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Message-ID: <20070108122313.73c08d2e@localhost.localdomain>
Date: Mon, 8 Jan 2007 12:23:13 +0000
From: Alan <alan@...rguk.ukuu.org.uk>
To: jgarzik@...ox.com, linux-kernel@...r.kernel.org
Subject: [PATCH] extract duplicated constants out of PIIX like drivers
Each PIIX driver has two copies of a tiny 10 byte table. Jeff asked that
it was moved to a common place in each driver. Personally I think it
looked a lot better before but as Jeff is maintainer it's his call.
Signed-off-by: Alan Cox <alan@...hat.com>
diff -u --new-file --recursive --exclude-from /usr/src/exclude linux.vanilla-2.6.20-rc3-mm1/drivers/ata/ata_piix.c linux-2.6.20-rc3-mm1/drivers/ata/ata_piix.c
--- linux.vanilla-2.6.20-rc3-mm1/drivers/ata/ata_piix.c 2007-01-05 13:09:36.000000000 +0000
+++ linux-2.6.20-rc3-mm1/drivers/ata/ata_piix.c 2007-01-05 14:07:33.000000000 +0000
@@ -440,6 +440,21 @@
[ich8_sata_ahci] = &ich8_map_db,
};
+/*
+ * See Intel Document 298600-004 for the timing programing rules
+ * for ICH controllers.
+ */
+
+static const u8 intel_timings[][2] = {
+ /* ISP RTC */
+ { 0, 0 },
+ { 0, 0 },
+ { 1, 0 },
+ { 2, 1 },
+ { 2, 3 }
+};
+
+
static struct ata_port_info piix_port_info[] = {
/* piix_pata_33: 0: PIIX3 or 4 at 33MHz */
{
@@ -702,18 +717,6 @@
u8 udma_enable;
int control = 0;
- /*
- * See Intel Document 298600-004 for the timing programing rules
- * for ICH controllers.
- */
-
- static const /* ISP RTC */
- u8 timings[][2] = { { 0, 0 },
- { 0, 0 },
- { 1, 0 },
- { 2, 1 },
- { 2, 3 }, };
-
if (pio >= 2)
control |= 1; /* TIME1 enable */
if (ata_pio_need_iordy(adev))
@@ -732,15 +735,15 @@
pci_read_config_byte(dev, slave_port, &slave_data);
slave_data &= (ap->port_no ? 0x0f : 0xf0);
/* Load the timing nibble for this slave */
- slave_data |= ((timings[pio][0] << 2) | timings[pio][1]) << (ap->port_no ? 4 : 0);
+ slave_data |= ((intel_timings[pio][0] << 2) | intel_timings[pio][1]) << (ap->port_no ? 4 : 0);
} else {
/* Master keeps the bits in a different format */
master_data &= 0xccf8;
/* Enable PPE, IE and TIME as appropriate */
master_data |= control;
master_data |=
- (timings[pio][0] << 12) |
- (timings[pio][1] << 8);
+ (intel_timings[pio][0] << 12) |
+ (intel_timings[pio][1] << 8);
}
pci_write_config_word(dev, master_port, master_data);
if (is_slave)
@@ -778,13 +781,6 @@
int devid = adev->devno + 2 * ap->port_no;
u8 udma_enable;
- static const /* ISP RTC */
- u8 timings[][2] = { { 0, 0 },
- { 0, 0 },
- { 1, 0 },
- { 2, 1 },
- { 2, 3 }, };
-
pci_read_config_word(dev, master_port, &master_data);
pci_read_config_byte(dev, 0x48, &udma_enable);
@@ -855,15 +851,15 @@
pci_read_config_byte(dev, 0x44, &slave_data);
slave_data &= (0x0F + 0xE1 * ap->port_no);
/* Load the matching timing */
- slave_data |= ((timings[pio][0] << 2) | timings[pio][1]) << (ap->port_no ? 4 : 0);
+ slave_data |= ((intel_timings[pio][0] << 2) | intel_timings[pio][1]) << (ap->port_no ? 4 : 0);
pci_write_config_byte(dev, 0x44, slave_data);
} else { /* Master */
master_data &= 0xCCF4; /* Mask out IORDY|TIME1|DMAONLY
and master timing bits */
master_data |= control;
master_data |=
- (timings[pio][0] << 12) |
- (timings[pio][1] << 8);
+ (intel_timings[pio][0] << 12) |
+ (intel_timings[pio][1] << 8);
}
udma_enable &= ~(1 << devid);
pci_write_config_word(dev, master_port, master_data);
diff -u --new-file --recursive --exclude-from /usr/src/exclude linux.vanilla-2.6.20-rc3-mm1/drivers/ata/pata_efar.c linux-2.6.20-rc3-mm1/drivers/ata/pata_efar.c
--- linux.vanilla-2.6.20-rc3-mm1/drivers/ata/pata_efar.c 2007-01-05 13:08:50.000000000 +0000
+++ linux-2.6.20-rc3-mm1/drivers/ata/pata_efar.c 2007-01-05 14:03:26.000000000 +0000
@@ -24,6 +24,16 @@
#define DRV_NAME "pata_efar"
#define DRV_VERSION "0.4.3"
+static const u8 efar_timings[][2] = {
+ /* ISP RTC */
+ { 0, 0 },
+ { 0, 0 },
+ { 1, 0 },
+ { 2, 1 },
+ { 2, 3 },
+};
+
+
/**
* efar_pre_reset - check for 40/80 pin
* @ap: Port
@@ -90,13 +100,6 @@
* 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 > 2)
control |= 1; /* TIME1 enable */
if (ata_pio_need_iordy(adev)) /* PIO 3/4 require IORDY */
@@ -112,8 +115,8 @@
if (adev->devno == 0) {
idetm_data &= 0xCCF0;
idetm_data |= control;
- idetm_data |= (timings[pio][0] << 12) |
- (timings[pio][1] << 8);
+ idetm_data |= (efar_timings[pio][0] << 12) |
+ (efar_timings[pio][1] << 8);
} else {
int shift = 4 * ap->port_no;
u8 slave_data;
@@ -124,7 +127,7 @@
/* Slave timing in seperate register */
pci_read_config_byte(dev, 0x44, &slave_data);
slave_data &= 0x0F << shift;
- slave_data |= ((timings[pio][0] << 2) | timings[pio][1]) << shift;
+ slave_data |= ((efar_timings[pio][0] << 2) | efar_timings[pio][1]) << shift;
pci_write_config_byte(dev, 0x44, slave_data);
}
@@ -152,13 +155,6 @@
int devid = adev->devno + 2 * ap->port_no;
u8 udma_enable;
- static const /* ISP RTC */
- u8 timings[][2] = { { 0, 0 },
- { 0, 0 },
- { 1, 0 },
- { 2, 1 },
- { 2, 3 }, };
-
pci_read_config_word(dev, master_port, &master_data);
pci_read_config_byte(dev, 0x48, &udma_enable);
@@ -202,15 +198,15 @@
pci_read_config_byte(dev, 0x44, &slave_data);
slave_data &= (0x0F + 0xE1 * ap->port_no);
/* Load the matching timing */
- slave_data |= ((timings[pio][0] << 2) | timings[pio][1]) << (ap->port_no ? 4 : 0);
+ slave_data |= ((efar_timings[pio][0] << 2) | efar_timings[pio][1]) << (ap->port_no ? 4 : 0);
pci_write_config_byte(dev, 0x44, slave_data);
} else { /* Master */
master_data &= 0xCCF4; /* Mask out IORDY|TIME1|DMAONLY
and master timing bits */
master_data |= control;
master_data |=
- (timings[pio][0] << 12) |
- (timings[pio][1] << 8);
+ (efar_timings[pio][0] << 12) |
+ (efar_timings[pio][1] << 8);
}
udma_enable &= ~(1 << devid);
pci_write_config_word(dev, master_port, master_data);
diff -u --new-file --recursive --exclude-from /usr/src/exclude linux.vanilla-2.6.20-rc3-mm1/drivers/ata/pata_it8213.c linux-2.6.20-rc3-mm1/drivers/ata/pata_it8213.c
--- linux.vanilla-2.6.20-rc3-mm1/drivers/ata/pata_it8213.c 2007-01-05 13:09:36.000000000 +0000
+++ linux-2.6.20-rc3-mm1/drivers/ata/pata_it8213.c 2007-01-05 15:00:15.000000000 +0000
@@ -19,7 +19,7 @@
#include <linux/ata.h>
#define DRV_NAME "pata_it8213"
-#define DRV_VERSION "0.0.2"
+#define DRV_VERSION "0.0.3"
/**
* it8213_pre_reset - check for 40/80 pin
@@ -62,6 +62,21 @@
ata_bmdma_drive_eh(ap, it8213_pre_reset, ata_std_softreset, NULL, ata_std_postreset);
}
+/*
+ * See Intel Document 298600-004 for the timing programing rules
+ * for PIIX/ICH. The 8213 is sort of a clone so very similar.
+ */
+
+static const u8 it8213_timings[][2]= {
+ /* ISP RTC */
+ { 0, 0 },
+ { 0, 0 },
+ { 1, 0 },
+ { 2, 1 },
+ { 2, 3 }
+};
+
+
/**
* it8213_set_piomode - Initialize host controller PATA PIO timings
* @ap: Port whose timings we are configuring
@@ -81,18 +96,6 @@
u16 idetm_data;
int control = 0;
- /*
- * See Intel Document 298600-004 for the timing programing rules
- * for PIIX/ICH. The 8213 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 > 2)
control |= 1; /* TIME1 enable */
if (ata_pio_need_iordy(adev)) /* PIO 3/4 require IORDY */
@@ -108,8 +111,8 @@
if (adev->devno == 0) {
idetm_data &= 0xCCF0;
idetm_data |= control;
- idetm_data |= (timings[pio][0] << 12) |
- (timings[pio][1] << 8);
+ idetm_data |= (it8213_timings[pio][0] << 12) |
+ (it8213_timings[pio][1] << 8);
} else {
u8 slave_data;
@@ -119,7 +122,7 @@
/* Slave timing in seperate register */
pci_read_config_byte(dev, 0x44, &slave_data);
slave_data &= 0xF0;
- slave_data |= ((timings[pio][0] << 2) | timings[pio][1]) << 4;
+ slave_data |= ((it8213_timings[pio][0] << 2) | it8213_timings[pio][1]) << 4;
pci_write_config_byte(dev, 0x44, slave_data);
}
@@ -148,7 +151,7 @@
u8 udma_enable;
static const /* ISP RTC */
- u8 timings[][2] = { { 0, 0 },
+ u8 it8213_timings[][2] = { { 0, 0 },
{ 0, 0 },
{ 1, 0 },
{ 2, 1 },
@@ -214,15 +217,15 @@
pci_read_config_byte(dev, 0x44, &slave_data);
slave_data &= (0x0F + 0xE1 * ap->port_no);
/* Load the matching timing */
- slave_data |= ((timings[pio][0] << 2) | timings[pio][1]) << (ap->port_no ? 4 : 0);
+ slave_data |= ((it8213_timings[pio][0] << 2) | it8213_timings[pio][1]) << (ap->port_no ? 4 : 0);
pci_write_config_byte(dev, 0x44, slave_data);
} else { /* Master */
master_data &= 0xCCF4; /* Mask out IORDY|TIME1|DMAONLY
and master timing bits */
master_data |= control;
master_data |=
- (timings[pio][0] << 12) |
- (timings[pio][1] << 8);
+ (it8213_timings[pio][0] << 12) |
+ (it8213_timings[pio][1] << 8);
}
udma_enable &= ~(1 << devid);
pci_write_config_word(dev, 0x40, master_data);
-
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