[PATCH 3/3] mtd/ifc: Segregate IFC fcm and runtime registers
Raghav Dogra
raghav at freescale.com
Wed Dec 16 02:42:09 PST 2015
IFC has two set of registers viz FCM (Flash control machine)
aka global and run time registers. These set are defined in two
memory map PAGES. Upto IFC 1.4 PAGE size is 4 KB and from IFC2.0
PAGE size is 64KB
Signed-off-by: Jaiprakash Singh <b44839 at freescale.com>
Signed-off-by: Raghav Dogra <raghav at freescale.com>
---
drivers/memory/fsl_ifc.c | 37 ++++++++++-----------
drivers/mtd/nand/fsl_ifc_nand.c | 72 ++++++++++++++++++++++-------------------
include/linux/fsl_ifc.h | 45 +++++++++++++++++---------
3 files changed, 88 insertions(+), 66 deletions(-)
diff --git a/drivers/memory/fsl_ifc.c b/drivers/memory/fsl_ifc.c
index 903c0a5..df17ead 100644
--- a/drivers/memory/fsl_ifc.c
+++ b/drivers/memory/fsl_ifc.c
@@ -60,11 +60,11 @@ int fsl_ifc_find(phys_addr_t addr_base)
{
int i = 0;
- if (!fsl_ifc_ctrl_dev || !fsl_ifc_ctrl_dev->regs)
+ if (!fsl_ifc_ctrl_dev || !fsl_ifc_ctrl_dev->gregs)
return -ENODEV;
for (i = 0; i < fsl_ifc_ctrl_dev->banks; i++) {
- u32 cspr = ifc_in32(&fsl_ifc_ctrl_dev->regs->cspr_cs[i].cspr);
+ u32 cspr = ifc_in32(&fsl_ifc_ctrl_dev->gregs->cspr_cs[i].cspr);
if (cspr & CSPR_V && (cspr & CSPR_BA) ==
convert_ifc_address(addr_base))
return i;
@@ -76,7 +76,7 @@ EXPORT_SYMBOL(fsl_ifc_find);
static int fsl_ifc_ctrl_init(struct fsl_ifc_ctrl *ctrl)
{
- struct fsl_ifc_regs __iomem *ifc = ctrl->regs;
+ struct fsl_ifc_fcm __iomem *ifc = ctrl->gregs;
/*
* Clear all the common status and event registers
@@ -105,7 +105,7 @@ static int fsl_ifc_ctrl_remove(struct platform_device *dev)
irq_dispose_mapping(ctrl->nand_irq);
irq_dispose_mapping(ctrl->irq);
- iounmap(ctrl->regs);
+ iounmap(ctrl->gregs);
dev_set_drvdata(&dev->dev, NULL);
kfree(ctrl);
@@ -123,7 +123,7 @@ static DEFINE_SPINLOCK(nand_irq_lock);
static u32 check_nand_stat(struct fsl_ifc_ctrl *ctrl)
{
- struct fsl_ifc_regs __iomem *ifc = ctrl->regs;
+ struct fsl_ifc_runtime __iomem *ifc = ctrl->rregs;
unsigned long flags;
u32 stat;
@@ -158,7 +158,7 @@ static irqreturn_t fsl_ifc_nand_irq(int irqno, void *data)
static irqreturn_t fsl_ifc_ctrl_irq(int irqno, void *data)
{
struct fsl_ifc_ctrl *ctrl = data;
- struct fsl_ifc_regs __iomem *ifc = ctrl->regs;
+ struct fsl_ifc_fcm __iomem *ifc = ctrl->gregs;
u32 err_axiid, err_srcid, status, cs_err, err_addr;
irqreturn_t ret = IRQ_NONE;
@@ -216,6 +216,7 @@ static int fsl_ifc_ctrl_probe(struct platform_device *dev)
{
int ret = 0;
int version, banks;
+ void __iomem *addr;
dev_info(&dev->dev, "Freescale Integrated Flash Controller\n");
@@ -226,22 +227,13 @@ static int fsl_ifc_ctrl_probe(struct platform_device *dev)
dev_set_drvdata(&dev->dev, fsl_ifc_ctrl_dev);
/* IOMAP the entire IFC region */
- fsl_ifc_ctrl_dev->regs = of_iomap(dev->dev.of_node, 0);
- if (!fsl_ifc_ctrl_dev->regs) {
+ fsl_ifc_ctrl_dev->gregs = of_iomap(dev->dev.of_node, 0);
+ if (!fsl_ifc_ctrl_dev->gregs) {
dev_err(&dev->dev, "failed to get memory region\n");
ret = -ENODEV;
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");
@@ -250,8 +242,9 @@ static int fsl_ifc_ctrl_probe(struct platform_device *dev)
dev_dbg(&dev->dev, "IFC REGISTERS are BIG endian\n");
}
- version = ioread32be(&fsl_ifc_ctrl_dev->regs->ifc_rev) &
+ version = ifc_in32(&fsl_ifc_ctrl_dev->gregs->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);
@@ -259,6 +252,14 @@ static int fsl_ifc_ctrl_probe(struct platform_device *dev)
fsl_ifc_ctrl_dev->version = version;
fsl_ifc_ctrl_dev->banks = banks;
+ addr = fsl_ifc_ctrl_dev->gregs;
+ if (version >= FSL_IFC_VERSION_2_0_0)
+ fsl_ifc_ctrl_dev->rregs =
+ (struct fsl_ifc_runtime *)(addr + PGOFFSET_64K);
+ else
+ fsl_ifc_ctrl_dev->rregs =
+ (struct fsl_ifc_runtime *)(addr + PGOFFSET_4K);
+
/* get the Controller level irq */
fsl_ifc_ctrl_dev->irq = irq_of_parse_and_map(dev->dev.of_node, 0);
if (fsl_ifc_ctrl_dev->irq == 0) {
diff --git a/drivers/mtd/nand/fsl_ifc_nand.c b/drivers/mtd/nand/fsl_ifc_nand.c
index a4e27e8..ca36b35 100644
--- a/drivers/mtd/nand/fsl_ifc_nand.c
+++ b/drivers/mtd/nand/fsl_ifc_nand.c
@@ -233,7 +233,7 @@ static void set_addr(struct mtd_info *mtd, int column, int page_addr, int oob)
struct nand_chip *chip = mtd->priv;
struct fsl_ifc_mtd *priv = chip->priv;
struct fsl_ifc_ctrl *ctrl = priv->ctrl;
- struct fsl_ifc_regs __iomem *ifc = ctrl->regs;
+ struct fsl_ifc_runtime __iomem *ifc = ctrl->rregs;
int buf_num;
ifc_nand_ctrl->page = page_addr;
@@ -296,7 +296,7 @@ static void fsl_ifc_run_command(struct mtd_info *mtd)
struct fsl_ifc_mtd *priv = chip->priv;
struct fsl_ifc_ctrl *ctrl = priv->ctrl;
struct fsl_ifc_nand_ctrl *nctrl = ifc_nand_ctrl;
- struct fsl_ifc_regs __iomem *ifc = ctrl->regs;
+ struct fsl_ifc_runtime __iomem *ifc = ctrl->rregs;
u32 eccstat[4];
int i;
@@ -372,7 +372,7 @@ static void fsl_ifc_do_read(struct nand_chip *chip,
{
struct fsl_ifc_mtd *priv = chip->priv;
struct fsl_ifc_ctrl *ctrl = priv->ctrl;
- struct fsl_ifc_regs __iomem *ifc = ctrl->regs;
+ struct fsl_ifc_runtime __iomem *ifc = ctrl->rregs;
/* Program FIR/IFC_NAND_FCR0 for Small/Large page */
if (mtd->writesize > 512) {
@@ -412,7 +412,7 @@ static void fsl_ifc_cmdfunc(struct mtd_info *mtd, unsigned int command,
struct nand_chip *chip = mtd->priv;
struct fsl_ifc_mtd *priv = chip->priv;
struct fsl_ifc_ctrl *ctrl = priv->ctrl;
- struct fsl_ifc_regs __iomem *ifc = ctrl->regs;
+ struct fsl_ifc_runtime __iomem *ifc = ctrl->rregs;
/* clear the read buffer */
ifc_nand_ctrl->read_bytes = 0;
@@ -724,7 +724,7 @@ static int fsl_ifc_wait(struct mtd_info *mtd, struct nand_chip *chip)
{
struct fsl_ifc_mtd *priv = chip->priv;
struct fsl_ifc_ctrl *ctrl = priv->ctrl;
- struct fsl_ifc_regs __iomem *ifc = ctrl->regs;
+ struct fsl_ifc_runtime __iomem *ifc = ctrl->rregs;
u32 nand_fsr;
/* Use READ_STATUS command, but wait for the device to be ready */
@@ -826,39 +826,42 @@ static int fsl_ifc_chip_init_tail(struct mtd_info *mtd)
static void fsl_ifc_sram_init(struct fsl_ifc_mtd *priv)
{
struct fsl_ifc_ctrl *ctrl = priv->ctrl;
- struct fsl_ifc_regs __iomem *ifc = ctrl->regs;
+ struct fsl_ifc_runtime __iomem *ifc_runtime = ctrl->rregs;
+ struct fsl_ifc_fcm __iomem *ifc_global = ctrl->gregs;
uint32_t csor = 0, csor_8k = 0, csor_ext = 0;
uint32_t cs = priv->bank;
/* Save CSOR and CSOR_ext */
- csor = ifc_in32(&ifc->csor_cs[cs].csor);
- csor_ext = ifc_in32(&ifc->csor_cs[cs].csor_ext);
+ csor = ifc_in32(&ifc_global->csor_cs[cs].csor);
+ csor_ext = ifc_in32(&ifc_global->csor_cs[cs].csor_ext);
/* chage PageSize 8K and SpareSize 1K*/
csor_8k = (csor & ~(CSOR_NAND_PGS_MASK)) | 0x0018C000;
- ifc_out32(csor_8k, &ifc->csor_cs[cs].csor);
- ifc_out32(0x0000400, &ifc->csor_cs[cs].csor_ext);
+ ifc_out32(csor_8k, &ifc_global->csor_cs[cs].csor);
+ ifc_out32(0x0000400, &ifc_global->csor_cs[cs].csor_ext);
/* READID */
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_FIR_OP_UA << IFC_NAND_FIR0_OP1_SHIFT) |
+ (IFC_FIR_OP_RB << IFC_NAND_FIR0_OP2_SHIFT),
+ &ifc_runtime->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);
+ &ifc_runtime->ifc_nand.nand_fcr0);
+ ifc_out32(0x0, &ifc_runtime->ifc_nand.row3);
- ifc_out32(0x0, &ifc->ifc_nand.nand_fbcr);
+ ifc_out32(0x0, &ifc_runtime->ifc_nand.nand_fbcr);
/* Program ROW0/COL0 */
- ifc_out32(0x0, &ifc->ifc_nand.row0);
- ifc_out32(0x0, &ifc->ifc_nand.col0);
+ ifc_out32(0x0, &ifc_runtime->ifc_nand.row0);
+ ifc_out32(0x0, &ifc_runtime->ifc_nand.col0);
/* set the chip select for NAND Transaction */
- ifc_out32(cs << IFC_NAND_CSEL_SHIFT, &ifc->ifc_nand.nand_csel);
+ ifc_out32(cs << IFC_NAND_CSEL_SHIFT,
+ &ifc_runtime->ifc_nand.nand_csel);
/* start read seq */
- ifc_out32(IFC_NAND_SEQ_STRT_FIR_STRT, &ifc->ifc_nand.nandseq_strt);
+ ifc_out32(IFC_NAND_SEQ_STRT_FIR_STRT,
+ &ifc_runtime->ifc_nand.nandseq_strt);
/* wait for command complete flag or timeout */
wait_event_timeout(ctrl->nand_wait, ctrl->nand_stat,
@@ -868,14 +871,15 @@ 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 */
- ifc_out32(csor, &ifc->csor_cs[cs].csor);
- ifc_out32(csor_ext, &ifc->csor_cs[cs].csor_ext);
+ ifc_out32(csor, &ifc_global->csor_cs[cs].csor);
+ ifc_out32(csor_ext, &ifc_global->csor_cs[cs].csor_ext);
}
static int fsl_ifc_chip_init(struct fsl_ifc_mtd *priv)
{
struct fsl_ifc_ctrl *ctrl = priv->ctrl;
- struct fsl_ifc_regs __iomem *ifc = ctrl->regs;
+ struct fsl_ifc_fcm __iomem *ifc_global = ctrl->gregs;
+ struct fsl_ifc_runtime __iomem *ifc_runtime = ctrl->rregs;
struct nand_chip *chip = &priv->chip;
struct nand_ecclayout *layout;
u32 csor;
@@ -886,7 +890,8 @@ static int fsl_ifc_chip_init(struct fsl_ifc_mtd *priv)
/* fill in nand_chip structure */
/* set up function call table */
- if ((ifc_in32(&ifc->cspr_cs[priv->bank].cspr)) & CSPR_PORT_SIZE_16)
+ if ((ifc_in32(&ifc_global->cspr_cs[priv->bank].cspr))
+ & CSPR_PORT_SIZE_16)
chip->read_byte = fsl_ifc_read_byte16;
else
chip->read_byte = fsl_ifc_read_byte;
@@ -900,13 +905,14 @@ static int fsl_ifc_chip_init(struct fsl_ifc_mtd *priv)
chip->bbt_td = &bbt_main_descr;
chip->bbt_md = &bbt_mirror_descr;
- ifc_out32(0x0, &ifc->ifc_nand.ncfgr);
+ ifc_out32(0x0, &ifc_runtime->ifc_nand.ncfgr);
/* set up nand options */
chip->bbt_options = NAND_BBT_USE_FLASH;
chip->options = NAND_NO_SUBPAGE_WRITE;
- if (ifc_in32(&ifc->cspr_cs[priv->bank].cspr) & CSPR_PORT_SIZE_16) {
+ if (ifc_in32(&ifc_global->cspr_cs[priv->bank].cspr)
+ & CSPR_PORT_SIZE_16) {
chip->read_byte = fsl_ifc_read_byte16;
chip->options |= NAND_BUSWIDTH_16;
} else {
@@ -919,7 +925,7 @@ 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 = ifc_in32(&ifc->csor_cs[priv->bank].csor);
+ csor = ifc_in32(&ifc_global->csor_cs[priv->bank].csor);
/* Hardware generates ECC per 512 Bytes */
chip->ecc.size = 512;
@@ -1005,10 +1011,10 @@ static int fsl_ifc_chip_remove(struct fsl_ifc_mtd *priv)
return 0;
}
-static int match_bank(struct fsl_ifc_regs __iomem *ifc, int bank,
+static int match_bank(struct fsl_ifc_fcm __iomem *ifc_global, int bank,
phys_addr_t addr)
{
- u32 cspr = ifc_in32(&ifc->cspr_cs[bank].cspr);
+ u32 cspr = ifc_in32(&ifc_global->cspr_cs[bank].cspr);
if (!(cspr & CSPR_V))
return 0;
@@ -1022,7 +1028,7 @@ static DEFINE_MUTEX(fsl_ifc_nand_mutex);
static int fsl_ifc_nand_probe(struct platform_device *dev)
{
- struct fsl_ifc_regs __iomem *ifc;
+ struct fsl_ifc_runtime __iomem *ifc;
struct fsl_ifc_mtd *priv;
struct resource res;
static const char *part_probe_types[]
@@ -1033,9 +1039,9 @@ static int fsl_ifc_nand_probe(struct platform_device *dev)
struct mtd_part_parser_data ppdata;
ppdata.of_node = dev->dev.of_node;
- if (!fsl_ifc_ctrl_dev || !fsl_ifc_ctrl_dev->regs)
+ if (!fsl_ifc_ctrl_dev || !fsl_ifc_ctrl_dev->rregs)
return -ENODEV;
- ifc = fsl_ifc_ctrl_dev->regs;
+ ifc = fsl_ifc_ctrl_dev->rregs;
/* get, allocate and map the memory resource */
ret = of_address_to_resource(node, 0, &res);
@@ -1046,7 +1052,7 @@ static int fsl_ifc_nand_probe(struct platform_device *dev)
/* find which chip select it is connected to */
for (bank = 0; bank < fsl_ifc_ctrl_dev->banks; bank++) {
- if (match_bank(ifc, bank, res.start))
+ if (match_bank(fsl_ifc_ctrl_dev->gregs, bank, res.start))
break;
}
diff --git a/include/linux/fsl_ifc.h b/include/linux/fsl_ifc.h
index 0023088..e7b8b01 100644
--- a/include/linux/fsl_ifc.h
+++ b/include/linux/fsl_ifc.h
@@ -39,6 +39,10 @@
#define FSL_IFC_VERSION_MASK 0x0F0F0000
#define FSL_IFC_VERSION_1_0_0 0x01000000
#define FSL_IFC_VERSION_1_1_0 0x01010000
+#define FSL_IFC_VERSION_2_0_0 0x02000000
+
+#define PGOFFSET_64K (64*1024)
+#define PGOFFSET_4K (4*1024)
/*
* CSPR - Chip Select Property Register
@@ -723,20 +727,26 @@ struct fsl_ifc_nand {
__be32 nand_evter_en;
u32 res17[0x2];
__be32 nand_evter_intr_en;
- u32 res18[0x2];
+ __be32 nand_vol_addr_stat;
+ u32 res18;
__be32 nand_erattr0;
__be32 nand_erattr1;
u32 res19[0x10];
__be32 nand_fsr;
- u32 res20;
- __be32 nand_eccstat[4];
- u32 res21[0x20];
+ u32 res20[0x3];
+ __be32 nand_eccstat[6];
+ u32 res21[0x1c];
__be32 nanndcr;
u32 res22[0x2];
__be32 nand_autoboot_trgr;
u32 res23;
__be32 nand_mdr;
- u32 res24[0x5C];
+ u32 res24[0x1C];
+ __be32 nand_dll_lowcfg0;
+ __be32 nand_dll_lowcfg1;
+ u32 res25;
+ __be32 nand_dll_lowstat;
+ u32 res26[0x3c];
};
/*
@@ -771,13 +781,12 @@ struct fsl_ifc_gpcm {
__be32 gpcm_erattr1;
__be32 gpcm_erattr2;
__be32 gpcm_stat;
- u32 res4[0x1F3];
};
/*
* IFC Controller Registers
*/
-struct fsl_ifc_regs {
+struct fsl_ifc_fcm {
__be32 ifc_rev;
u32 res1[0x2];
struct {
@@ -803,21 +812,26 @@ struct fsl_ifc_regs {
} ftim_cs[FSL_IFC_BANK_COUNT];
u32 res9[0x30];
__be32 rb_stat;
- u32 res10[0x2];
+ __be32 rb_map;
+ __be32 wb_map;
__be32 ifc_gcr;
- u32 res11[0x2];
+ u32 res10[0x2];
__be32 cm_evter_stat;
- u32 res12[0x2];
+ u32 res11[0x2];
__be32 cm_evter_en;
- u32 res13[0x2];
+ u32 res12[0x2];
__be32 cm_evter_intr_en;
- u32 res14[0x2];
+ u32 res13[0x2];
__be32 cm_erattr0;
__be32 cm_erattr1;
- u32 res15[0x2];
+ u32 res14[0x2];
__be32 ifc_ccr;
__be32 ifc_csr;
- u32 res16[0x2EB];
+ __be32 ddr_ccr_low;
+};
+
+
+struct fsl_ifc_runtime {
struct fsl_ifc_nand ifc_nand;
struct fsl_ifc_nor ifc_nor;
struct fsl_ifc_gpcm ifc_gpcm;
@@ -831,7 +845,8 @@ extern int fsl_ifc_find(phys_addr_t addr_base);
struct fsl_ifc_ctrl {
/* device info */
struct device *dev;
- struct fsl_ifc_regs __iomem *regs;
+ struct fsl_ifc_fcm __iomem *gregs;
+ struct fsl_ifc_runtime __iomem *rregs;
int irq;
int nand_irq;
spinlock_t lock;
--
1.9.1
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