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fsl_ifc: Change IO accessor based on endianness

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IFC IO accressor are set at run time based
on IFC IP registers endianness.IFC node in
DTS file contains information about
endianness.

Signed-off-by: Jaiprakash Singh <b44839@freescale.com>
Signed-off-by: Scott Wood <scottwood@freescale.com>
Acked-by: Brian Norris <computersforpeace@gmail.com>
This commit is contained in:
Jaiprakash Singh 2015-05-20 21:17:11 -05:00 committed by Scott Wood
parent 3fa647bff3
commit cf184dc2dd
4 changed files with 212 additions and 140 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
Documentation/devicetree/bindings/memory-controllers/fsl/ifc.txt
View File

@ -18,6 +18,8 @@ Properties:
interrupt (NAND_EVTER_STAT). If there is only one,
that interrupt reports both types of event.
- little-endian : If this property is absent, the big-endian mode will
be in use as default for registers.
- ranges : Each range corresponds to a single chipselect, and covers
the entire access window as configured.
@ -34,6 +36,7 @@ Example:
#size-cells = <1>;
reg = <0x0 0xffe1e000 0 0x2000>;
interrupts = <16 2 19 2>;
little-endian;
/* NOR, NAND Flashes and CPLD on board */
ranges = <0x0 0x0 0x0 0xee000000 0x02000000

43
drivers/memory/fsl_ifc.c
View File

@ -62,7 +62,7 @@ int fsl_ifc_find(phys_addr_t addr_base)
return -ENODEV;
for (i = 0; i < fsl_ifc_ctrl_dev->banks; i++) {
u32 cspr = in_be32(&fsl_ifc_ctrl_dev->regs->cspr_cs[i].cspr);
u32 cspr = ifc_in32(&fsl_ifc_ctrl_dev->regs->cspr_cs[i].cspr);
if (cspr & CSPR_V && (cspr & CSPR_BA) ==
convert_ifc_address(addr_base))
return i;
@ -79,16 +79,16 @@ static int fsl_ifc_ctrl_init(struct fsl_ifc_ctrl *ctrl)
/*
* Clear all the common status and event registers
*/
if (in_be32(&ifc->cm_evter_stat) & IFC_CM_EVTER_STAT_CSER)
out_be32(&ifc->cm_evter_stat, IFC_CM_EVTER_STAT_CSER);
if (ifc_in32(&ifc->cm_evter_stat) & IFC_CM_EVTER_STAT_CSER)
ifc_out32(IFC_CM_EVTER_STAT_CSER, &ifc->cm_evter_stat);
/* enable all error and events */
out_be32(&ifc->cm_evter_en, IFC_CM_EVTER_EN_CSEREN);
ifc_out32(IFC_CM_EVTER_EN_CSEREN, &ifc->cm_evter_en);
/* enable all error and event interrupts */
out_be32(&ifc->cm_evter_intr_en, IFC_CM_EVTER_INTR_EN_CSERIREN);
out_be32(&ifc->cm_erattr0, 0x0);
out_be32(&ifc->cm_erattr1, 0x0);
ifc_out32(IFC_CM_EVTER_INTR_EN_CSERIREN, &ifc->cm_evter_intr_en);
ifc_out32(0x0, &ifc->cm_erattr0);
ifc_out32(0x0, &ifc->cm_erattr1);
return 0;
}
@ -127,9 +127,9 @@ static u32 check_nand_stat(struct fsl_ifc_ctrl *ctrl)
spin_lock_irqsave(&nand_irq_lock, flags);
stat = in_be32(&ifc->ifc_nand.nand_evter_stat);
stat = ifc_in32(&ifc->ifc_nand.nand_evter_stat);
if (stat) {
out_be32(&ifc->ifc_nand.nand_evter_stat, stat);
ifc_out32(stat, &ifc->ifc_nand.nand_evter_stat);
ctrl->nand_stat = stat;
wake_up(&ctrl->nand_wait);
}
@ -161,16 +161,16 @@ static irqreturn_t fsl_ifc_ctrl_irq(int irqno, void *data)
irqreturn_t ret = IRQ_NONE;
/* read for chip select error */
cs_err = in_be32(&ifc->cm_evter_stat);
cs_err = ifc_in32(&ifc->cm_evter_stat);
if (cs_err) {
dev_err(ctrl->dev, "transaction sent to IFC is not mapped to"
"any memory bank 0x%08X\n", cs_err);
/* clear the chip select error */
out_be32(&ifc->cm_evter_stat, IFC_CM_EVTER_STAT_CSER);
ifc_out32(IFC_CM_EVTER_STAT_CSER, &ifc->cm_evter_stat);
/* read error attribute registers print the error information */
status = in_be32(&ifc->cm_erattr0);
err_addr = in_be32(&ifc->cm_erattr1);
status = ifc_in32(&ifc->cm_erattr0);
err_addr = ifc_in32(&ifc->cm_erattr1);
if (status & IFC_CM_ERATTR0_ERTYP_READ)
dev_err(ctrl->dev, "Read transaction error"
@ -231,6 +231,23 @@ static int fsl_ifc_ctrl_probe(struct platform_device *dev)
goto err;
}
version = ifc_in32(&fsl_ifc_ctrl_dev->regs->ifc_rev) &
FSL_IFC_VERSION_MASK;
banks = (version == FSL_IFC_VERSION_1_0_0) ? 4 : 8;
dev_info(&dev->dev, "IFC version %d.%d, %d banks\n",
version >> 24, (version >> 16) & 0xf, banks);
fsl_ifc_ctrl_dev->version = version;
fsl_ifc_ctrl_dev->banks = banks;
if (of_property_read_bool(dev->dev.of_node, "little-endian")) {
fsl_ifc_ctrl_dev->little_endian = true;
dev_dbg(&dev->dev, "IFC REGISTERS are LITTLE endian\n");
} else {
fsl_ifc_ctrl_dev->little_endian = false;
dev_dbg(&dev->dev, "IFC REGISTERS are BIG endian\n");
}
version = ioread32be(&fsl_ifc_ctrl_dev->regs->ifc_rev) &
FSL_IFC_VERSION_MASK;
banks = (version == FSL_IFC_VERSION_1_0_0) ? 4 : 8;

256
drivers/mtd/nand/fsl_ifc_nand.c
View File

@ -238,8 +238,8 @@ static void set_addr(struct mtd_info *mtd, int column, int page_addr, int oob)
ifc_nand_ctrl->page = page_addr;
/* Program ROW0/COL0 */
iowrite32be(page_addr, &ifc->ifc_nand.row0);
iowrite32be((oob ? IFC_NAND_COL_MS : 0) | column, &ifc->ifc_nand.col0);
ifc_out32(page_addr, &ifc->ifc_nand.row0);
ifc_out32((oob ? IFC_NAND_COL_MS : 0) | column, &ifc->ifc_nand.col0);
buf_num = page_addr & priv->bufnum_mask;
@ -301,19 +301,19 @@ static void fsl_ifc_run_command(struct mtd_info *mtd)
int i;
/* set the chip select for NAND Transaction */
iowrite32be(priv->bank << IFC_NAND_CSEL_SHIFT,
&ifc->ifc_nand.nand_csel);
ifc_out32(priv->bank << IFC_NAND_CSEL_SHIFT,
&ifc->ifc_nand.nand_csel);
dev_vdbg(priv->dev,
"%s: fir0=%08x fcr0=%08x\n",
__func__,
ioread32be(&ifc->ifc_nand.nand_fir0),
ioread32be(&ifc->ifc_nand.nand_fcr0));
ifc_in32(&ifc->ifc_nand.nand_fir0),
ifc_in32(&ifc->ifc_nand.nand_fcr0));
ctrl->nand_stat = 0;
/* start read/write seq */
iowrite32be(IFC_NAND_SEQ_STRT_FIR_STRT, &ifc->ifc_nand.nandseq_strt);
ifc_out32(IFC_NAND_SEQ_STRT_FIR_STRT, &ifc->ifc_nand.nandseq_strt);
/* wait for command complete flag or timeout */
wait_event_timeout(ctrl->nand_wait, ctrl->nand_stat,
@ -336,7 +336,7 @@ static void fsl_ifc_run_command(struct mtd_info *mtd)
int sector_end = sector + chip->ecc.steps - 1;
for (i = sector / 4; i <= sector_end / 4; i++)
eccstat[i] = ioread32be(&ifc->ifc_nand.nand_eccstat[i]);
eccstat[i] = ifc_in32(&ifc->ifc_nand.nand_eccstat[i]);
for (i = sector; i <= sector_end; i++) {
errors = check_read_ecc(mtd, ctrl, eccstat, i);
@ -376,33 +376,33 @@ static void fsl_ifc_do_read(struct nand_chip *chip,
/* Program FIR/IFC_NAND_FCR0 for Small/Large page */
if (mtd->writesize > 512) {
iowrite32be((IFC_FIR_OP_CW0 << IFC_NAND_FIR0_OP0_SHIFT) |
(IFC_FIR_OP_CA0 << IFC_NAND_FIR0_OP1_SHIFT) |
(IFC_FIR_OP_RA0 << IFC_NAND_FIR0_OP2_SHIFT) |
(IFC_FIR_OP_CMD1 << IFC_NAND_FIR0_OP3_SHIFT) |
(IFC_FIR_OP_RBCD << IFC_NAND_FIR0_OP4_SHIFT),
&ifc->ifc_nand.nand_fir0);
iowrite32be(0x0, &ifc->ifc_nand.nand_fir1);
ifc_out32((IFC_FIR_OP_CW0 << IFC_NAND_FIR0_OP0_SHIFT) |
(IFC_FIR_OP_CA0 << IFC_NAND_FIR0_OP1_SHIFT) |
(IFC_FIR_OP_RA0 << IFC_NAND_FIR0_OP2_SHIFT) |
(IFC_FIR_OP_CMD1 << IFC_NAND_FIR0_OP3_SHIFT) |
(IFC_FIR_OP_RBCD << IFC_NAND_FIR0_OP4_SHIFT),
&ifc->ifc_nand.nand_fir0);
ifc_out32(0x0, &ifc->ifc_nand.nand_fir1);
iowrite32be((NAND_CMD_READ0 << IFC_NAND_FCR0_CMD0_SHIFT) |
(NAND_CMD_READSTART << IFC_NAND_FCR0_CMD1_SHIFT),
&ifc->ifc_nand.nand_fcr0);
ifc_out32((NAND_CMD_READ0 << IFC_NAND_FCR0_CMD0_SHIFT) |
(NAND_CMD_READSTART << IFC_NAND_FCR0_CMD1_SHIFT),
&ifc->ifc_nand.nand_fcr0);
} else {
iowrite32be((IFC_FIR_OP_CW0 << IFC_NAND_FIR0_OP0_SHIFT) |
(IFC_FIR_OP_CA0 << IFC_NAND_FIR0_OP1_SHIFT) |
(IFC_FIR_OP_RA0 << IFC_NAND_FIR0_OP2_SHIFT) |
(IFC_FIR_OP_RBCD << IFC_NAND_FIR0_OP3_SHIFT),
&ifc->ifc_nand.nand_fir0);
iowrite32be(0x0, &ifc->ifc_nand.nand_fir1);
ifc_out32((IFC_FIR_OP_CW0 << IFC_NAND_FIR0_OP0_SHIFT) |
(IFC_FIR_OP_CA0 << IFC_NAND_FIR0_OP1_SHIFT) |
(IFC_FIR_OP_RA0 << IFC_NAND_FIR0_OP2_SHIFT) |
(IFC_FIR_OP_RBCD << IFC_NAND_FIR0_OP3_SHIFT),
&ifc->ifc_nand.nand_fir0);
ifc_out32(0x0, &ifc->ifc_nand.nand_fir1);
if (oob)
iowrite32be(NAND_CMD_READOOB <<
IFC_NAND_FCR0_CMD0_SHIFT,
&ifc->ifc_nand.nand_fcr0);
ifc_out32(NAND_CMD_READOOB <<
IFC_NAND_FCR0_CMD0_SHIFT,
&ifc->ifc_nand.nand_fcr0);
else
iowrite32be(NAND_CMD_READ0 <<
IFC_NAND_FCR0_CMD0_SHIFT,
&ifc->ifc_nand.nand_fcr0);
ifc_out32(NAND_CMD_READ0 <<
IFC_NAND_FCR0_CMD0_SHIFT,
&ifc->ifc_nand.nand_fcr0);
}
}
@ -422,7 +422,7 @@ static void fsl_ifc_cmdfunc(struct mtd_info *mtd, unsigned int command,
switch (command) {
/* READ0 read the entire buffer to use hardware ECC. */
case NAND_CMD_READ0:
iowrite32be(0, &ifc->ifc_nand.nand_fbcr);
ifc_out32(0, &ifc->ifc_nand.nand_fbcr);
set_addr(mtd, 0, page_addr, 0);
ifc_nand_ctrl->read_bytes = mtd->writesize + mtd->oobsize;
@ -437,7 +437,7 @@ static void fsl_ifc_cmdfunc(struct mtd_info *mtd, unsigned int command,
/* READOOB reads only the OOB because no ECC is performed. */
case NAND_CMD_READOOB:
iowrite32be(mtd->oobsize - column, &ifc->ifc_nand.nand_fbcr);
ifc_out32(mtd->oobsize - column, &ifc->ifc_nand.nand_fbcr);
set_addr(mtd, column, page_addr, 1);
ifc_nand_ctrl->read_bytes = mtd->writesize + mtd->oobsize;
@ -453,19 +453,19 @@ static void fsl_ifc_cmdfunc(struct mtd_info *mtd, unsigned int command,
if (command == NAND_CMD_PARAM)
timing = IFC_FIR_OP_RBCD;
iowrite32be((IFC_FIR_OP_CW0 << IFC_NAND_FIR0_OP0_SHIFT) |
(IFC_FIR_OP_UA << IFC_NAND_FIR0_OP1_SHIFT) |
(timing << IFC_NAND_FIR0_OP2_SHIFT),
&ifc->ifc_nand.nand_fir0);
iowrite32be(command << IFC_NAND_FCR0_CMD0_SHIFT,
&ifc->ifc_nand.nand_fcr0);
iowrite32be(column, &ifc->ifc_nand.row3);
ifc_out32((IFC_FIR_OP_CW0 << IFC_NAND_FIR0_OP0_SHIFT) |
(IFC_FIR_OP_UA << IFC_NAND_FIR0_OP1_SHIFT) |
(timing << IFC_NAND_FIR0_OP2_SHIFT),
&ifc->ifc_nand.nand_fir0);
ifc_out32(command << IFC_NAND_FCR0_CMD0_SHIFT,
&ifc->ifc_nand.nand_fcr0);
ifc_out32(column, &ifc->ifc_nand.row3);
/*
* although currently it's 8 bytes for READID, we always read
* the maximum 256 bytes(for PARAM)
*/
iowrite32be(256, &ifc->ifc_nand.nand_fbcr);
ifc_out32(256, &ifc->ifc_nand.nand_fbcr);
ifc_nand_ctrl->read_bytes = 256;
set_addr(mtd, 0, 0, 0);
@ -480,16 +480,16 @@ static void fsl_ifc_cmdfunc(struct mtd_info *mtd, unsigned int command,
/* ERASE2 uses the block and page address from ERASE1 */
case NAND_CMD_ERASE2:
iowrite32be((IFC_FIR_OP_CW0 << IFC_NAND_FIR0_OP0_SHIFT) |
(IFC_FIR_OP_RA0 << IFC_NAND_FIR0_OP1_SHIFT) |
(IFC_FIR_OP_CMD1 << IFC_NAND_FIR0_OP2_SHIFT),
&ifc->ifc_nand.nand_fir0);
ifc_out32((IFC_FIR_OP_CW0 << IFC_NAND_FIR0_OP0_SHIFT) |
(IFC_FIR_OP_RA0 << IFC_NAND_FIR0_OP1_SHIFT) |
(IFC_FIR_OP_CMD1 << IFC_NAND_FIR0_OP2_SHIFT),
&ifc->ifc_nand.nand_fir0);
iowrite32be((NAND_CMD_ERASE1 << IFC_NAND_FCR0_CMD0_SHIFT) |
(NAND_CMD_ERASE2 << IFC_NAND_FCR0_CMD1_SHIFT),
&ifc->ifc_nand.nand_fcr0);
ifc_out32((NAND_CMD_ERASE1 << IFC_NAND_FCR0_CMD0_SHIFT) |
(NAND_CMD_ERASE2 << IFC_NAND_FCR0_CMD1_SHIFT),
&ifc->ifc_nand.nand_fcr0);
iowrite32be(0, &ifc->ifc_nand.nand_fbcr);
ifc_out32(0, &ifc->ifc_nand.nand_fbcr);
ifc_nand_ctrl->read_bytes = 0;
fsl_ifc_run_command(mtd);
return;
@ -506,19 +506,18 @@ static void fsl_ifc_cmdfunc(struct mtd_info *mtd, unsigned int command,
(NAND_CMD_STATUS << IFC_NAND_FCR0_CMD1_SHIFT) |
(NAND_CMD_PAGEPROG << IFC_NAND_FCR0_CMD2_SHIFT);
iowrite32be(
(IFC_FIR_OP_CW0 << IFC_NAND_FIR0_OP0_SHIFT) |
(IFC_FIR_OP_CA0 << IFC_NAND_FIR0_OP1_SHIFT) |
(IFC_FIR_OP_RA0 << IFC_NAND_FIR0_OP2_SHIFT) |
(IFC_FIR_OP_WBCD << IFC_NAND_FIR0_OP3_SHIFT) |
(IFC_FIR_OP_CMD2 << IFC_NAND_FIR0_OP4_SHIFT),
&ifc->ifc_nand.nand_fir0);
iowrite32be(
(IFC_FIR_OP_CW1 << IFC_NAND_FIR1_OP5_SHIFT) |
(IFC_FIR_OP_RDSTAT <<
IFC_NAND_FIR1_OP6_SHIFT) |
(IFC_FIR_OP_NOP << IFC_NAND_FIR1_OP7_SHIFT),
&ifc->ifc_nand.nand_fir1);
ifc_out32(
(IFC_FIR_OP_CW0 << IFC_NAND_FIR0_OP0_SHIFT) |
(IFC_FIR_OP_CA0 << IFC_NAND_FIR0_OP1_SHIFT) |
(IFC_FIR_OP_RA0 << IFC_NAND_FIR0_OP2_SHIFT) |
(IFC_FIR_OP_WBCD << IFC_NAND_FIR0_OP3_SHIFT) |
(IFC_FIR_OP_CMD2 << IFC_NAND_FIR0_OP4_SHIFT),
&ifc->ifc_nand.nand_fir0);
ifc_out32(
(IFC_FIR_OP_CW1 << IFC_NAND_FIR1_OP5_SHIFT) |
(IFC_FIR_OP_RDSTAT << IFC_NAND_FIR1_OP6_SHIFT) |
(IFC_FIR_OP_NOP << IFC_NAND_FIR1_OP7_SHIFT),
&ifc->ifc_nand.nand_fir1);
} else {
nand_fcr0 = ((NAND_CMD_PAGEPROG <<
IFC_NAND_FCR0_CMD1_SHIFT) |
@ -527,20 +526,19 @@ static void fsl_ifc_cmdfunc(struct mtd_info *mtd, unsigned int command,
(NAND_CMD_STATUS <<
IFC_NAND_FCR0_CMD3_SHIFT));
iowrite32be(
ifc_out32(
(IFC_FIR_OP_CW0 << IFC_NAND_FIR0_OP0_SHIFT) |
(IFC_FIR_OP_CMD2 << IFC_NAND_FIR0_OP1_SHIFT) |
(IFC_FIR_OP_CA0 << IFC_NAND_FIR0_OP2_SHIFT) |
(IFC_FIR_OP_RA0 << IFC_NAND_FIR0_OP3_SHIFT) |
(IFC_FIR_OP_WBCD << IFC_NAND_FIR0_OP4_SHIFT),
&ifc->ifc_nand.nand_fir0);
iowrite32be(
(IFC_FIR_OP_CMD1 << IFC_NAND_FIR1_OP5_SHIFT) |
(IFC_FIR_OP_CW3 << IFC_NAND_FIR1_OP6_SHIFT) |
(IFC_FIR_OP_RDSTAT <<
IFC_NAND_FIR1_OP7_SHIFT) |
(IFC_FIR_OP_NOP << IFC_NAND_FIR1_OP8_SHIFT),
&ifc->ifc_nand.nand_fir1);
ifc_out32(
(IFC_FIR_OP_CMD1 << IFC_NAND_FIR1_OP5_SHIFT) |
(IFC_FIR_OP_CW3 << IFC_NAND_FIR1_OP6_SHIFT) |
(IFC_FIR_OP_RDSTAT << IFC_NAND_FIR1_OP7_SHIFT) |
(IFC_FIR_OP_NOP << IFC_NAND_FIR1_OP8_SHIFT),
&ifc->ifc_nand.nand_fir1);
if (column >= mtd->writesize)
nand_fcr0 |=
@ -555,7 +553,7 @@ static void fsl_ifc_cmdfunc(struct mtd_info *mtd, unsigned int command,
column -= mtd->writesize;
ifc_nand_ctrl->oob = 1;
}
iowrite32be(nand_fcr0, &ifc->ifc_nand.nand_fcr0);
ifc_out32(nand_fcr0, &ifc->ifc_nand.nand_fcr0);
set_addr(mtd, column, page_addr, ifc_nand_ctrl->oob);
return;
}
@ -563,24 +561,26 @@ static void fsl_ifc_cmdfunc(struct mtd_info *mtd, unsigned int command,
/* PAGEPROG reuses all of the setup from SEQIN and adds the length */
case NAND_CMD_PAGEPROG: {
if (ifc_nand_ctrl->oob) {
iowrite32be(ifc_nand_ctrl->index -
ifc_nand_ctrl->column,
&ifc->ifc_nand.nand_fbcr);
ifc_out32(ifc_nand_ctrl->index -
ifc_nand_ctrl->column,
&ifc->ifc_nand.nand_fbcr);
} else {
iowrite32be(0, &ifc->ifc_nand.nand_fbcr);
ifc_out32(0, &ifc->ifc_nand.nand_fbcr);
}
fsl_ifc_run_command(mtd);
return;
}
case NAND_CMD_STATUS:
iowrite32be((IFC_FIR_OP_CW0 << IFC_NAND_FIR0_OP0_SHIFT) |
(IFC_FIR_OP_RB << IFC_NAND_FIR0_OP1_SHIFT),
&ifc->ifc_nand.nand_fir0);
iowrite32be(NAND_CMD_STATUS << IFC_NAND_FCR0_CMD0_SHIFT,
&ifc->ifc_nand.nand_fcr0);
iowrite32be(1, &ifc->ifc_nand.nand_fbcr);
case NAND_CMD_STATUS: {
void __iomem *addr;
ifc_out32((IFC_FIR_OP_CW0 << IFC_NAND_FIR0_OP0_SHIFT) |
(IFC_FIR_OP_RB << IFC_NAND_FIR0_OP1_SHIFT),
&ifc->ifc_nand.nand_fir0);
ifc_out32(NAND_CMD_STATUS << IFC_NAND_FCR0_CMD0_SHIFT,
&ifc->ifc_nand.nand_fcr0);
ifc_out32(1, &ifc->ifc_nand.nand_fbcr);
set_addr(mtd, 0, 0, 0);
ifc_nand_ctrl->read_bytes = 1;
@ -590,17 +590,19 @@ static void fsl_ifc_cmdfunc(struct mtd_info *mtd, unsigned int command,
* The chip always seems to report that it is
* write-protected, even when it is not.
*/
addr = ifc_nand_ctrl->addr;
if (chip->options & NAND_BUSWIDTH_16)
setbits16(ifc_nand_ctrl->addr, NAND_STATUS_WP);
ifc_out16(ifc_in16(addr) | (NAND_STATUS_WP), addr);
else
setbits8(ifc_nand_ctrl->addr, NAND_STATUS_WP);
ifc_out8(ifc_in8(addr) | (NAND_STATUS_WP), addr);
return;
}
case NAND_CMD_RESET:
iowrite32be(IFC_FIR_OP_CW0 << IFC_NAND_FIR0_OP0_SHIFT,
&ifc->ifc_nand.nand_fir0);
iowrite32be(NAND_CMD_RESET << IFC_NAND_FCR0_CMD0_SHIFT,
&ifc->ifc_nand.nand_fcr0);
ifc_out32(IFC_FIR_OP_CW0 << IFC_NAND_FIR0_OP0_SHIFT,
&ifc->ifc_nand.nand_fir0);
ifc_out32(NAND_CMD_RESET << IFC_NAND_FCR0_CMD0_SHIFT,
&ifc->ifc_nand.nand_fcr0);
fsl_ifc_run_command(mtd);
return;
@ -658,7 +660,7 @@ static uint8_t fsl_ifc_read_byte(struct mtd_info *mtd)
*/
if (ifc_nand_ctrl->index < ifc_nand_ctrl->read_bytes) {
offset = ifc_nand_ctrl->index++;
return in_8(ifc_nand_ctrl->addr + offset);
return ifc_in8(ifc_nand_ctrl->addr + offset);
}
dev_err(priv->dev, "%s: beyond end of buffer\n", __func__);
@ -680,7 +682,7 @@ static uint8_t fsl_ifc_read_byte16(struct mtd_info *mtd)
* next byte.
*/
if (ifc_nand_ctrl->index < ifc_nand_ctrl->read_bytes) {
data = in_be16(ifc_nand_ctrl->addr + ifc_nand_ctrl->index);
data = ifc_in16(ifc_nand_ctrl->addr + ifc_nand_ctrl->index);
ifc_nand_ctrl->index += 2;
return (uint8_t) data;
}
@ -726,18 +728,18 @@ static int fsl_ifc_wait(struct mtd_info *mtd, struct nand_chip *chip)
u32 nand_fsr;
/* Use READ_STATUS command, but wait for the device to be ready */
iowrite32be((IFC_FIR_OP_CW0 << IFC_NAND_FIR0_OP0_SHIFT) |
(IFC_FIR_OP_RDSTAT << IFC_NAND_FIR0_OP1_SHIFT),
&ifc->ifc_nand.nand_fir0);
iowrite32be(NAND_CMD_STATUS << IFC_NAND_FCR0_CMD0_SHIFT,
&ifc->ifc_nand.nand_fcr0);
iowrite32be(1, &ifc->ifc_nand.nand_fbcr);
ifc_out32((IFC_FIR_OP_CW0 << IFC_NAND_FIR0_OP0_SHIFT) |
(IFC_FIR_OP_RDSTAT << IFC_NAND_FIR0_OP1_SHIFT),
&ifc->ifc_nand.nand_fir0);
ifc_out32(NAND_CMD_STATUS << IFC_NAND_FCR0_CMD0_SHIFT,
&ifc->ifc_nand.nand_fcr0);
ifc_out32(1, &ifc->ifc_nand.nand_fbcr);
set_addr(mtd, 0, 0, 0);
ifc_nand_ctrl->read_bytes = 1;
fsl_ifc_run_command(mtd);
nand_fsr = ioread32be(&ifc->ifc_nand.nand_fsr);
nand_fsr = ifc_in32(&ifc->ifc_nand.nand_fsr);
/*
* The chip always seems to report that it is
@ -829,34 +831,34 @@ static void fsl_ifc_sram_init(struct fsl_ifc_mtd *priv)
uint32_t cs = priv->bank;
/* Save CSOR and CSOR_ext */
csor = ioread32be(&ifc->csor_cs[cs].csor);
csor_ext = ioread32be(&ifc->csor_cs[cs].csor_ext);
csor = ifc_in32(&ifc->csor_cs[cs].csor);
csor_ext = ifc_in32(&ifc->csor_cs[cs].csor_ext);
/* chage PageSize 8K and SpareSize 1K*/
csor_8k = (csor & ~(CSOR_NAND_PGS_MASK)) | 0x0018C000;
iowrite32be(csor_8k, &ifc->csor_cs[cs].csor);
iowrite32be(0x0000400, &ifc->csor_cs[cs].csor_ext);
ifc_out32(csor_8k, &ifc->csor_cs[cs].csor);
ifc_out32(0x0000400, &ifc->csor_cs[cs].csor_ext);
/* READID */
iowrite32be((IFC_FIR_OP_CW0 << IFC_NAND_FIR0_OP0_SHIFT) |
(IFC_FIR_OP_UA << IFC_NAND_FIR0_OP1_SHIFT) |
(IFC_FIR_OP_RB << IFC_NAND_FIR0_OP2_SHIFT),
&ifc->ifc_nand.nand_fir0);
iowrite32be(NAND_CMD_READID << IFC_NAND_FCR0_CMD0_SHIFT,
&ifc->ifc_nand.nand_fcr0);
iowrite32be(0x0, &ifc->ifc_nand.row3);
ifc_out32((IFC_FIR_OP_CW0 << IFC_NAND_FIR0_OP0_SHIFT) |
(IFC_FIR_OP_UA << IFC_NAND_FIR0_OP1_SHIFT) |
(IFC_FIR_OP_RB << IFC_NAND_FIR0_OP2_SHIFT),
&ifc->ifc_nand.nand_fir0);
ifc_out32(NAND_CMD_READID << IFC_NAND_FCR0_CMD0_SHIFT,
&ifc->ifc_nand.nand_fcr0);
ifc_out32(0x0, &ifc->ifc_nand.row3);
iowrite32be(0x0, &ifc->ifc_nand.nand_fbcr);
ifc_out32(0x0, &ifc->ifc_nand.nand_fbcr);
/* Program ROW0/COL0 */
iowrite32be(0x0, &ifc->ifc_nand.row0);
iowrite32be(0x0, &ifc->ifc_nand.col0);
ifc_out32(0x0, &ifc->ifc_nand.row0);
ifc_out32(0x0, &ifc->ifc_nand.col0);
/* set the chip select for NAND Transaction */
iowrite32be(cs << IFC_NAND_CSEL_SHIFT, &ifc->ifc_nand.nand_csel);
ifc_out32(cs << IFC_NAND_CSEL_SHIFT, &ifc->ifc_nand.nand_csel);
/* start read seq */
iowrite32be(IFC_NAND_SEQ_STRT_FIR_STRT, &ifc->ifc_nand.nandseq_strt);
ifc_out32(IFC_NAND_SEQ_STRT_FIR_STRT, &ifc->ifc_nand.nandseq_strt);
/* wait for command complete flag or timeout */
wait_event_timeout(ctrl->nand_wait, ctrl->nand_stat,
@ -866,8 +868,8 @@ static void fsl_ifc_sram_init(struct fsl_ifc_mtd *priv)
printk(KERN_ERR "fsl-ifc: Failed to Initialise SRAM\n");
/* Restore CSOR and CSOR_ext */
iowrite32be(csor, &ifc->csor_cs[cs].csor);
iowrite32be(csor_ext, &ifc->csor_cs[cs].csor_ext);
ifc_out32(csor, &ifc->csor_cs[cs].csor);
ifc_out32(csor_ext, &ifc->csor_cs[cs].csor_ext);
}
static int fsl_ifc_chip_init(struct fsl_ifc_mtd *priv)
@ -884,7 +886,7 @@ static int fsl_ifc_chip_init(struct fsl_ifc_mtd *priv)
/* fill in nand_chip structure */
/* set up function call table */
if ((ioread32be(&ifc->cspr_cs[priv->bank].cspr)) & CSPR_PORT_SIZE_16)
if ((ifc_in32(&ifc->cspr_cs[priv->bank].cspr)) & CSPR_PORT_SIZE_16)
chip->read_byte = fsl_ifc_read_byte16;
else
chip->read_byte = fsl_ifc_read_byte;
@ -898,13 +900,13 @@ static int fsl_ifc_chip_init(struct fsl_ifc_mtd *priv)
chip->bbt_td = &bbt_main_descr;
chip->bbt_md = &bbt_mirror_descr;
iowrite32be(0x0, &ifc->ifc_nand.ncfgr);
ifc_out32(0x0, &ifc->ifc_nand.ncfgr);
/* set up nand options */
chip->bbt_options = NAND_BBT_USE_FLASH;
chip->options = NAND_NO_SUBPAGE_WRITE;
if (ioread32be(&ifc->cspr_cs[priv->bank].cspr) & CSPR_PORT_SIZE_16) {
if (ifc_in32(&ifc->cspr_cs[priv->bank].cspr) & CSPR_PORT_SIZE_16) {
chip->read_byte = fsl_ifc_read_byte16;
chip->options |= NAND_BUSWIDTH_16;
} else {
@ -917,7 +919,7 @@ static int fsl_ifc_chip_init(struct fsl_ifc_mtd *priv)
chip->ecc.read_page = fsl_ifc_read_page;
chip->ecc.write_page = fsl_ifc_write_page;
csor = ioread32be(&ifc->csor_cs[priv->bank].csor);
csor = ifc_in32(&ifc->csor_cs[priv->bank].csor);
/* Hardware generates ECC per 512 Bytes */
chip->ecc.size = 512;
@ -1006,7 +1008,7 @@ static int fsl_ifc_chip_remove(struct fsl_ifc_mtd *priv)
static int match_bank(struct fsl_ifc_regs __iomem *ifc, int bank,
phys_addr_t addr)
{
u32 cspr = ioread32be(&ifc->cspr_cs[bank].cspr);
u32 cspr = ifc_in32(&ifc->cspr_cs[bank].cspr);
if (!(cspr & CSPR_V))
return 0;
@ -1092,16 +1094,16 @@ static int fsl_ifc_nand_probe(struct platform_device *dev)
dev_set_drvdata(priv->dev, priv);
iowrite32be(IFC_NAND_EVTER_EN_OPC_EN |
IFC_NAND_EVTER_EN_FTOER_EN |
IFC_NAND_EVTER_EN_WPER_EN,
&ifc->ifc_nand.nand_evter_en);
ifc_out32(IFC_NAND_EVTER_EN_OPC_EN |
IFC_NAND_EVTER_EN_FTOER_EN |
IFC_NAND_EVTER_EN_WPER_EN,
&ifc->ifc_nand.nand_evter_en);
/* enable NAND Machine Interrupts */
iowrite32be(IFC_NAND_EVTER_INTR_OPCIR_EN |
IFC_NAND_EVTER_INTR_FTOERIR_EN |
IFC_NAND_EVTER_INTR_WPERIR_EN,
&ifc->ifc_nand.nand_evter_intr_en);
ifc_out32(IFC_NAND_EVTER_INTR_OPCIR_EN |
IFC_NAND_EVTER_INTR_FTOERIR_EN |
IFC_NAND_EVTER_INTR_WPERIR_EN,
&ifc->ifc_nand.nand_evter_intr_en);
priv->mtd.name = kasprintf(GFP_KERNEL, "%llx.flash", (u64)res.start);
if (!priv->mtd.name) {
ret = -ENOMEM;

50
include/linux/fsl_ifc.h
View File

@ -841,9 +841,59 @@ struct fsl_ifc_ctrl {
u32 nand_stat;
wait_queue_head_t nand_wait;
bool little_endian;
};
extern struct fsl_ifc_ctrl *fsl_ifc_ctrl_dev;
static inline u32 ifc_in32(void __iomem *addr)
{
u32 val;
if (fsl_ifc_ctrl_dev->little_endian)
val = ioread32(addr);
else
val = ioread32be(addr);
return val;
}
static inline u16 ifc_in16(void __iomem *addr)
{
u16 val;
if (fsl_ifc_ctrl_dev->little_endian)
val = ioread16(addr);
else
val = ioread16be(addr);
return val;
}
static inline u8 ifc_in8(void __iomem *addr)
{
return ioread8(addr);
}
static inline void ifc_out32(u32 val, void __iomem *addr)
{
if (fsl_ifc_ctrl_dev->little_endian)
iowrite32(val, addr);
else
iowrite32be(val, addr);
}
static inline void ifc_out16(u16 val, void __iomem *addr)
{
if (fsl_ifc_ctrl_dev->little_endian)
iowrite16(val, addr);
else
iowrite16be(val, addr);
}
static inline void ifc_out8(u8 val, void __iomem *addr)
{
iowrite8(val, addr);
}
#endif /* __ASM_FSL_IFC_H */