static int ps3stor_probe_access(struct ps3_storage_device *dev) { int res, error; unsigned int i; unsigned long n; if (dev->sbd.match_id == PS3_MATCH_ID_STOR_ROM) { /* special case: CD-ROM is assumed always accessible */ dev->accessible_regions = 1; return 0; } error = -EPERM; for (i = 0; i < dev->num_regions; i++) { dev_dbg(&dev->sbd.core, "%s:%u: checking accessibility of region %u\n", __func__, __LINE__, i); dev->region_idx = i; res = ps3stor_read_write_sectors(dev, dev->bounce_lpar, 0, 1, 0); if (res) { dev_dbg(&dev->sbd.core, "%s:%u: read failed, " "region %u is not accessible\n", __func__, __LINE__, i); continue; } dev_dbg(&dev->sbd.core, "%s:%u: region %u is accessible\n", __func__, __LINE__, i); set_bit(i, &dev->accessible_regions); /* We can access at least one region */ error = 0; } if (error) return error; n = hweight_long(dev->accessible_regions); if (n > 1) dev_info(&dev->sbd.core, "%s:%u: %lu accessible regions found. Only the first " "one will be used", __func__, __LINE__, n); dev->region_idx = __ffs(dev->accessible_regions); dev_info(&dev->sbd.core, "First accessible region has index %u start %lu size %lu\n", dev->region_idx, dev->regions[dev->region_idx].start, dev->regions[dev->region_idx].size); return 0; }
static ssize_t ps3flash_read_write_sectors(struct ps3_storage_device *dev, u64 lpar, u64 start_sector, u64 sectors, int write) { u64 res = ps3stor_read_write_sectors(dev, lpar, start_sector, sectors, write); if (res) { dev_err(&dev->sbd.core, "%s:%u: %s failed 0x%lx\n", __func__, __LINE__, write ? "write" : "read", res); return -EIO; } return sectors; }
static int ps3flash_read_write_sectors(struct ps3_storage_device *dev, u64 start_sector, int write) { struct ps3flash_private *priv = ps3_system_bus_get_drvdata(&dev->sbd); u64 res = ps3stor_read_write_sectors(dev, dev->bounce_lpar, start_sector, priv->chunk_sectors, write); if (res) { dev_err(&dev->sbd.core, "%s:%u: %s failed 0x%llx\n", __func__, __LINE__, write ? "write" : "read", res); return -EIO; } return 0; }