*/
#include "tpm.h"
-
-/* Atmel definitions */
-#define TPM_ATML_BASE 0x400
+#include "tpm_atmel.h"
/* write status bits */
-#define ATML_STATUS_ABORT 0x01
-#define ATML_STATUS_LASTBYTE 0x04
-
+enum tpm_atmel_write_status {
+ ATML_STATUS_ABORT = 0x01,
+ ATML_STATUS_LASTBYTE = 0x04
+};
/* read status bits */
-#define ATML_STATUS_BUSY 0x01
-#define ATML_STATUS_DATA_AVAIL 0x02
-#define ATML_STATUS_REWRITE 0x04
-
+enum tpm_atmel_read_status {
+ ATML_STATUS_BUSY = 0x01,
+ ATML_STATUS_DATA_AVAIL = 0x02,
+ ATML_STATUS_REWRITE = 0x04,
+ ATML_STATUS_READY = 0x08
+};
-static int tpm_atml_recv(struct tpm_chip *chip, u8 * buf, size_t count)
+static int tpm_atml_recv(struct tpm_chip *chip, u8 *buf, size_t count)
{
u8 status, *hdr = buf;
u32 size;
return -EIO;
for (i = 0; i < 6; i++) {
- status = inb(chip->vendor->base + 1);
+ status = ioread8(chip->vendor.iobase + 1);
if ((status & ATML_STATUS_DATA_AVAIL) == 0) {
- dev_err(&chip->pci_dev->dev,
- "error reading header\n");
+ dev_err(chip->dev, "error reading header\n");
return -EIO;
}
- *buf++ = inb(chip->vendor->base);
+ *buf++ = ioread8(chip->vendor.iobase);
}
/* size of the data received */
size = be32_to_cpu(*native_size);
if (count < size) {
- dev_err(&chip->pci_dev->dev,
+ dev_err(chip->dev,
"Recv size(%d) less than available space\n", size);
for (; i < size; i++) { /* clear the waiting data anyway */
- status = inb(chip->vendor->base + 1);
+ status = ioread8(chip->vendor.iobase + 1);
if ((status & ATML_STATUS_DATA_AVAIL) == 0) {
- dev_err(&chip->pci_dev->dev,
- "error reading data\n");
+ dev_err(chip->dev, "error reading data\n");
return -EIO;
}
}
/* read all the data available */
for (; i < size; i++) {
- status = inb(chip->vendor->base + 1);
+ status = ioread8(chip->vendor.iobase + 1);
if ((status & ATML_STATUS_DATA_AVAIL) == 0) {
- dev_err(&chip->pci_dev->dev,
- "error reading data\n");
+ dev_err(chip->dev, "error reading data\n");
return -EIO;
}
- *buf++ = inb(chip->vendor->base);
+ *buf++ = ioread8(chip->vendor.iobase);
}
/* make sure data available is gone */
- status = inb(chip->vendor->base + 1);
+ status = ioread8(chip->vendor.iobase + 1);
+
if (status & ATML_STATUS_DATA_AVAIL) {
- dev_err(&chip->pci_dev->dev, "data available is stuck\n");
+ dev_err(chip->dev, "data available is stuck\n");
return -EIO;
}
return size;
}
-static int tpm_atml_send(struct tpm_chip *chip, u8 * buf, size_t count)
+static int tpm_atml_send(struct tpm_chip *chip, u8 *buf, size_t count)
{
int i;
- dev_dbg(&chip->pci_dev->dev, "tpm_atml_send: ");
+ dev_dbg(chip->dev, "tpm_atml_send:\n");
for (i = 0; i < count; i++) {
- dev_dbg(&chip->pci_dev->dev, "0x%x(%d) ", buf[i], buf[i]);
- outb(buf[i], chip->vendor->base);
+ dev_dbg(chip->dev, "%d 0x%x(%d)\n", i, buf[i], buf[i]);
+ iowrite8(buf[i], chip->vendor.iobase);
}
return count;
static void tpm_atml_cancel(struct tpm_chip *chip)
{
- outb(ATML_STATUS_ABORT, chip->vendor->base + 1);
+ iowrite8(ATML_STATUS_ABORT, chip->vendor.iobase + 1);
+}
+
+static u8 tpm_atml_status(struct tpm_chip *chip)
+{
+ return ioread8(chip->vendor.iobase + 1);
}
static struct file_operations atmel_ops = {
.release = tpm_release,
};
-static struct tpm_vendor_specific tpm_atmel = {
+static DEVICE_ATTR(pubek, S_IRUGO, tpm_show_pubek, NULL);
+static DEVICE_ATTR(pcrs, S_IRUGO, tpm_show_pcrs, NULL);
+static DEVICE_ATTR(caps, S_IRUGO, tpm_show_caps, NULL);
+static DEVICE_ATTR(cancel, S_IWUSR |S_IWGRP, NULL, tpm_store_cancel);
+
+static struct attribute* atmel_attrs[] = {
+ &dev_attr_pubek.attr,
+ &dev_attr_pcrs.attr,
+ &dev_attr_caps.attr,
+ &dev_attr_cancel.attr,
+ NULL,
+};
+
+static struct attribute_group atmel_attr_grp = { .attrs = atmel_attrs };
+
+static const struct tpm_vendor_specific tpm_atmel = {
.recv = tpm_atml_recv,
.send = tpm_atml_send,
.cancel = tpm_atml_cancel,
+ .status = tpm_atml_status,
.req_complete_mask = ATML_STATUS_BUSY | ATML_STATUS_DATA_AVAIL,
.req_complete_val = ATML_STATUS_DATA_AVAIL,
- .base = TPM_ATML_BASE,
+ .req_canceled = ATML_STATUS_READY,
+ .attr_group = &atmel_attr_grp,
.miscdev = { .fops = &atmel_ops, },
};
-static int __devinit tpm_atml_init(struct pci_dev *pci_dev,
- const struct pci_device_id *pci_id)
+static struct platform_device *pdev;
+
+static void atml_plat_remove(void)
+{
+ struct tpm_chip *chip = dev_get_drvdata(&pdev->dev);
+
+ if (chip) {
+ if (chip->vendor.have_region)
+ atmel_release_region(chip->vendor.base,
+ chip->vendor.region_size);
+ atmel_put_base_addr(chip->vendor.iobase);
+ tpm_remove_hardware(chip->dev);
+ platform_device_unregister(pdev);
+ }
+}
+
+static struct device_driver atml_drv = {
+ .name = "tpm_atmel",
+ .bus = &platform_bus_type,
+ .owner = THIS_MODULE,
+ .suspend = tpm_pm_suspend,
+ .resume = tpm_pm_resume,
+};
+
+static int __init init_atmel(void)
{
- u8 version[4];
int rc = 0;
+ void __iomem *iobase = NULL;
+ int have_region, region_size;
+ unsigned long base;
+ struct tpm_chip *chip;
- if (pci_enable_device(pci_dev))
- return -EIO;
+ driver_register(&atml_drv);
- if (tpm_lpc_bus_init(pci_dev, TPM_ATML_BASE)) {
+ if ((iobase = atmel_get_base_addr(&base, ®ion_size)) == NULL) {
rc = -ENODEV;
- goto out_err;
+ goto err_unreg_drv;
}
- /* verify that it is an Atmel part */
- if (tpm_read_index(4) != 'A' || tpm_read_index(5) != 'T'
- || tpm_read_index(6) != 'M' || tpm_read_index(7) != 'L') {
- rc = -ENODEV;
- goto out_err;
+ have_region =
+ (atmel_request_region
+ (tpm_atmel.base, region_size, "tpm_atmel0") == NULL) ? 0 : 1;
+
+
+ if (IS_ERR
+ (pdev =
+ platform_device_register_simple("tpm_atmel", -1, NULL, 0))) {
+ rc = PTR_ERR(pdev);
+ goto err_rel_reg;
}
- /* query chip for its version number */
- if ((version[0] = tpm_read_index(0x00)) != 0xFF) {
- version[1] = tpm_read_index(0x01);
- version[2] = tpm_read_index(0x02);
- version[3] = tpm_read_index(0x03);
- } else {
- dev_info(&pci_dev->dev, "version query failed\n");
+ if (!(chip = tpm_register_hardware(&pdev->dev, &tpm_atmel))) {
rc = -ENODEV;
- goto out_err;
+ goto err_unreg_dev;
}
- if ((rc = tpm_register_hardware(pci_dev, &tpm_atmel)) < 0)
- goto out_err;
-
- dev_info(&pci_dev->dev,
- "Atmel TPM version %d.%d.%d.%d\n", version[0], version[1],
- version[2], version[3]);
+ chip->vendor.iobase = iobase;
+ chip->vendor.base = base;
+ chip->vendor.have_region = have_region;
+ chip->vendor.region_size = region_size;
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_AMD, PCI_DEVICE_ID_AMD_8111_LPC)},
- {0,}
-};
-
-MODULE_DEVICE_TABLE(pci, tpm_pci_tbl);
-
-static struct pci_driver atmel_pci_driver = {
- .name = "tpm_atmel",
- .id_table = tpm_pci_tbl,
- .probe = tpm_atml_init,
- .remove = __devexit_p(tpm_remove),
- .suspend = tpm_pm_suspend,
- .resume = tpm_pm_resume,
-};
-
-static int __init init_atmel(void)
-{
- return pci_register_driver(&atmel_pci_driver);
+err_unreg_dev:
+ platform_device_unregister(pdev);
+err_rel_reg:
+ atmel_put_base_addr(iobase);
+ if (have_region)
+ atmel_release_region(base,
+ region_size);
+err_unreg_drv:
+ driver_unregister(&atml_drv);
+ return rc;
}
static void __exit cleanup_atmel(void)
{
- pci_unregister_driver(&atmel_pci_driver);
+ driver_unregister(&atml_drv);
+ atml_plat_remove();
}
module_init(init_atmel);
git://git.onelab.eu / linux-2.6.git / blobdiff