Make the Texas Instruments 802.11g chipset work with the NDISulator.

This was tested with a Netgear WG311v2 802.11b/g PCI card. Things
that were fixed:

- This chip has two memory mapped regions, one at PCIR_BAR(0) and the
  other at PCIR_BAR(1). This is a little different from the other
  chips I've seen with two PCI shared memory regions, since they tend
  to have the second BAR ad PCIR_BAR(2). if_ndis_pci.c tests explicitly
  for PCIR_BAR(2). This has been changed to simply fill in ndis_res_mem
  first and ndis_res_altmem second, if a second shared memory range
  exists. Given that NDIS drivers seem to scan for BARs in ascending
  order, I think this should be ok.

- Fixed the code that tries to process firmware images that have been
  loaded as .ko files. To save a step, I was setting up the address
  mapping in ndis_open_file(), but ndis_map_file() flags pre-existing
  mappings as an error (to avoid duplicate mappings). Changed this so
  that the mapping is now donw in ndis_map_file() as expected.

- Made the typedef for 'driver_entry' explicitly include __stdcall
  to silence gcc warning in ndis_load_driver().

NOTE: the Texas Instruments ACX111 driver needs firmware. With my
card, there were 3 .bin files shipped with the driver. You must
either put these files in /compat/ndis or convert them with
ndiscvt -f and kldload them so the driver can use them. Without
the firmware image, the NIC won't work.

sys/compat/ndis/kern_ndis.c

@@ -1613,7 +1613,7 @@ ndis_load_driver(img, arg)
 	vm_offset_t		img;
 	void			*arg;
 {
-	__stdcall driver_entry	entry;
+	driver_entry		entry;
 	image_optional_header	opt_hdr;
 	image_import_descriptor imp_desc;
 	ndis_unicode_string	dummystr;

sys/compat/ndis/ndis_var.h

@@ -1478,7 +1478,7 @@ typedef void (*ndis_allocdone_handler)(ndis_handle, void *,
 		ndis_physaddr *, uint32_t, void *);
 typedef uint8_t (*ndis_checkforhang_handler)(ndis_handle);
 
-typedef ndis_status (*driver_entry)(void *, ndis_unicode_string *);
+typedef __stdcall ndis_status (*driver_entry)(void *, ndis_unicode_string *);
 
 extern image_patch_table ndis_functbl[];
 

sys/compat/ndis/subr_ndis.c

@@ -2564,10 +2564,19 @@ ndis_find_sym(lf, filename, suffix, sym)
 	caddr_t			*sym;
 {
 	char			fullsym[MAXPATHLEN];
+	char			*suf;
 	int			i;
 
 	bzero(fullsym, sizeof(fullsym));
 	strcpy(fullsym, filename);
+	if (strlen(filename) < 4)
+		return(EINVAL);
+
+	/* If the filename has a .ko suffix, strip if off. */
+	suf = fullsym + (strlen(filename) - 3);
+	if (strcmp(suf, ".ko") == 0)
+		*suf = '\0';
+
 	for (i = 0; i < strlen(fullsym); i++) {
 		if (fullsym[i] == '.')
 			fullsym[i] = '_';
@@ -2645,7 +2654,6 @@ ndis_open_file(status, filehandle, filelength, filename, highestaddr)
 			continue;
 		fh->nf_vp = lf;
 		fh->nf_type = NDIS_FH_TYPE_MODULE;
-		fh->nf_map = kldstart;
 		*filelength = fh->nf_maplen = (kldend - kldstart) & 0xFFFFFFFF;
 		*filehandle = fh;
 		free(afilename, M_DEVBUF);
@@ -2713,6 +2721,8 @@ ndis_map_file(status, mappedbuffer, filehandle)
 {
 	ndis_fh			*fh;
 	struct thread		*td = curthread;
+	linker_file_t		lf;
+	caddr_t			kldstart;
 	int			error, resid;
 
 	if (filehandle == NULL) {
@@ -2733,7 +2743,12 @@ ndis_map_file(status, mappedbuffer, filehandle)
 	}
 
 	if (fh->nf_type == NDIS_FH_TYPE_MODULE) {
-		/* Already found the mapping address during the open. */
+		lf = fh->nf_vp;
+		if (ndis_find_sym(lf, lf->filename, "_start", &kldstart)) {
+			*status = NDIS_STATUS_FAILURE;
+			return;
+		}
+		fh->nf_map = kldstart;
 		*status = NDIS_STATUS_SUCCESS;
 		*mappedbuffer = fh->nf_map;
 		return;

sys/dev/if_ndis/if_ndis_pci.c

@@ -208,7 +208,7 @@ ndis_attach_pci(dev)
 					error = ENXIO;
 					goto fail;
 				}
-				if (rle->rid == PCIR_BAR(2)) {
+				if (sc->ndis_res_mem) {
 					sc->ndis_altmem_rid = rle->rid;
 					sc->ndis_res_altmem =
 					    bus_alloc_resource(dev,