| /* Copyright (c) 2014-2016, The Linux Foundation. All rights reserved. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 and |
| * only version 2 as published by the Free Software Foundation. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| */ |
| #include <linux/kernel.h> |
| #include <linux/init.h> |
| #include <linux/list.h> |
| #include <linux/module.h> |
| #include <linux/slab.h> |
| #include <linux/rtmutex.h> |
| #include <linux/clk.h> |
| #include <linux/msm-bus.h> |
| #include "msm_bus_core.h" |
| #include "msm_bus_adhoc.h" |
| #include <trace/events/trace_msm_bus.h> |
| |
| #define NUM_CL_HANDLES 50 |
| #define NUM_LNODES 3 |
| #define MAX_STR_CL 50 |
| |
| struct bus_search_type { |
| struct list_head link; |
| struct list_head node_list; |
| }; |
| |
| struct handle_type { |
| int num_entries; |
| struct msm_bus_client **cl_list; |
| }; |
| |
| static struct handle_type handle_list; |
| static LIST_HEAD(input_list); |
| static LIST_HEAD(apply_list); |
| static LIST_HEAD(commit_list); |
| |
| DEFINE_RT_MUTEX(msm_bus_adhoc_lock); |
| |
| static bool chk_bl_list(struct list_head *black_list, unsigned int id) |
| { |
| struct msm_bus_node_device_type *bus_node = NULL; |
| |
| list_for_each_entry(bus_node, black_list, link) { |
| if (bus_node->node_info->id == id) |
| return true; |
| } |
| return false; |
| } |
| |
| static void copy_remaining_nodes(struct list_head *edge_list, struct list_head |
| *traverse_list, struct list_head *route_list) |
| { |
| struct bus_search_type *search_node; |
| |
| if (list_empty(edge_list) && list_empty(traverse_list)) |
| return; |
| |
| search_node = kzalloc(sizeof(struct bus_search_type), GFP_KERNEL); |
| INIT_LIST_HEAD(&search_node->node_list); |
| list_splice_init(edge_list, traverse_list); |
| list_splice_init(traverse_list, &search_node->node_list); |
| list_add_tail(&search_node->link, route_list); |
| } |
| |
| /* |
| * Duplicate instantiaion from msm_bus_arb.c. Todo there needs to be a |
| * "util" file for these common func/macros. |
| * |
| */ |
| uint64_t msm_bus_div64(unsigned int w, uint64_t bw) |
| { |
| uint64_t *b = &bw; |
| |
| if ((bw > 0) && (bw < w)) |
| return 1; |
| |
| switch (w) { |
| case 0: |
| WARN(1, "AXI: Divide by 0 attempted\n"); |
| case 1: return bw; |
| case 2: return (bw >> 1); |
| case 4: return (bw >> 2); |
| case 8: return (bw >> 3); |
| case 16: return (bw >> 4); |
| case 32: return (bw >> 5); |
| } |
| |
| do_div(*b, w); |
| return *b; |
| } |
| |
| int msm_bus_device_match_adhoc(struct device *dev, void *id) |
| { |
| int ret = 0; |
| struct msm_bus_node_device_type *bnode = to_msm_bus_node(dev); |
| |
| if (bnode) |
| ret = (bnode->node_info->id == *(unsigned int *)id); |
| else |
| ret = 0; |
| |
| return ret; |
| } |
| |
| static int gen_lnode(struct device *dev, |
| int next_hop, int prev_idx, const char *cl_name) |
| { |
| struct link_node *lnode; |
| struct msm_bus_node_device_type *cur_dev = NULL; |
| int lnode_idx = -1; |
| |
| if (!dev) |
| goto exit_gen_lnode; |
| |
| cur_dev = to_msm_bus_node(dev); |
| if (!cur_dev) { |
| MSM_BUS_ERR("%s: Null device ptr", __func__); |
| goto exit_gen_lnode; |
| } |
| |
| if (!cur_dev->num_lnodes) { |
| cur_dev->lnode_list = devm_kzalloc(dev, |
| sizeof(struct link_node) * NUM_LNODES, |
| GFP_KERNEL); |
| if (!cur_dev->lnode_list) |
| goto exit_gen_lnode; |
| |
| lnode = cur_dev->lnode_list; |
| cur_dev->num_lnodes = NUM_LNODES; |
| lnode_idx = 0; |
| } else { |
| int i; |
| |
| for (i = 0; i < cur_dev->num_lnodes; i++) { |
| if (!cur_dev->lnode_list[i].in_use) |
| break; |
| } |
| |
| if (i < cur_dev->num_lnodes) { |
| lnode = &cur_dev->lnode_list[i]; |
| lnode_idx = i; |
| } else { |
| struct link_node *realloc_list; |
| size_t cur_size = sizeof(struct link_node) * |
| cur_dev->num_lnodes; |
| |
| cur_dev->num_lnodes += NUM_LNODES; |
| realloc_list = msm_bus_realloc_devmem( |
| dev, |
| cur_dev->lnode_list, |
| cur_size, |
| sizeof(struct link_node) * |
| cur_dev->num_lnodes, GFP_KERNEL); |
| |
| if (!realloc_list) |
| goto exit_gen_lnode; |
| |
| cur_dev->lnode_list = realloc_list; |
| lnode = &cur_dev->lnode_list[i]; |
| lnode_idx = i; |
| } |
| } |
| |
| lnode->in_use = 1; |
| lnode->cl_name = cl_name; |
| if (next_hop == cur_dev->node_info->id) { |
| lnode->next = -1; |
| lnode->next_dev = NULL; |
| } else { |
| lnode->next = prev_idx; |
| lnode->next_dev = bus_find_device(&msm_bus_type, NULL, |
| (void *) &next_hop, |
| msm_bus_device_match_adhoc); |
| } |
| |
| memset(lnode->lnode_ib, 0, sizeof(uint64_t) * NUM_CTX); |
| memset(lnode->lnode_ab, 0, sizeof(uint64_t) * NUM_CTX); |
| |
| exit_gen_lnode: |
| return lnode_idx; |
| } |
| |
| static int remove_lnode(struct msm_bus_node_device_type *cur_dev, |
| int lnode_idx) |
| { |
| int ret = 0; |
| |
| if (!cur_dev) { |
| MSM_BUS_ERR("%s: Null device ptr", __func__); |
| ret = -ENODEV; |
| goto exit_remove_lnode; |
| } |
| |
| if (lnode_idx != -1) { |
| if (!cur_dev->num_lnodes || |
| (lnode_idx > (cur_dev->num_lnodes - 1))) { |
| MSM_BUS_ERR("%s: Invalid Idx %d, num_lnodes %d", |
| __func__, lnode_idx, cur_dev->num_lnodes); |
| ret = -ENODEV; |
| goto exit_remove_lnode; |
| } |
| |
| cur_dev->lnode_list[lnode_idx].next = -1; |
| cur_dev->lnode_list[lnode_idx].next_dev = NULL; |
| cur_dev->lnode_list[lnode_idx].in_use = 0; |
| cur_dev->lnode_list[lnode_idx].cl_name = NULL; |
| } |
| |
| exit_remove_lnode: |
| return ret; |
| } |
| |
| static int prune_path(struct list_head *route_list, int dest, int src, |
| struct list_head *black_list, int found, |
| const char *cl_name) |
| { |
| struct bus_search_type *search_node, *temp_search_node; |
| struct msm_bus_node_device_type *bus_node; |
| struct list_head *bl_list; |
| struct list_head *temp_bl_list; |
| int search_dev_id = dest; |
| struct device *dest_dev = bus_find_device(&msm_bus_type, NULL, |
| (void *) &dest, |
| msm_bus_device_match_adhoc); |
| int lnode_hop = -1; |
| |
| if (!found) |
| goto reset_links; |
| |
| if (!dest_dev) { |
| MSM_BUS_ERR("%s: Can't find dest dev %d", __func__, dest); |
| goto exit_prune_path; |
| } |
| |
| lnode_hop = gen_lnode(dest_dev, search_dev_id, lnode_hop, cl_name); |
| |
| list_for_each_entry_reverse(search_node, route_list, link) { |
| list_for_each_entry(bus_node, &search_node->node_list, link) { |
| unsigned int i; |
| |
| for (i = 0; i < bus_node->node_info->num_connections; |
| i++) { |
| if (bus_node->node_info->connections[i] == |
| search_dev_id) { |
| dest_dev = bus_find_device( |
| &msm_bus_type, |
| NULL, |
| (void *) |
| &bus_node->node_info-> |
| id, |
| msm_bus_device_match_adhoc); |
| |
| if (!dest_dev) { |
| lnode_hop = -1; |
| goto reset_links; |
| } |
| |
| lnode_hop = gen_lnode(dest_dev, |
| search_dev_id, |
| lnode_hop, cl_name); |
| search_dev_id = |
| bus_node->node_info->id; |
| break; |
| } |
| } |
| } |
| } |
| reset_links: |
| list_for_each_entry_safe(search_node, temp_search_node, route_list, |
| link) { |
| list_for_each_entry(bus_node, &search_node->node_list, |
| link) |
| bus_node->node_info->is_traversed = false; |
| |
| list_del(&search_node->link); |
| kfree(search_node); |
| } |
| |
| list_for_each_safe(bl_list, temp_bl_list, black_list) |
| list_del(bl_list); |
| |
| exit_prune_path: |
| return lnode_hop; |
| } |
| |
| static void setup_bl_list(struct msm_bus_node_device_type *node, |
| struct list_head *black_list) |
| { |
| unsigned int i; |
| |
| for (i = 0; i < node->node_info->num_blist; i++) { |
| struct msm_bus_node_device_type *bdev; |
| |
| bdev = to_msm_bus_node(node->node_info->black_connections[i]); |
| list_add_tail(&bdev->link, black_list); |
| } |
| } |
| |
| static int getpath(struct device *src_dev, int dest, const char *cl_name) |
| { |
| struct list_head traverse_list; |
| struct list_head edge_list; |
| struct list_head route_list; |
| struct list_head black_list; |
| struct msm_bus_node_device_type *src_node; |
| struct bus_search_type *search_node; |
| int found = 0; |
| int depth_index = 0; |
| int first_hop = -1; |
| int src; |
| |
| INIT_LIST_HEAD(&traverse_list); |
| INIT_LIST_HEAD(&edge_list); |
| INIT_LIST_HEAD(&route_list); |
| INIT_LIST_HEAD(&black_list); |
| |
| if (!src_dev) { |
| MSM_BUS_ERR("%s: Cannot locate src dev ", __func__); |
| goto exit_getpath; |
| } |
| |
| src_node = to_msm_bus_node(src_dev); |
| if (!src_node) { |
| MSM_BUS_ERR("%s:Fatal, Source node not found", __func__); |
| goto exit_getpath; |
| } |
| src = src_node->node_info->id; |
| list_add_tail(&src_node->link, &traverse_list); |
| |
| while ((!found && !list_empty(&traverse_list))) { |
| struct msm_bus_node_device_type *bus_node = NULL; |
| /* Locate dest_id in the traverse list */ |
| list_for_each_entry(bus_node, &traverse_list, link) { |
| if (bus_node->node_info->id == dest) { |
| found = 1; |
| break; |
| } |
| } |
| |
| if (!found) { |
| unsigned int i; |
| /* Setup the new edge list */ |
| list_for_each_entry(bus_node, &traverse_list, link) { |
| /* Setup list of black-listed nodes */ |
| setup_bl_list(bus_node, &black_list); |
| |
| for (i = 0; i < bus_node->node_info-> |
| num_connections; i++) { |
| bool skip; |
| struct msm_bus_node_device_type |
| *node_conn; |
| node_conn = |
| to_msm_bus_node(bus_node->node_info-> |
| dev_connections[i]); |
| if (node_conn->node_info-> |
| is_traversed) { |
| MSM_BUS_ERR("Circ Path %d\n", |
| node_conn->node_info->id); |
| goto reset_traversed; |
| } |
| skip = chk_bl_list(&black_list, |
| bus_node->node_info-> |
| connections[i]); |
| if (!skip) { |
| list_add_tail(&node_conn->link, |
| &edge_list); |
| node_conn->node_info-> |
| is_traversed = true; |
| } |
| } |
| } |
| |
| /* Keep tabs of the previous search list */ |
| search_node = kzalloc(sizeof(struct bus_search_type), |
| GFP_KERNEL); |
| INIT_LIST_HEAD(&search_node->node_list); |
| list_splice_init(&traverse_list, |
| &search_node->node_list); |
| /* Add the previous search list to a route list */ |
| list_add_tail(&search_node->link, &route_list); |
| /* Advancing the list depth */ |
| depth_index++; |
| list_splice_init(&edge_list, &traverse_list); |
| } |
| } |
| reset_traversed: |
| copy_remaining_nodes(&edge_list, &traverse_list, &route_list); |
| first_hop = prune_path(&route_list, dest, src, &black_list, found, |
| cl_name); |
| |
| exit_getpath: |
| return first_hop; |
| } |
| |
| static uint64_t scheme1_agg_scheme(struct msm_bus_node_device_type *bus_dev, |
| struct msm_bus_node_device_type *fab_dev, int ctx) |
| { |
| uint64_t max_ib; |
| uint64_t sum_ab; |
| uint64_t bw_max_hz; |
| uint32_t util_fact = 0; |
| uint32_t vrail_comp = 0; |
| struct node_util_levels_type *utils; |
| int i; |
| int num_util_levels; |
| |
| /* |
| * Account for Util factor and vrail comp. |
| * Util factor is picked according to the current sum(AB) for this |
| * node and for this context. |
| * Vrail comp is fixed for the entire performance range. |
| * They default to 100 if absent. |
| * |
| * The aggregated clock is computed as: |
| * Freq_hz = max((sum(ab) * util_fact)/num_chan, max(ib)/vrail_comp) |
| * / bus-width |
| */ |
| if (bus_dev->node_info->agg_params.num_util_levels) { |
| utils = bus_dev->node_info->agg_params.util_levels; |
| num_util_levels = |
| bus_dev->node_info->agg_params.num_util_levels; |
| } else { |
| utils = fab_dev->node_info->agg_params.util_levels; |
| num_util_levels = |
| fab_dev->node_info->agg_params.num_util_levels; |
| } |
| |
| sum_ab = bus_dev->node_bw[ctx].sum_ab; |
| max_ib = bus_dev->node_bw[ctx].max_ib; |
| |
| for (i = 0; i < num_util_levels; i++) { |
| if (sum_ab < utils[i].threshold) { |
| util_fact = utils[i].util_fact; |
| break; |
| } |
| } |
| if (i == num_util_levels) |
| util_fact = utils[(num_util_levels - 1)].util_fact; |
| |
| vrail_comp = bus_dev->node_info->agg_params.vrail_comp ? |
| bus_dev->node_info->agg_params.vrail_comp : |
| fab_dev->node_info->agg_params.vrail_comp; |
| |
| bus_dev->node_bw[ctx].vrail_used = vrail_comp; |
| bus_dev->node_bw[ctx].util_used = util_fact; |
| |
| if (util_fact && (util_fact != 100)) { |
| sum_ab *= util_fact; |
| sum_ab = msm_bus_div64(100, sum_ab); |
| } |
| |
| if (vrail_comp && (vrail_comp != 100)) { |
| max_ib *= 100; |
| max_ib = msm_bus_div64(vrail_comp, max_ib); |
| } |
| |
| /* Account for multiple channels if any */ |
| if (bus_dev->node_info->agg_params.num_aggports > 1) |
| sum_ab = msm_bus_div64( |
| bus_dev->node_info->agg_params.num_aggports, |
| sum_ab); |
| |
| if (!bus_dev->node_info->agg_params.buswidth) { |
| MSM_BUS_WARN("No bus width found for %d. Using default\n", |
| bus_dev->node_info->id); |
| bus_dev->node_info->agg_params.buswidth = 8; |
| } |
| |
| bw_max_hz = max(max_ib, sum_ab); |
| bw_max_hz = msm_bus_div64(bus_dev->node_info->agg_params.buswidth, |
| bw_max_hz); |
| |
| return bw_max_hz; |
| } |
| |
| static uint64_t legacy_agg_scheme(struct msm_bus_node_device_type *bus_dev, |
| struct msm_bus_node_device_type *fab_dev, int ctx) |
| { |
| uint64_t max_ib; |
| uint64_t sum_ab; |
| uint64_t bw_max_hz; |
| uint32_t util_fact = 0; |
| uint32_t vrail_comp = 0; |
| |
| /* |
| * Util_fact and vrail comp are obtained from fabric/Node's dts |
| * properties and are fixed for the entire performance range. |
| * They default to 100 if absent. |
| * |
| * The clock frequency is computed as: |
| * Freq_hz = max((sum(ab) * util_fact)/num_chan, max(ib)/vrail_comp) |
| * / bus-width |
| */ |
| util_fact = fab_dev->node_info->agg_params.util_levels[0].util_fact; |
| vrail_comp = fab_dev->node_info->agg_params.vrail_comp; |
| |
| if (bus_dev->node_info->agg_params.num_util_levels) |
| util_fact = |
| bus_dev->node_info->agg_params.util_levels[0].util_fact ? |
| bus_dev->node_info->agg_params.util_levels[0].util_fact : |
| util_fact; |
| |
| vrail_comp = bus_dev->node_info->agg_params.vrail_comp ? |
| bus_dev->node_info->agg_params.vrail_comp : |
| vrail_comp; |
| |
| bus_dev->node_bw[ctx].vrail_used = vrail_comp; |
| bus_dev->node_bw[ctx].util_used = util_fact; |
| sum_ab = bus_dev->node_bw[ctx].sum_ab; |
| max_ib = bus_dev->node_bw[ctx].max_ib; |
| |
| if (util_fact && (util_fact != 100)) { |
| sum_ab *= util_fact; |
| sum_ab = msm_bus_div64(100, sum_ab); |
| } |
| |
| if (vrail_comp && (vrail_comp != 100)) { |
| max_ib *= 100; |
| max_ib = msm_bus_div64(vrail_comp, max_ib); |
| } |
| |
| /* Account for multiple channels if any */ |
| if (bus_dev->node_info->agg_params.num_aggports > 1) |
| sum_ab = msm_bus_div64( |
| bus_dev->node_info->agg_params.num_aggports, |
| sum_ab); |
| |
| if (!bus_dev->node_info->agg_params.buswidth) { |
| MSM_BUS_WARN("No bus width found for %d. Using default\n", |
| bus_dev->node_info->id); |
| bus_dev->node_info->agg_params.buswidth = 8; |
| } |
| |
| bw_max_hz = max(max_ib, sum_ab); |
| bw_max_hz = msm_bus_div64(bus_dev->node_info->agg_params.buswidth, |
| bw_max_hz); |
| |
| return bw_max_hz; |
| } |
| |
| static uint64_t aggregate_bus_req(struct msm_bus_node_device_type *bus_dev, |
| int ctx) |
| { |
| uint64_t bw_hz = 0; |
| int i; |
| struct msm_bus_node_device_type *fab_dev = NULL; |
| uint32_t agg_scheme; |
| uint64_t max_ib = 0; |
| uint64_t sum_ab = 0; |
| |
| if (!bus_dev || !to_msm_bus_node(bus_dev->node_info->bus_device)) { |
| MSM_BUS_ERR("Bus node pointer is Invalid"); |
| goto exit_agg_bus_req; |
| } |
| |
| fab_dev = to_msm_bus_node(bus_dev->node_info->bus_device); |
| for (i = 0; i < bus_dev->num_lnodes; i++) { |
| max_ib = max(max_ib, bus_dev->lnode_list[i].lnode_ib[ctx]); |
| sum_ab += bus_dev->lnode_list[i].lnode_ab[ctx]; |
| } |
| |
| bus_dev->node_bw[ctx].sum_ab = sum_ab; |
| bus_dev->node_bw[ctx].max_ib = max_ib; |
| |
| if (bus_dev->node_info->agg_params.agg_scheme != AGG_SCHEME_NONE) |
| agg_scheme = bus_dev->node_info->agg_params.agg_scheme; |
| else |
| agg_scheme = fab_dev->node_info->agg_params.agg_scheme; |
| |
| switch (agg_scheme) { |
| case AGG_SCHEME_1: |
| bw_hz = scheme1_agg_scheme(bus_dev, fab_dev, ctx); |
| break; |
| case AGG_SCHEME_LEG: |
| bw_hz = legacy_agg_scheme(bus_dev, fab_dev, ctx); |
| break; |
| } |
| |
| exit_agg_bus_req: |
| return bw_hz; |
| } |
| |
| |
| static void del_inp_list(struct list_head *list) |
| { |
| struct rule_update_path_info *rule_node; |
| struct rule_update_path_info *rule_node_tmp; |
| |
| list_for_each_entry_safe(rule_node, rule_node_tmp, list, link) { |
| list_del(&rule_node->link); |
| rule_node->added = false; |
| } |
| } |
| |
| static void del_op_list(struct list_head *list) |
| { |
| struct rule_apply_rcm_info *rule; |
| struct rule_apply_rcm_info *rule_tmp; |
| |
| list_for_each_entry_safe(rule, rule_tmp, list, link) |
| list_del(&rule->link); |
| } |
| |
| static int msm_bus_apply_rules(struct list_head *list, bool after_clk_commit) |
| { |
| struct rule_apply_rcm_info *rule; |
| struct device *dev = NULL; |
| struct msm_bus_node_device_type *dev_info = NULL; |
| int ret = 0; |
| |
| list_for_each_entry(rule, list, link) { |
| if (!rule) |
| continue; |
| |
| if (rule && (rule->after_clk_commit != after_clk_commit)) |
| continue; |
| |
| dev = bus_find_device(&msm_bus_type, NULL, |
| (void *) &rule->id, |
| msm_bus_device_match_adhoc); |
| |
| if (!dev) { |
| MSM_BUS_ERR("Can't find dev node for %d", rule->id); |
| continue; |
| } |
| dev_info = to_msm_bus_node(dev); |
| |
| ret = msm_bus_enable_limiter(dev_info, rule->throttle, |
| rule->lim_bw); |
| if (ret) |
| MSM_BUS_ERR("Failed to set limiter for %d", rule->id); |
| } |
| |
| return ret; |
| } |
| |
| static void commit_data(void) |
| { |
| bool rules_registered = msm_rule_are_rules_registered(); |
| |
| if (rules_registered) { |
| msm_rules_update_path(&input_list, &apply_list); |
| msm_bus_apply_rules(&apply_list, false); |
| } |
| |
| msm_bus_commit_data(&commit_list); |
| |
| if (rules_registered) { |
| msm_bus_apply_rules(&apply_list, true); |
| del_inp_list(&input_list); |
| del_op_list(&apply_list); |
| } |
| INIT_LIST_HEAD(&input_list); |
| INIT_LIST_HEAD(&apply_list); |
| INIT_LIST_HEAD(&commit_list); |
| } |
| |
| static void add_node_to_clist(struct msm_bus_node_device_type *node) |
| { |
| struct msm_bus_node_device_type *node_parent = |
| to_msm_bus_node(node->node_info->bus_device); |
| |
| if (!node->dirty) { |
| list_add_tail(&node->link, &commit_list); |
| node->dirty = true; |
| } |
| |
| if (!node_parent->dirty) { |
| list_add_tail(&node_parent->link, &commit_list); |
| node_parent->dirty = true; |
| } |
| } |
| |
| static int update_path(struct device *src_dev, int dest, uint64_t act_req_ib, |
| uint64_t act_req_bw, uint64_t slp_req_ib, |
| uint64_t slp_req_bw, uint64_t cur_ib, uint64_t cur_bw, |
| int src_idx, int ctx) |
| { |
| struct device *next_dev = NULL; |
| struct link_node *lnode = NULL; |
| struct msm_bus_node_device_type *dev_info = NULL; |
| int curr_idx; |
| int ret = 0; |
| struct rule_update_path_info *rule_node; |
| bool rules_registered = msm_rule_are_rules_registered(); |
| |
| if (IS_ERR_OR_NULL(src_dev)) { |
| MSM_BUS_ERR("%s: No source device", __func__); |
| ret = -ENODEV; |
| goto exit_update_path; |
| } |
| |
| next_dev = src_dev; |
| |
| if (src_idx < 0) { |
| MSM_BUS_ERR("%s: Invalid lnode idx %d", __func__, src_idx); |
| ret = -ENXIO; |
| goto exit_update_path; |
| } |
| curr_idx = src_idx; |
| |
| while (next_dev) { |
| int i; |
| |
| dev_info = to_msm_bus_node(next_dev); |
| |
| if (curr_idx >= dev_info->num_lnodes) { |
| MSM_BUS_ERR("%s: Invalid lnode Idx %d num lnodes %d", |
| __func__, curr_idx, dev_info->num_lnodes); |
| ret = -ENXIO; |
| goto exit_update_path; |
| } |
| |
| lnode = &dev_info->lnode_list[curr_idx]; |
| if (!lnode) { |
| MSM_BUS_ERR("%s: Invalid lnode ptr lnode %d", |
| __func__, curr_idx); |
| ret = -ENXIO; |
| goto exit_update_path; |
| } |
| lnode->lnode_ib[ACTIVE_CTX] = act_req_ib; |
| lnode->lnode_ab[ACTIVE_CTX] = act_req_bw; |
| lnode->lnode_ib[DUAL_CTX] = slp_req_ib; |
| lnode->lnode_ab[DUAL_CTX] = slp_req_bw; |
| |
| for (i = 0; i < NUM_CTX; i++) |
| dev_info->node_bw[i].cur_clk_hz = |
| aggregate_bus_req(dev_info, i); |
| |
| add_node_to_clist(dev_info); |
| |
| if (rules_registered) { |
| rule_node = &dev_info->node_info->rule; |
| rule_node->id = dev_info->node_info->id; |
| rule_node->ib = dev_info->node_bw[ACTIVE_CTX].max_ib; |
| rule_node->ab = dev_info->node_bw[ACTIVE_CTX].sum_ab; |
| rule_node->clk = |
| dev_info->node_bw[ACTIVE_CTX].cur_clk_hz; |
| if (!rule_node->added) { |
| list_add_tail(&rule_node->link, &input_list); |
| rule_node->added = true; |
| } |
| } |
| |
| next_dev = lnode->next_dev; |
| curr_idx = lnode->next; |
| } |
| |
| exit_update_path: |
| return ret; |
| } |
| |
| static int remove_path(struct device *src_dev, int dst, uint64_t cur_ib, |
| uint64_t cur_ab, int src_idx, int active_only) |
| { |
| struct device *next_dev = NULL; |
| struct link_node *lnode = NULL; |
| struct msm_bus_node_device_type *dev_info = NULL; |
| int ret = 0; |
| int cur_idx = src_idx; |
| int next_idx; |
| |
| /* Update the current path to zero out all request from |
| * this cient on all paths |
| */ |
| if (!src_dev) { |
| MSM_BUS_ERR("%s: Can't find source device", __func__); |
| ret = -ENODEV; |
| goto exit_remove_path; |
| } |
| |
| ret = update_path(src_dev, dst, 0, 0, 0, 0, cur_ib, cur_ab, src_idx, |
| active_only); |
| if (ret) { |
| MSM_BUS_ERR("%s: Error zeroing out path ctx %d", |
| __func__, ACTIVE_CTX); |
| goto exit_remove_path; |
| } |
| |
| next_dev = src_dev; |
| |
| while (next_dev) { |
| dev_info = to_msm_bus_node(next_dev); |
| lnode = &dev_info->lnode_list[cur_idx]; |
| next_idx = lnode->next; |
| next_dev = lnode->next_dev; |
| remove_lnode(dev_info, cur_idx); |
| cur_idx = next_idx; |
| } |
| |
| exit_remove_path: |
| return ret; |
| } |
| |
| static void getpath_debug(int src, int curr, int active_only) |
| { |
| struct device *dev_node; |
| struct device *dev_it; |
| unsigned int hop = 1; |
| int idx; |
| struct msm_bus_node_device_type *devinfo; |
| int i; |
| |
| dev_node = bus_find_device(&msm_bus_type, NULL, |
| (void *) &src, |
| msm_bus_device_match_adhoc); |
| |
| if (!dev_node) { |
| MSM_BUS_ERR("SRC NOT FOUND %d", src); |
| return; |
| } |
| |
| idx = curr; |
| devinfo = to_msm_bus_node(dev_node); |
| dev_it = dev_node; |
| |
| MSM_BUS_ERR("Route list Src %d", src); |
| while (dev_it) { |
| struct msm_bus_node_device_type *busdev = |
| to_msm_bus_node(devinfo->node_info->bus_device); |
| |
| MSM_BUS_ERR("Hop[%d] at Device %d ctx %d", hop, |
| devinfo->node_info->id, active_only); |
| |
| for (i = 0; i < NUM_CTX; i++) { |
| MSM_BUS_ERR("dev info sel ib %llu", |
| devinfo->node_bw[i].cur_clk_hz); |
| MSM_BUS_ERR("dev info sel ab %llu", |
| devinfo->node_bw[i].sum_ab); |
| } |
| |
| dev_it = devinfo->lnode_list[idx].next_dev; |
| idx = devinfo->lnode_list[idx].next; |
| if (dev_it) |
| devinfo = to_msm_bus_node(dev_it); |
| |
| MSM_BUS_ERR("Bus Device %d", busdev->node_info->id); |
| MSM_BUS_ERR("Bus Clock %llu", busdev->clk[active_only].rate); |
| |
| if (idx < 0) |
| break; |
| hop++; |
| } |
| } |
| |
| static void unregister_client_adhoc(uint32_t cl) |
| { |
| int i; |
| struct msm_bus_scale_pdata *pdata; |
| int lnode, src, curr, dest; |
| uint64_t cur_clk, cur_bw; |
| struct msm_bus_client *client; |
| struct device *src_dev; |
| |
| rt_mutex_lock(&msm_bus_adhoc_lock); |
| if (!cl) { |
| MSM_BUS_ERR("%s: Null cl handle passed unregister\n", |
| __func__); |
| goto exit_unregister_client; |
| } |
| client = handle_list.cl_list[cl]; |
| pdata = client->pdata; |
| if (!pdata) { |
| MSM_BUS_ERR("%s: Null pdata passed to unregister\n", |
| __func__); |
| goto exit_unregister_client; |
| } |
| |
| curr = client->curr; |
| if (curr >= pdata->num_usecases) { |
| MSM_BUS_ERR("Invalid index Defaulting curr to 0"); |
| curr = 0; |
| } |
| |
| MSM_BUS_DBG("%s: Unregistering client %p", __func__, client); |
| |
| for (i = 0; i < pdata->usecase->num_paths; i++) { |
| src = client->pdata->usecase[curr].vectors[i].src; |
| dest = client->pdata->usecase[curr].vectors[i].dst; |
| |
| lnode = client->src_pnode[i]; |
| src_dev = client->src_devs[i]; |
| cur_clk = client->pdata->usecase[curr].vectors[i].ib; |
| cur_bw = client->pdata->usecase[curr].vectors[i].ab; |
| remove_path(src_dev, dest, cur_clk, cur_bw, lnode, |
| pdata->active_only); |
| } |
| commit_data(); |
| msm_bus_dbg_client_data(client->pdata, MSM_BUS_DBG_UNREGISTER, cl); |
| kfree(client->src_pnode); |
| kfree(client->src_devs); |
| kfree(client); |
| handle_list.cl_list[cl] = NULL; |
| exit_unregister_client: |
| rt_mutex_unlock(&msm_bus_adhoc_lock); |
| } |
| |
| static int alloc_handle_lst(int size) |
| { |
| int ret = 0; |
| struct msm_bus_client **t_cl_list; |
| |
| if (!handle_list.num_entries) { |
| t_cl_list = kzalloc(sizeof(struct msm_bus_client *) |
| * NUM_CL_HANDLES, GFP_KERNEL); |
| if (ZERO_OR_NULL_PTR(t_cl_list)) { |
| ret = -ENOMEM; |
| MSM_BUS_ERR("%s: Failed to allocate handles list", |
| __func__); |
| goto exit_alloc_handle_lst; |
| } |
| handle_list.cl_list = t_cl_list; |
| handle_list.num_entries += NUM_CL_HANDLES; |
| } else { |
| t_cl_list = krealloc(handle_list.cl_list, |
| sizeof(struct msm_bus_client *) * |
| (handle_list.num_entries + NUM_CL_HANDLES), |
| GFP_KERNEL); |
| if (ZERO_OR_NULL_PTR(t_cl_list)) { |
| ret = -ENOMEM; |
| MSM_BUS_ERR("%s: Failed to allocate handles list", |
| __func__); |
| goto exit_alloc_handle_lst; |
| } |
| |
| handle_list.cl_list = t_cl_list; |
| memset(&handle_list.cl_list[handle_list.num_entries], 0, |
| NUM_CL_HANDLES * sizeof(struct msm_bus_client *)); |
| handle_list.num_entries += NUM_CL_HANDLES; |
| } |
| exit_alloc_handle_lst: |
| return ret; |
| } |
| |
| static uint32_t gen_handle(struct msm_bus_client *client) |
| { |
| uint32_t handle = 0; |
| int i; |
| int ret = 0; |
| |
| for (i = 0; i < handle_list.num_entries; i++) { |
| if (i && !handle_list.cl_list[i]) { |
| handle = i; |
| break; |
| } |
| } |
| |
| if (!handle) { |
| ret = alloc_handle_lst(NUM_CL_HANDLES); |
| |
| if (ret) { |
| MSM_BUS_ERR("%s: Failed to allocate handle list", |
| __func__); |
| goto exit_gen_handle; |
| } |
| handle = i + 1; |
| } |
| handle_list.cl_list[handle] = client; |
| exit_gen_handle: |
| return handle; |
| } |
| |
| static uint32_t register_client_adhoc(struct msm_bus_scale_pdata *pdata) |
| { |
| int src, dest; |
| int i; |
| struct msm_bus_client *client = NULL; |
| int *lnode; |
| struct device *dev; |
| uint32_t handle = 0; |
| |
| rt_mutex_lock(&msm_bus_adhoc_lock); |
| client = kzalloc(sizeof(struct msm_bus_client), GFP_KERNEL); |
| if (!client) { |
| MSM_BUS_ERR("%s: Error allocating client data", __func__); |
| goto exit_register_client; |
| } |
| client->pdata = pdata; |
| |
| lnode = kcalloc(pdata->usecase->num_paths, sizeof(int), GFP_KERNEL); |
| if (ZERO_OR_NULL_PTR(lnode)) { |
| MSM_BUS_ERR("%s: Error allocating pathnode ptr!", __func__); |
| goto exit_lnode_malloc_fail; |
| } |
| client->src_pnode = lnode; |
| |
| client->src_devs = kzalloc(pdata->usecase->num_paths * |
| sizeof(struct device *), GFP_KERNEL); |
| if (IS_ERR_OR_NULL(client->src_devs)) { |
| MSM_BUS_ERR("%s: Error allocating pathnode ptr!", __func__); |
| goto exit_src_dev_malloc_fail; |
| } |
| client->curr = -1; |
| |
| for (i = 0; i < pdata->usecase->num_paths; i++) { |
| src = pdata->usecase->vectors[i].src; |
| dest = pdata->usecase->vectors[i].dst; |
| |
| if ((src < 0) || (dest < 0)) { |
| MSM_BUS_ERR("%s:Invalid src/dst.src %d dest %d", |
| __func__, src, dest); |
| goto exit_invalid_data; |
| } |
| dev = bus_find_device(&msm_bus_type, NULL, |
| (void *) &src, |
| msm_bus_device_match_adhoc); |
| if (IS_ERR_OR_NULL(dev)) { |
| MSM_BUS_ERR("%s:Failed to find path.src %d dest %d", |
| __func__, src, dest); |
| goto exit_invalid_data; |
| } |
| client->src_devs[i] = dev; |
| |
| lnode[i] = getpath(dev, dest, client->pdata->name); |
| if (lnode[i] < 0) { |
| MSM_BUS_ERR("%s:Failed to find path.src %d dest %d", |
| __func__, src, dest); |
| goto exit_invalid_data; |
| } |
| } |
| |
| handle = gen_handle(client); |
| msm_bus_dbg_client_data(client->pdata, MSM_BUS_DBG_REGISTER, |
| handle); |
| MSM_BUS_DBG("%s:Client handle %d %s", __func__, handle, |
| client->pdata->name); |
| rt_mutex_unlock(&msm_bus_adhoc_lock); |
| return handle; |
| exit_invalid_data: |
| kfree(client->src_devs); |
| exit_src_dev_malloc_fail: |
| kfree(lnode); |
| exit_lnode_malloc_fail: |
| kfree(client); |
| exit_register_client: |
| rt_mutex_unlock(&msm_bus_adhoc_lock); |
| return handle; |
| } |
| |
| static int update_client_paths(struct msm_bus_client *client, bool log_trns, |
| unsigned int idx) |
| { |
| int lnode, src, dest, cur_idx; |
| uint64_t req_clk, req_bw, curr_clk, curr_bw, slp_clk, slp_bw; |
| int i, ret = 0; |
| struct msm_bus_scale_pdata *pdata; |
| struct device *src_dev; |
| |
| if (!client) { |
| MSM_BUS_ERR("Client handle Null"); |
| ret = -ENXIO; |
| goto exit_update_client_paths; |
| } |
| |
| pdata = client->pdata; |
| if (!pdata) { |
| MSM_BUS_ERR("Client pdata Null"); |
| ret = -ENXIO; |
| goto exit_update_client_paths; |
| } |
| |
| cur_idx = client->curr; |
| client->curr = idx; |
| for (i = 0; i < pdata->usecase->num_paths; i++) { |
| src = pdata->usecase[idx].vectors[i].src; |
| dest = pdata->usecase[idx].vectors[i].dst; |
| |
| lnode = client->src_pnode[i]; |
| src_dev = client->src_devs[i]; |
| req_clk = client->pdata->usecase[idx].vectors[i].ib; |
| req_bw = client->pdata->usecase[idx].vectors[i].ab; |
| if (cur_idx < 0) { |
| curr_clk = 0; |
| curr_bw = 0; |
| } else { |
| curr_clk = |
| client->pdata->usecase[cur_idx].vectors[i].ib; |
| curr_bw = client->pdata->usecase[cur_idx].vectors[i].ab; |
| MSM_BUS_DBG("%s:ab: %llu ib: %llu\n", __func__, |
| curr_bw, curr_clk); |
| } |
| |
| if (pdata->active_only) { |
| slp_clk = 0; |
| slp_bw = 0; |
| } else { |
| slp_clk = req_clk; |
| slp_bw = req_bw; |
| } |
| |
| ret = update_path(src_dev, dest, req_clk, req_bw, slp_clk, |
| slp_bw, curr_clk, curr_bw, lnode, pdata->active_only); |
| |
| if (ret) { |
| MSM_BUS_ERR("%s: Update path failed! %d ctx %d\n", |
| __func__, ret, pdata->active_only); |
| goto exit_update_client_paths; |
| } |
| |
| if (log_trns) |
| getpath_debug(src, lnode, pdata->active_only); |
| } |
| commit_data(); |
| exit_update_client_paths: |
| return ret; |
| } |
| |
| static int update_context(uint32_t cl, bool active_only, |
| unsigned int ctx_idx) |
| { |
| int ret = 0; |
| struct msm_bus_scale_pdata *pdata; |
| struct msm_bus_client *client; |
| |
| rt_mutex_lock(&msm_bus_adhoc_lock); |
| if (!cl) { |
| MSM_BUS_ERR("%s: Invalid client handle %d", __func__, cl); |
| ret = -ENXIO; |
| goto exit_update_context; |
| } |
| |
| client = handle_list.cl_list[cl]; |
| if (!client) { |
| ret = -ENXIO; |
| goto exit_update_context; |
| } |
| |
| pdata = client->pdata; |
| if (!pdata) { |
| ret = -ENXIO; |
| goto exit_update_context; |
| } |
| if (pdata->active_only == active_only) { |
| MSM_BUS_ERR("No change in context(%d==%d), skip\n", |
| pdata->active_only, active_only); |
| ret = -ENXIO; |
| goto exit_update_context; |
| } |
| |
| if (ctx_idx >= pdata->num_usecases) { |
| MSM_BUS_ERR("Client %u passed invalid index: %d\n", |
| cl, ctx_idx); |
| ret = -ENXIO; |
| goto exit_update_context; |
| } |
| |
| pdata->active_only = active_only; |
| |
| msm_bus_dbg_client_data(client->pdata, ctx_idx, cl); |
| ret = update_client_paths(client, false, ctx_idx); |
| if (ret) { |
| pr_err("%s: Err updating path\n", __func__); |
| goto exit_update_context; |
| } |
| |
| trace_bus_update_request_end(pdata->name); |
| |
| exit_update_context: |
| rt_mutex_unlock(&msm_bus_adhoc_lock); |
| return ret; |
| } |
| |
| static int update_request_adhoc(uint32_t cl, unsigned int index) |
| { |
| int ret = 0; |
| struct msm_bus_scale_pdata *pdata; |
| struct msm_bus_client *client; |
| const char *test_cl = "Null"; |
| bool log_transaction = false; |
| |
| rt_mutex_lock(&msm_bus_adhoc_lock); |
| |
| if (!cl) { |
| MSM_BUS_ERR("%s: Invalid client handle %d", __func__, cl); |
| ret = -ENXIO; |
| goto exit_update_request; |
| } |
| |
| client = handle_list.cl_list[cl]; |
| if (!client) { |
| MSM_BUS_ERR("%s: Invalid client pointer ", __func__); |
| ret = -ENXIO; |
| goto exit_update_request; |
| } |
| |
| pdata = client->pdata; |
| if (!pdata) { |
| MSM_BUS_ERR("%s: Client data Null.[client didn't register]", |
| __func__); |
| ret = -ENXIO; |
| goto exit_update_request; |
| } |
| |
| if (index >= pdata->num_usecases) { |
| MSM_BUS_ERR("Client %u passed invalid index: %d\n", |
| cl, index); |
| ret = -ENXIO; |
| goto exit_update_request; |
| } |
| |
| if (client->curr == index) { |
| MSM_BUS_DBG("%s: Not updating client request idx %d unchanged", |
| __func__, index); |
| goto exit_update_request; |
| } |
| |
| if (!strcmp(test_cl, pdata->name)) |
| log_transaction = true; |
| |
| MSM_BUS_DBG("%s: cl: %u index: %d curr: %d num_paths: %d\n", __func__, |
| cl, index, client->curr, client->pdata->usecase->num_paths); |
| msm_bus_dbg_client_data(client->pdata, index, cl); |
| ret = update_client_paths(client, log_transaction, index); |
| if (ret) { |
| pr_err("%s: Err updating path\n", __func__); |
| goto exit_update_request; |
| } |
| |
| trace_bus_update_request_end(pdata->name); |
| |
| exit_update_request: |
| rt_mutex_unlock(&msm_bus_adhoc_lock); |
| return ret; |
| } |
| |
| static void free_cl_mem(struct msm_bus_client_handle *cl) |
| { |
| if (cl) { |
| kfree(cl->name); |
| kfree(cl); |
| cl = NULL; |
| } |
| } |
| |
| static int update_bw_adhoc(struct msm_bus_client_handle *cl, u64 ab, u64 ib) |
| { |
| int ret = 0; |
| char *test_cl = "test-client"; |
| bool log_transaction = false; |
| u64 slp_ib, slp_ab; |
| |
| rt_mutex_lock(&msm_bus_adhoc_lock); |
| |
| if (!cl) { |
| MSM_BUS_ERR("%s: Invalid client handle %p", __func__, cl); |
| ret = -ENXIO; |
| goto exit_update_request; |
| } |
| |
| if (!strcmp(test_cl, cl->name)) |
| log_transaction = true; |
| |
| msm_bus_dbg_rec_transaction(cl, ab, ib); |
| |
| if ((cl->cur_act_ib == ib) && (cl->cur_act_ab == ab)) { |
| MSM_BUS_DBG("%s:no change in request", cl->name); |
| goto exit_update_request; |
| } |
| |
| if (cl->active_only) { |
| slp_ib = 0; |
| slp_ab = 0; |
| } else { |
| slp_ib = ib; |
| slp_ab = ab; |
| } |
| |
| ret = update_path(cl->mas_dev, cl->slv, ib, ab, slp_ib, slp_ab, |
| cl->cur_act_ib, cl->cur_act_ab, cl->first_hop, cl->active_only); |
| |
| if (ret) { |
| MSM_BUS_ERR("%s: Update path failed! %d active_only %d\n", |
| __func__, ret, cl->active_only); |
| goto exit_update_request; |
| } |
| |
| commit_data(); |
| cl->cur_act_ib = ib; |
| cl->cur_act_ab = ab; |
| cl->cur_slp_ib = slp_ib; |
| cl->cur_slp_ab = slp_ab; |
| |
| if (log_transaction) |
| getpath_debug(cl->mas, cl->first_hop, cl->active_only); |
| trace_bus_update_request_end(cl->name); |
| exit_update_request: |
| rt_mutex_unlock(&msm_bus_adhoc_lock); |
| |
| return ret; |
| } |
| |
| static int update_bw_context(struct msm_bus_client_handle *cl, u64 act_ab, |
| u64 act_ib, u64 slp_ib, u64 slp_ab) |
| { |
| int ret = 0; |
| |
| rt_mutex_lock(&msm_bus_adhoc_lock); |
| if (!cl) { |
| MSM_BUS_ERR("Invalid client handle %p", cl); |
| ret = -ENXIO; |
| goto exit_change_context; |
| } |
| |
| if ((cl->cur_act_ib == act_ib) && |
| (cl->cur_act_ab == act_ab) && |
| (cl->cur_slp_ib == slp_ib) && |
| (cl->cur_slp_ab == slp_ab)) { |
| MSM_BUS_ERR("No change in vote"); |
| goto exit_change_context; |
| } |
| |
| if (!slp_ab && !slp_ib) |
| cl->active_only = true; |
| msm_bus_dbg_rec_transaction(cl, cl->cur_act_ab, cl->cur_slp_ib); |
| ret = update_path(cl->mas_dev, cl->slv, act_ib, act_ab, slp_ib, slp_ab, |
| cl->cur_act_ab, cl->cur_act_ab, cl->first_hop, |
| cl->active_only); |
| if (ret) { |
| MSM_BUS_ERR("%s: Update path failed! %d active_only %d\n", |
| __func__, ret, cl->active_only); |
| goto exit_change_context; |
| } |
| commit_data(); |
| cl->cur_act_ib = act_ib; |
| cl->cur_act_ab = act_ab; |
| cl->cur_slp_ib = slp_ib; |
| cl->cur_slp_ab = slp_ab; |
| trace_bus_update_request_end(cl->name); |
| exit_change_context: |
| rt_mutex_unlock(&msm_bus_adhoc_lock); |
| return ret; |
| } |
| |
| static void unregister_adhoc(struct msm_bus_client_handle *cl) |
| { |
| rt_mutex_lock(&msm_bus_adhoc_lock); |
| if (!cl) { |
| MSM_BUS_ERR("%s: Null cl handle passed unregister\n", |
| __func__); |
| goto exit_unregister_client; |
| } |
| |
| MSM_BUS_DBG("%s: Unregistering client %p", __func__, cl); |
| |
| remove_path(cl->mas_dev, cl->slv, cl->cur_act_ib, cl->cur_act_ab, |
| cl->first_hop, cl->active_only); |
| commit_data(); |
| msm_bus_dbg_remove_client(cl); |
| kfree(cl); |
| exit_unregister_client: |
| rt_mutex_unlock(&msm_bus_adhoc_lock); |
| } |
| |
| static struct msm_bus_client_handle* |
| register_adhoc(uint32_t mas, uint32_t slv, char *name, bool active_only) |
| { |
| struct msm_bus_client_handle *client = NULL; |
| int len = 0; |
| |
| rt_mutex_lock(&msm_bus_adhoc_lock); |
| |
| if (!(mas && slv && name)) { |
| pr_err("%s: Error: src dst name num_paths are required", |
| __func__); |
| goto exit_register; |
| } |
| |
| client = kzalloc(sizeof(struct msm_bus_client_handle), GFP_KERNEL); |
| if (!client) { |
| MSM_BUS_ERR("%s: Error allocating client data", __func__); |
| goto exit_register; |
| } |
| |
| len = strnlen(name, MAX_STR_CL); |
| client->name = kzalloc((len + 1), GFP_KERNEL); |
| if (!client->name) { |
| MSM_BUS_ERR("%s: Error allocating client name buf", __func__); |
| free_cl_mem(client); |
| goto exit_register; |
| } |
| strlcpy(client->name, name, MAX_STR_CL); |
| client->active_only = active_only; |
| |
| client->mas = mas; |
| client->slv = slv; |
| |
| client->mas_dev = bus_find_device(&msm_bus_type, NULL, |
| (void *) &mas, |
| msm_bus_device_match_adhoc); |
| if (IS_ERR_OR_NULL(client->mas_dev)) { |
| MSM_BUS_ERR("%s:Failed to find path.src %d dest %d", |
| __func__, client->mas, client->slv); |
| free_cl_mem(client); |
| goto exit_register; |
| } |
| |
| client->first_hop = getpath(client->mas_dev, client->slv, client->name); |
| if (client->first_hop < 0) { |
| MSM_BUS_ERR("%s:Failed to find path.src %d dest %d", |
| __func__, client->mas, client->slv); |
| free_cl_mem(client); |
| goto exit_register; |
| } |
| |
| MSM_BUS_DBG("%s:Client handle %p %s", __func__, client, |
| client->name); |
| msm_bus_dbg_add_client(client); |
| exit_register: |
| rt_mutex_unlock(&msm_bus_adhoc_lock); |
| return client; |
| } |
| /** |
| * msm_bus_arb_setops_adhoc() : Setup the bus arbitration ops |
| * @ arb_ops: pointer to the arb ops. |
| */ |
| void msm_bus_arb_setops_adhoc(struct msm_bus_arb_ops *arb_ops) |
| { |
| arb_ops->register_client = register_client_adhoc; |
| arb_ops->update_request = update_request_adhoc; |
| arb_ops->unregister_client = unregister_client_adhoc; |
| arb_ops->update_context = update_context; |
| |
| arb_ops->register_cl = register_adhoc; |
| arb_ops->unregister = unregister_adhoc; |
| arb_ops->update_bw = update_bw_adhoc; |
| arb_ops->update_bw_context = update_bw_context; |
| } |