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path: root/drivers/char/tpm/tpm_nsc.c
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Diffstat (limited to 'drivers/char/tpm/tpm_nsc.c')
-rw-r--r--drivers/char/tpm/tpm_nsc.c165
1 files changed, 95 insertions, 70 deletions
diff --git a/drivers/char/tpm/tpm_nsc.c b/drivers/char/tpm/tpm_nsc.c
index b4127348c06..8d125c974a2 100644
--- a/drivers/char/tpm/tpm_nsc.c
+++ b/drivers/char/tpm/tpm_nsc.c
@@ -19,6 +19,7 @@
*
*/
+#include <linux/platform_device.h>
#include "tpm.h"
/* National definitions */
@@ -111,7 +112,7 @@ static int nsc_wait_for_ready(struct tpm_chip *chip)
}
while (time_before(jiffies, stop));
- dev_info(&chip->pci_dev->dev, "wait for ready failed\n");
+ dev_info(chip->dev, "wait for ready failed\n");
return -EBUSY;
}
@@ -127,12 +128,12 @@ static int tpm_nsc_recv(struct tpm_chip *chip, u8 * buf, size_t count)
return -EIO;
if (wait_for_stat(chip, NSC_STATUS_F0, NSC_STATUS_F0, &data) < 0) {
- dev_err(&chip->pci_dev->dev, "F0 timeout\n");
+ dev_err(chip->dev, "F0 timeout\n");
return -EIO;
}
if ((data =
inb(chip->vendor->base + NSC_DATA)) != NSC_COMMAND_NORMAL) {
- dev_err(&chip->pci_dev->dev, "not in normal mode (0x%x)\n",
+ dev_err(chip->dev, "not in normal mode (0x%x)\n",
data);
return -EIO;
}
@@ -141,7 +142,7 @@ static int tpm_nsc_recv(struct tpm_chip *chip, u8 * buf, size_t count)
for (p = buffer; p < &buffer[count]; p++) {
if (wait_for_stat
(chip, NSC_STATUS_OBF, NSC_STATUS_OBF, &data) < 0) {
- dev_err(&chip->pci_dev->dev,
+ dev_err(chip->dev,
"OBF timeout (while reading data)\n");
return -EIO;
}
@@ -152,11 +153,11 @@ static int tpm_nsc_recv(struct tpm_chip *chip, u8 * buf, size_t count)
if ((data & NSC_STATUS_F0) == 0 &&
(wait_for_stat(chip, NSC_STATUS_F0, NSC_STATUS_F0, &data) < 0)) {
- dev_err(&chip->pci_dev->dev, "F0 not set\n");
+ dev_err(chip->dev, "F0 not set\n");
return -EIO;
}
if ((data = inb(chip->vendor->base + NSC_DATA)) != NSC_COMMAND_EOC) {
- dev_err(&chip->pci_dev->dev,
+ dev_err(chip->dev,
"expected end of command(0x%x)\n", data);
return -EIO;
}
@@ -187,19 +188,19 @@ static int tpm_nsc_send(struct tpm_chip *chip, u8 * buf, size_t count)
return -EIO;
if (wait_for_stat(chip, NSC_STATUS_IBF, 0, &data) < 0) {
- dev_err(&chip->pci_dev->dev, "IBF timeout\n");
+ dev_err(chip->dev, "IBF timeout\n");
return -EIO;
}
outb(NSC_COMMAND_NORMAL, chip->vendor->base + NSC_COMMAND);
if (wait_for_stat(chip, NSC_STATUS_IBR, NSC_STATUS_IBR, &data) < 0) {
- dev_err(&chip->pci_dev->dev, "IBR timeout\n");
+ dev_err(chip->dev, "IBR timeout\n");
return -EIO;
}
for (i = 0; i < count; i++) {
if (wait_for_stat(chip, NSC_STATUS_IBF, 0, &data) < 0) {
- dev_err(&chip->pci_dev->dev,
+ dev_err(chip->dev,
"IBF timeout (while writing data)\n");
return -EIO;
}
@@ -207,7 +208,7 @@ static int tpm_nsc_send(struct tpm_chip *chip, u8 * buf, size_t count)
}
if (wait_for_stat(chip, NSC_STATUS_IBF, 0, &data) < 0) {
- dev_err(&chip->pci_dev->dev, "IBF timeout\n");
+ dev_err(chip->dev, "IBF timeout\n");
return -EIO;
}
outb(NSC_COMMAND_EOC, chip->vendor->base + NSC_COMMAND);
@@ -220,6 +221,11 @@ static void tpm_nsc_cancel(struct tpm_chip *chip)
outb(NSC_COMMAND_CANCEL, chip->vendor->base + NSC_COMMAND);
}
+static u8 tpm_nsc_status(struct tpm_chip *chip)
+{
+ return inb(chip->vendor->base + NSC_STATUS);
+}
+
static struct file_operations nsc_ops = {
.owner = THIS_MODULE,
.llseek = no_llseek,
@@ -239,7 +245,7 @@ static struct attribute * nsc_attrs[] = {
&dev_attr_pcrs.attr,
&dev_attr_caps.attr,
&dev_attr_cancel.attr,
- 0,
+ NULL,
};
static struct attribute_group nsc_attr_grp = { .attrs = nsc_attrs };
@@ -248,6 +254,7 @@ static struct tpm_vendor_specific tpm_nsc = {
.recv = tpm_nsc_recv,
.send = tpm_nsc_send,
.cancel = tpm_nsc_cancel,
+ .status = tpm_nsc_status,
.req_complete_mask = NSC_STATUS_OBF,
.req_complete_val = NSC_STATUS_OBF,
.req_canceled = NSC_STATUS_RDY,
@@ -255,16 +262,32 @@ static struct tpm_vendor_specific tpm_nsc = {
.miscdev = { .fops = &nsc_ops, },
};
-static int __devinit tpm_nsc_init(struct pci_dev *pci_dev,
- const struct pci_device_id *pci_id)
+static struct platform_device *pdev = NULL;
+
+static void __devexit tpm_nsc_remove(struct device *dev)
+{
+ struct tpm_chip *chip = dev_get_drvdata(dev);
+ if ( chip ) {
+ release_region(chip->vendor->base, 2);
+ tpm_remove_hardware(chip->dev);
+ }
+}
+
+static struct device_driver nsc_drv = {
+ .name = "tpm_nsc",
+ .bus = &platform_bus_type,
+ .owner = THIS_MODULE,
+ .suspend = tpm_pm_suspend,
+ .resume = tpm_pm_resume,
+};
+
+static int __init init_nsc(void)
{
int rc = 0;
int lo, hi;
int nscAddrBase = TPM_ADDR;
-
- if (pci_enable_device(pci_dev))
- return -EIO;
+ driver_register(&nsc_drv);
/* select PM channel 1 */
tpm_write_index(nscAddrBase,NSC_LDN_INDEX, 0x12);
@@ -273,37 +296,71 @@ static int __devinit tpm_nsc_init(struct pci_dev *pci_dev,
if (tpm_read_index(TPM_ADDR, NSC_SID_INDEX) != 0xEF) {
nscAddrBase = (tpm_read_index(TPM_SUPERIO_ADDR, 0x2C)<<8)|
(tpm_read_index(TPM_SUPERIO_ADDR, 0x2B)&0xFE);
- if (tpm_read_index(nscAddrBase, NSC_SID_INDEX) != 0xF6) {
- rc = -ENODEV;
- goto out_err;
- }
+ if (tpm_read_index(nscAddrBase, NSC_SID_INDEX) != 0xF6)
+ return -ENODEV;
}
hi = tpm_read_index(nscAddrBase, TPM_NSC_BASE0_HI);
lo = tpm_read_index(nscAddrBase, TPM_NSC_BASE0_LO);
tpm_nsc.base = (hi<<8) | lo;
- dev_dbg(&pci_dev->dev, "NSC TPM detected\n");
- dev_dbg(&pci_dev->dev,
+ /* enable the DPM module */
+ tpm_write_index(nscAddrBase, NSC_LDC_INDEX, 0x01);
+
+ pdev = kmalloc(sizeof(struct platform_device), GFP_KERNEL);
+ if ( !pdev )
+ return -ENOMEM;
+
+ memset(pdev, 0, sizeof(struct platform_device));
+
+ pdev->name = "tpm_nscl0";
+ pdev->id = -1;
+ pdev->num_resources = 0;
+ pdev->dev.release = tpm_nsc_remove;
+ pdev->dev.driver = &nsc_drv;
+
+ if ((rc=platform_device_register(pdev)) < 0) {
+ kfree(pdev);
+ pdev = NULL;
+ return rc;
+ }
+
+ if (request_region(tpm_nsc.base, 2, "tpm_nsc0") == NULL ) {
+ platform_device_unregister(pdev);
+ kfree(pdev);
+ pdev = NULL;
+ return -EBUSY;
+ }
+
+ if ((rc = tpm_register_hardware(&pdev->dev, &tpm_nsc)) < 0) {
+ release_region(tpm_nsc.base, 2);
+ platform_device_unregister(pdev);
+ kfree(pdev);
+ pdev = NULL;
+ return rc;
+ }
+
+ dev_dbg(&pdev->dev, "NSC TPM detected\n");
+ dev_dbg(&pdev->dev,
"NSC LDN 0x%x, SID 0x%x, SRID 0x%x\n",
tpm_read_index(nscAddrBase,0x07), tpm_read_index(nscAddrBase,0x20),
tpm_read_index(nscAddrBase,0x27));
- dev_dbg(&pci_dev->dev,
+ dev_dbg(&pdev->dev,
"NSC SIOCF1 0x%x SIOCF5 0x%x SIOCF6 0x%x SIOCF8 0x%x\n",
tpm_read_index(nscAddrBase,0x21), tpm_read_index(nscAddrBase,0x25),
tpm_read_index(nscAddrBase,0x26), tpm_read_index(nscAddrBase,0x28));
- dev_dbg(&pci_dev->dev, "NSC IO Base0 0x%x\n",
+ dev_dbg(&pdev->dev, "NSC IO Base0 0x%x\n",
(tpm_read_index(nscAddrBase,0x60) << 8) | tpm_read_index(nscAddrBase,0x61));
- dev_dbg(&pci_dev->dev, "NSC IO Base1 0x%x\n",
+ dev_dbg(&pdev->dev, "NSC IO Base1 0x%x\n",
(tpm_read_index(nscAddrBase,0x62) << 8) | tpm_read_index(nscAddrBase,0x63));
- dev_dbg(&pci_dev->dev, "NSC Interrupt number and wakeup 0x%x\n",
+ dev_dbg(&pdev->dev, "NSC Interrupt number and wakeup 0x%x\n",
tpm_read_index(nscAddrBase,0x70));
- dev_dbg(&pci_dev->dev, "NSC IRQ type select 0x%x\n",
+ dev_dbg(&pdev->dev, "NSC IRQ type select 0x%x\n",
tpm_read_index(nscAddrBase,0x71));
- dev_dbg(&pci_dev->dev,
+ dev_dbg(&pdev->dev,
"NSC DMA channel select0 0x%x, select1 0x%x\n",
tpm_read_index(nscAddrBase,0x74), tpm_read_index(nscAddrBase,0x75));
- dev_dbg(&pci_dev->dev,
+ dev_dbg(&pdev->dev,
"NSC Config "
"0x%x 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x\n",
tpm_read_index(nscAddrBase,0xF0), tpm_read_index(nscAddrBase,0xF1),
@@ -312,55 +369,23 @@ static int __devinit tpm_nsc_init(struct pci_dev *pci_dev,
tpm_read_index(nscAddrBase,0xF6), tpm_read_index(nscAddrBase,0xF7),
tpm_read_index(nscAddrBase,0xF8), tpm_read_index(nscAddrBase,0xF9));
- dev_info(&pci_dev->dev,
+ dev_info(&pdev->dev,
"NSC TPM revision %d\n",
tpm_read_index(nscAddrBase, 0x27) & 0x1F);
- /* enable the DPM module */
- tpm_write_index(nscAddrBase, NSC_LDC_INDEX, 0x01);
-
- if ((rc = tpm_register_hardware(pci_dev, &tpm_nsc)) < 0)
- goto out_err;
-
return 0;
-
-out_err:
- pci_disable_device(pci_dev);
- return rc;
-}
-
-static struct pci_device_id tpm_pci_tbl[] __devinitdata = {
- {PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_0)},
- {PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_12)},
- {PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_0)},
- {PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_12)},
- {PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801EB_0)},
- {PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_0)},
- {PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1)},
- {PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH7_0)},
- {PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8111_LPC)},
- {0,}
-};
-
-MODULE_DEVICE_TABLE(pci, tpm_pci_tbl);
-
-static struct pci_driver nsc_pci_driver = {
- .name = "tpm_nsc",
- .id_table = tpm_pci_tbl,
- .probe = tpm_nsc_init,
- .remove = __devexit_p(tpm_remove),
- .suspend = tpm_pm_suspend,
- .resume = tpm_pm_resume,
-};
-
-static int __init init_nsc(void)
-{
- return pci_register_driver(&nsc_pci_driver);
}
static void __exit cleanup_nsc(void)
{
- pci_unregister_driver(&nsc_pci_driver);
+ if (pdev) {
+ tpm_nsc_remove(&pdev->dev);
+ platform_device_unregister(pdev);
+ kfree(pdev);
+ pdev = NULL;
+ }
+
+ driver_unregister(&nsc_drv);
}
module_init(init_nsc);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-21 03:59:40 +0000