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Message-Id: <20100129160750.21495.96663.sendpatchset@localhost>
Date: Fri, 29 Jan 2010 17:07:50 +0100
From: Bartlomiej Zolnierkiewicz <bzolnier@...il.com>
To: linux-ide@...r.kernel.org
Cc: Bartlomiej Zolnierkiewicz <bzolnier@...il.com>,
linux-kernel@...r.kernel.org
Subject: [PATCH 44/68] pata_cs5530: move code to be re-used by ide2libata to pata_cs5530.h
From: Bartlomiej Zolnierkiewicz <bzolnier@...il.com>
Subject: [PATCH] pata_cs5530: move code to be re-used by ide2libata to pata_cs5530.h
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@...il.com>
---
drivers/ata/pata_cs5530.c | 178 --------------------------------------------
drivers/ata/pata_cs5530.h | 183 ++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 184 insertions(+), 177 deletions(-)
Index: b/drivers/ata/pata_cs5530.c
===================================================================
--- a/drivers/ata/pata_cs5530.c
+++ b/drivers/ata/pata_cs5530.c
@@ -43,93 +43,7 @@ static void __iomem *cs5530_port_base(st
return (void __iomem *)((bmdma & ~0x0F) + 0x20 + 0x10 * ap->port_no);
}
-/**
- * cs5530_set_piomode - PIO setup
- * @ap: ATA interface
- * @adev: device on the interface
- *
- * Set our PIO requirements. This is fairly simple on the CS5530
- * chips.
- */
-
-static void cs5530_set_piomode(struct ata_port *ap, struct ata_device *adev)
-{
- static const unsigned int cs5530_pio_timings[2][5] = {
- {0x00009172, 0x00012171, 0x00020080, 0x00032010, 0x00040010},
- {0xd1329172, 0x71212171, 0x30200080, 0x20102010, 0x00100010}
- };
- void __iomem *base = cs5530_port_base(ap);
- u32 tuning;
- int format;
-
- /* Find out which table to use */
- tuning = ioread32(base + 0x04);
- format = (tuning & 0x80000000UL) ? 1 : 0;
-
- /* Now load the right timing register */
- if (adev->devno)
- base += 0x08;
-
- iowrite32(cs5530_pio_timings[format][adev->pio_mode - XFER_PIO_0], base);
-}
-
-/**
- * cs5530_set_dmamode - DMA timing setup
- * @ap: ATA interface
- * @adev: Device being configured
- *
- * We cannot mix MWDMA and UDMA without reloading timings each switch
- * master to slave. We track the last DMA setup in order to minimise
- * reloads.
- */
-
-static void cs5530_set_dmamode(struct ata_port *ap, struct ata_device *adev)
-{
- void __iomem *base = cs5530_port_base(ap);
- u32 tuning, timing = 0;
- u8 reg;
-
- /* Find out which table to use */
- tuning = ioread32(base + 0x04);
-
- switch(adev->dma_mode) {
- case XFER_UDMA_0:
- timing = 0x00921250;break;
- case XFER_UDMA_1:
- timing = 0x00911140;break;
- case XFER_UDMA_2:
- timing = 0x00911030;break;
- case XFER_MW_DMA_0:
- timing = 0x00077771;break;
- case XFER_MW_DMA_1:
- timing = 0x00012121;break;
- case XFER_MW_DMA_2:
- timing = 0x00002020;break;
- default:
- BUG();
- }
- /* Merge in the PIO format bit */
- timing |= (tuning & 0x80000000UL);
- if (adev->devno == 0) /* Master */
- iowrite32(timing, base + 0x04);
- else {
- if (timing & 0x00100000)
- tuning |= 0x00100000; /* UDMA for both */
- else
- tuning &= ~0x00100000; /* MWDMA for both */
- iowrite32(tuning, base + 0x04);
- iowrite32(timing, base + 0x0C);
- }
-
- /* Set the DMA capable bit in the BMDMA area */
- reg = ioread8(ap->ioaddr.bmdma_addr + ATA_DMA_STATUS);
- reg |= (1 << (5 + adev->devno));
- iowrite8(reg, ap->ioaddr.bmdma_addr + ATA_DMA_STATUS);
-
- /* Remember the last DMA setup we did */
-
- ap->private_data = adev;
-}
+#include "pata_cs5530.h"
/**
* cs5530_qc_issue - command issue
@@ -195,96 +109,6 @@ static int cs5530_is_palmax(void)
return 0;
}
-
-/**
- * cs5530_init_chip - Chipset init
- * @gendev: device
- *
- * Perform the chip initialisation work that is shared between both
- * setup and resume paths
- */
-
-static int cs5530_init_chip(struct device *gendev)
-{
- struct pci_dev *master_0 = NULL, *cs5530_0 = NULL, *dev = NULL;
-
- while ((dev = pci_get_device(PCI_VENDOR_ID_CYRIX, PCI_ANY_ID, dev)) != NULL) {
- switch (dev->device) {
- case PCI_DEVICE_ID_CYRIX_PCI_MASTER:
- master_0 = pci_dev_get(dev);
- break;
- case PCI_DEVICE_ID_CYRIX_5530_LEGACY:
- cs5530_0 = pci_dev_get(dev);
- break;
- }
- }
- if (!master_0) {
- printk(KERN_ERR DRV_NAME ": unable to locate PCI MASTER function\n");
- goto fail_put;
- }
- if (!cs5530_0) {
- printk(KERN_ERR DRV_NAME ": unable to locate CS5530 LEGACY function\n");
- goto fail_put;
- }
-
- pci_set_master(cs5530_0);
- pci_try_set_mwi(cs5530_0);
-
- /*
- * Set PCI CacheLineSize to 16-bytes:
- * --> Write 0x04 into 8-bit PCI CACHELINESIZE reg of function 0 of the cs5530
- *
- * Note: This value is constant because the 5530 is only a Geode companion
- */
-
- pci_write_config_byte(cs5530_0, PCI_CACHE_LINE_SIZE, 0x04);
-
- /*
- * Disable trapping of UDMA register accesses (Win98 hack):
- * --> Write 0x5006 into 16-bit reg at offset 0xd0 of function 0 of the cs5530
- */
-
- pci_write_config_word(cs5530_0, 0xd0, 0x5006);
-
- /*
- * Bit-1 at 0x40 enables MemoryWriteAndInvalidate on internal X-bus:
- * The other settings are what is necessary to get the register
- * into a sane state for IDE DMA operation.
- */
-
- pci_write_config_byte(master_0, 0x40, 0x1e);
-
- /*
- * Set max PCI burst size (16-bytes seems to work best):
- * 16bytes: set bit-1 at 0x41 (reg value of 0x16)
- * all others: clear bit-1 at 0x41, and do:
- * 128bytes: OR 0x00 at 0x41
- * 256bytes: OR 0x04 at 0x41
- * 512bytes: OR 0x08 at 0x41
- * 1024bytes: OR 0x0c at 0x41
- */
-
- pci_write_config_byte(master_0, 0x41, 0x14);
-
- /*
- * These settings are necessary to get the chip
- * into a sane state for IDE DMA operation.
- */
-
- pci_write_config_byte(master_0, 0x42, 0x00);
- pci_write_config_byte(master_0, 0x43, 0xc1);
-
- pci_dev_put(master_0);
- pci_dev_put(cs5530_0);
- return 0;
-fail_put:
- if (master_0)
- pci_dev_put(master_0);
- if (cs5530_0)
- pci_dev_put(cs5530_0);
- return -EIO;
-}
-
/**
* cs5530_init_one - Initialise a CS5530
* @dev: PCI device
Index: b/drivers/ata/pata_cs5530.h
===================================================================
--- /dev/null
+++ b/drivers/ata/pata_cs5530.h
@@ -0,0 +1,183 @@
+
+/**
+ * cs5530_set_piomode - PIO setup
+ * @ap: ATA interface
+ * @adev: device on the interface
+ *
+ * Set our PIO requirements. This is fairly simple on the CS5530
+ * chips.
+ */
+
+static void cs5530_set_piomode(struct ata_port *ap, struct ata_device *adev)
+{
+ static const unsigned int cs5530_pio_timings[2][5] = {
+ {0x00009172, 0x00012171, 0x00020080, 0x00032010, 0x00040010},
+ {0xd1329172, 0x71212171, 0x30200080, 0x20102010, 0x00100010}
+ };
+ void __iomem *base = cs5530_port_base(ap);
+ u32 tuning;
+ int format;
+
+ /* Find out which table to use */
+ tuning = ioread32(base + 0x04);
+ format = (tuning & 0x80000000UL) ? 1 : 0;
+
+ /* Now load the right timing register */
+ if (adev->devno)
+ base += 0x08;
+
+ iowrite32(cs5530_pio_timings[format][adev->pio_mode - XFER_PIO_0],
+ base);
+}
+
+/**
+ * cs5530_set_dmamode - DMA timing setup
+ * @ap: ATA interface
+ * @adev: Device being configured
+ *
+ * We cannot mix MWDMA and UDMA without reloading timings each switch
+ * master to slave. We track the last DMA setup in order to minimise
+ * reloads.
+ */
+
+static void cs5530_set_dmamode(struct ata_port *ap, struct ata_device *adev)
+{
+ void __iomem *base = cs5530_port_base(ap);
+ u32 tuning, timing = 0;
+ u8 reg;
+
+ /* Find out which table to use */
+ tuning = ioread32(base + 0x04);
+
+ switch (adev->dma_mode) {
+ case XFER_UDMA_0:
+ timing = 0x00921250; break;
+ case XFER_UDMA_1:
+ timing = 0x00911140; break;
+ case XFER_UDMA_2:
+ timing = 0x00911030; break;
+ case XFER_MW_DMA_0:
+ timing = 0x00077771; break;
+ case XFER_MW_DMA_1:
+ timing = 0x00012121; break;
+ case XFER_MW_DMA_2:
+ timing = 0x00002020; break;
+ default:
+ BUG();
+ }
+ /* Merge in the PIO format bit */
+ timing |= (tuning & 0x80000000UL);
+ if (adev->devno == 0) /* Master */
+ iowrite32(timing, base + 0x04);
+ else {
+ if (timing & 0x00100000)
+ tuning |= 0x00100000; /* UDMA for both */
+ else
+ tuning &= ~0x00100000; /* MWDMA for both */
+ iowrite32(tuning, base + 0x04);
+ iowrite32(timing, base + 0x0C);
+ }
+
+ /* Set the DMA capable bit in the BMDMA area */
+ reg = ioread8(ap->ioaddr.bmdma_addr + ATA_DMA_STATUS);
+ reg |= (1 << (5 + adev->devno));
+ iowrite8(reg, ap->ioaddr.bmdma_addr + ATA_DMA_STATUS);
+
+ /* Remember the last DMA setup we did */
+
+ ap->private_data = adev;
+}
+
+
+/**
+ * cs5530_init_chip - Chipset init
+ * @gendev: device
+ *
+ * Perform the chip initialisation work that is shared between both
+ * setup and resume paths
+ */
+
+static int cs5530_init_chip(struct device *gendev)
+{
+ struct pci_dev *master_0 = NULL, *cs5530_0 = NULL, *dev = NULL;
+
+ while ((dev = pci_get_device(PCI_VENDOR_ID_CYRIX,
+ PCI_ANY_ID, dev)) != NULL) {
+ switch (dev->device) {
+ case PCI_DEVICE_ID_CYRIX_PCI_MASTER:
+ master_0 = pci_dev_get(dev);
+ break;
+ case PCI_DEVICE_ID_CYRIX_5530_LEGACY:
+ cs5530_0 = pci_dev_get(dev);
+ break;
+ }
+ }
+ if (!master_0) {
+ printk(KERN_ERR DRV_NAME
+ ": unable to locate PCI MASTER function\n");
+ goto fail_put;
+ }
+ if (!cs5530_0) {
+ printk(KERN_ERR DRV_NAME
+ ": unable to locate CS5530 LEGACY function\n");
+ goto fail_put;
+ }
+
+ pci_set_master(cs5530_0);
+ pci_try_set_mwi(cs5530_0);
+
+ /*
+ * Set PCI CacheLineSize to 16-bytes:
+ * --> Write 0x04 into 8-bit PCI CACHELINESIZE reg of function 0
+ *
+ * Note:
+ * This value is constant because the 5530 is only a Geode companion
+ */
+
+ pci_write_config_byte(cs5530_0, PCI_CACHE_LINE_SIZE, 0x04);
+
+ /*
+ * Disable trapping of UDMA register accesses (Win98 hack):
+ * --> Write 0x5006 into 16-bit reg at offset 0xd0 of function 0
+ */
+
+ pci_write_config_word(cs5530_0, 0xd0, 0x5006);
+
+ /*
+ * Bit-1 at 0x40 enables MemoryWriteAndInvalidate on internal X-bus:
+ * The other settings are what is necessary to get the register
+ * into a sane state for IDE DMA operation.
+ */
+
+ pci_write_config_byte(master_0, 0x40, 0x1e);
+
+ /*
+ * Set max PCI burst size (16-bytes seems to work best):
+ * 16bytes: set bit-1 at 0x41 (reg value of 0x16)
+ * all others: clear bit-1 at 0x41, and do:
+ * 128bytes: OR 0x00 at 0x41
+ * 256bytes: OR 0x04 at 0x41
+ * 512bytes: OR 0x08 at 0x41
+ * 1024bytes: OR 0x0c at 0x41
+ */
+
+ pci_write_config_byte(master_0, 0x41, 0x14);
+
+ /*
+ * These settings are necessary to get the chip
+ * into a sane state for IDE DMA operation.
+ */
+
+ pci_write_config_byte(master_0, 0x42, 0x00);
+ pci_write_config_byte(master_0, 0x43, 0xc1);
+
+ pci_dev_put(master_0);
+ pci_dev_put(cs5530_0);
+ return 0;
+fail_put:
+ if (master_0)
+ pci_dev_put(master_0);
+ if (cs5530_0)
+ pci_dev_put(cs5530_0);
+ return -EIO;
+}
--
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