acked-by: idlogin <putlinuxonit@gmail.com>

2009/8/17 Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
On 13.08.2009 00:43, Carl-Daniel Hailfinger wrote:
> On 13.08.2009 00:19, Carl-Daniel Hailfinger wrote:
>
>> On 12.08.2009 20:44, Stefan Reinauer wrote:
>>
>>
>>> This needs /dev/cpu0 from ports/sysutils
>>>
>>>
>> Stefan, since the original patch is from you, you may want to add
>> your Signoff here as well.
>>

Compiles on FreeBSD and Linux and is the least invasive solution I could
come up with.

This is 0.9.1 material.

Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>

Index: flashrom-rdmsr_freebsd/flash.h
===================================================================
--- flashrom-rdmsr_freebsd/flash.h      (Revision 685)
+++ flashrom-rdmsr_freebsd/flash.h      (Arbeitskopie)
@@ -309,11 +309,21 @@
 void physunmap(void *virt_addr, size_t len);
 int setup_cpu_msr(int cpu);
 void cleanup_cpu_msr(void);
-#ifndef __DARWIN__
+#if !defined(__DARWIN__) && !defined(__FreeBSD__) && !defined(__DragonFly__)
 typedef struct { uint32_t hi, lo; } msr_t;
 msr_t rdmsr(int addr);
 int wrmsr(int addr, msr_t msr);
 #endif
+#if defined(__FreeBSD__) || defined(__DragonFly__)
+/* FreeBSD already has conflicting definitions for wrmsr/rdmsr. */
+#undef rdmsr
+#undef wrmsr
+#define rdmsr freebsd_rdmsr
+#define wrmsr freebsd_wrmsr
+typedef struct { uint32_t hi, lo; } msr_t;
+msr_t freebsd_rdmsr(int addr);
+int freebsd_wrmsr(int addr, msr_t msr);
+#endif

 /* internal.c */
 struct pci_dev *pci_dev_find_filter(struct pci_filter filter);
Index: flashrom-rdmsr_freebsd/physmap.c
===================================================================
--- flashrom-rdmsr_freebsd/physmap.c    (Revision 685)
+++ flashrom-rdmsr_freebsd/physmap.c    (Arbeitskopie)
@@ -215,6 +215,91 @@
       fd_msr = -1;
 }
 #else
+#if defined(__FreeBSD__) || defined(__DragonFly__)
+#include <sys/ioctl.h>
+
+typedef struct {
+       int msr;
+       uint64_t data;
+} cpu_msr_args_t;
+#define CPU_RDMSR _IOWR('c', 1, cpu_msr_args_t)
+#define CPU_WRMSR _IOWR('c', 2, cpu_msr_args_t)
+
+static int fd_msr = -1;
+
+msr_t rdmsr(int addr)
+{
+       cpu_msr_args_t args;
+
+       msr_t msr = { 0xffffffff, 0xffffffff };
+
+       args.msr = addr;
+
+       if (ioctl(fd_msr, CPU_RDMSR, &args) < 0) {
+               perror("CPU_RDMSR");
+               close(fd_msr);
+               exit(1);
+       }
+
+       msr.lo = args.data & 0xffffffff;
+       msr.hi = args.data >> 32;
+
+       return msr;
+}
+
+int wrmsr(int addr, msr_t msr)
+{
+       cpu_msr_args_t args;
+
+       args.msr = addr;
+       args.data = (((uint64_t)msr.hi) << 32) | msr.lo;
+
+       if (ioctl(fd_msr, CPU_WRMSR, &args) < 0) {
+               perror("CPU_WRMSR");
+               close(fd_msr);
+               exit(1);
+       }
+
+       return 0;
+}
+
+int setup_cpu_msr(int cpu)
+{
+       char msrfilename[64];
+       memset(msrfilename, 0, 64);
+       sprintf(msrfilename, "/dev/cpu%d", cpu);
+
+       if (fd_msr != -1) {
+               printf("MSR was already initialized\n");
+               return -1;
+       }
+
+       fd_msr = open(msrfilename, O_RDWR);
+
+       if (fd_msr < 0) {
+               perror("Error while opening /dev/cpu0");
+               printf("Did you install ports/sysutils/devcpu?\n");
+               return -1;
+       }
+
+       return 0;
+}
+
+void cleanup_cpu_msr(void)
+{
+       if (fd_msr == -1) {
+               printf("No MSR initialized.\n");
+               return;
+       }
+
+       close(fd_msr);
+
+       /* Clear MSR file descriptor */
+       fd_msr = -1;
+}
+
+#else
+
 #ifdef __DARWIN__
 int setup_cpu_msr(int cpu)
 {
@@ -251,4 +336,5 @@
 }
 #endif
 #endif
+#endif



--
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--
Udu E. Ogah
.~~~~~~~~~~.