c
+++ b/drivers/ata/pata_efar.c
@@ -49,156 +49,7 @@ static int efar_pre_reset(struct ata_lin
return ata_sff_prereset(link, deadline);
}

-/**
- * efar_cable_detect - check for 40/80 pin
- * @ap: Port
- *
- * Perform cable detection for the EFAR ATA interface. This is
- * different to the PIIX arrangement
- */
-
-static int efar_cable_detect(struct ata_port *ap)
-{
- struct pci_dev *pdev = to_pci_dev(ap->host->dev);
- u8 tmp;
-
- pci_read_config_byte(pdev, 0x47, &tmp);
- if (tmp & (2 >> ap->port_no))
- return ATA_CBL_PATA40;
- return ATA_CBL_PATA80;
-}
-
-static DEFINE_SPINLOCK(efar_lock);
-
-static void efar_set_timings(struct ata_port *ap, struct ata_device *adev,
- u8 pio, bool use_mwdma)
-{
- struct pci_dev *dev = to_pci_dev(ap->host->dev);
- unsigned long flags;
- unsigned int is_slave = (adev->devno != 0);
- u8 master_port = ap->port_no ? 0x42 : 0x40;
- u16 master_data;
- u8 slave_data;
- u8 udma_enable;
- int control = 0;
-
- /*
- * See Intel Document 298600-004 for the timing programing rules
- * for PIIX/ICH. The EFAR is a clone so very similar
- */
-
- static const /* ISP RTC */
- u8 timings[][2] = { { 0, 0 },
- { 0, 0 },
- { 1, 0 },
- { 2, 1 },
- { 2, 3 }, };
-
- if (pio > 1 || use_mwdma)
- control |= 1; /* TIME */
- if (ata_pio_need_iordy(adev) || use_mwdma)
- control |= 2; /* IE */
- /* Intel specifies that the prefetch/posting is for disk only */
- if (adev->class == ATA_DEV_ATA)
- control |= 4; /* PPE */
- /* If the drive MWDMA is faster than it can do PIO then
- we must force PIO into PIO0 */
- if (use_mwdma && adev->pio_mode < (XFER_PIO_0 + pio))
- /* Enable DMA timing only */
- control |= 8; /* PIO cycles in PIO0 */
-
- spin_lock_irqsave(&efar_lock, flags);
-
- pci_read_config_word(dev, master_port, &master_data);
-
- /* Set PPE, IE, and TIME as appropriate */
- if (is_slave == 0) {
- master_data &= 0xCCF0;
- master_data |= control;
- master_data |= (timings[pio][0] << 12) |
- (timings[pio][1] << 8);
- } else {
- int shift = 4 * ap->port_no;
-
- master_data &= 0xFF0F;
- master_data |= (control << 4);
-
- /* Slave timing in separate register */
- pci_read_config_byte(dev, 0x44, &slave_data);
- slave_data &= ap->port_no ? 0x0F : 0xF0;
- slave_data |= ((timings[pio][0] << 2) | timings[pio][1]) << shift;
- }
-
- master_data |= 0x4000; /* Ensure SITRE is set */
- pci_write_config_word(dev, master_port, master_data);
- if (is_slave)
- pci_write_config_byte(dev, 0x44, slave_data);
-
- pci_read_config_byte(dev, 0x48, &udma_enable);
- udma_enable &= ~(1 << (2 * ap->port_no + adev->devno));
- pci_write_config_byte(dev, 0x48, udma_enable);
-
- spin_unlock_irqrestore(&efar_lock, flags);
-}
-
-/**
- * efar_set_piomode - Initialize host controller PATA PIO timings
- * @ap: Port whose timings we are configuring
- * @adev: Device to program
- *
- * Set PIO mode for device, in host controller PCI config space.
- *
- * LOCKING:
- * None (inherited from caller).
- */
-
-static void efar_set_piomode(struct ata_port *ap, struct ata_device *adev)
-{
- efar_set_timings(ap, adev, adev->pio_mode - XFER_PIO_0, 0);
-}
-
-/**
- * efar_set_dmamode - Initialize host controller PATA DMA timings
- * @ap: Port whose timings we are configuring
- * @adev: Device to program
- *
- * Set UDMA/MWDMA mode for device, in host controller PCI config space.
- *
- * LOCKING:
- * None (inherited from caller).
- */
-
-static void efar_set_dmamode (struct ata_port *ap, struct ata_device *adev)
-{
- struct pci_dev *dev = to_pci_dev(ap->host->dev);
- unsigned long flags;
- u8 speed = adev->dma_mode;
- int devid = adev->devno + 2 * ap->port_no;
- u8 udma_enable;
-
- if (speed >= XFER_UDMA_0) {
- unsigned int udma = speed - XFER_UDMA_0;
- u16 udma_timing;
-
- spin_lock_irqsave(&efar_lock, flags);
-
- pci_read_config_byte(dev, 0x48, &udma_enable);
-
- udma_enable |= (1 << devid);
-
- /* Load the UDMA mode number */
- pci_read_config_word(dev, 0x4A, &udma_timing);
- udma_timing &= ~(7 << (4 * devid));
- udma_timing |= udma << (4 * devid);
- pci_write_config_word(dev, 0x4A, udma_timing);
-
- pci_write_config_byte(dev, 0x48, udma_enable);
-
- spin_unlock_irqrestore(&efar_lock, flags);
- } else
- /* MWDMA is driven by the PIO timings. */
- efar_set_timings(ap, adev, ata_mwdma_to_pio(speed), 1);
-}
+#include "pata_efar.h"

static struct scsi_host_template efar_sht = {
ATA_BMDMA_SHT(DRV_NAME),
Index: b/drivers/ata/pata_efar.h
===================================================================
--- /dev/null
+++ b/drivers/ata/pata_efar.h
@@ -0,0 +1,152 @@
+
+/**
+ * efar_cable_detect - check for 40/80 pin
+ * @ap: Port
+ *
+ * Perform cable detection for the EFAR ATA interface. This is
+ * different to the PIIX arrangement
+ */
+
+static int efar_cable_detect(struct ata_port *ap)
+{
+ struct pci_dev *pdev = to_pci_dev(ap->host->dev);
+ u8 tmp;
+
+ pci_read_config_byte(pdev, 0x47, &tmp);
+ if (tmp & (2 >> ap->port_no))
+ return ATA_CBL_PATA40;
+ return ATA_CBL_PATA80;
+}
+
+static DEFINE_SPINLOCK(efar_lock);
+
+static void efar_set_timings(struct ata_port *ap, struct ata_device *adev,
+ u8 pio, bool use_mwdma)
+{
+ struct pci_dev *dev = to_pci_dev(ap->host->dev);
+ unsigned long flags;
+ unsigned int is_slave = (adev->devno != 0);
+ u8 master_port = ap->port_no ? 0x42 : 0x40;
+ u16 master_data;
+ u8 slave_data;
+ u8 udma_enable;
+ int control = 0;
+
+ /*
+ * See Intel Document 298600-004 for the timing programing rules
+ * for PIIX/ICH. The EFAR is a clone so very similar
+ */
+
+ static const /* ISP RTC */
+ u8 timings[][2] = { { 0, 0 },
+ { 0, 0 },
+ { 1, 0 },
+ { 2, 1 },
+ { 2, 3 }, };
+
+ if (pio > 1 || use_mwdma)
+ control |= 1; /* TIME */
+ if (ata_pio_need_iordy(adev) || use_mwdma)
+ control |= 2; /* IE */
+ /* Intel specifies that the prefetch/posting is for disk only */
+ if (adev->class == ATA_DEV_ATA)
+ control |= 4; /* PPE */
+ /* If the drive MWDMA is faster than it can do PIO then
+ we must force PIO into PIO0 */
+ if (use_mwdma && adev->pio_mode < (XFER_PIO_0 + pio))
+ /* Enable DMA timing only */
+ control |= 8; /* PIO cycles in PIO0 */
+
+ spin_lock_irqsave(&efar_lock, flags);
+
+ pci_read_config_word(dev, master_port, &master_data);
+
+ /* Set PPE, IE, and TIME as appropriate */
+ if (is_slave == 0) {
+ master_data &= 0xCCF0;
+ master_data |= control;
+ master_data |= (timings[pio][0] << 12) |
+ (timings[pio][1] << 8);
+ } else {
+ int shift = 4 * ap->port_no;
+
+ master_data &= 0xFF0F;
+ master_data |= (control << 4);
+
+ /* Slave timing in separate register */
+ pci_read_config_byte(dev, 0x44, &slave_data);
+ slave_data &= ap->port_no ? 0x0F : 0xF0;
+ slave_data |=
+ ((timings[pio][0] << 2) | timings[pio][1]) << shift;
+ }
+
+ master_data |= 0x4000; /* Ensure SITRE is set */
+ pci_write_config_word(dev, master_port, master_data);
+ if (is_slave)
+ pci_write_config_byte(dev, 0x44, slave_data);
+
+ pci_read_config_byte(dev, 0x48, &udma_enable);
+ udma_enable &= ~(1 << (2 * ap->port_no + adev->devno));
+ pci_write_config_byte(dev, 0x48, udma_enable);
+
+ spin_unlock_irqrestore(&efar_lock, flags);
+}
+
+/**
+ * efar_set_piomode - Initialize host controller PATA PIO timings
+ * @ap: Port whose timings we are configuring
+ * @adev: Device to program
+ *
+ * Set PIO mode for device, in host controller PCI config space.
+ *
+ * LOCKING:
+ * None (inherited from caller).
+ */
+
+static void efar_set_piomode(struct ata_port *ap, struct ata_device *adev)
+{
+ efar_set_timings(ap, adev, adev->pio_mode - XFER_PIO_0, 0);
+}
+
+/**
+ * efar_set_dmamode - Initialize host controller PATA DMA timings
+ * @ap: Port whose timings we are configuring
+ * @adev: Device to program
+ *
+ * Set UDMA/MWDMA mode for device, in host controller PCI config space.
+ *
+ * LOCKING:
+ * None (inherited from caller).
+ */
+
+static void efar_set_dmamode(struct ata_port *ap, struct ata_device *adev)
+{
+ struct pci_dev *dev = to_pci_dev(ap->host->dev);
+ unsigned long flags;
+ u8 speed = adev->dma_mode;
+ int devid = adev->devno + 2 * ap->port_no;
+ u8 udma_enable;
+
+ if (speed >= XFER_UDMA_0) {
+ unsigned int udma = speed - XFER_UDMA_0;
+ u16 udma_timing;
+
+ spin_lock_irqsave(&efar_lock, flags);
+
+ pci_read_config_byte(dev, 0x48, &udma_enable);
+
+ udma_enable |= (1 << devid);
+
+ /* Load the UDMA mode number */
+ pci_read_config_word(dev, 0x4A, &udma_timing);
+ udma_timing &= ~(7 << (4 * devid));
+ udma_timing |= udma << (4 * devid);
+ pci_write_config_word(dev, 0x4A, udma_timing);
+
+ pci_write_config_byte(dev, 0x48, udma_enable);
+
+ spin_unlock_irqrestore(&efar_lock, flags);
+ } else
+ /* MWDMA is driven by the PIO timings. */
+ efar_set_timings(ap, adev, ata_mwdma_to_pio(speed), 1);
+}

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