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staging: mmal-vchiq: Allocate and free components as required
The existing code assumed that there would only ever be 4 components, and never freed the entries once used. Allow arbitrary creation and destruction of components. Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org> Signed-off-by: Jacopo Mondi <jacopo@jmondi.org> Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de> Link: https://lore.kernel.org/r/20200623164235.29566-3-nsaenzjulienne@suse.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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2 changed files with 20 additions and 10 deletions
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@ -32,8 +32,11 @@
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#define USE_VCHIQ_ARM
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#include "interface/vchi/vchi.h"
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/* maximum number of components supported */
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#define VCHIQ_MMAL_MAX_COMPONENTS 4
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/*
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* maximum number of components supported.
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* This matches the maximum permitted by default on the VPU
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*/
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#define VCHIQ_MMAL_MAX_COMPONENTS 64
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/*#define FULL_MSG_DUMP 1*/
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@ -168,8 +171,6 @@ struct vchiq_mmal_instance {
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/* protect accesses to context_map */
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struct mutex context_map_lock;
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/* component to use next */
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int component_idx;
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struct vchiq_mmal_component component[VCHIQ_MMAL_MAX_COMPONENTS];
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/* ordered workqueue to process all bulk operations */
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@ -1626,18 +1627,24 @@ int vchiq_mmal_component_init(struct vchiq_mmal_instance *instance,
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{
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int ret;
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int idx; /* port index */
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struct vchiq_mmal_component *component;
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struct vchiq_mmal_component *component = NULL;
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if (mutex_lock_interruptible(&instance->vchiq_mutex))
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return -EINTR;
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if (instance->component_idx == VCHIQ_MMAL_MAX_COMPONENTS) {
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for (idx = 0; idx < VCHIQ_MMAL_MAX_COMPONENTS; idx++) {
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if (!instance->component[idx].in_use) {
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component = &instance->component[idx];
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component->in_use = 1;
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break;
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}
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}
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if (!component) {
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ret = -EINVAL; /* todo is this correct error? */
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goto unlock;
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}
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component = &instance->component[instance->component_idx];
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ret = create_component(instance, component, name);
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if (ret < 0) {
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pr_err("%s: failed to create component %d (Not enough GPU mem?)\n",
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@ -1688,8 +1695,6 @@ int vchiq_mmal_component_init(struct vchiq_mmal_instance *instance,
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goto release_component;
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}
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instance->component_idx++;
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*component_out = component;
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mutex_unlock(&instance->vchiq_mutex);
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@ -1699,6 +1704,8 @@ int vchiq_mmal_component_init(struct vchiq_mmal_instance *instance,
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release_component:
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destroy_component(instance, component);
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unlock:
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if (component)
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component->in_use = 0;
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mutex_unlock(&instance->vchiq_mutex);
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return ret;
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@ -1721,6 +1728,8 @@ int vchiq_mmal_component_finalise(struct vchiq_mmal_instance *instance,
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ret = destroy_component(instance, component);
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component->in_use = 0;
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mutex_unlock(&instance->vchiq_mutex);
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return ret;
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@ -82,6 +82,7 @@ struct vchiq_mmal_port {
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};
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struct vchiq_mmal_component {
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u32 in_use:1;
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u32 enabled:1;
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u32 handle; /* VideoCore handle for component */
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u32 inputs; /* Number of input ports */
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