GK SDK 源码库: XMIPCLinuxV100R005C00SPC030 (kernel/tools/open_source excluded)

source/gmp/drv/osal/linux/kernel/mmz/drv_mmz.c

@@ -0,0 +1,104 @@
+/*
+ * Copyright (c) XMEDIA. All rights reserved.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/printk.h>
+#include <linux/semaphore.h>
+#include <linux/slab.h>
+#include "osal.h"
+#include "osal_mmz.h"
+#define MMZ_NAME "anonymous"
+
+unsigned long long mmz_alloc(const char *mmz_name, const char *buf_name, unsigned long size)
+{
+    mmz_mmb_t *pmmb = NULL;
+
+    pmmb = mmz_mmb_alloc(buf_name, size, 0, 0, mmz_name);
+    if (pmmb == NULL) {
+        osal_printk("Mmz malloc failed!\n");
+        return 0UL;
+    }
+
+    return mmz_mmb_phys(pmmb);
+}
+EXPORT_SYMBOL(mmz_alloc);
+
+void mmz_free(unsigned long long phy_addr)
+{
+    mmz_mmb_freeby_phys(phy_addr);
+}
+EXPORT_SYMBOL(mmz_free);
+
+void *mmz_map(unsigned long long phy_addr, unsigned long size, bool cached)
+{
+    mmz_mmb_t *pmmb = NULL;
+    void *vir_addr = NULL;
+    unsigned long offset;
+
+    pmmb = mmz_mmb_getby_phys_2(phy_addr, &offset);
+    if ( pmmb == NULL ) {
+        osal_printk("mmz remap cache get mmz_mmb failed\n");
+        return NULL;
+    }
+
+    if (size == 0 || size + offset > pmmb->length) {
+        osal_printk("mmz remap size(0x%lx) is zero or bigger than mmb size(0x%lx)", size, pmmb->length);
+        return NULL;
+    }
+
+    if ( cached == 1 ) {
+        vir_addr = mmz_mmb_map2kern_cached(pmmb);
+    } else {
+        vir_addr = mmz_mmb_map2kern(pmmb);
+    }
+    if (vir_addr == NULL) {
+        osal_printk("mmz remap failed!\n");
+        return NULL;
+    }
+
+    return vir_addr + offset;
+}
+EXPORT_SYMBOL(mmz_map);
+
+void mmz_unmap(void *vir_addr)
+{
+    if (vir_addr != NULL) {
+        mmz_mmb_t *pmmb = mmz_mmb_getby_kvirt(vir_addr);
+
+        if (pmmb != NULL) {
+            mmz_mmb_unmap(pmmb);
+        }
+    }
+}
+EXPORT_SYMBOL(mmz_unmap);
+
+int mmz_check_phyaddr(unsigned long long phy_addr, unsigned long len)
+{
+    /* if address in mmz of current system */
+    if (mmz_is_phys_in_mmz(phy_addr, len))
+        return -1;
+
+    return 0;
+}
+EXPORT_SYMBOL(mmz_check_phyaddr);
+
+int mmz_flush_cache(unsigned long phy_addr, void *kvirt, unsigned long length)
+{
+    mmz_mmb_t *pmmb = NULL;
+    unsigned long offset;
+
+    /*err address flush maybe panic so judge input parameter*/
+    pmmb = mmz_mmb_getby_phys_2(phy_addr, &offset);
+    if ( pmmb == NULL ) {
+        osal_printk("mmz flush cache get mmz_mmb failed\n");
+        return -1;
+    }
+
+    if ( mmz_mmb_flush_dcache_byaddr(kvirt, phy_addr, length) != 0 )
+        return -1;
+
+   return 0;
+}
+EXPORT_SYMBOL(mmz_flush_cache);