From e1a53273fc1e06ef5bed32348c80639d4661c994 Mon Sep 17 00:00:00 2001
From: Matthew Fioravante <matthew.fioravante@jhuapl.edu>
Date: Tue, 13 Nov 2012 10:46:58 +0000
Subject: minios: add tpmfront, tpm_tis, and tpmback drivers

This patch adds 3 new drivers to mini-os.

tpmfront - paravirtualized tpm frontend driver
tpmback - paravirtualized tpm backend driver
tpm_tis - hardware tpm driver

Unfortunately these drivers were derived from GPL
licensed linux kernel drivers so they must carry
the GPL license. However, since mini-os now
supports conditional compilation, hopefully these
drivers can be included into the xen tree and
conditionally removed from non-gpl projects.
By default they are disabled in the makefile.

Signed-off-by: Matthew Fioravante <matthew.fioravante@jhuapl.edu>
Acked-by: Ian Campbell <ian.campbell@citrix.com>
Committed-by: Ian Campbell <ian.campbell@citrix.com>
---
 extras/mini-os/lib/sys.c | 48 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 48 insertions(+)

(limited to 'extras/mini-os/lib')

diff --git a/extras/mini-os/lib/sys.c b/extras/mini-os/lib/sys.c
index 6cb97b1932..d212969b52 100644
--- a/extras/mini-os/lib/sys.c
+++ b/extras/mini-os/lib/sys.c
@@ -27,6 +27,8 @@
 #include <netfront.h>
 #include <blkfront.h>
 #include <fbfront.h>
+#include <tpmfront.h>
+#include <tpm_tis.h>
 #include <xenbus.h>
 #include <xenstore.h>
 
@@ -293,6 +295,16 @@ int read(int fd, void *buf, size_t nbytes)
         case FTYPE_BLK: {
 	    return blkfront_posix_read(fd, buf, nbytes);
         }
+#endif
+#ifdef CONFIG_TPMFRONT
+        case FTYPE_TPMFRONT: {
+	    return tpmfront_posix_read(fd, buf, nbytes);
+        }
+#endif
+#ifdef CONFIG_TPM_TIS
+        case FTYPE_TPM_TIS: {
+	    return tpm_tis_posix_read(fd, buf, nbytes);
+        }
 #endif
 	default:
 	    break;
@@ -329,6 +341,14 @@ int write(int fd, const void *buf, size_t nbytes)
 #ifdef CONFIG_BLKFRONT
 	case FTYPE_BLK:
 	    return blkfront_posix_write(fd, buf, nbytes);
+#endif
+#ifdef CONFIG_TPMFRONT
+	case FTYPE_TPMFRONT:
+	    return tpmfront_posix_write(fd, buf, nbytes);
+#endif
+#ifdef CONFIG_TPM_TIS
+	case FTYPE_TPM_TIS:
+	    return tpm_tis_posix_write(fd, buf, nbytes);
 #endif
 	default:
 	    break;
@@ -341,8 +361,16 @@ int write(int fd, const void *buf, size_t nbytes)
 off_t lseek(int fd, off_t offset, int whence)
 {
     switch(files[fd].type) {
+#if defined(CONFIG_BLKFRONT) || defined(CONFIG_TPMFRONT) || defined(CONFIG_TPM_TIS)
 #ifdef CONFIG_BLKFRONT
        case FTYPE_BLK:
+#endif
+#ifdef CONFIG_TPMFRNT
+       case FTYPE_TPMFRONT:
+#endif
+#ifdef CONFIG_TPM_TIS
+       case FTYPE_TPM_TIS:
+#endif
 	  switch (whence) {
 	     case SEEK_SET:
 		files[fd].file.offset = offset;
@@ -420,6 +448,18 @@ int close(int fd)
 	    files[fd].type = FTYPE_NONE;
 	    return 0;
 #endif
+#ifdef CONFIG_TPMFRONT
+	case FTYPE_TPMFRONT:
+            shutdown_tpmfront(files[fd].tpmfront.dev);
+	    files[fd].type = FTYPE_NONE;
+	    return 0;
+#endif
+#ifdef CONFIG_TPM_TIS
+	case FTYPE_TPM_TIS:
+            shutdown_tpm_tis(files[fd].tpm_tis.dev);
+	    files[fd].type = FTYPE_NONE;
+	    return 0;
+#endif
 #ifdef CONFIG_KBDFRONT
 	case FTYPE_KBD:
             shutdown_kbdfront(files[fd].kbd.dev);
@@ -488,6 +528,14 @@ int fstat(int fd, struct stat *buf)
 #ifdef CONFIG_BLKFRONT
 	case FTYPE_BLK:
 	   return blkfront_posix_fstat(fd, buf);
+#endif
+#ifdef CONFIG_TPMFRONT
+	case FTYPE_TPMFRONT:
+	   return tpmfront_posix_fstat(fd, buf);
+#endif
+#ifdef CONFIG_TPM_TIS
+	case FTYPE_TPM_TIS:
+	   return tpm_tis_posix_fstat(fd, buf);
 #endif
 	default:
 	    break;
-- 
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