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greybus: interface: clean up ES3-bootroom-quirk handling

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Clean up handling of the ES3-bootrom quirks by adding an interface
quirk-flags field that is set appropriately when we detect that the ES3
bootrom is running.

Note that we need to reserve the DME_DIS_UNIPRO_BOOT_STARTED and
DME_DIS_FALLBACK_UNIPRO_BOOT_STARTED status values for the ES3 bootrom,
which does not support any CPort features (unlike later boot stages).
Add a BOOTROM infix to the defines to make this more clear.

Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
This commit is contained in:
Johan Hovold 2016-03-29 18:56:03 -04:00 committed by Greg Kroah-Hartman
parent 133e366bbe
commit ec199ccdd2
5 changed files with 29 additions and 15 deletions
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7
drivers/staging/greybus/connection.c
View File

@ -337,9 +337,12 @@ gb_connection_svc_connection_create(struct gb_connection *connection)
intf = connection->intf;
/* The ES2/ES3 bootrom requires E2EFC, CSD and CSV to be disabled. */
/*
* Enable either E2EFC or CSD, unless the interface does not support
* any CPort features.
*/
cport_flags = GB_SVC_CPORT_FLAG_CSV_N;
if (intf->boot_over_unipro) {
if (intf->quirks & GB_INTERFACE_QUIRK_NO_CPORT_FEATURES) {
cport_flags |= GB_SVC_CPORT_FLAG_CSD_N;
} else if (gb_connection_e2efc_enabled(connection)) {
cport_flags |= GB_SVC_CPORT_FLAG_CSD_N |

3
drivers/staging/greybus/control.c
View File

@ -155,8 +155,7 @@ int gb_control_get_interface_version_operation(struct gb_interface *intf)
struct gb_connection *connection = intf->control->connection;
int ret;
/* The ES3 bootrom fails to boot if this request it sent to it */
if (intf->boot_over_unipro)
if (intf->quirks & GB_INTERFACE_QUIRK_NO_INTERFACE_VERSION)
return 0;
ret = gb_operation_sync(connection, GB_CONTROL_TYPE_INTERFACE_VERSION,

10
drivers/staging/greybus/greybus_protocols.h
View File

@ -894,11 +894,11 @@ struct gb_svc_dme_peer_set_response {
#define DME_ATTR_ES3_INIT_STATUS 0x6101
/* Return value from init-status attributes listed above */
#define DME_DIS_SPI_BOOT_STARTED 0x02
#define DME_DIS_TRUSTED_SPI_BOOT_FINISHED 0x03
#define DME_DIS_UNTRUSTED_SPI_BOOT_FINISHED 0x04
#define DME_DIS_UNIPRO_BOOT_STARTED 0x06
#define DME_DIS_FALLBACK_UNIPRO_BOOT_STARTED 0x09
#define DME_DIS_SPI_BOOT_STARTED 0x02
#define DME_DIS_TRUSTED_SPI_BOOT_FINISHED 0x03
#define DME_DIS_UNTRUSTED_SPI_BOOT_FINISHED 0x04
#define DME_DIS_BOOTROM_UNIPRO_BOOT_STARTED 0x06
#define DME_DIS_BOOTROM_FALLBACK_UNIPRO_BOOT_STARTED 0x09
struct gb_svc_route_create_request {
__u8 intf1_id;

17
drivers/staging/greybus/interface.c
View File

@ -55,7 +55,7 @@ static int gb_interface_read_and_clear_init_status(struct gb_interface *intf)
}
/*
* Check if the interface needs to boot over UniPro.
* Extract the init status.
*
* For ES2: We need to check lowest 8 bits of 'value'.
* For ES3: We need to check highest 8 bits out of 32 of 'value'.
@ -67,9 +67,18 @@ static int gb_interface_read_and_clear_init_status(struct gb_interface *intf)
else
init_status = value >> 24;
if (init_status == DME_DIS_UNIPRO_BOOT_STARTED ||
init_status == DME_DIS_FALLBACK_UNIPRO_BOOT_STARTED)
intf->boot_over_unipro = true;
/*
* Check if the interface is executing the quirky ES3 bootrom that
* requires E2EFC, CSD and CSV to be disabled and that does not
* support the interface-version request.
*/
switch (init_status) {
case DME_DIS_BOOTROM_UNIPRO_BOOT_STARTED:
case DME_DIS_BOOTROM_FALLBACK_UNIPRO_BOOT_STARTED:
intf->quirks |= GB_INTERFACE_QUIRK_NO_CPORT_FEATURES;
intf->quirks |= GB_INTERFACE_QUIRK_NO_INTERFACE_VERSION;
break;
}
/* Clear the init status. */
return gb_svc_dme_peer_set(hd->svc, intf->interface_id, attr,

7
drivers/staging/greybus/interface.h
View File

@ -10,6 +10,9 @@
#ifndef __INTERFACE_H
#define __INTERFACE_H
#define GB_INTERFACE_QUIRK_NO_CPORT_FEATURES BIT(0)
#define GB_INTERFACE_QUIRK_NO_INTERFACE_VERSION BIT(1)
struct gb_interface {
struct device dev;
struct gb_control *control;
@ -36,8 +39,8 @@ struct gb_interface {
struct gb_host_device *hd;
/* The interface needs to boot over unipro */
bool boot_over_unipro;
unsigned long quirks;
bool disconnected;
};
#define to_gb_interface(d) container_of(d, struct gb_interface, dev)