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tpm: drop 'base' from struct tpm_vendor_specific 

Dropped the field 'base' from struct tpm_vendor_specific and migrated
it to the private structures of tpm_atmel and tpm_nsc.

Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Reviewed-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
This commit is contained in:
Jarkko Sakkinen 2016-03-23 08:16:09 +02:00
parent d4956524f1
commit ee1779840d
4 changed files with 52 additions and 25 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/char/tpm/tpm.h
View File

@ -132,7 +132,6 @@ struct tpm_chip;
struct tpm_vendor_specific {
void __iomem *iobase; /* ioremapped address */
unsigned long base; /* TPM base address */
int irq;

5
drivers/char/tpm/tpm_atmel.c
View File

@ -141,8 +141,7 @@ static void atml_plat_remove(void)
if (chip) {
tpm_chip_unregister(chip);
if (priv->have_region)
atmel_release_region(chip->vendor.base,
priv->region_size);
atmel_release_region(priv->base, priv->region_size);
atmel_put_base_addr(chip->vendor.iobase);
platform_device_unregister(pdev);
}
@ -191,6 +190,7 @@ static int __init init_atmel(void)
goto err_unreg_dev;
}
priv->base = base;
priv->have_region = have_region;
priv->region_size = region_size;
@ -201,7 +201,6 @@ static int __init init_atmel(void)
}
chip->vendor.iobase = iobase;
chip->vendor.base = base;
chip->vendor.priv = priv;
rc = tpm_chip_register(chip);

11
drivers/char/tpm/tpm_atmel.h
View File

@ -25,8 +25,14 @@
struct tpm_atmel_priv {
int region_size;
int have_region;
unsigned long base;
};
static inline struct tpm_atmel_priv *atmel_get_priv(struct tpm_chip *chip)
{
return chip->vendor.priv;
}
#ifdef CONFIG_PPC64
#include <asm/prom.h>
@ -83,8 +89,9 @@ static void __iomem * atmel_get_base_addr(unsigned long *base, int *region_size)
return ioremap(*base, *region_size);
}
#else
#define atmel_getb(chip, offset) inb(chip->vendor->base + offset)
#define atmel_putb(val, chip, offset) outb(val, chip->vendor->base + offset)
#define atmel_getb(chip, offset) inb(atmel_get_priv(chip)->base + offset)
#define atmel_putb(val, chip, offset) \
outb(val, atmel_get_priv(chip)->base + offset)
#define atmel_request_region request_region
#define atmel_release_region release_region
/* Atmel definitions */

60
drivers/char/tpm/tpm_nsc.c
View File

@ -64,6 +64,16 @@ enum tpm_nsc_cmd_mode {
NSC_COMMAND_EOC = 0x03,
NSC_COMMAND_CANCEL = 0x22
};
struct tpm_nsc_priv {
unsigned long base;
};
static inline struct tpm_nsc_priv *nsc_get_priv(struct tpm_chip *chip)
{
return chip->vendor.priv;
}
/*
* Wait for a certain status to appear
*/
@ -72,7 +82,7 @@ static int wait_for_stat(struct tpm_chip *chip, u8 mask, u8 val, u8 * data)
unsigned long stop;
/* status immediately available check */
*data = inb(chip->vendor.base + NSC_STATUS);
*data = inb(nsc_get_priv(chip)->base + NSC_STATUS);
if ((*data & mask) == val)
return 0;
@ -80,7 +90,7 @@ static int wait_for_stat(struct tpm_chip *chip, u8 mask, u8 val, u8 * data)
stop = jiffies + 10 * HZ;
do {
msleep(TPM_TIMEOUT);
*data = inb(chip->vendor.base + 1);
*data = inb(nsc_get_priv(chip)->base + 1);
if ((*data & mask) == val)
return 0;
}
@ -95,9 +105,9 @@ static int nsc_wait_for_ready(struct tpm_chip *chip)
unsigned long stop;
/* status immediately available check */
status = inb(chip->vendor.base + NSC_STATUS);
status = inb(nsc_get_priv(chip)->base + NSC_STATUS);
if (status & NSC_STATUS_OBF)
status = inb(chip->vendor.base + NSC_DATA);
status = inb(nsc_get_priv(chip)->base + NSC_DATA);
if (status & NSC_STATUS_RDY)
return 0;
@ -105,9 +115,9 @@ static int nsc_wait_for_ready(struct tpm_chip *chip)
stop = jiffies + 100;
do {
msleep(TPM_TIMEOUT);
status = inb(chip->vendor.base + NSC_STATUS);
status = inb(nsc_get_priv(chip)->base + NSC_STATUS);
if (status & NSC_STATUS_OBF)
status = inb(chip->vendor.base + NSC_DATA);
status = inb(nsc_get_priv(chip)->base + NSC_DATA);
if (status & NSC_STATUS_RDY)
return 0;
}
@ -132,8 +142,9 @@ static int tpm_nsc_recv(struct tpm_chip *chip, u8 * buf, size_t count)
dev_err(&chip->dev, "F0 timeout\n");
return -EIO;
}
if ((data =
inb(chip->vendor.base + NSC_DATA)) != NSC_COMMAND_NORMAL) {
data = inb(nsc_get_priv(chip)->base + NSC_DATA);
if (data != NSC_COMMAND_NORMAL) {
dev_err(&chip->dev, "not in normal mode (0x%x)\n",
data);
return -EIO;
@ -149,7 +160,7 @@ static int tpm_nsc_recv(struct tpm_chip *chip, u8 * buf, size_t count)
}
if (data & NSC_STATUS_F0)
break;
*p = inb(chip->vendor.base + NSC_DATA);
*p = inb(nsc_get_priv(chip)->base + NSC_DATA);
}
if ((data & NSC_STATUS_F0) == 0 &&
@ -157,7 +168,9 @@ static int tpm_nsc_recv(struct tpm_chip *chip, u8 * buf, size_t count)
dev_err(&chip->dev, "F0 not set\n");
return -EIO;
}
if ((data = inb(chip->vendor.base + NSC_DATA)) != NSC_COMMAND_EOC) {
data = inb(nsc_get_priv(chip)->base + NSC_DATA);
if (data != NSC_COMMAND_EOC) {
dev_err(&chip->dev,
"expected end of command(0x%x)\n", data);
return -EIO;
@ -183,7 +196,7 @@ static int tpm_nsc_send(struct tpm_chip *chip, u8 * buf, size_t count)
* fix it. Not sure why this is needed, we followed the flow
* chart in the manual to the letter.
*/
outb(NSC_COMMAND_CANCEL, chip->vendor.base + NSC_COMMAND);
outb(NSC_COMMAND_CANCEL, nsc_get_priv(chip)->base + NSC_COMMAND);
if (nsc_wait_for_ready(chip) != 0)
return -EIO;
@ -193,7 +206,7 @@ static int tpm_nsc_send(struct tpm_chip *chip, u8 * buf, size_t count)
return -EIO;
}
outb(NSC_COMMAND_NORMAL, chip->vendor.base + NSC_COMMAND);
outb(NSC_COMMAND_NORMAL, nsc_get_priv(chip)->base + NSC_COMMAND);
if (wait_for_stat(chip, NSC_STATUS_IBR, NSC_STATUS_IBR, &data) < 0) {
dev_err(&chip->dev, "IBR timeout\n");
return -EIO;
@ -205,26 +218,26 @@ static int tpm_nsc_send(struct tpm_chip *chip, u8 * buf, size_t count)
"IBF timeout (while writing data)\n");
return -EIO;
}
outb(buf[i], chip->vendor.base + NSC_DATA);
outb(buf[i], nsc_get_priv(chip)->base + NSC_DATA);
}
if (wait_for_stat(chip, NSC_STATUS_IBF, 0, &data) < 0) {
dev_err(&chip->dev, "IBF timeout\n");
return -EIO;
}
outb(NSC_COMMAND_EOC, chip->vendor.base + NSC_COMMAND);
outb(NSC_COMMAND_EOC, nsc_get_priv(chip)->base + NSC_COMMAND);
return count;
}
static void tpm_nsc_cancel(struct tpm_chip *chip)
{
outb(NSC_COMMAND_CANCEL, chip->vendor.base + NSC_COMMAND);
outb(NSC_COMMAND_CANCEL, nsc_get_priv(chip)->base + NSC_COMMAND);
}
static u8 tpm_nsc_status(struct tpm_chip *chip)
{
return inb(chip->vendor.base + NSC_STATUS);
return inb(nsc_get_priv(chip)->base + NSC_STATUS);
}
static bool tpm_nsc_req_canceled(struct tpm_chip *chip, u8 status)
@ -249,7 +262,7 @@ static void tpm_nsc_remove(struct device *dev)
struct tpm_chip *chip = dev_get_drvdata(dev);
tpm_chip_unregister(chip);
release_region(chip->vendor.base, 2);
release_region(nsc_get_priv(chip)->base, 2);
}
static SIMPLE_DEV_PM_OPS(tpm_nsc_pm, tpm_pm_suspend, tpm_pm_resume);
@ -268,6 +281,7 @@ static int __init init_nsc(void)
int nscAddrBase = TPM_ADDR;
struct tpm_chip *chip;
unsigned long base;
struct tpm_nsc_priv *priv;
/* verify that it is a National part (SID) */
if (tpm_read_index(TPM_ADDR, NSC_SID_INDEX) != 0xEF) {
@ -301,6 +315,14 @@ static int __init init_nsc(void)
if ((rc = platform_device_add(pdev)) < 0)
goto err_put_dev;
priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
if (!priv) {
rc = -ENOMEM;
goto err_del_dev;
}
priv->base = base;
if (request_region(base, 2, "tpm_nsc0") == NULL ) {
rc = -EBUSY;
goto err_del_dev;
@ -312,6 +334,8 @@ static int __init init_nsc(void)
goto err_rel_reg;
}
chip->vendor.priv = priv;
rc = tpm_chip_register(chip);
if (rc)
goto err_rel_reg;
@ -349,8 +373,6 @@ static int __init init_nsc(void)
"NSC TPM revision %d\n",
tpm_read_index(nscAddrBase, 0x27) & 0x1F);
chip->vendor.base = base;
return 0;
err_rel_reg: