Implement a SATA uclass that can represent a SATA controller.
Signed-off-by: Mugunthan V N mugunthanvnm@ti.com --- drivers/block/Kconfig | 10 +++++++ drivers/block/Makefile | 2 ++ drivers/block/sata-uclass.c | 69 +++++++++++++++++++++++++++++++++++++++++++++ include/dm/uclass-id.h | 1 + 4 files changed, 82 insertions(+) create mode 100644 drivers/block/sata-uclass.c
diff --git a/drivers/block/Kconfig b/drivers/block/Kconfig index e69de29..44d8a6b 100644 --- a/drivers/block/Kconfig +++ b/drivers/block/Kconfig @@ -0,0 +1,10 @@ +menu "SATA Device Support" + +config SATA + bool "Enable driver model for SATA drivers" + depends on DM + help + Enable driver model for block devices like SCSI. It uses the + same API as block, but now implemented by the uclass. + +endmenu diff --git a/drivers/block/Makefile b/drivers/block/Makefile index eb8bda9..c2dae17 100644 --- a/drivers/block/Makefile +++ b/drivers/block/Makefile @@ -5,6 +5,8 @@ # SPDX-License-Identifier: GPL-2.0+ #
+obj-$(CONFIG_SATA) += sata-uclass.o + obj-$(CONFIG_SCSI_AHCI) += ahci.o obj-$(CONFIG_DWC_AHSATA) += dwc_ahsata.o obj-$(CONFIG_FSL_SATA) += fsl_sata.o diff --git a/drivers/block/sata-uclass.c b/drivers/block/sata-uclass.c new file mode 100644 index 0000000..62773b6 --- /dev/null +++ b/drivers/block/sata-uclass.c @@ -0,0 +1,69 @@ +/* + * SATA device U-Class driver + * + * (C) Copyright 2016 + * Texas Instruments Incorporated, <www.ti.com> + * + * Author: Mugunthan V N mugunthanvnm@ti.com + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <dm.h> +#include <dm/uclass-internal.h> +#include <dm/device-internal.h> +#include <errno.h> +#include <scsi.h> + +DECLARE_GLOBAL_DATA_PTR; + +/* + * struct mmc_uclass_priv - Holds information about a device used by the uclass + */ +struct sata_uclass_priv { + struct block_dev_desc_t *block_dev; +}; + +int scsi_get_device(int index, struct udevice **devp) +{ + struct udevice *dev; + int ret; + + ret = uclass_find_device(UCLASS_SATA, index, &dev); + if (ret || !dev) { + printf("%d device not found\n", index); + return ret; + } + + ret = device_probe(dev); + if (ret) { + error("device probe error\n"); + return ret; + } + + *devp = dev; + + return ret; +} + +void scsi_init(void) +{ + struct udevice *dev; + int ret; + + ret = scsi_get_device(0, &dev); + if (ret || !dev) { + error("scsi device not found\n"); + return; + } + + scsi_scan(1); +} + +UCLASS_DRIVER(sata) = { + .id = UCLASS_SATA, + .name = "sata", + .flags = DM_UC_FLAG_SEQ_ALIAS, + .per_device_auto_alloc_size = sizeof(struct sata_uclass_priv), +}; diff --git a/include/dm/uclass-id.h b/include/dm/uclass-id.h index 27fa0b6..80977ca 100644 --- a/include/dm/uclass-id.h +++ b/include/dm/uclass-id.h @@ -55,6 +55,7 @@ enum uclass_id { UCLASS_RESET, /* Reset device */ UCLASS_REMOTEPROC, /* Remote Processor device */ UCLASS_RTC, /* Real time clock device */ + UCLASS_SATA, /* SATA devices */ UCLASS_SERIAL, /* Serial UART */ UCLASS_SPI, /* SPI bus */ UCLASS_SPI_FLASH, /* SPI flash */