Add qemu 2.4.0

[kvmfornfv.git] / qemu / roms / u-boot / drivers / block / sandbox.c

diff --git a/qemu/roms/u-boot/drivers/block/sandbox.c b/qemu/roms/u-boot/drivers/block/sandbox.c
new file mode 100644 (file)
index 0000000..73f4c4a
--- /dev/null
+++ b/qemu/roms/u-boot/drivers/block/sandbox.c
@@ -0,0 +1,124 @@
+/*
+ * Copyright (C) 2013 Henrik Nordstrom <henrik@henriknordstrom.net>
+ *
+ * SPDX-License-Identifier:    GPL-2.0+
+ */
+
+#include <config.h>
+#include <common.h>
+#include <part.h>
+#include <os.h>
+#include <malloc.h>
+#include <sandboxblockdev.h>
+#include <asm/errno.h>
+
+static struct host_block_dev host_devices[CONFIG_HOST_MAX_DEVICES];
+
+static struct host_block_dev *find_host_device(int dev)
+{
+       if (dev >= 0 && dev < CONFIG_HOST_MAX_DEVICES)
+               return &host_devices[dev];
+
+       return NULL;
+}
+
+static unsigned long host_block_read(int dev, unsigned long start,
+                                    lbaint_t blkcnt, void *buffer)
+{
+       struct host_block_dev *host_dev = find_host_device(dev);
+
+       if (!host_dev)
+               return -1;
+       if (os_lseek(host_dev->fd,
+                    start * host_dev->blk_dev.blksz,
+                    OS_SEEK_SET) == -1) {
+               printf("ERROR: Invalid position\n");
+               return -1;
+       }
+       ssize_t len = os_read(host_dev->fd, buffer,
+                             blkcnt * host_dev->blk_dev.blksz);
+       if (len >= 0)
+               return len / host_dev->blk_dev.blksz;
+       return -1;
+}
+
+static unsigned long host_block_write(int dev, unsigned long start,
+                                     lbaint_t blkcnt, const void *buffer)
+{
+       struct host_block_dev *host_dev = find_host_device(dev);
+       if (os_lseek(host_dev->fd,
+                    start * host_dev->blk_dev.blksz,
+                    OS_SEEK_SET) == -1) {
+               printf("ERROR: Invalid position\n");
+               return -1;
+       }
+       ssize_t len = os_write(host_dev->fd, buffer, blkcnt *
+                              host_dev->blk_dev.blksz);
+       if (len >= 0)
+               return len / host_dev->blk_dev.blksz;
+       return -1;
+}
+
+int host_dev_bind(int dev, char *filename)
+{
+       struct host_block_dev *host_dev = find_host_device(dev);
+
+       if (!host_dev)
+               return -1;
+       if (host_dev->blk_dev.priv) {
+               os_close(host_dev->fd);
+               host_dev->blk_dev.priv = NULL;
+       }
+       if (host_dev->filename)
+               free(host_dev->filename);
+       if (filename && *filename) {
+               host_dev->filename = strdup(filename);
+       } else {
+               host_dev->filename = NULL;
+               return 0;
+       }
+
+       host_dev->fd = os_open(host_dev->filename, OS_O_RDWR);
+       if (host_dev->fd == -1) {
+               printf("Failed to access host backing file '%s'\n",
+                      host_dev->filename);
+               return 1;
+       }
+
+       block_dev_desc_t *blk_dev = &host_dev->blk_dev;
+       blk_dev->if_type = IF_TYPE_HOST;
+       blk_dev->priv = host_dev;
+       blk_dev->blksz = 512;
+       blk_dev->lba = os_lseek(host_dev->fd, 0, OS_SEEK_END) / blk_dev->blksz;
+       blk_dev->block_read = host_block_read;
+       blk_dev->block_write = host_block_write;
+       blk_dev->dev = dev;
+       blk_dev->part_type = PART_TYPE_UNKNOWN;
+       init_part(blk_dev);
+
+       return 0;
+}
+
+int host_get_dev_err(int dev, block_dev_desc_t **blk_devp)
+{
+       struct host_block_dev *host_dev = find_host_device(dev);
+
+       if (!host_dev)
+               return -ENODEV;
+
+       if (!host_dev->blk_dev.priv)
+               return -ENOENT;
+
+       *blk_devp = &host_dev->blk_dev;
+       return 0;
+}
+
+block_dev_desc_t *host_get_dev(int dev)
+{
+       block_dev_desc_t *blk_dev;
+
+       if (host_get_dev_err(dev, &blk_dev))
+               return NULL;
+
+       return blk_dev;
+}