diff options
Diffstat (limited to 'drivers/staging/fsl-mc/bus/fsl-mc-bus.c')
| -rw-r--r-- | drivers/staging/fsl-mc/bus/fsl-mc-bus.c | 91 |
1 files changed, 66 insertions, 25 deletions
diff --git a/drivers/staging/fsl-mc/bus/fsl-mc-bus.c b/drivers/staging/fsl-mc/bus/fsl-mc-bus.c index 3be5f25ff113..19606e8d25dd 100644 --- a/drivers/staging/fsl-mc/bus/fsl-mc-bus.c +++ b/drivers/staging/fsl-mc/bus/fsl-mc-bus.c @@ -20,12 +20,10 @@ #include <linux/bitops.h> #include <linux/msi.h> #include <linux/dma-mapping.h> -#include "../include/mc-bus.h" -#include "../include/dpmng.h" -#include "../include/mc-sys.h" #include "fsl-mc-private.h" #include "dprc-cmd.h" +#include "dpmng-cmd.h" /** * Default DMA mask for devices on a fsl-mc bus @@ -61,6 +59,20 @@ 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 @@ -82,7 +94,7 @@ static int fsl_mc_bus_match(struct device *dev, struct device_driver *drv) * If the object is not 'plugged' don't match. * Only exception is the root DPRC, which is a special case. */ - if ((mc_dev->obj_desc.state & DPRC_OBJ_STATE_PLUGGED) == 0 && + if ((mc_dev->obj_desc.state & FSL_MC_OBJ_STATE_PLUGGED) == 0 && !fsl_mc_is_root_dprc(&mc_dev->dev)) goto out; @@ -239,10 +251,46 @@ void fsl_mc_driver_unregister(struct fsl_mc_driver *mc_driver) EXPORT_SYMBOL_GPL(fsl_mc_driver_unregister); /** + * mc_get_version() - Retrieves the Management Complex firmware + * version information + * @mc_io: Pointer to opaque I/O object + * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_' + * @mc_ver_info: Returned version information structure + * + * Return: '0' on Success; Error code otherwise. + */ +static int mc_get_version(struct fsl_mc_io *mc_io, + u32 cmd_flags, + struct mc_version *mc_ver_info) +{ + struct mc_command cmd = { 0 }; + struct dpmng_rsp_get_version *rsp_params; + int err; + + /* prepare command */ + cmd.header = mc_encode_cmd_header(DPMNG_CMDID_GET_VERSION, + cmd_flags, + 0); + + /* send command to mc*/ + err = mc_send_command(mc_io, &cmd); + if (err) + return err; + + /* retrieve response parameters */ + rsp_params = (struct dpmng_rsp_get_version *)cmd.params; + mc_ver_info->revision = le32_to_cpu(rsp_params->revision); + mc_ver_info->major = le32_to_cpu(rsp_params->version_major); + mc_ver_info->minor = le32_to_cpu(rsp_params->version_minor); + + return 0; +} + +/** * fsl_mc_get_root_dprc - function to traverse to the root dprc */ -void fsl_mc_get_root_dprc(struct device *dev, - struct device **root_dprc_dev) +static void fsl_mc_get_root_dprc(struct device *dev, + struct device **root_dprc_dev) { if (WARN_ON(!dev)) { *root_dprc_dev = NULL; @@ -254,7 +302,6 @@ void fsl_mc_get_root_dprc(struct device *dev, *root_dprc_dev = (*root_dprc_dev)->parent; } } -EXPORT_SYMBOL_GPL(fsl_mc_get_root_dprc); static int get_dprc_attr(struct fsl_mc_io *mc_io, int container_id, struct dprc_attributes *attr) @@ -339,7 +386,7 @@ static int fsl_mc_device_get_mmio_regions(struct fsl_mc_device *mc_dev, int i; int error; struct resource *regions; - struct dprc_obj_desc *obj_desc = &mc_dev->obj_desc; + struct fsl_mc_obj_desc *obj_desc = &mc_dev->obj_desc; struct device *parent_dev = mc_dev->dev.parent; enum dprc_region_type mc_region_type; @@ -420,15 +467,11 @@ bool fsl_mc_is_root_dprc(struct device *dev) static void fsl_mc_device_release(struct device *dev) { struct fsl_mc_device *mc_dev = to_fsl_mc_device(dev); - struct fsl_mc_bus *mc_bus = NULL; kfree(mc_dev->regions); if (strcmp(mc_dev->obj_desc.type, "dprc") == 0) - mc_bus = to_fsl_mc_bus(mc_dev); - - if (mc_bus) - kfree(mc_bus); + kfree(to_fsl_mc_bus(mc_dev)); else kfree(mc_dev); } @@ -436,7 +479,7 @@ static void fsl_mc_device_release(struct device *dev) /** * Add a newly discovered fsl-mc device to be visible in Linux */ -int fsl_mc_device_add(struct dprc_obj_desc *obj_desc, +int fsl_mc_device_add(struct fsl_mc_obj_desc *obj_desc, struct fsl_mc_io *mc_io, struct device *parent_dev, struct fsl_mc_device **new_mc_dev) @@ -538,7 +581,7 @@ int fsl_mc_device_add(struct dprc_obj_desc *obj_desc, } /* Objects are coherent, unless 'no shareability' flag set. */ - if (!(obj_desc->flags & DPRC_OBJ_FLAG_NO_MEM_SHAREABILITY)) + if (!(obj_desc->flags & FSL_MC_OBJ_FLAG_NO_MEM_SHAREABILITY)) arch_setup_dma_ops(&mc_dev->dev, 0, 0, NULL, true); /* @@ -559,10 +602,8 @@ int fsl_mc_device_add(struct dprc_obj_desc *obj_desc, error_cleanup_dev: kfree(mc_dev->regions); - if (mc_bus) - kfree(mc_bus); - else - kfree(mc_dev); + kfree(mc_bus); + kfree(mc_dev); return error; } @@ -644,10 +685,10 @@ static int get_mc_addr_translation_ranges(struct device *dev, const __be32 *cell; ret = parse_mc_ranges(dev, - &paddr_cells, - &mc_addr_cells, - &mc_size_cells, - &ranges_start); + &paddr_cells, + &mc_addr_cells, + &mc_size_cells, + &ranges_start); if (ret < 0) return ret; @@ -693,7 +734,7 @@ static int get_mc_addr_translation_ranges(struct device *dev, */ static int fsl_mc_bus_probe(struct platform_device *pdev) { - struct dprc_obj_desc obj_desc; + struct fsl_mc_obj_desc obj_desc; int error; struct fsl_mc *mc; struct fsl_mc_device *mc_bus_dev = NULL; @@ -752,7 +793,7 @@ static int fsl_mc_bus_probe(struct platform_device *pdev) goto error_cleanup_mc_io; } - memset(&obj_desc, 0, sizeof(struct dprc_obj_desc)); + memset(&obj_desc, 0, sizeof(struct fsl_mc_obj_desc)); error = dprc_get_api_version(mc_io, 0, &obj_desc.ver_major, &obj_desc.ver_minor); |