Add pci utility

[netwatch.git] / tools / pci.c

diff --git a/tools/pci.c b/tools/pci.c
new file mode 100644 (file)
index 0000000..abfb8a5
--- /dev/null
+++ b/tools/pci.c
@@ -0,0 +1,72 @@
+#include <pci.h>
+#include <string.h>
+
+int main(int argc, char **argv)
+{
+       unsigned int bus, dev, fn, addr;
+       unsigned char type = 'b';
+       unsigned int datum;
+       
+       if (iopl(3) < 0)
+       {
+               perror("iopl");
+               return 1;
+       }
+       
+       if ((argc < 5) || (argc > 7))
+       {
+       usage:
+               printf("usage: %s bus dev fn addr [b|w|l [datum]]\n", argv[0]);
+               return 2;
+       }
+       
+       bus = strtoul(argv[1], NULL, 0);
+       dev = strtoul(argv[2], NULL, 0);
+       fn = strtoul(argv[3], NULL, 0);
+       addr = strtoul(argv[4], NULL, 0);
+       
+       if (argc > 5)
+               type = *argv[5];
+       
+       if (argc > 6)
+       {
+               datum = strtoul(argv[6], NULL, 0);
+               switch (type)
+               {
+               case 'b':
+                       datum &= 0xFF;
+                       pci_write8(bus, dev, fn, addr, datum);
+                       printf("Wrote byte 0x%02x to %02x:%02x.%x[%02x]\n", datum, bus, dev, fn, addr);
+                       break;
+               case 'w':
+                       datum &= 0xFFFF;
+                       pci_write16(bus, dev, fn, addr, datum);
+                       printf("Wrote word 0x%04x to %02x:%02x.%x[%02x]\n", datum, bus, dev, fn, addr);
+                       break;
+               case 'l':
+                       pci_write32(bus, dev, fn, addr, datum);
+                       printf("Wrote long 0x%08x to %02x:%02x.%x[%02x]\n", datum, bus, dev, fn, addr);
+                       break;
+               default:
+                       goto usage;
+               }
+       } else {
+               switch(type)
+               {
+               case 'b':
+                       datum = pci_read8(bus, dev, fn, addr);
+                       printf("Read byte 0x%02x from %02x:%02x.%x[%02x]\n", datum, bus, dev, fn, addr);
+                       break;
+               case 'w':
+                       datum = pci_read16(bus, dev, fn, addr);
+                       printf("Read word 0x%04x from %02x:%02x.%x[%02x]\n", datum, bus, dev, fn, addr);
+                       break;
+               case 'l':
+                       datum = pci_read32(bus, dev, fn, addr);
+                       printf("Read long 0x%08x from %02x:%02x.%x[%02x]\n", datum, bus, dev, fn, addr);
+                       break;
+               default:
+                       goto usage;
+               }
+       }
+}