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dm: Add support for scsi/sata based devices

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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>
This commit is contained in:
Michal Simek
2016-09-08 15:06:45 +02:00
parent 720ba46e71
commit e8a016b537
11 changed files with 165 additions and 13 deletions
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include/ahci.h
+1 -1
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@@ -145,7 +145,7 @@ struct ahci_ioports {
};
struct ahci_probe_ent {
#ifdef CONFIG_DM_PCI
#if defined(CONFIG_DM_PCI) || defined(CONFIG_DM_SCSI)
struct udevice *dev;
#else
pci_dev_t dev;
include/dm/uclass-id.h
+1
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@@ -66,6 +66,7 @@ enum uclass_id {
UCLASS_REMOTEPROC, /* Remote Processor device */
UCLASS_RESET, /* Reset controller device */
UCLASS_RTC, /* Real time clock device */
UCLASS_SCSI, /* SCSI device */
UCLASS_SERIAL, /* Serial UART */
UCLASS_SPI, /* SPI bus */
UCLASS_SPMI, /* System Power Management Interface bus */
include/sata.h
+2
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@@ -2,6 +2,7 @@
#define __SATA_H__
#include <part.h>
#if !defined(CONFIG_DM_SCSI)
int init_sata(int dev);
int reset_sata(int dev);
int scan_sata(int dev);
@@ -15,5 +16,6 @@ int __sata_stop(void);
int sata_port_status(int dev, int port);
extern struct blk_desc sata_dev_desc[];
#endif
#endif
include/scsi.h
+19 -1
View File
@@ -166,8 +166,11 @@ typedef struct SCSI_cmd_block{
void scsi_print_error(ccb *pccb);
int scsi_exec(ccb *pccb);
void scsi_bus_reset(void);
#if !defined(CONFIG_DM_SCSI)
void scsi_low_level_init(int busdevfunc);
#else
void scsi_low_level_init(int busdevfunc, struct udevice *dev);
#endif
/***************************************************************************
* functions residing inside cmd_scsi.c
@@ -175,6 +178,21 @@ void scsi_low_level_init(int busdevfunc);
void scsi_init(void);
int scsi_scan(int mode);
#if defined(CONFIG_DM_SCSI)
/**
* struct scsi_platdata - stores information about SCSI controller
*
* @base: Controller base address
* @max_lun: Maximum number of logical units
* @max_id: Maximum number of target ids
*/
struct scsi_platdata {
unsigned long base;
unsigned long max_lun;
unsigned long max_id;
};
#endif
#define SCSI_IDENTIFY 0xC0 /* not used */
/* Hardware errors */