ppc440_sdram: Split off map/unmap of sdram banks for later reuse

Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <23560b6a71682d513f3dd8e9ed3852f51d5eb309.1664021647.git.balaton@eik.bme.hu>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>

1 files changed, 21 insertions, 12 deletions

diff --git a/hw/ppc/ppc440_uc.c b/hw/ppc/ppc440_uc.c
index 8eae4ad..900b7ab 100644
--- a/hw/ppc/ppc440_uc.c
+++ b/hw/ppc/ppc440_uc.c
@@ -23,6 +23,7 @@
 #include "sysemu/reset.h"
 #include "ppc440.h"
 #include "qom/object.h"
+#include "trace.h"
 
 /*****************************************************************************/
 /* L2 Cache as SRAM */
@@ -563,26 +564,34 @@ static uint64_t sdram_size(uint32_t bcr)
     return size;
 }
 
+static void sdram_bank_map(Ppc4xxSdramBank *bank)
+{
+    memory_region_init(&bank->container, NULL, "sdram-container", bank->size);
+    memory_region_add_subregion(&bank->container, 0, &bank->ram);
+    memory_region_add_subregion(get_system_memory(), bank->base,
+                                &bank->container);
+}
+
+static void sdram_bank_unmap(Ppc4xxSdramBank *bank)
+{
+    memory_region_del_subregion(get_system_memory(), &bank->container);
+    memory_region_del_subregion(&bank->container, &bank->ram);
+    object_unparent(OBJECT(&bank->container));
+}
+
 static void sdram_set_bcr(ppc440_sdram_t *sdram, int i,
                           uint32_t bcr, int enabled)
 {
     if (sdram->bank[i].bcr & 1) {
         /* First unmap RAM if enabled */
-        memory_region_del_subregion(get_system_memory(),
-                                    &sdram->bank[i].container);
-        memory_region_del_subregion(&sdram->bank[i].container,
-                                    &sdram->bank[i].ram);
-        object_unparent(OBJECT(&sdram->bank[i].container));
+        trace_ppc4xx_sdram_unmap(sdram_base(sdram->bank[i].bcr),
+                                 sdram_size(sdram->bank[i].bcr));
+        sdram_bank_unmap(&sdram->bank[i]);
     }
     sdram->bank[i].bcr = bcr & 0xffe0ffc1;
     if (enabled && (bcr & 1)) {
-        memory_region_init(&sdram->bank[i].container, NULL, "sdram-container",
-                           sdram_size(bcr));
-        memory_region_add_subregion(&sdram->bank[i].container, 0,
-                                    &sdram->bank[i].ram);
-        memory_region_add_subregion(get_system_memory(),
-                                    sdram_base(bcr),
-                                    &sdram->bank[i].container);
+        trace_ppc4xx_sdram_map(sdram_base(bcr), sdram_size(bcr));
+        sdram_bank_map(&sdram->bank[i]);
     }
 }