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bus: fsl-mc: add api to retrieve mc version

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Add a new api that returns Management Complex firmware version
and make the required structure public. The api's first user will be
the caam driver for setting prediction resistance bits.

Signed-off-by: Andrei Botila <andrei.botila@nxp.com>
Acked-by: Laurentiu Tudor <laurentiu.tudor@nxp.com>
Reviewed-by: Horia Geantă <horia.geanta@nxp.com>
Cc: Chris Healy <cphealy@gmail.com>
Cc: Lucas Stach <l.stach@pengutronix.de>
Cc: Horia Geantă <horia.geanta@nxp.com>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: Iuliana Prodan <iuliana.prodan@nxp.com>
Cc: linux-crypto@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: linux-imx@nxp.com
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Andrei Botila 2020-03-19 09:12:31 -07:00 committed by Herbert Xu
parent 551ce72a78
commit 0544cb75bd
2 changed files with 33 additions and 16 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

33
drivers/bus/fsl-mc/fsl-mc-bus.c
View File

@ -26,6 +26,8 @@
*/
#define FSL_MC_DEFAULT_DMA_MASK (~0ULL)
static struct fsl_mc_version mc_version;
/**
* struct fsl_mc - Private data of a "fsl,qoriq-mc" platform device
* @root_mc_bus_dev: fsl-mc device representing the root DPRC
@ -54,20 +56,6 @@ struct fsl_mc_addr_translation_range {
phys_addr_t start_phys_addr;
};
/**
* struct mc_version
* @major: Major version number: incremented on API compatibility changes
* @minor: Minor version number: incremented on API additions (that are
* backward compatible); reset when major version is incremented
* @revision: Internal revision number: incremented on implementation changes
* and/or bug fixes that have no impact on API
*/
struct mc_version {
u32 major;
u32 minor;
u32 revision;
};
/**
* fsl_mc_bus_match - device to driver matching callback
* @dev: the fsl-mc device to match against
@ -338,7 +326,7 @@ EXPORT_SYMBOL_GPL(fsl_mc_driver_unregister);
*/
static int mc_get_version(struct fsl_mc_io *mc_io,
u32 cmd_flags,
struct mc_version *mc_ver_info)
struct fsl_mc_version *mc_ver_info)
{
struct fsl_mc_command cmd = { 0 };
struct dpmng_rsp_get_version *rsp_params;
@ -363,6 +351,20 @@ static int mc_get_version(struct fsl_mc_io *mc_io,
return 0;
}
/**
* fsl_mc_get_version - function to retrieve the MC f/w version information
*
* Return: mc version when called after fsl-mc-bus probe; NULL otherwise.
*/
struct fsl_mc_version *fsl_mc_get_version(void)
{
if (mc_version.major)
return &mc_version;
return NULL;
}
EXPORT_SYMBOL_GPL(fsl_mc_get_version);
/**
* fsl_mc_get_root_dprc - function to traverse to the root dprc
*/
@ -862,7 +864,6 @@ static int fsl_mc_bus_probe(struct platform_device *pdev)
int container_id;
phys_addr_t mc_portal_phys_addr;
u32 mc_portal_size;
struct mc_version mc_version;
struct resource res;
mc = devm_kzalloc(&pdev->dev, sizeof(*mc), GFP_KERNEL);

16
include/linux/fsl/mc.h
View File

@ -381,6 +381,22 @@ int __must_check __fsl_mc_driver_register(struct fsl_mc_driver *fsl_mc_driver,
void fsl_mc_driver_unregister(struct fsl_mc_driver *driver);
/**
* struct fsl_mc_version
* @major: Major version number: incremented on API compatibility changes
* @minor: Minor version number: incremented on API additions (that are
* backward compatible); reset when major version is incremented
* @revision: Internal revision number: incremented on implementation changes
* and/or bug fixes that have no impact on API
*/
struct fsl_mc_version {
u32 major;
u32 minor;
u32 revision;
};
struct fsl_mc_version *fsl_mc_get_version(void);
int __must_check fsl_mc_portal_allocate(struct fsl_mc_device *mc_dev,
u16 mc_io_flags,
struct fsl_mc_io **new_mc_io);