u-boot/drivers/scsi/scsi-uclass.c

/*
 * Copyright (c) 2015 Google, Inc
 * Written by Simon Glass <sjg@chromium.org>
 * Copyright (c) 2016 Xilinx, Inc
 * Written by Michal Simek
 *
 * Based on ahci-uclass.c
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */

#include <common.h>
#include <dm.h>
#include <scsi.h>

UCLASS_DRIVER(scsi) = {
	.id		= UCLASS_SCSI,
	.name		= "scsi",
	.per_device_platdata_auto_alloc_size = sizeof(struct scsi_platdata),
};
dm: Add support for scsi/sata based devices All sata based drivers are bind and corresponding block device is created. Based on this find_scsi_device() is able to get back block device based on scsi_curr_dev pointer. intr_scsi() is commented now but it can be replaced by calling find_scsi_device() and scsi_scan(). scsi_dev_desc[] is commented out but common/scsi.c heavily depends on it. That's why CONFIG_SYS_SCSI_MAX_DEVICE is hardcoded to 1 and symbol is reassigned to a block description allocated by uclass. There is only one block description by device now but it doesn't need to be correct when more devices are present. scsi_bind() ensures corresponding block device creation. uclass post_probe (scsi_post_probe()) is doing low level init. SCSI/SATA DM based drivers requires to have 64bit base address as the first entry in platform data structure to setup mmio_base. Signed-off-by: Michal Simek <michal.simek@xilinx.com> Reviewed-by: Simon Glass <sjg@chromium.org> 2016-09-08 13:06:45 +00:00			`/*`
			`* Copyright (c) 2015 Google, Inc`
			`* Written by Simon Glass <sjg@chromium.org>`
			`* Copyright (c) 2016 Xilinx, Inc`
			`* Written by Michal Simek`
			`*`
			`* Based on ahci-uclass.c`
			`*`
			`* SPDX-License-Identifier: GPL-2.0+`
			`*/`

			`#include <common.h>`
			`#include <dm.h>`
			`#include <scsi.h>`

			`UCLASS_DRIVER(scsi) = {`
			`.id = UCLASS_SCSI,`
			`.name = "scsi",`
dm: scsi: Use the uclass platform data At present the two driver-model SCSI drivers use device platform data to store information that relates to the uclass. It is better to use uclass platform data in this situation. Update the code to do this. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> 2017-06-15 03:28:31 +00:00			`.per_device_platdata_auto_alloc_size = sizeof(struct scsi_platdata),`
dm: Add support for scsi/sata based devices All sata based drivers are bind and corresponding block device is created. Based on this find_scsi_device() is able to get back block device based on scsi_curr_dev pointer. intr_scsi() is commented now but it can be replaced by calling find_scsi_device() and scsi_scan(). scsi_dev_desc[] is commented out but common/scsi.c heavily depends on it. That's why CONFIG_SYS_SCSI_MAX_DEVICE is hardcoded to 1 and symbol is reassigned to a block description allocated by uclass. There is only one block description by device now but it doesn't need to be correct when more devices are present. scsi_bind() ensures corresponding block device creation. uclass post_probe (scsi_post_probe()) is doing low level init. SCSI/SATA DM based drivers requires to have 64bit base address as the first entry in platform data structure to setup mmio_base. Signed-off-by: Michal Simek <michal.simek@xilinx.com> Reviewed-by: Simon Glass <sjg@chromium.org> 2016-09-08 13:06:45 +00:00			`};`