Provide API calls for register and bank address resolution

1 files changed, 33 insertions, 2 deletions

diff --git a/protocols/default.c b/protocols/default.c
index 6f3dccf..f78c656 100644
--- a/protocols/default.c
+++ b/protocols/default.c
@@ -7,9 +7,40 @@
 #include "error.h"
 #include "bar.h"
 #include "datacpy.h"
+#include "pci.h"
 
 #define default_datacpy(dst, src, access, bank)   pcilib_datacpy(dst, src, access, 1, bank->raw_endianess)
 
+uintptr_t pcilib_default_resolve(pcilib_t *ctx, pcilib_register_bank_context_t *bank_ctx, pcilib_address_resolution_flags_t flags, pcilib_register_addr_t reg_addr) {
+    uintptr_t addr;
+    const pcilib_register_bank_description_t *b = bank_ctx->bank;
+
+    if (reg_addr == PCILIB_REGISTER_ADDRESS_INVALID) reg_addr = 0;
+
+    switch (flags&PCILIB_ADDRESS_RESOLUTION_MASK_ACCESS_MODE) {
+     case 0:
+	if (b->read_addr != b->write_addr)
+	    return PCILIB_ADDRESS_INVALID;
+     case PCILIB_ADDRESS_RESOLUTION_FLAG_READ_ONLY:
+	addr = b->read_addr + reg_addr;
+	break;
+     case PCILIB_ADDRESS_RESOLUTION_FLAG_WRITE_ONLY:
+        addr = b->write_addr + reg_addr;
+     default:
+        return PCILIB_ADDRESS_INVALID;
+    }
+
+    switch (flags&PCILIB_ADDRESS_RESOLUTION_MASK_ADDRESS_TYPE) {
+     case 0:
+        return (uintptr_t)pcilib_resolve_bar_address(ctx, b->bar, addr);
+     case PCILIB_ADDRESS_RESOLUTION_FLAG_BUS_ADDRESS:
+     case PCILIB_ADDRESS_RESOLUTION_FLAG_PHYS_ADDRESS:
+        return ctx->board_info.bar_start[b->bar] + addr;
+    }
+
+    return PCILIB_ADDRESS_INVALID;
+}
+
 int pcilib_default_read(pcilib_t *ctx, pcilib_register_bank_context_t *bank_ctx, pcilib_register_addr_t addr, pcilib_register_value_t *value) {
     char *ptr;
     pcilib_register_value_t val = 0;
@@ -18,7 +49,7 @@ int pcilib_default_read(pcilib_t *ctx, pcilib_register_bank_context_t *bank_ctx,
 
     int access = b->access / 8;
 
-    ptr =  pcilib_resolve_register_address(ctx, b->bar, b->read_addr + addr);
+    ptr =  pcilib_resolve_bar_address(ctx, b->bar, b->read_addr + addr);
     default_datacpy(&val, ptr, access, b);
 
 //    *value = val&BIT_MASK(bits);
@@ -35,7 +66,7 @@ int pcilib_default_write(pcilib_t *ctx, pcilib_register_bank_context_t *bank_ctx
 
     int access = b->access / 8;
 
-    ptr =  pcilib_resolve_register_address(ctx, b->bar, b->write_addr + addr);
+    ptr =  pcilib_resolve_bar_address(ctx, b->bar, b->write_addr + addr);
     default_datacpy(ptr, &value, access, b);
 
     return 0;