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Subject[PATCH 33/68] pata_amd: move code to be re-used by ide2libata to pata_amd.h
From: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Subject: [PATCH] pata_amd: move code to be re-used by ide2libata to pata_amd.h

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
---
drivers/ata/pata_amd.c | 87 ----------------------------------------------
drivers/ata/pata_amd.h | 92 +++++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 93 insertions(+), 86 deletions(-)

Index: b/drivers/ata/pata_amd.c
===================================================================
--- a/drivers/ata/pata_amd.c
+++ b/drivers/ata/pata_amd.c
@@ -26,92 +26,7 @@
#define DRV_NAME "pata_amd"
#define DRV_VERSION "0.4.1"

-/**
- * timing_setup - shared timing computation and load
- * @ap: ATA port being set up
- * @adev: drive being configured
- * @offset: port offset
- * @speed: target speed
- * @clock: clock multiplier (number of times 33MHz for this part)
- *
- * Perform the actual timing set up for Nvidia or AMD PATA devices.
- * The actual devices vary so they all call into this helper function
- * providing the clock multipler and offset (because AMD and Nvidia put
- * the ports at different locations).
- */
-
-static void timing_setup(struct ata_port *ap, struct ata_device *adev, int offset, int speed, int clock)
-{
- static const unsigned char amd_cyc2udma[] = {
- 6, 6, 5, 4, 0, 1, 1, 2, 2, 3, 3, 3, 3, 3, 3, 7
- };
-
- struct pci_dev *pdev = to_pci_dev(ap->host->dev);
- struct ata_device *peer = ata_dev_pair(adev);
- int dn = ap->port_no * 2 + adev->devno;
- struct ata_timing at, apeer;
- int T, UT;
- const int amd_clock = 33333; /* KHz. */
- u8 t;
-
- T = 1000000000 / amd_clock;
- UT = T;
- if (clock >= 2)
- UT = T / 2;
-
- ata_timing_compute(adev->id, speed, adev->pio_mode, &at, T, UT);
-
- if (peer) {
- ata_timing_compute(peer->id, peer->pio_mode,
- peer->pio_mode, &apeer, T, UT);
- ata_timing_merge(&apeer, &at, &at, ATA_TIMING_8BIT);
- }
-
- if (speed == XFER_UDMA_5 && amd_clock <= 33333) at.udma = 1;
- if (speed == XFER_UDMA_6 && amd_clock <= 33333) at.udma = 15;
-
- /*
- * Now do the setup work
- */
-
- /* Configure the address set up timing */
- pci_read_config_byte(pdev, offset + 0x0C, &t);
- t = (t & ~(3 << ((3 - dn) << 1))) | ((clamp_val(at.setup, 1, 4) - 1) << ((3 - dn) << 1));
- pci_write_config_byte(pdev, offset + 0x0C , t);
-
- /* Configure the 8bit I/O timing */
- pci_write_config_byte(pdev, offset + 0x0E + (1 - (dn >> 1)),
- ((clamp_val(at.act8b, 1, 16) - 1) << 4) | (clamp_val(at.rec8b, 1, 16) - 1));
-
- /* Drive timing */
- pci_write_config_byte(pdev, offset + 0x08 + (3 - dn),
- ((clamp_val(at.active, 1, 16) - 1) << 4) | (clamp_val(at.recover, 1, 16) - 1));
-
- switch (clock) {
- case 1:
- t = at.udma ? (0xc0 | (clamp_val(at.udma, 2, 5) - 2)) : 0x03;
- break;
-
- case 2:
- t = at.udma ? (0xc0 | amd_cyc2udma[clamp_val(at.udma, 2, 10)]) : 0x03;
- break;
-
- case 3:
- t = at.udma ? (0xc0 | amd_cyc2udma[clamp_val(at.udma, 1, 10)]) : 0x03;
- break;
-
- case 4:
- t = at.udma ? (0xc0 | amd_cyc2udma[clamp_val(at.udma, 1, 15)]) : 0x03;
- break;
-
- default:
- return;
- }
-
- /* UDMA timing */
- if (at.udma)
- pci_write_config_byte(pdev, offset + 0x10 + (3 - dn), t);
-}
+#include "pata_amd.h"

/**
* amd_pre_reset - perform reset handling
Index: b/drivers/ata/pata_amd.h
===================================================================
--- /dev/null
+++ b/drivers/ata/pata_amd.h
@@ -0,0 +1,92 @@
+
+/**
+ * timing_setup - shared timing computation and load
+ * @ap: ATA port being set up
+ * @adev: drive being configured
+ * @offset: port offset
+ * @speed: target speed
+ * @clock: clock multiplier (number of times 33MHz for this part)
+ *
+ * Perform the actual timing set up for Nvidia or AMD PATA devices.
+ * The actual devices vary so they all call into this helper function
+ * providing the clock multipler and offset (because AMD and Nvidia put
+ * the ports at different locations).
+ */
+
+static void timing_setup(struct ata_port *ap, struct ata_device *adev,
+ int offset, int speed, int clock)
+{
+ static const unsigned char amd_cyc2udma[] = {
+ 6, 6, 5, 4, 0, 1, 1, 2, 2, 3, 3, 3, 3, 3, 3, 7
+ };
+
+ struct pci_dev *pdev = to_pci_dev(ap->host->dev);
+ struct ata_device *peer = ata_dev_pair(adev);
+ int dn = ap->port_no * 2 + adev->devno;
+ struct ata_timing at, apeer;
+ int T, UT;
+ const int amd_clock = 33333; /* KHz. */
+ u8 t;
+
+ T = 1000000000 / amd_clock;
+ UT = T;
+ if (clock >= 2)
+ UT = T / 2;
+
+ ata_timing_compute(adev->id, speed, adev->pio_mode, &at, T, UT);
+
+ if (peer) {
+ ata_timing_compute(peer->id, peer->pio_mode,
+ peer->pio_mode, &apeer, T, UT);
+ ata_timing_merge(&apeer, &at, &at, ATA_TIMING_8BIT);
+ }
+
+ if (speed == XFER_UDMA_5 && amd_clock <= 33333)
+ at.udma = 1;
+ if (speed == XFER_UDMA_6 && amd_clock <= 33333)
+ at.udma = 15;
+
+ /*
+ * Now do the setup work
+ */
+
+ /* Configure the address set up timing */
+ pci_read_config_byte(pdev, offset + 0x0C, &t);
+ t = (t & ~(3 << ((3 - dn) << 1))) |
+ ((clamp_val(at.setup, 1, 4) - 1) << ((3 - dn) << 1));
+ pci_write_config_byte(pdev, offset + 0x0C , t);
+
+ /* Configure the 8bit I/O timing */
+ pci_write_config_byte(pdev, offset + 0x0E + (1 - (dn >> 1)),
+ ((clamp_val(at.act8b, 1, 16) - 1) << 4) |
+ (clamp_val(at.rec8b, 1, 16) - 1));
+
+ /* Drive timing */
+ pci_write_config_byte(pdev, offset + 0x08 + (3 - dn),
+ ((clamp_val(at.active, 1, 16) - 1) << 4) |
+ (clamp_val(at.recover, 1, 16) - 1));
+
+ switch (clock) {
+ case 1:
+ t = at.udma ? (0xc0 | (clamp_val(at.udma, 2, 5) - 2)) : 0x03;
+ break;
+ case 2:
+ t = at.udma ? (0xc0 | amd_cyc2udma[clamp_val(at.udma, 2, 10)])
+ : 0x03;
+ break;
+ case 3:
+ t = at.udma ? (0xc0 | amd_cyc2udma[clamp_val(at.udma, 1, 10)])
+ : 0x03;
+ break;
+ case 4:
+ t = at.udma ? (0xc0 | amd_cyc2udma[clamp_val(at.udma, 1, 15)])
+ : 0x03;
+ break;
+ default:
+ return;
+ }
+
+ /* UDMA timing */
+ if (at.udma)
+ pci_write_config_byte(pdev, offset + 0x10 + (3 - dn), t);
+}

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