Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 216 insertions, 0 deletions

diff --git a/drivers/char/tpm/tpm_atmel.c b/drivers/char/tpm/tpm_atmel.c
new file mode 100644
index 000000000000..f9333e729b62
--- /dev/null
+++ b/drivers/char/tpm/tpm_atmel.c
@@ -0,0 +1,216 @@
+/*
+ * Copyright (C) 2004 IBM Corporation
+ *
+ * Authors:
+ * Leendert van Doorn <leendert@watson.ibm.com>
+ * Dave Safford <safford@watson.ibm.com>
+ * Reiner Sailer <sailer@watson.ibm.com>
+ * Kylene Hall <kjhall@us.ibm.com>
+ *
+ * Maintained by: <tpmdd_devel@lists.sourceforge.net>
+ *
+ * Device driver for TCG/TCPA TPM (trusted platform module).
+ * Specifications at www.trustedcomputinggroup.org       
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation, version 2 of the
+ * License.
+ * 
+ */
+
+#include "tpm.h"
+
+/* Atmel definitions */
+#define TPM_ATML_BASE                   0x400
+
+/* write status bits */
+#define ATML_STATUS_ABORT               0x01
+#define ATML_STATUS_LASTBYTE            0x04
+
+/* read status bits */
+#define ATML_STATUS_BUSY                0x01
+#define ATML_STATUS_DATA_AVAIL          0x02
+#define ATML_STATUS_REWRITE             0x04
+
+
+static int tpm_atml_recv(struct tpm_chip *chip, u8 * buf, size_t count)
+{
+        u8 status, *hdr = buf;
+        u32 size;
+        int i;
+        __be32 *native_size;
+
+        /* start reading header */
+        if (count < 6)
+                return -EIO;
+
+        for (i = 0; i < 6; i++) {
+                status = inb(chip->vendor->base + 1);
+                if ((status & ATML_STATUS_DATA_AVAIL) == 0) {
+                        dev_err(&chip->pci_dev->dev,
+                                "error reading header\n");
+                        return -EIO;
+                }
+                *buf++ = inb(chip->vendor->base);
+        }
+
+        /* size of the data received */
+        native_size = (__force __be32 *) (hdr + 2);
+        size = be32_to_cpu(*native_size);
+
+        if (count < size) {
+                dev_err(&chip->pci_dev->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);
+                        if ((status & ATML_STATUS_DATA_AVAIL) == 0) {
+                                dev_err(&chip->pci_dev->dev,
+                                        "error reading data\n");
+                                return -EIO;
+                        }
+                }
+                return -EIO;
+        }
+
+        /* read all the data available */
+        for (; i < size; i++) {
+                status = inb(chip->vendor->base + 1);
+                if ((status & ATML_STATUS_DATA_AVAIL) == 0) {
+                        dev_err(&chip->pci_dev->dev,
+                                "error reading data\n");
+                        return -EIO;
+                }
+                *buf++ = inb(chip->vendor->base);
+        }
+
+        /* make sure data available is gone */
+        status = inb(chip->vendor->base + 1);
+        if (status & ATML_STATUS_DATA_AVAIL) {
+                dev_err(&chip->pci_dev->dev, "data available is stuck\n");
+                return -EIO;
+        }
+
+        return size;
+}
+
+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: ");
+        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);
+        }
+
+        return count;
+}
+
+static void tpm_atml_cancel(struct tpm_chip *chip)
+{
+        outb(ATML_STATUS_ABORT, chip->vendor->base + 1);
+}
+
+static struct file_operations atmel_ops = {
+        .owner = THIS_MODULE,
+        .llseek = no_llseek,
+        .open = tpm_open,
+        .read = tpm_read,
+        .write = tpm_write,
+        .release = tpm_release,
+};
+
+static struct tpm_vendor_specific tpm_atmel = {
+        .recv = tpm_atml_recv,
+        .send = tpm_atml_send,
+        .cancel = tpm_atml_cancel,
+        .req_complete_mask = ATML_STATUS_BUSY | ATML_STATUS_DATA_AVAIL,
+        .req_complete_val = ATML_STATUS_DATA_AVAIL,
+        .base = TPM_ATML_BASE,
+        .miscdev = { .fops = &atmel_ops, },
+};
+
+static int __devinit tpm_atml_init(struct pci_dev *pci_dev,
+                                   const struct pci_device_id *pci_id)
+{
+        u8 version[4];
+        int rc = 0;
+
+        if (pci_enable_device(pci_dev))
+                return -EIO;
+
+        if (tpm_lpc_bus_init(pci_dev, TPM_ATML_BASE)) {
+                rc = -ENODEV;
+                goto out_err;
+        }
+
+        /* 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;
+        }
+
+        /* 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");
+                rc = -ENODEV;
+                goto out_err;
+        }
+
+        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]);
+
+        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);
+}
+
+static void __exit cleanup_atmel(void)
+{
+        pci_unregister_driver(&atmel_pci_driver);
+}
+
+module_init(init_atmel);
+module_exit(cleanup_atmel);
+
+MODULE_AUTHOR("Leendert van Doorn (leendert@watson.ibm.com)");
+MODULE_DESCRIPTION("TPM Driver");
+MODULE_VERSION("2.0");
+MODULE_LICENSE("GPL");