diff options
| author | Andrei Botila <andrei.botila@nxp.com> | 2020-03-19 09:12:31 -0700 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2020-03-30 11:50:49 +1100 |
| commit | 0544cb75bd7df357c1758b760ecc7709125c139a (patch) | |
| tree | 83b3fc194b1f4b804bda2d3d03b487509f45b1c1 /drivers/bus | |
| parent | 551ce72a78e2c5493fa987410437e54b5f3fdd34 (diff) | |
| download | linux-0544cb75bd7df357c1758b760ecc7709125c139a.tar.bz2 | |
bus: fsl-mc: add api to retrieve mc version
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>
Diffstat (limited to 'drivers/bus')
| -rw-r--r-- | drivers/bus/fsl-mc/fsl-mc-bus.c | 33 |
1 files changed, 17 insertions, 16 deletions
diff --git a/drivers/bus/fsl-mc/fsl-mc-bus.c b/drivers/bus/fsl-mc/fsl-mc-bus.c index c78d10ea641f..40526da5c6a6 100644 --- a/drivers/bus/fsl-mc/fsl-mc-bus.c +++ b/drivers/bus/fsl-mc/fsl-mc-bus.c @@ -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 @@ -55,20 +57,6 @@ struct fsl_mc_addr_translation_range { }; /** - * 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 * @drv: the device driver to search for matching fsl-mc object type @@ -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; @@ -364,6 +352,20 @@ static int mc_get_version(struct fsl_mc_io *mc_io, } /** + * 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 */ static void fsl_mc_get_root_dprc(struct device *dev, @@ -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); |