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[libata] sata_sx4: named constant cleanup 

* convert tabs to spaces
* convert some hex numbers to (1 << n) preferred format
* document i2c and timer control register bits

Signed-off-by: Jeff Garzik <jeff@garzik.org>
hifive-unleashed-5.1
Jeff Garzik 2007-05-27 22:58:54 -04:00
parent 5d4c51f6be
commit b2d46b61bd
1 changed files with 63 additions and 52 deletions
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115
drivers/ata/sata_sx4.c
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@ -87,48 +87,59 @@ enum {
board_20621 = 0, /* FastTrak S150 SX4 */
PDC_RESET = (1 << 11), /* HDMA reset */
PDC_MASK_INT = (1 << 10), /* HDMA/ATA mask int */
PDC_RESET = (1 << 11), /* HDMA/ATA reset */
PDC_MAX_HDMA = 32,
PDC_HDMA_Q_MASK = (PDC_MAX_HDMA - 1),
PDC_DIMM0_SPD_DEV_ADDRESS = 0x50,
PDC_DIMM1_SPD_DEV_ADDRESS = 0x51,
PDC_MAX_DIMM_MODULE = 0x02,
PDC_I2C_CONTROL_OFFSET = 0x48,
PDC_I2C_ADDR_DATA_OFFSET = 0x4C,
PDC_DIMM0_CONTROL_OFFSET = 0x80,
PDC_DIMM1_CONTROL_OFFSET = 0x84,
PDC_SDRAM_CONTROL_OFFSET = 0x88,
PDC_I2C_WRITE = 0x00000000,
PDC_I2C_READ = 0x00000040,
PDC_I2C_START = 0x00000080,
PDC_I2C_MASK_INT = 0x00000020,
PDC_I2C_COMPLETE = 0x00010000,
PDC_I2C_NO_ACK = 0x00100000,
PDC_DIMM_SPD_SUBADDRESS_START = 0x00,
PDC_DIMM_SPD_SUBADDRESS_END = 0x7F,
PDC_DIMM_SPD_ROW_NUM = 3,
PDC_DIMM_SPD_COLUMN_NUM = 4,
PDC_DIMM_SPD_MODULE_ROW = 5,
PDC_DIMM_SPD_TYPE = 11,
PDC_DIMM_SPD_FRESH_RATE = 12,
PDC_DIMM_SPD_BANK_NUM = 17,
PDC_DIMM_SPD_CAS_LATENCY = 18,
PDC_DIMM_SPD_ATTRIBUTE = 21,
PDC_DIMM_SPD_ROW_PRE_CHARGE = 27,
PDC_DIMM_SPD_ROW_ACTIVE_DELAY = 28,
PDC_DIMM_SPD_RAS_CAS_DELAY = 29,
PDC_DIMM_SPD_ACTIVE_PRECHARGE = 30,
PDC_DIMM_SPD_SYSTEM_FREQ = 126,
PDC_CTL_STATUS = 0x08,
PDC_DIMM_WINDOW_CTLR = 0x0C,
PDC_TIME_CONTROL = 0x3C,
PDC_TIME_PERIOD = 0x40,
PDC_TIME_COUNTER = 0x44,
PDC_GENERAL_CTLR = 0x484,
PCI_PLL_INIT = 0x8A531824,
PCI_X_TCOUNT = 0xEE1E5CFF
PDC_DIMM0_SPD_DEV_ADDRESS = 0x50,
PDC_DIMM1_SPD_DEV_ADDRESS = 0x51,
PDC_I2C_CONTROL = 0x48,
PDC_I2C_ADDR_DATA = 0x4C,
PDC_DIMM0_CONTROL = 0x80,
PDC_DIMM1_CONTROL = 0x84,
PDC_SDRAM_CONTROL = 0x88,
PDC_I2C_WRITE = 0, /* master -> slave */
PDC_I2C_READ = (1 << 6), /* master <- slave */
PDC_I2C_START = (1 << 7), /* start I2C proto */
PDC_I2C_MASK_INT = (1 << 5), /* mask I2C interrupt */
PDC_I2C_COMPLETE = (1 << 16), /* I2C normal compl. */
PDC_I2C_NO_ACK = (1 << 20), /* slave no-ack addr */
PDC_DIMM_SPD_SUBADDRESS_START = 0x00,
PDC_DIMM_SPD_SUBADDRESS_END = 0x7F,
PDC_DIMM_SPD_ROW_NUM = 3,
PDC_DIMM_SPD_COLUMN_NUM = 4,
PDC_DIMM_SPD_MODULE_ROW = 5,
PDC_DIMM_SPD_TYPE = 11,
PDC_DIMM_SPD_FRESH_RATE = 12,
PDC_DIMM_SPD_BANK_NUM = 17,
PDC_DIMM_SPD_CAS_LATENCY = 18,
PDC_DIMM_SPD_ATTRIBUTE = 21,
PDC_DIMM_SPD_ROW_PRE_CHARGE = 27,
PDC_DIMM_SPD_ROW_ACTIVE_DELAY = 28,
PDC_DIMM_SPD_RAS_CAS_DELAY = 29,
PDC_DIMM_SPD_ACTIVE_PRECHARGE = 30,
PDC_DIMM_SPD_SYSTEM_FREQ = 126,
PDC_CTL_STATUS = 0x08,
PDC_DIMM_WINDOW_CTLR = 0x0C,
PDC_TIME_CONTROL = 0x3C,
PDC_TIME_PERIOD = 0x40,
PDC_TIME_COUNTER = 0x44,
PDC_GENERAL_CTLR = 0x484,
PCI_PLL_INIT = 0x8A531824,
PCI_X_TCOUNT = 0xEE1E5CFF,
/* PDC_TIME_CONTROL bits */
PDC_TIMER_BUZZER = (1 << 10),
PDC_TIMER_MODE_PERIODIC = 0, /* bits 9:8 == 00 */
PDC_TIMER_MODE_ONCE = (1 << 8), /* bits 9:8 == 01 */
PDC_TIMER_ENABLE = (1 << 7),
PDC_TIMER_MASK_INT = (1 << 5),
PDC_TIMER_SEQ_MASK = 0x1f, /* SEQ ID for timer */
PDC_TIMER_DEFAULT = PDC_TIMER_MODE_ONCE |
PDC_TIMER_ENABLE |
PDC_TIMER_MASK_INT,
};
@ -999,17 +1010,17 @@ static unsigned int pdc20621_i2c_read(struct ata_host *host, u32 device,
i2creg |= subaddr << 16;
/* Set the device and subaddress */
writel(i2creg, mmio + PDC_I2C_ADDR_DATA_OFFSET);
readl(mmio + PDC_I2C_ADDR_DATA_OFFSET);
writel(i2creg, mmio + PDC_I2C_ADDR_DATA);
readl(mmio + PDC_I2C_ADDR_DATA);
/* Write Control to perform read operation, mask int */
writel(PDC_I2C_READ | PDC_I2C_START | PDC_I2C_MASK_INT,
mmio + PDC_I2C_CONTROL_OFFSET);
mmio + PDC_I2C_CONTROL);
for (count = 0; count <= 1000; count ++) {
status = readl(mmio + PDC_I2C_CONTROL_OFFSET);
status = readl(mmio + PDC_I2C_CONTROL);
if (status & PDC_I2C_COMPLETE) {
status = readl(mmio + PDC_I2C_ADDR_DATA_OFFSET);
status = readl(mmio + PDC_I2C_ADDR_DATA);
break;
} else if (count == 1000)
return 0;
@ -1099,8 +1110,8 @@ static int pdc20621_prog_dimm0(struct ata_host *host)
data |= (((size / 16) - 1) << 16);
data |= (0 << 23);
data |= 8;
writel(data, mmio + PDC_DIMM0_CONTROL_OFFSET);
readl(mmio + PDC_DIMM0_CONTROL_OFFSET);
writel(data, mmio + PDC_DIMM0_CONTROL);
readl(mmio + PDC_DIMM0_CONTROL);
return size;
}
@ -1122,27 +1133,27 @@ static unsigned int pdc20621_prog_dimm_global(struct ata_host *host)
*/
data = 0x022259F1;
writel(data, mmio + PDC_SDRAM_CONTROL_OFFSET);
readl(mmio + PDC_SDRAM_CONTROL_OFFSET);
writel(data, mmio + PDC_SDRAM_CONTROL);
readl(mmio + PDC_SDRAM_CONTROL);
/* Turn on for ECC */
pdc20621_i2c_read(host, PDC_DIMM0_SPD_DEV_ADDRESS,
PDC_DIMM_SPD_TYPE, &spd0);
if (spd0 == 0x02) {
data |= (0x01 << 16);
writel(data, mmio + PDC_SDRAM_CONTROL_OFFSET);
readl(mmio + PDC_SDRAM_CONTROL_OFFSET);
writel(data, mmio + PDC_SDRAM_CONTROL);
readl(mmio + PDC_SDRAM_CONTROL);
printk(KERN_ERR "Local DIMM ECC Enabled\n");
}
/* DIMM Initialization Select/Enable (bit 18/19) */
data &= (~(1<<18));
data |= (1<<19);
writel(data, mmio + PDC_SDRAM_CONTROL_OFFSET);
writel(data, mmio + PDC_SDRAM_CONTROL);
error = 1;
for (i = 1; i <= 10; i++) { /* polling ~5 secs */
data = readl(mmio + PDC_SDRAM_CONTROL_OFFSET);
data = readl(mmio + PDC_SDRAM_CONTROL);
if (!(data & (1<<19))) {
error = 0;
break;
@ -1176,7 +1187,7 @@ static unsigned int pdc20621_dimm_init(struct ata_host *host)
VPRINTK("Time Period Register (0x40): 0x%x\n", time_period);
/* Enable timer */
writel(0x00001a0, mmio + PDC_TIME_CONTROL);
writel(PDC_TIMER_DEFAULT, mmio + PDC_TIME_CONTROL);
readl(mmio + PDC_TIME_CONTROL);
/* Wait 3 seconds */