[PATCH v1 2/4]nand/denali: use iowrite32() to replace denali_write32()
Chuanxiao.Dong
chuanxiao.dong at intel.com
Mon Aug 9 12:22:17 EDT 2010
From 4104cf1a8f6c2fa0bd4a82eeedb4f0a6d3b277ef Mon Sep 17 00:00:00 2001
From: Chuanxiao Dong <chuanxiao.dong at intel.com>
Date: Mon, 9 Aug 2010 23:59:23 +0800
Subject: [PATCH 2/4] nand/denali: use iowrite32() to replace denali_write32()
denali_write32() just implements a debug function for iowrite32(),
only print out the write value. Remove this function since it's useless
Signed-off-by: Chuanxiao Dong <chuanxiao.dong at intel.com>
---
drivers/mtd/nand/denali.c | 138 ++++++++++++++++++++-------------------------
1 files changed, 62 insertions(+), 76 deletions(-)
diff --git a/drivers/mtd/nand/denali.c b/drivers/mtd/nand/denali.c
index b8b7b93..b255b41 100644
--- a/drivers/mtd/nand/denali.c
+++ b/drivers/mtd/nand/denali.c
@@ -132,20 +132,6 @@ static uint32_t read_interrupt_status(struct denali_nand_info *denali);
#define DEBUG_DENALI 0
-/* This is a wrapper for writing to the denali registers.
- * this allows us to create debug information so we can
- * observe how the driver is programming the device.
- * it uses standard linux convention for (val, addr) */
-static void denali_write32(uint32_t value, void *addr)
-{
- iowrite32(value, addr);
-
-#if DEBUG_DENALI
- printk(KERN_INFO "wrote: 0x%x -> 0x%x\n", value,
- (uint32_t)((uint32_t)addr & 0x1fff));
-#endif
-}
-
/* Certain operations for the denali NAND controller use
* an indexed mode to read/write data. The operation is
* performed by writing the address value of the command
@@ -155,15 +141,15 @@ static void denali_write32(uint32_t value, void *addr)
static void index_addr(struct denali_nand_info *denali,
uint32_t address, uint32_t data)
{
- denali_write32(address, denali->flash_mem);
- denali_write32(data, denali->flash_mem + 0x10);
+ iowrite32(address, denali->flash_mem);
+ iowrite32(data, denali->flash_mem + 0x10);
}
/* Perform an indexed read of the device */
static void index_addr_read_data(struct denali_nand_info *denali,
uint32_t address, uint32_t *pdata)
{
- denali_write32(address, denali->flash_mem);
+ iowrite32(address, denali->flash_mem);
*pdata = ioread32(denali->flash_mem + 0x10);
}
@@ -191,7 +177,7 @@ static void read_status(struct denali_nand_info *denali)
/* initiate a device status read */
cmd = MODE_11 | BANK(denali->flash_bank);
index_addr(denali, cmd | COMMAND_CYCLE, 0x70);
- denali_write32(cmd | STATUS_CYCLE, denali->flash_mem);
+ iowrite32(cmd | STATUS_CYCLE, denali->flash_mem);
/* update buffer with status value */
write_byte_to_buf(denali, ioread32(denali->flash_mem + 0x10));
@@ -213,7 +199,7 @@ static void reset_bank(struct denali_nand_info *denali)
clear_interrupts(denali);
bank = device_reset_banks[denali->flash_bank];
- denali_write32(bank, denali->flash_reg + DEVICE_RESET);
+ iowrite32(bank, denali->flash_reg + DEVICE_RESET);
irq_status = wait_for_irq(denali, irq_mask);
@@ -230,11 +216,11 @@ static uint16_t denali_nand_reset(struct denali_nand_info *denali)
__FILE__, __LINE__, __func__);
for (i = 0 ; i < LLD_MAX_FLASH_BANKS; i++)
- denali_write32(reset_complete[i] | operation_timeout[i],
+ iowrite32(reset_complete[i] | operation_timeout[i],
denali->flash_reg + intr_status_addresses[i]);
for (i = 0 ; i < LLD_MAX_FLASH_BANKS; i++) {
- denali_write32(device_reset_banks[i],
+ iowrite32(device_reset_banks[i],
denali->flash_reg + DEVICE_RESET);
while (!(ioread32(denali->flash_reg +
intr_status_addresses[i]) &
@@ -247,7 +233,7 @@ static uint16_t denali_nand_reset(struct denali_nand_info *denali)
}
for (i = 0; i < LLD_MAX_FLASH_BANKS; i++)
- denali_write32(reset_complete[i] | operation_timeout[i],
+ iowrite32(reset_complete[i] | operation_timeout[i],
denali->flash_reg + intr_status_addresses[i]);
return PASS;
@@ -345,14 +331,14 @@ static void nand_onfi_timing_set(struct denali_nand_info *denali,
(ioread32(denali->flash_reg + DEVICE_ID) == 0x88))
acc_clks = 6;
- denali_write32(acc_clks, denali->flash_reg + ACC_CLKS);
- denali_write32(re_2_we, denali->flash_reg + RE_2_WE);
- denali_write32(re_2_re, denali->flash_reg + RE_2_RE);
- denali_write32(we_2_re, denali->flash_reg + WE_2_RE);
- denali_write32(addr_2_data, denali->flash_reg + ADDR_2_DATA);
- denali_write32(en_lo, denali->flash_reg + RDWR_EN_LO_CNT);
- denali_write32(en_hi, denali->flash_reg + RDWR_EN_HI_CNT);
- denali_write32(cs_cnt, denali->flash_reg + CS_SETUP_CNT);
+ iowrite32(acc_clks, denali->flash_reg + ACC_CLKS);
+ iowrite32(re_2_we, denali->flash_reg + RE_2_WE);
+ iowrite32(re_2_re, denali->flash_reg + RE_2_RE);
+ iowrite32(we_2_re, denali->flash_reg + WE_2_RE);
+ iowrite32(addr_2_data, denali->flash_reg + ADDR_2_DATA);
+ iowrite32(en_lo, denali->flash_reg + RDWR_EN_LO_CNT);
+ iowrite32(en_hi, denali->flash_reg + RDWR_EN_HI_CNT);
+ iowrite32(cs_cnt, denali->flash_reg + CS_SETUP_CNT);
}
/* queries the NAND device to see what ONFI modes it supports. */
@@ -387,13 +373,13 @@ static void get_samsung_nand_para(struct denali_nand_info *denali,
{
if (device_id == 0xd3) { /* Samsung K9WAG08U1A */
/* Set timing register values according to datasheet */
- denali_write32(5, denali->flash_reg + ACC_CLKS);
- denali_write32(20, denali->flash_reg + RE_2_WE);
- denali_write32(12, denali->flash_reg + WE_2_RE);
- denali_write32(14, denali->flash_reg + ADDR_2_DATA);
- denali_write32(3, denali->flash_reg + RDWR_EN_LO_CNT);
- denali_write32(2, denali->flash_reg + RDWR_EN_HI_CNT);
- denali_write32(2, denali->flash_reg + CS_SETUP_CNT);
+ iowrite32(5, denali->flash_reg + ACC_CLKS);
+ iowrite32(20, denali->flash_reg + RE_2_WE);
+ iowrite32(12, denali->flash_reg + WE_2_RE);
+ iowrite32(14, denali->flash_reg + ADDR_2_DATA);
+ iowrite32(3, denali->flash_reg + RDWR_EN_LO_CNT);
+ iowrite32(2, denali->flash_reg + RDWR_EN_HI_CNT);
+ iowrite32(2, denali->flash_reg + CS_SETUP_CNT);
}
}
@@ -405,15 +391,15 @@ static void get_toshiba_nand_para(struct denali_nand_info *denali)
/* spare area size for some kind of Toshiba NAND device */
if ((ioread32(denali->flash_reg + DEVICE_MAIN_AREA_SIZE) == 4096) &&
(ioread32(denali->flash_reg + DEVICE_SPARE_AREA_SIZE) == 64)) {
- denali_write32(216, denali->flash_reg + DEVICE_SPARE_AREA_SIZE);
+ iowrite32(216, denali->flash_reg + DEVICE_SPARE_AREA_SIZE);
tmp = ioread32(denali->flash_reg + DEVICES_CONNECTED) *
ioread32(denali->flash_reg + DEVICE_SPARE_AREA_SIZE);
- denali_write32(tmp,
+ iowrite32(tmp,
denali->flash_reg + LOGICAL_PAGE_SPARE_SIZE);
#if SUPPORT_15BITECC
- denali_write32(15, denali->flash_reg + ECC_CORRECTION);
+ iowrite32(15, denali->flash_reg + ECC_CORRECTION);
#elif SUPPORT_8BITECC
- denali_write32(8, denali->flash_reg + ECC_CORRECTION);
+ iowrite32(8, denali->flash_reg + ECC_CORRECTION);
#endif
}
}
@@ -426,22 +412,22 @@ static void get_hynix_nand_para(struct denali_nand_info *denali,
switch (device_id) {
case 0xD5: /* Hynix H27UAG8T2A, H27UBG8U5A or H27UCG8VFA */
case 0xD7: /* Hynix H27UDG8VEM, H27UCG8UDM or H27UCG8V5A */
- denali_write32(128, denali->flash_reg + PAGES_PER_BLOCK);
- denali_write32(4096, denali->flash_reg + DEVICE_MAIN_AREA_SIZE);
- denali_write32(224, denali->flash_reg + DEVICE_SPARE_AREA_SIZE);
+ iowrite32(128, denali->flash_reg + PAGES_PER_BLOCK);
+ iowrite32(4096, denali->flash_reg + DEVICE_MAIN_AREA_SIZE);
+ iowrite32(224, denali->flash_reg + DEVICE_SPARE_AREA_SIZE);
main_size = 4096 *
ioread32(denali->flash_reg + DEVICES_CONNECTED);
spare_size = 224 *
ioread32(denali->flash_reg + DEVICES_CONNECTED);
- denali_write32(main_size,
+ iowrite32(main_size,
denali->flash_reg + LOGICAL_PAGE_DATA_SIZE);
- denali_write32(spare_size,
+ iowrite32(spare_size,
denali->flash_reg + LOGICAL_PAGE_SPARE_SIZE);
- denali_write32(0, denali->flash_reg + DEVICE_WIDTH);
+ iowrite32(0, denali->flash_reg + DEVICE_WIDTH);
#if SUPPORT_15BITECC
- denali_write32(15, denali->flash_reg + ECC_CORRECTION);
+ iowrite32(15, denali->flash_reg + ECC_CORRECTION);
#elif SUPPORT_8BITECC
- denali_write32(8, denali->flash_reg + ECC_CORRECTION);
+ iowrite32(8, denali->flash_reg + ECC_CORRECTION);
#endif
break;
default:
@@ -586,9 +572,9 @@ static void denali_set_intr_modes(struct denali_nand_info *denali,
__FILE__, __LINE__, __func__);
if (INT_ENABLE)
- denali_write32(1, denali->flash_reg + GLOBAL_INT_ENABLE);
+ iowrite32(1, denali->flash_reg + GLOBAL_INT_ENABLE);
else
- denali_write32(0, denali->flash_reg + GLOBAL_INT_ENABLE);
+ iowrite32(0, denali->flash_reg + GLOBAL_INT_ENABLE);
}
/* validation function to verify that the controlling software is making
@@ -609,10 +595,10 @@ static void denali_irq_init(struct denali_nand_info *denali)
int_mask = DENALI_IRQ_ALL;
/* Clear all status bits */
- denali_write32(0xFFFF, denali->flash_reg + INTR_STATUS0);
- denali_write32(0xFFFF, denali->flash_reg + INTR_STATUS1);
- denali_write32(0xFFFF, denali->flash_reg + INTR_STATUS2);
- denali_write32(0xFFFF, denali->flash_reg + INTR_STATUS3);
+ iowrite32(0xFFFF, denali->flash_reg + INTR_STATUS0);
+ iowrite32(0xFFFF, denali->flash_reg + INTR_STATUS1);
+ iowrite32(0xFFFF, denali->flash_reg + INTR_STATUS2);
+ iowrite32(0xFFFF, denali->flash_reg + INTR_STATUS3);
denali_irq_enable(denali, int_mask);
}
@@ -626,10 +612,10 @@ static void denali_irq_cleanup(int irqnum, struct denali_nand_info *denali)
static void denali_irq_enable(struct denali_nand_info *denali,
uint32_t int_mask)
{
- denali_write32(int_mask, denali->flash_reg + INTR_EN0);
- denali_write32(int_mask, denali->flash_reg + INTR_EN1);
- denali_write32(int_mask, denali->flash_reg + INTR_EN2);
- denali_write32(int_mask, denali->flash_reg + INTR_EN3);
+ iowrite32(int_mask, denali->flash_reg + INTR_EN0);
+ iowrite32(int_mask, denali->flash_reg + INTR_EN1);
+ iowrite32(int_mask, denali->flash_reg + INTR_EN2);
+ iowrite32(int_mask, denali->flash_reg + INTR_EN3);
}
/* This function only returns when an interrupt that this driver cares about
@@ -648,7 +634,7 @@ static inline void clear_interrupt(struct denali_nand_info *denali,
intr_status_reg = intr_status_addresses[denali->flash_bank];
- denali_write32(irq_mask, denali->flash_reg + intr_status_reg);
+ iowrite32(irq_mask, denali->flash_reg + intr_status_reg);
}
static void clear_interrupts(struct denali_nand_info *denali)
@@ -800,8 +786,8 @@ static void setup_ecc_for_xfer(struct denali_nand_info *denali, bool ecc_en,
transfer_spare_flag = transfer_spare ? TRANSFER_SPARE_REG__FLAG : 0;
/* Enable spare area/ECC per user's request. */
- denali_write32(ecc_en_flag, denali->flash_reg + ECC_ENABLE);
- denali_write32(transfer_spare_flag,
+ iowrite32(ecc_en_flag, denali->flash_reg + ECC_ENABLE);
+ iowrite32(transfer_spare_flag,
denali->flash_reg + TRANSFER_SPARE_REG);
}
@@ -844,14 +830,14 @@ static int denali_send_pipeline_cmd(struct denali_nand_info *denali,
if (op == DENALI_WRITE && access_type != SPARE_ACCESS) {
cmd = MODE_01 | addr;
- denali_write32(cmd, denali->flash_mem);
+ iowrite32(cmd, denali->flash_mem);
} else if (op == DENALI_WRITE && access_type == SPARE_ACCESS) {
/* read spare area */
cmd = MODE_10 | addr;
index_addr(denali, (uint32_t)cmd, access_type);
cmd = MODE_01 | addr;
- denali_write32(cmd, denali->flash_mem);
+ iowrite32(cmd, denali->flash_mem);
} else if (op == DENALI_READ) {
/* setup page read request for access type */
cmd = MODE_10 | addr;
@@ -863,7 +849,7 @@ static int denali_send_pipeline_cmd(struct denali_nand_info *denali,
*/
if (access_type == SPARE_ACCESS) {
cmd = MODE_01 | addr;
- denali_write32(cmd, denali->flash_mem);
+ iowrite32(cmd, denali->flash_mem);
} else {
index_addr(denali, (uint32_t)cmd,
0x2000 | op | page_count);
@@ -881,7 +867,7 @@ static int denali_send_pipeline_cmd(struct denali_nand_info *denali,
status = FAIL;
} else {
cmd = MODE_01 | addr;
- denali_write32(cmd, denali->flash_mem);
+ iowrite32(cmd, denali->flash_mem);
}
}
}
@@ -902,7 +888,7 @@ static int write_data_to_flash_mem(struct denali_nand_info *denali,
/* write the data to the flash memory */
buf32 = (uint32_t *)buf;
for (i = 0; i < len / 4; i++)
- denali_write32(*buf32++, denali->flash_mem + 0x10);
+ iowrite32(*buf32++, denali->flash_mem + 0x10);
return i*4; /* intent is to return the number of bytes read */
}
@@ -1100,7 +1086,7 @@ static void denali_enable_dma(struct denali_nand_info *denali, bool en)
if (en)
reg_val = DMA_ENABLE__FLAG;
- denali_write32(reg_val, denali->flash_reg + DMA_ENABLE);
+ iowrite32(reg_val, denali->flash_reg + DMA_ENABLE);
ioread32(denali->flash_reg + DMA_ENABLE);
}
@@ -1447,16 +1433,16 @@ static void denali_hw_init(struct denali_nand_info *denali)
SPARE_AREA_SKIP_BYTES);
denali_irq_init(denali);
denali_nand_reset(denali);
- denali_write32(0x0F, denali->flash_reg + RB_PIN_ENABLED);
- denali_write32(CHIP_EN_DONT_CARE__FLAG,
+ iowrite32(0x0F, denali->flash_reg + RB_PIN_ENABLED);
+ iowrite32(CHIP_EN_DONT_CARE__FLAG,
denali->flash_reg + CHIP_ENABLE_DONT_CARE);
- denali_write32(0x0, denali->flash_reg + SPARE_AREA_SKIP_BYTES);
- denali_write32(0xffff, denali->flash_reg + SPARE_AREA_MARKER);
+ iowrite32(0x0, denali->flash_reg + SPARE_AREA_SKIP_BYTES);
+ iowrite32(0xffff, denali->flash_reg + SPARE_AREA_MARKER);
/* Should set value for these registers when init */
- denali_write32(0, denali->flash_reg + TWO_ROW_ADDR_CYCLES);
- denali_write32(1, denali->flash_reg + ECC_ENABLE);
+ iowrite32(0, denali->flash_reg + TWO_ROW_ADDR_CYCLES);
+ iowrite32(1, denali->flash_reg + ECC_ENABLE);
}
/* Althogh controller spec said SLC ECC is forceb to be 4bit,
@@ -1718,7 +1704,7 @@ static int denali_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
/* if MLC OOB size is large enough, use 15bit ECC*/
denali->nand.ecc.layout = &nand_15bit_oob;
denali->nand.ecc.bytes = ECC_15BITS;
- denali_write32(15, denali->flash_reg + ECC_CORRECTION);
+ iowrite32(15, denali->flash_reg + ECC_CORRECTION);
} else if (denali->mtd.oobsize < (denali->bbtskipbytes +
ECC_8BITS * (denali->mtd.writesize /
ECC_SECTOR_SIZE))) {
@@ -1728,7 +1714,7 @@ static int denali_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
} else {
denali->nand.ecc.layout = &nand_8bit_oob;
denali->nand.ecc.bytes = ECC_8BITS;
- denali_write32(8, denali->flash_reg + ECC_CORRECTION);
+ iowrite32(8, denali->flash_reg + ECC_CORRECTION);
}
denali->nand.ecc.bytes *= denali->devnum;
--
1.6.6.1
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