4 * DSP-BIOS Bridge driver support functions for TI OMAP processors.
6 * Processor interface at the driver level.
8 * Copyright (C) 2005-2006 Texas Instruments, Inc.
10 * This package is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License version 2 as
12 * published by the Free Software Foundation.
14 * THIS PACKAGE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
15 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
16 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
19 #include <linux/types.h>
20 /* ------------------------------------ Host OS */
21 #include <linux/dma-mapping.h>
22 #include <linux/scatterlist.h>
23 #include <dspbridge/host_os.h>
25 /* ----------------------------------- DSP/BIOS Bridge */
26 #include <dspbridge/dbdefs.h>
28 /* ----------------------------------- Trace & Debug */
29 #include <dspbridge/dbc.h>
31 /* ----------------------------------- OS Adaptation Layer */
32 #include <dspbridge/list.h>
33 #include <dspbridge/ntfy.h>
34 #include <dspbridge/sync.h>
35 /* ----------------------------------- Bridge Driver */
36 #include <dspbridge/dspdefs.h>
37 #include <dspbridge/dspdeh.h>
38 /* ----------------------------------- Platform Manager */
39 #include <dspbridge/cod.h>
40 #include <dspbridge/dev.h>
41 #include <dspbridge/procpriv.h>
42 #include <dspbridge/dmm.h>
44 /* ----------------------------------- Resource Manager */
45 #include <dspbridge/mgr.h>
46 #include <dspbridge/node.h>
47 #include <dspbridge/nldr.h>
48 #include <dspbridge/rmm.h>
50 /* ----------------------------------- Others */
51 #include <dspbridge/dbdcd.h>
52 #include <dspbridge/msg.h>
53 #include <dspbridge/dspioctl.h>
54 #include <dspbridge/drv.h>
57 /* ----------------------------------- This */
58 #include <dspbridge/proc.h>
59 #include <dspbridge/pwr.h>
61 #include <dspbridge/resourcecleanup.h>
62 /* ----------------------------------- Defines, Data Structures, Typedefs */
63 #define MAXCMDLINELEN 255
64 #define PROC_ENVPROCID "PROC_ID=%d"
65 #define MAXPROCIDLEN (8 + 5)
66 #define PROC_DFLT_TIMEOUT 10000 /* Time out in milliseconds */
67 #define PWR_TIMEOUT 500 /* Sleep/wake timout in msec */
68 #define EXTEND "_EXT_END" /* Extmem end addr in DSP binary */
70 #define DSP_CACHE_LINE 128
72 #define BUFMODE_MASK (3 << 14)
74 /* Buffer modes from DSP perspective */
75 #define RBUF 0x4000 /* Input buffer */
76 #define WBUF 0x8000 /* Output Buffer */
78 extern struct device *bridge;
80 /* ----------------------------------- Globals */
82 /* The proc_object structure. */
84 struct list_head link; /* Link to next proc_object */
85 struct dev_object *hdev_obj; /* Device this PROC represents */
86 u32 process; /* Process owning this Processor */
87 struct mgr_object *hmgr_obj; /* Manager Object Handle */
88 u32 attach_count; /* Processor attach count */
89 u32 processor_id; /* Processor number */
90 u32 utimeout; /* Time out count */
91 enum dsp_procstate proc_state; /* Processor state */
92 u32 ul_unit; /* DDSP unit number */
93 bool is_already_attached; /*
94 * True if the Device below has
97 struct ntfy_object *ntfy_obj; /* Manages notifications */
98 /* Bridge Context Handle */
99 struct bridge_dev_context *hbridge_context;
100 /* Function interface to Bridge driver */
101 struct bridge_drv_interface *intf_fxns;
103 struct list_head proc_list;
108 DEFINE_MUTEX(proc_lock); /* For critical sections */
110 /* ----------------------------------- Function Prototypes */
111 static int proc_monitor(struct proc_object *proc_obj);
112 static s32 get_envp_count(char **envp);
113 static char **prepend_envp(char **new_envp, char **envp, s32 envp_elems,
114 s32 cnew_envp, char *sz_var);
116 /* remember mapping information */
117 static struct dmm_map_object *add_mapping_info(struct process_context *pr_ctxt,
118 u32 mpu_addr, u32 dsp_addr, u32 size)
120 struct dmm_map_object *map_obj;
122 u32 num_usr_pgs = size / PG_SIZE4K;
124 pr_debug("%s: adding map info: mpu_addr 0x%x virt 0x%x size 0x%x\n",
128 map_obj = kzalloc(sizeof(struct dmm_map_object), GFP_KERNEL);
130 pr_err("%s: kzalloc failed\n", __func__);
133 INIT_LIST_HEAD(&map_obj->link);
135 map_obj->pages = kcalloc(num_usr_pgs, sizeof(struct page *),
137 if (!map_obj->pages) {
138 pr_err("%s: kzalloc failed\n", __func__);
143 map_obj->mpu_addr = mpu_addr;
144 map_obj->dsp_addr = dsp_addr;
145 map_obj->size = size;
146 map_obj->num_usr_pgs = num_usr_pgs;
148 spin_lock(&pr_ctxt->dmm_map_lock);
149 list_add(&map_obj->link, &pr_ctxt->dmm_map_list);
150 spin_unlock(&pr_ctxt->dmm_map_lock);
155 static int match_exact_map_obj(struct dmm_map_object *map_obj,
156 u32 dsp_addr, u32 size)
158 if (map_obj->dsp_addr == dsp_addr && map_obj->size != size)
159 pr_err("%s: addr match (0x%x), size don't (0x%x != 0x%x)\n",
160 __func__, dsp_addr, map_obj->size, size);
162 return map_obj->dsp_addr == dsp_addr &&
163 map_obj->size == size;
166 static void remove_mapping_information(struct process_context *pr_ctxt,
167 u32 dsp_addr, u32 size)
169 struct dmm_map_object *map_obj;
171 pr_debug("%s: looking for virt 0x%x size 0x%x\n", __func__,
174 spin_lock(&pr_ctxt->dmm_map_lock);
175 list_for_each_entry(map_obj, &pr_ctxt->dmm_map_list, link) {
176 pr_debug("%s: candidate: mpu_addr 0x%x virt 0x%x size 0x%x\n",
182 if (match_exact_map_obj(map_obj, dsp_addr, size)) {
183 pr_debug("%s: match, deleting map info\n", __func__);
184 list_del(&map_obj->link);
185 kfree(map_obj->dma_info.sg);
186 kfree(map_obj->pages);
190 pr_debug("%s: candidate didn't match\n", __func__);
193 pr_err("%s: failed to find given map info\n", __func__);
195 spin_unlock(&pr_ctxt->dmm_map_lock);
198 static int match_containing_map_obj(struct dmm_map_object *map_obj,
199 u32 mpu_addr, u32 size)
201 u32 map_obj_end = map_obj->mpu_addr + map_obj->size;
203 return mpu_addr >= map_obj->mpu_addr &&
204 mpu_addr + size <= map_obj_end;
207 static struct dmm_map_object *find_containing_mapping(
208 struct process_context *pr_ctxt,
209 u32 mpu_addr, u32 size)
211 struct dmm_map_object *map_obj;
212 pr_debug("%s: looking for mpu_addr 0x%x size 0x%x\n", __func__,
215 spin_lock(&pr_ctxt->dmm_map_lock);
216 list_for_each_entry(map_obj, &pr_ctxt->dmm_map_list, link) {
217 pr_debug("%s: candidate: mpu_addr 0x%x virt 0x%x size 0x%x\n",
222 if (match_containing_map_obj(map_obj, mpu_addr, size)) {
223 pr_debug("%s: match!\n", __func__);
227 pr_debug("%s: no match!\n", __func__);
232 spin_unlock(&pr_ctxt->dmm_map_lock);
236 static int find_first_page_in_cache(struct dmm_map_object *map_obj,
237 unsigned long mpu_addr)
239 u32 mapped_base_page = map_obj->mpu_addr >> PAGE_SHIFT;
240 u32 requested_base_page = mpu_addr >> PAGE_SHIFT;
241 int pg_index = requested_base_page - mapped_base_page;
243 if (pg_index < 0 || pg_index >= map_obj->num_usr_pgs) {
244 pr_err("%s: failed (got %d)\n", __func__, pg_index);
248 pr_debug("%s: first page is %d\n", __func__, pg_index);
252 static inline struct page *get_mapping_page(struct dmm_map_object *map_obj,
255 pr_debug("%s: looking for pg_i %d, num_usr_pgs: %d\n", __func__,
256 pg_i, map_obj->num_usr_pgs);
258 if (pg_i < 0 || pg_i >= map_obj->num_usr_pgs) {
259 pr_err("%s: requested pg_i %d is out of mapped range\n",
264 return map_obj->pages[pg_i];
268 * ======== proc_attach ========
270 * Prepare for communication with a particular DSP processor, and return
271 * a handle to the processor object.
274 proc_attach(u32 processor_id,
275 const struct dsp_processorattrin *attr_in,
276 void **ph_processor, struct process_context *pr_ctxt)
279 struct dev_object *hdev_obj;
280 struct proc_object *p_proc_object = NULL;
281 struct mgr_object *hmgr_obj = NULL;
282 struct drv_object *hdrv_obj = NULL;
283 struct drv_data *drv_datap = dev_get_drvdata(bridge);
286 DBC_REQUIRE(refs > 0);
287 DBC_REQUIRE(ph_processor != NULL);
289 if (pr_ctxt->hprocessor) {
290 *ph_processor = pr_ctxt->hprocessor;
294 /* Get the Driver and Manager Object Handles */
295 if (!drv_datap || !drv_datap->drv_object || !drv_datap->mgr_object) {
297 pr_err("%s: Failed to get object handles\n", __func__);
299 hdrv_obj = drv_datap->drv_object;
300 hmgr_obj = drv_datap->mgr_object;
304 /* Get the Device Object */
305 status = drv_get_dev_object(processor_id, hdrv_obj, &hdev_obj);
308 status = dev_get_dev_type(hdev_obj, &dev_type);
313 /* If we made it this far, create the Proceesor object: */
314 p_proc_object = kzalloc(sizeof(struct proc_object), GFP_KERNEL);
315 /* Fill out the Processor Object: */
316 if (p_proc_object == NULL) {
320 p_proc_object->hdev_obj = hdev_obj;
321 p_proc_object->hmgr_obj = hmgr_obj;
322 p_proc_object->processor_id = dev_type;
323 /* Store TGID instead of process handle */
324 p_proc_object->process = current->tgid;
326 INIT_LIST_HEAD(&p_proc_object->proc_list);
329 p_proc_object->utimeout = attr_in->utimeout;
331 p_proc_object->utimeout = PROC_DFLT_TIMEOUT;
333 status = dev_get_intf_fxns(hdev_obj, &p_proc_object->intf_fxns);
335 status = dev_get_bridge_context(hdev_obj,
336 &p_proc_object->hbridge_context);
338 kfree(p_proc_object);
340 kfree(p_proc_object);
345 /* Create the Notification Object */
346 /* This is created with no event mask, no notify mask
347 * and no valid handle to the notification. They all get
348 * filled up when proc_register_notify is called */
349 p_proc_object->ntfy_obj = kmalloc(sizeof(struct ntfy_object),
351 if (p_proc_object->ntfy_obj)
352 ntfy_init(p_proc_object->ntfy_obj);
357 /* Insert the Processor Object into the DEV List.
358 * Return handle to this Processor Object:
359 * Find out if the Device is already attached to a
360 * Processor. If so, return AlreadyAttached status */
361 lst_init_elem(&p_proc_object->link);
362 status = dev_insert_proc_object(p_proc_object->hdev_obj,
365 is_already_attached);
367 if (p_proc_object->is_already_attached)
370 if (p_proc_object->ntfy_obj) {
371 ntfy_delete(p_proc_object->ntfy_obj);
372 kfree(p_proc_object->ntfy_obj);
375 kfree(p_proc_object);
378 *ph_processor = (void *)p_proc_object;
379 pr_ctxt->hprocessor = *ph_processor;
380 (void)proc_notify_clients(p_proc_object,
381 DSP_PROCESSORATTACH);
384 /* Don't leak memory if status is failed */
385 kfree(p_proc_object);
388 DBC_ENSURE((status == -EPERM && *ph_processor == NULL) ||
389 (!status && p_proc_object) ||
390 (status == 0 && p_proc_object));
395 static int get_exec_file(struct cfg_devnode *dev_node_obj,
396 struct dev_object *hdev_obj,
397 u32 size, char *exec_file)
401 struct drv_data *drv_datap = dev_get_drvdata(bridge);
403 dev_get_dev_type(hdev_obj, (u8 *) &dev_type);
408 if (dev_type == DSP_UNIT) {
409 if (!drv_datap || !drv_datap->base_img)
412 if (strlen(drv_datap->base_img) > size)
415 strcpy(exec_file, drv_datap->base_img);
416 } else if (dev_type == IVA_UNIT && iva_img) {
417 len = strlen(iva_img);
418 strncpy(exec_file, iva_img, len + 1);
427 * ======== proc_auto_start ======== =
429 * A Particular device gets loaded with the default image
430 * if the AutoStart flag is set.
432 * hdev_obj: Handle to the Device
434 * 0: On Successful Loading
435 * -EPERM General Failure
440 int proc_auto_start(struct cfg_devnode *dev_node_obj,
441 struct dev_object *hdev_obj)
444 struct proc_object *p_proc_object;
445 char sz_exec_file[MAXCMDLINELEN];
447 struct mgr_object *hmgr_obj = NULL;
448 struct drv_data *drv_datap = dev_get_drvdata(bridge);
451 DBC_REQUIRE(refs > 0);
452 DBC_REQUIRE(dev_node_obj != NULL);
453 DBC_REQUIRE(hdev_obj != NULL);
455 /* Create a Dummy PROC Object */
456 if (!drv_datap || !drv_datap->mgr_object) {
458 pr_err("%s: Failed to retrieve the object handle\n", __func__);
461 hmgr_obj = drv_datap->mgr_object;
464 p_proc_object = kzalloc(sizeof(struct proc_object), GFP_KERNEL);
465 if (p_proc_object == NULL) {
469 p_proc_object->hdev_obj = hdev_obj;
470 p_proc_object->hmgr_obj = hmgr_obj;
471 status = dev_get_intf_fxns(hdev_obj, &p_proc_object->intf_fxns);
473 status = dev_get_bridge_context(hdev_obj,
474 &p_proc_object->hbridge_context);
478 /* Stop the Device, put it into standby mode */
479 status = proc_stop(p_proc_object);
484 /* Get the default executable for this board... */
485 dev_get_dev_type(hdev_obj, (u8 *) &dev_type);
486 p_proc_object->processor_id = dev_type;
487 status = get_exec_file(dev_node_obj, hdev_obj, sizeof(sz_exec_file),
490 argv[0] = sz_exec_file;
492 /* ...and try to load it: */
493 status = proc_load(p_proc_object, 1, (const char **)argv, NULL);
495 status = proc_start(p_proc_object);
497 kfree(p_proc_object->psz_last_coff);
498 p_proc_object->psz_last_coff = NULL;
500 kfree(p_proc_object);
506 * ======== proc_ctrl ========
508 * Pass control information to the GPP device driver managing the
511 * This will be an OEM-only function, and not part of the DSP/BIOS Bridge
512 * application developer's API.
513 * Call the bridge_dev_ctrl fxn with the Argument. This is a Synchronous
514 * Operation. arg can be null.
516 int proc_ctrl(void *hprocessor, u32 dw_cmd, struct dsp_cbdata * arg)
519 struct proc_object *p_proc_object = hprocessor;
522 DBC_REQUIRE(refs > 0);
525 /* intercept PWR deep sleep command */
526 if (dw_cmd == BRDIOCTL_DEEPSLEEP) {
527 timeout = arg->cb_data;
528 status = pwr_sleep_dsp(PWR_DEEPSLEEP, timeout);
530 /* intercept PWR emergency sleep command */
531 else if (dw_cmd == BRDIOCTL_EMERGENCYSLEEP) {
532 timeout = arg->cb_data;
533 status = pwr_sleep_dsp(PWR_EMERGENCYDEEPSLEEP, timeout);
534 } else if (dw_cmd == PWR_DEEPSLEEP) {
535 /* timeout = arg->cb_data; */
536 status = pwr_sleep_dsp(PWR_DEEPSLEEP, timeout);
538 /* intercept PWR wake commands */
539 else if (dw_cmd == BRDIOCTL_WAKEUP) {
540 timeout = arg->cb_data;
541 status = pwr_wake_dsp(timeout);
542 } else if (dw_cmd == PWR_WAKEUP) {
543 /* timeout = arg->cb_data; */
544 status = pwr_wake_dsp(timeout);
546 if (!((*p_proc_object->intf_fxns->pfn_dev_cntrl)
547 (p_proc_object->hbridge_context, dw_cmd,
561 * ======== proc_detach ========
563 * Destroys the Processor Object. Removes the notification from the Dev
566 int proc_detach(struct process_context *pr_ctxt)
569 struct proc_object *p_proc_object = NULL;
571 DBC_REQUIRE(refs > 0);
573 p_proc_object = (struct proc_object *)pr_ctxt->hprocessor;
576 /* Notify the Client */
577 ntfy_notify(p_proc_object->ntfy_obj, DSP_PROCESSORDETACH);
578 /* Remove the notification memory */
579 if (p_proc_object->ntfy_obj) {
580 ntfy_delete(p_proc_object->ntfy_obj);
581 kfree(p_proc_object->ntfy_obj);
584 kfree(p_proc_object->psz_last_coff);
585 p_proc_object->psz_last_coff = NULL;
586 /* Remove the Proc from the DEV List */
587 (void)dev_remove_proc_object(p_proc_object->hdev_obj,
588 (u32) p_proc_object);
589 /* Free the Processor Object */
590 kfree(p_proc_object);
591 pr_ctxt->hprocessor = NULL;
600 * ======== proc_enum_nodes ========
602 * Enumerate and get configuration information about nodes allocated
603 * on a DSP processor.
605 int proc_enum_nodes(void *hprocessor, void **node_tab,
606 u32 node_tab_size, u32 *pu_num_nodes,
610 struct proc_object *p_proc_object = (struct proc_object *)hprocessor;
611 struct node_mgr *hnode_mgr = NULL;
613 DBC_REQUIRE(refs > 0);
614 DBC_REQUIRE(node_tab != NULL || node_tab_size == 0);
615 DBC_REQUIRE(pu_num_nodes != NULL);
616 DBC_REQUIRE(pu_allocated != NULL);
619 if (!(dev_get_node_manager(p_proc_object->hdev_obj,
622 status = node_enum_nodes(hnode_mgr, node_tab,
635 /* Cache operation against kernel address instead of users */
636 static int build_dma_sg(struct dmm_map_object *map_obj, unsigned long start,
637 ssize_t len, int pg_i)
640 unsigned long offset;
643 struct scatterlist *sg = map_obj->dma_info.sg;
646 page = get_mapping_page(map_obj, pg_i);
648 pr_err("%s: no page for %08lx\n", __func__, start);
651 } else if (IS_ERR(page)) {
652 pr_err("%s: err page for %08lx(%lu)\n", __func__, start,
658 offset = start & ~PAGE_MASK;
659 rest = min_t(ssize_t, PAGE_SIZE - offset, len);
661 sg_set_page(&sg[i], page, rest, offset);
668 if (i != map_obj->dma_info.num_pages) {
669 pr_err("%s: bad number of sg iterations\n", __func__);
678 static int memory_regain_ownership(struct dmm_map_object *map_obj,
679 unsigned long start, ssize_t len, enum dma_data_direction dir)
682 unsigned long first_data_page = start >> PAGE_SHIFT;
683 unsigned long last_data_page = ((u32)(start + len - 1) >> PAGE_SHIFT);
684 /* calculating the number of pages this area spans */
685 unsigned long num_pages = last_data_page - first_data_page + 1;
686 struct bridge_dma_map_info *dma_info = &map_obj->dma_info;
691 if (dma_info->dir != dir || dma_info->num_pages != num_pages) {
692 pr_err("%s: dma info doesn't match given params\n", __func__);
696 dma_unmap_sg(bridge, dma_info->sg, num_pages, dma_info->dir);
698 pr_debug("%s: dma_map_sg unmapped\n", __func__);
702 map_obj->dma_info.sg = NULL;
708 /* Cache operation against kernel address instead of users */
709 static int memory_give_ownership(struct dmm_map_object *map_obj,
710 unsigned long start, ssize_t len, enum dma_data_direction dir)
712 int pg_i, ret, sg_num;
713 struct scatterlist *sg;
714 unsigned long first_data_page = start >> PAGE_SHIFT;
715 unsigned long last_data_page = ((u32)(start + len - 1) >> PAGE_SHIFT);
716 /* calculating the number of pages this area spans */
717 unsigned long num_pages = last_data_page - first_data_page + 1;
719 pg_i = find_first_page_in_cache(map_obj, start);
721 pr_err("%s: failed to find first page in cache\n", __func__);
726 sg = kcalloc(num_pages, sizeof(*sg), GFP_KERNEL);
728 pr_err("%s: kcalloc failed\n", __func__);
733 sg_init_table(sg, num_pages);
735 /* cleanup a previous sg allocation */
736 /* this may happen if application doesn't signal for e/o DMA */
737 kfree(map_obj->dma_info.sg);
739 map_obj->dma_info.sg = sg;
740 map_obj->dma_info.dir = dir;
741 map_obj->dma_info.num_pages = num_pages;
743 ret = build_dma_sg(map_obj, start, len, pg_i);
747 sg_num = dma_map_sg(bridge, sg, num_pages, dir);
749 pr_err("%s: dma_map_sg failed: %d\n", __func__, sg_num);
754 pr_debug("%s: dma_map_sg mapped %d elements\n", __func__, sg_num);
755 map_obj->dma_info.sg_num = sg_num;
761 map_obj->dma_info.sg = NULL;
766 int proc_begin_dma(void *hprocessor, void *pmpu_addr, u32 ul_size,
767 enum dma_data_direction dir)
769 /* Keep STATUS here for future additions to this function */
771 struct process_context *pr_ctxt = (struct process_context *) hprocessor;
772 struct dmm_map_object *map_obj;
774 DBC_REQUIRE(refs > 0);
781 pr_debug("%s: addr 0x%x, size 0x%x, type %d\n", __func__,
785 /* find requested memory are in cached mapping information */
786 map_obj = find_containing_mapping(pr_ctxt, (u32) pmpu_addr, ul_size);
788 pr_err("%s: find_containing_mapping failed\n", __func__);
793 if (memory_give_ownership(map_obj, (u32) pmpu_addr, ul_size, dir)) {
794 pr_err("%s: InValid address parameters %p %x\n",
795 __func__, pmpu_addr, ul_size);
804 int proc_end_dma(void *hprocessor, void *pmpu_addr, u32 ul_size,
805 enum dma_data_direction dir)
807 /* Keep STATUS here for future additions to this function */
809 struct process_context *pr_ctxt = (struct process_context *) hprocessor;
810 struct dmm_map_object *map_obj;
812 DBC_REQUIRE(refs > 0);
819 pr_debug("%s: addr 0x%x, size 0x%x, type %d\n", __func__,
823 /* find requested memory are in cached mapping information */
824 map_obj = find_containing_mapping(pr_ctxt, (u32) pmpu_addr, ul_size);
826 pr_err("%s: find_containing_mapping failed\n", __func__);
831 if (memory_regain_ownership(map_obj, (u32) pmpu_addr, ul_size, dir)) {
832 pr_err("%s: InValid address parameters %p %x\n",
833 __func__, pmpu_addr, ul_size);
843 * ======== proc_flush_memory ========
847 int proc_flush_memory(void *hprocessor, void *pmpu_addr,
848 u32 ul_size, u32 ul_flags)
850 enum dma_data_direction dir = DMA_BIDIRECTIONAL;
852 return proc_begin_dma(hprocessor, pmpu_addr, ul_size, dir);
856 * ======== proc_invalidate_memory ========
858 * Invalidates the memory specified
860 int proc_invalidate_memory(void *hprocessor, void *pmpu_addr, u32 size)
862 enum dma_data_direction dir = DMA_FROM_DEVICE;
864 return proc_begin_dma(hprocessor, pmpu_addr, size, dir);
868 * ======== proc_get_resource_info ========
870 * Enumerate the resources currently available on a processor.
872 int proc_get_resource_info(void *hprocessor, u32 resource_type,
873 struct dsp_resourceinfo *resource_info,
874 u32 resource_info_size)
877 struct proc_object *p_proc_object = (struct proc_object *)hprocessor;
878 struct node_mgr *hnode_mgr = NULL;
879 struct nldr_object *nldr_obj = NULL;
880 struct rmm_target_obj *rmm = NULL;
881 struct io_mgr *hio_mgr = NULL; /* IO manager handle */
883 DBC_REQUIRE(refs > 0);
884 DBC_REQUIRE(resource_info != NULL);
885 DBC_REQUIRE(resource_info_size >= sizeof(struct dsp_resourceinfo));
887 if (!p_proc_object) {
891 switch (resource_type) {
892 case DSP_RESOURCE_DYNDARAM:
893 case DSP_RESOURCE_DYNSARAM:
894 case DSP_RESOURCE_DYNEXTERNAL:
895 case DSP_RESOURCE_DYNSRAM:
896 status = dev_get_node_manager(p_proc_object->hdev_obj,
903 status = node_get_nldr_obj(hnode_mgr, &nldr_obj);
905 status = nldr_get_rmm_manager(nldr_obj, &rmm);
908 (enum dsp_memtype)resource_type,
909 (struct dsp_memstat *)
910 &(resource_info->result.
918 case DSP_RESOURCE_PROCLOAD:
919 status = dev_get_io_mgr(p_proc_object->hdev_obj, &hio_mgr);
922 p_proc_object->intf_fxns->
923 pfn_io_get_proc_load(hio_mgr,
924 (struct dsp_procloadstat *)
925 &(resource_info->result.
939 * ======== proc_exit ========
941 * Decrement reference count, and free resources when reference count is
946 DBC_REQUIRE(refs > 0);
950 DBC_ENSURE(refs >= 0);
954 * ======== proc_get_dev_object ========
956 * Return the Dev Object handle for a given Processor.
959 int proc_get_dev_object(void *hprocessor,
960 struct dev_object **device_obj)
963 struct proc_object *p_proc_object = (struct proc_object *)hprocessor;
965 DBC_REQUIRE(refs > 0);
966 DBC_REQUIRE(device_obj != NULL);
969 *device_obj = p_proc_object->hdev_obj;
976 DBC_ENSURE((!status && *device_obj != NULL) ||
977 (status && *device_obj == NULL));
983 * ======== proc_get_state ========
985 * Report the state of the specified DSP processor.
987 int proc_get_state(void *hprocessor,
988 struct dsp_processorstate *proc_state_obj,
992 struct proc_object *p_proc_object = (struct proc_object *)hprocessor;
995 DBC_REQUIRE(refs > 0);
996 DBC_REQUIRE(proc_state_obj != NULL);
997 DBC_REQUIRE(state_info_size >= sizeof(struct dsp_processorstate));
1000 /* First, retrieve BRD state information */
1001 status = (*p_proc_object->intf_fxns->pfn_brd_status)
1002 (p_proc_object->hbridge_context, &brd_status);
1004 switch (brd_status) {
1006 proc_state_obj->proc_state = PROC_STOPPED;
1008 case BRD_SLEEP_TRANSITION:
1009 case BRD_DSP_HIBERNATION:
1012 proc_state_obj->proc_state = PROC_RUNNING;
1015 proc_state_obj->proc_state = PROC_LOADED;
1018 proc_state_obj->proc_state = PROC_ERROR;
1021 proc_state_obj->proc_state = 0xFF;
1029 dev_dbg(bridge, "%s, results: status: 0x%x proc_state_obj: 0x%x\n",
1030 __func__, status, proc_state_obj->proc_state);
1035 * ======== proc_get_trace ========
1037 * Retrieve the current contents of the trace buffer, located on the
1038 * Processor. Predefined symbols for the trace buffer must have been
1039 * configured into the DSP executable.
1041 * We support using the symbols SYS_PUTCBEG and SYS_PUTCEND to define a
1042 * trace buffer, only. Treat it as an undocumented feature.
1043 * This call is destructive, meaning the processor is placed in the monitor
1044 * state as a result of this function.
1046 int proc_get_trace(void *hprocessor, u8 * pbuf, u32 max_size)
1054 * ======== proc_init ========
1056 * Initialize PROC's private state, keeping a reference count on each call
1058 bool proc_init(void)
1062 DBC_REQUIRE(refs >= 0);
1067 DBC_ENSURE((ret && (refs > 0)) || (!ret && (refs >= 0)));
1073 * ======== proc_load ========
1075 * Reset a processor and load a new base program image.
1076 * This will be an OEM-only function, and not part of the DSP/BIOS Bridge
1077 * application developer's API.
1079 int proc_load(void *hprocessor, const s32 argc_index,
1080 const char **user_args, const char **user_envp)
1083 struct proc_object *p_proc_object = (struct proc_object *)hprocessor;
1084 struct io_mgr *hio_mgr; /* IO manager handle */
1085 struct msg_mgr *hmsg_mgr;
1086 struct cod_manager *cod_mgr; /* Code manager handle */
1087 char *pargv0; /* temp argv[0] ptr */
1088 char **new_envp; /* Updated envp[] array. */
1089 char sz_proc_id[MAXPROCIDLEN]; /* Size of "PROC_ID=<n>" */
1090 s32 envp_elems; /* Num elements in envp[]. */
1091 s32 cnew_envp; /* " " in new_envp[] */
1092 s32 nproc_id = 0; /* Anticipate MP version. */
1093 struct dcd_manager *hdcd_handle;
1094 struct dmm_object *dmm_mgr;
1098 struct drv_data *drv_datap = dev_get_drvdata(bridge);
1100 #ifdef OPT_LOAD_TIME_INSTRUMENTATION
1105 #if defined(CONFIG_TIDSPBRIDGE_DVFS) && !defined(CONFIG_CPU_FREQ)
1106 struct dspbridge_platform_data *pdata =
1107 omap_dspbridge_dev->dev.platform_data;
1110 DBC_REQUIRE(refs > 0);
1111 DBC_REQUIRE(argc_index > 0);
1112 DBC_REQUIRE(user_args != NULL);
1114 #ifdef OPT_LOAD_TIME_INSTRUMENTATION
1115 do_gettimeofday(&tv1);
1117 if (!p_proc_object) {
1121 dev_get_cod_mgr(p_proc_object->hdev_obj, &cod_mgr);
1126 status = proc_stop(hprocessor);
1130 /* Place the board in the monitor state. */
1131 status = proc_monitor(hprocessor);
1135 /* Save ptr to original argv[0]. */
1136 pargv0 = (char *)user_args[0];
1137 /*Prepend "PROC_ID=<nproc_id>"to envp array for target. */
1138 envp_elems = get_envp_count((char **)user_envp);
1139 cnew_envp = (envp_elems ? (envp_elems + 1) : (envp_elems + 2));
1140 new_envp = kzalloc(cnew_envp * sizeof(char **), GFP_KERNEL);
1142 status = snprintf(sz_proc_id, MAXPROCIDLEN, PROC_ENVPROCID,
1145 dev_dbg(bridge, "%s: Proc ID string overflow\n",
1150 prepend_envp(new_envp, (char **)user_envp,
1151 envp_elems, cnew_envp, sz_proc_id);
1152 /* Get the DCD Handle */
1153 status = mgr_get_dcd_handle(p_proc_object->hmgr_obj,
1154 (u32 *) &hdcd_handle);
1156 /* Before proceeding with new load,
1157 * check if a previously registered COFF
1159 * If yes, unregister nodes in previously
1160 * registered COFF. If any error occurred,
1161 * set previously registered COFF to NULL. */
1162 if (p_proc_object->psz_last_coff != NULL) {
1164 dcd_auto_unregister(hdcd_handle,
1167 /* Regardless of auto unregister status,
1168 * free previously allocated
1170 kfree(p_proc_object->psz_last_coff);
1171 p_proc_object->psz_last_coff = NULL;
1174 /* On success, do cod_open_base() */
1175 status = cod_open_base(cod_mgr, (char *)user_args[0],
1182 /* Auto-register data base */
1183 /* Get the DCD Handle */
1184 status = mgr_get_dcd_handle(p_proc_object->hmgr_obj,
1185 (u32 *) &hdcd_handle);
1187 /* Auto register nodes in specified COFF
1188 * file. If registration did not fail,
1189 * (status = 0 or -EACCES)
1190 * save the name of the COFF file for
1191 * de-registration in the future. */
1193 dcd_auto_register(hdcd_handle,
1194 (char *)user_args[0]);
1195 if (status == -EACCES)
1201 DBC_ASSERT(p_proc_object->psz_last_coff ==
1203 /* Allocate memory for pszLastCoff */
1204 p_proc_object->psz_last_coff =
1205 kzalloc((strlen(user_args[0]) +
1207 /* If memory allocated, save COFF file name */
1208 if (p_proc_object->psz_last_coff) {
1209 strncpy(p_proc_object->psz_last_coff,
1210 (char *)user_args[0],
1211 (strlen((char *)user_args[0]) +
1217 /* Update shared memory address and size */
1219 /* Create the message manager. This must be done
1220 * before calling the IOOnLoaded function. */
1221 dev_get_msg_mgr(p_proc_object->hdev_obj, &hmsg_mgr);
1223 status = msg_create(&hmsg_mgr, p_proc_object->hdev_obj,
1224 (msg_onexit) node_on_exit);
1225 DBC_ASSERT(!status);
1226 dev_set_msg_mgr(p_proc_object->hdev_obj, hmsg_mgr);
1230 /* Set the Device object's message manager */
1231 status = dev_get_io_mgr(p_proc_object->hdev_obj, &hio_mgr);
1233 status = (*p_proc_object->intf_fxns->pfn_io_on_loaded)
1239 /* Now, attempt to load an exec: */
1241 /* Boost the OPP level to Maximum level supported by baseport */
1242 #if defined(CONFIG_TIDSPBRIDGE_DVFS) && !defined(CONFIG_CPU_FREQ)
1243 if (pdata->cpu_set_freq)
1244 (*pdata->cpu_set_freq) (pdata->mpu_speed[VDD1_OPP5]);
1246 status = cod_load_base(cod_mgr, argc_index, (char **)user_args,
1248 p_proc_object->hdev_obj, NULL);
1250 if (status == -EBADF) {
1251 dev_dbg(bridge, "%s: Failure to Load the EXE\n",
1254 if (status == -ESPIPE) {
1255 pr_err("%s: Couldn't parse the file\n",
1259 /* Requesting the lowest opp supported */
1260 #if defined(CONFIG_TIDSPBRIDGE_DVFS) && !defined(CONFIG_CPU_FREQ)
1261 if (pdata->cpu_set_freq)
1262 (*pdata->cpu_set_freq) (pdata->mpu_speed[VDD1_OPP1]);
1267 /* Update the Processor status to loaded */
1268 status = (*p_proc_object->intf_fxns->pfn_brd_set_state)
1269 (p_proc_object->hbridge_context, BRD_LOADED);
1271 p_proc_object->proc_state = PROC_LOADED;
1272 if (p_proc_object->ntfy_obj)
1273 proc_notify_clients(p_proc_object,
1274 DSP_PROCESSORSTATECHANGE);
1278 status = proc_get_processor_id(hprocessor, &proc_id);
1279 if (proc_id == DSP_UNIT) {
1280 /* Use all available DSP address space after EXTMEM
1283 status = cod_get_sym_value(cod_mgr, EXTEND,
1286 /* Reset DMM structs and add an initial free chunk */
1289 dev_get_dmm_mgr(p_proc_object->hdev_obj,
1292 /* Set dw_ext_end to DMM START u8
1295 (dw_ext_end + 1) * DSPWORDSIZE;
1296 /* DMM memory is from EXT_END */
1297 status = dmm_create_tables(dmm_mgr,
1306 /* Restore the original argv[0] */
1308 user_args[0] = pargv0;
1310 if (!((*p_proc_object->intf_fxns->pfn_brd_status)
1311 (p_proc_object->hbridge_context, &brd_state))) {
1312 pr_info("%s: Processor Loaded %s\n", __func__, pargv0);
1313 kfree(drv_datap->base_img);
1314 drv_datap->base_img = kmalloc(strlen(pargv0) + 1,
1316 if (drv_datap->base_img)
1317 strncpy(drv_datap->base_img, pargv0,
1318 strlen(pargv0) + 1);
1321 DBC_ASSERT(brd_state == BRD_LOADED);
1327 pr_err("%s: Processor failed to load\n", __func__);
1328 proc_stop(p_proc_object);
1331 && p_proc_object->proc_state == PROC_LOADED)
1333 #ifdef OPT_LOAD_TIME_INSTRUMENTATION
1334 do_gettimeofday(&tv2);
1335 if (tv2.tv_usec < tv1.tv_usec) {
1336 tv2.tv_usec += 1000000;
1339 dev_dbg(bridge, "%s: time to load %d sec and %d usec\n", __func__,
1340 tv2.tv_sec - tv1.tv_sec, tv2.tv_usec - tv1.tv_usec);
1346 * ======== proc_map ========
1348 * Maps a MPU buffer to DSP address space.
1350 int proc_map(void *hprocessor, void *pmpu_addr, u32 ul_size,
1351 void *req_addr, void **pp_map_addr, u32 ul_map_attr,
1352 struct process_context *pr_ctxt)
1356 struct dmm_object *dmm_mgr;
1359 struct proc_object *p_proc_object = (struct proc_object *)hprocessor;
1360 struct dmm_map_object *map_obj;
1362 #ifdef CONFIG_TIDSPBRIDGE_CACHE_LINE_CHECK
1363 if ((ul_map_attr & BUFMODE_MASK) != RBUF) {
1364 if (!IS_ALIGNED((u32)pmpu_addr, DSP_CACHE_LINE) ||
1365 !IS_ALIGNED(ul_size, DSP_CACHE_LINE)) {
1366 pr_err("%s: not aligned: 0x%x (%d)\n", __func__,
1367 (u32)pmpu_addr, ul_size);
1373 /* Calculate the page-aligned PA, VA and size */
1374 va_align = PG_ALIGN_LOW((u32) req_addr, PG_SIZE4K);
1375 pa_align = PG_ALIGN_LOW((u32) pmpu_addr, PG_SIZE4K);
1376 size_align = PG_ALIGN_HIGH(ul_size + (u32) pmpu_addr - pa_align,
1379 if (!p_proc_object) {
1383 /* Critical section */
1384 mutex_lock(&proc_lock);
1385 dmm_get_handle(p_proc_object, &dmm_mgr);
1387 status = dmm_map_memory(dmm_mgr, va_align, size_align);
1391 /* Add mapping to the page tables. */
1393 /* mapped memory resource tracking */
1394 map_obj = add_mapping_info(pr_ctxt, pa_align, va_align,
1399 va_align = user_to_dsp_map(
1400 p_proc_object->hbridge_context->dsp_mmu,
1401 pa_align, va_align, size_align,
1403 if (IS_ERR_VALUE(va_align))
1404 status = (int)va_align;
1408 /* Mapped address = MSB of VA | LSB of PA */
1409 map_obj->dsp_addr = (va_align |
1410 ((u32)pmpu_addr & (PG_SIZE4K - 1)));
1411 *pp_map_addr = (void *)map_obj->dsp_addr;
1413 remove_mapping_information(pr_ctxt, va_align, size_align);
1414 dmm_un_map_memory(dmm_mgr, va_align, &size_align);
1416 mutex_unlock(&proc_lock);
1422 dev_dbg(bridge, "%s: hprocessor %p, pmpu_addr %p, ul_size %x, "
1423 "req_addr %p, ul_map_attr %x, pp_map_addr %p, va_align %x, "
1424 "pa_align %x, size_align %x status 0x%x\n", __func__,
1425 hprocessor, pmpu_addr, ul_size, req_addr, ul_map_attr,
1426 pp_map_addr, va_align, pa_align, size_align, status);
1432 * ======== proc_register_notify ========
1434 * Register to be notified of specific processor events.
1436 int proc_register_notify(void *hprocessor, u32 event_mask,
1437 u32 notify_type, struct dsp_notification
1441 struct proc_object *p_proc_object = (struct proc_object *)hprocessor;
1442 struct deh_mgr *hdeh_mgr;
1444 DBC_REQUIRE(hnotification != NULL);
1445 DBC_REQUIRE(refs > 0);
1447 /* Check processor handle */
1448 if (!p_proc_object) {
1452 /* Check if event mask is a valid processor related event */
1453 if (event_mask & ~(DSP_PROCESSORSTATECHANGE | DSP_PROCESSORATTACH |
1454 DSP_PROCESSORDETACH | DSP_PROCESSORRESTART |
1455 DSP_MMUFAULT | DSP_SYSERROR | DSP_PWRERROR |
1459 /* Check if notify type is valid */
1460 if (notify_type != DSP_SIGNALEVENT)
1464 /* If event mask is not DSP_SYSERROR, DSP_MMUFAULT,
1465 * or DSP_PWRERROR then register event immediately. */
1467 ~(DSP_SYSERROR | DSP_MMUFAULT | DSP_PWRERROR |
1469 status = ntfy_register(p_proc_object->ntfy_obj,
1470 hnotification, event_mask,
1472 /* Special case alert, special case alert!
1473 * If we're trying to *deregister* (i.e. event_mask
1474 * is 0), a DSP_SYSERROR or DSP_MMUFAULT notification,
1475 * we have to deregister with the DEH manager.
1476 * There's no way to know, based on event_mask which
1477 * manager the notification event was registered with,
1478 * so if we're trying to deregister and ntfy_register
1479 * failed, we'll give the deh manager a shot.
1481 if ((event_mask == 0) && status) {
1483 dev_get_deh_mgr(p_proc_object->hdev_obj,
1486 bridge_deh_register_notify(hdeh_mgr,
1492 status = dev_get_deh_mgr(p_proc_object->hdev_obj,
1495 bridge_deh_register_notify(hdeh_mgr,
1507 * ======== proc_reserve_memory ========
1509 * Reserve a virtually contiguous region of DSP address space.
1511 int proc_reserve_memory(void *hprocessor, u32 ul_size,
1513 struct process_context *pr_ctxt)
1515 struct dmm_object *dmm_mgr;
1517 struct proc_object *p_proc_object = (struct proc_object *)hprocessor;
1519 if (!p_proc_object) {
1524 status = dmm_get_handle(p_proc_object, &dmm_mgr);
1530 status = dmm_reserve_memory(dmm_mgr, ul_size, (u32 *) pp_rsv_addr);
1532 dev_dbg(bridge, "%s: hprocessor: 0x%p ul_size: 0x%x pp_rsv_addr: 0x%p "
1533 "status 0x%x\n", __func__, hprocessor,
1534 ul_size, pp_rsv_addr, status);
1539 * ======== proc_start ========
1541 * Start a processor running.
1543 int proc_start(void *hprocessor)
1546 struct proc_object *p_proc_object = (struct proc_object *)hprocessor;
1547 struct cod_manager *cod_mgr; /* Code manager handle */
1548 u32 dw_dsp_addr; /* Loaded code's entry point. */
1551 DBC_REQUIRE(refs > 0);
1552 if (!p_proc_object) {
1556 /* Call the bridge_brd_start */
1557 if (p_proc_object->proc_state != PROC_LOADED) {
1561 status = dev_get_cod_mgr(p_proc_object->hdev_obj, &cod_mgr);
1567 status = cod_get_entry(cod_mgr, &dw_dsp_addr);
1571 status = (*p_proc_object->intf_fxns->pfn_brd_start)
1572 (p_proc_object->hbridge_context, dw_dsp_addr);
1576 /* Call dev_create2 */
1577 status = dev_create2(p_proc_object->hdev_obj);
1579 p_proc_object->proc_state = PROC_RUNNING;
1580 /* Deep sleep switces off the peripheral clocks.
1581 * we just put the DSP CPU in idle in the idle loop.
1582 * so there is no need to send a command to DSP */
1584 if (p_proc_object->ntfy_obj) {
1585 proc_notify_clients(p_proc_object,
1586 DSP_PROCESSORSTATECHANGE);
1589 /* Failed to Create Node Manager and DISP Object
1590 * Stop the Processor from running. Put it in STOPPED State */
1591 (void)(*p_proc_object->intf_fxns->
1592 pfn_brd_stop) (p_proc_object->hbridge_context);
1593 p_proc_object->proc_state = PROC_STOPPED;
1597 if (!((*p_proc_object->intf_fxns->pfn_brd_status)
1598 (p_proc_object->hbridge_context, &brd_state))) {
1599 pr_info("%s: dsp in running state\n", __func__);
1600 DBC_ASSERT(brd_state != BRD_HIBERNATION);
1603 pr_err("%s: Failed to start the dsp\n", __func__);
1604 proc_stop(p_proc_object);
1608 DBC_ENSURE((!status && p_proc_object->proc_state ==
1609 PROC_RUNNING) || status);
1614 * ======== proc_stop ========
1616 * Stop a processor running.
1618 int proc_stop(void *hprocessor)
1621 struct proc_object *p_proc_object = (struct proc_object *)hprocessor;
1622 struct msg_mgr *hmsg_mgr;
1623 struct node_mgr *hnode_mgr;
1625 u32 node_tab_size = 1;
1627 u32 nodes_allocated = 0;
1630 DBC_REQUIRE(refs > 0);
1631 if (!p_proc_object) {
1635 /* check if there are any running nodes */
1636 status = dev_get_node_manager(p_proc_object->hdev_obj, &hnode_mgr);
1637 if (!status && hnode_mgr) {
1638 status = node_enum_nodes(hnode_mgr, &hnode, node_tab_size,
1639 &num_nodes, &nodes_allocated);
1640 if ((status == -EINVAL) || (nodes_allocated > 0)) {
1641 pr_err("%s: Can't stop device, active nodes = %d \n",
1642 __func__, nodes_allocated);
1646 /* Call the bridge_brd_stop */
1647 /* It is OK to stop a device that does n't have nodes OR not started */
1649 (*p_proc_object->intf_fxns->
1650 pfn_brd_stop) (p_proc_object->hbridge_context);
1652 dev_dbg(bridge, "%s: processor in standby mode\n", __func__);
1653 p_proc_object->proc_state = PROC_STOPPED;
1654 /* Destory the Node Manager, msg_ctrl Manager */
1655 if (!(dev_destroy2(p_proc_object->hdev_obj))) {
1656 /* Destroy the msg_ctrl by calling msg_delete */
1657 dev_get_msg_mgr(p_proc_object->hdev_obj, &hmsg_mgr);
1659 msg_delete(hmsg_mgr);
1660 dev_set_msg_mgr(p_proc_object->hdev_obj, NULL);
1662 if (!((*p_proc_object->
1663 intf_fxns->pfn_brd_status) (p_proc_object->
1666 DBC_ASSERT(brd_state == BRD_STOPPED);
1669 pr_err("%s: Failed to stop the processor\n", __func__);
1677 * ======== proc_un_map ========
1679 * Removes a MPU buffer mapping from the DSP address space.
1681 int proc_un_map(void *hprocessor, void *map_addr,
1682 struct process_context *pr_ctxt)
1685 struct proc_object *p_proc_object = (struct proc_object *)hprocessor;
1686 struct dmm_object *dmm_mgr;
1690 va_align = PG_ALIGN_LOW((u32) map_addr, PG_SIZE4K);
1691 if (!p_proc_object) {
1696 status = dmm_get_handle(hprocessor, &dmm_mgr);
1702 /* Critical section */
1703 mutex_lock(&proc_lock);
1705 * Update DMM structures. Get the size to unmap.
1706 * This function returns error if the VA is not mapped
1708 status = dmm_un_map_memory(dmm_mgr, (u32) va_align, &size_align);
1709 /* Remove mapping from the page tables. */
1711 status = user_to_dsp_unmap(
1712 p_proc_object->hbridge_context->dsp_mmu, va_align);
1714 mutex_unlock(&proc_lock);
1719 * A successful unmap should be followed by removal of map_obj
1720 * from dmm_map_list, so that mapped memory resource tracking
1723 remove_mapping_information(pr_ctxt, (u32) map_addr, size_align);
1726 dev_dbg(bridge, "%s: hprocessor: 0x%p map_addr: 0x%p status: 0x%x\n",
1727 __func__, hprocessor, map_addr, status);
1732 * ======== proc_un_reserve_memory ========
1734 * Frees a previously reserved region of DSP address space.
1736 int proc_un_reserve_memory(void *hprocessor, void *prsv_addr,
1737 struct process_context *pr_ctxt)
1739 struct dmm_object *dmm_mgr;
1741 struct proc_object *p_proc_object = (struct proc_object *)hprocessor;
1743 if (!p_proc_object) {
1748 status = dmm_get_handle(p_proc_object, &dmm_mgr);
1754 status = dmm_un_reserve_memory(dmm_mgr, (u32) prsv_addr);
1756 dev_dbg(bridge, "%s: hprocessor: 0x%p prsv_addr: 0x%p status: 0x%x\n",
1757 __func__, hprocessor, prsv_addr, status);
1762 * ======== = proc_monitor ======== ==
1764 * Place the Processor in Monitor State. This is an internal
1765 * function and a requirement before Processor is loaded.
1766 * This does a bridge_brd_stop, dev_destroy2 and bridge_brd_monitor.
1767 * In dev_destroy2 we delete the node manager.
1769 * p_proc_object: Pointer to Processor Object
1771 * 0: Processor placed in monitor mode.
1772 * !0: Failed to place processor in monitor mode.
1774 * Valid Processor Handle
1776 * Success: ProcObject state is PROC_IDLE
1778 static int proc_monitor(struct proc_object *proc_obj)
1780 int status = -EPERM;
1781 struct msg_mgr *hmsg_mgr;
1784 DBC_REQUIRE(refs > 0);
1785 DBC_REQUIRE(proc_obj);
1787 /* This is needed only when Device is loaded when it is
1788 * already 'ACTIVE' */
1789 /* Destory the Node Manager, msg_ctrl Manager */
1790 if (!dev_destroy2(proc_obj->hdev_obj)) {
1791 /* Destroy the msg_ctrl by calling msg_delete */
1792 dev_get_msg_mgr(proc_obj->hdev_obj, &hmsg_mgr);
1794 msg_delete(hmsg_mgr);
1795 dev_set_msg_mgr(proc_obj->hdev_obj, NULL);
1798 /* Place the Board in the Monitor State */
1799 if (!((*proc_obj->intf_fxns->pfn_brd_monitor)
1800 (proc_obj->hbridge_context))) {
1802 if (!((*proc_obj->intf_fxns->pfn_brd_status)
1803 (proc_obj->hbridge_context, &brd_state)))
1804 DBC_ASSERT(brd_state == BRD_IDLE);
1807 DBC_ENSURE((!status && brd_state == BRD_IDLE) ||
1813 * ======== get_envp_count ========
1815 * Return the number of elements in the envp array, including the
1816 * terminating NULL element.
1818 static s32 get_envp_count(char **envp)
1825 ret += 1; /* Include the terminating NULL in the count. */
1832 * ======== prepend_envp ========
1834 * Prepend an environment variable=value pair to the new envp array, and
1835 * copy in the existing var=value pairs in the old envp array.
1837 static char **prepend_envp(char **new_envp, char **envp, s32 envp_elems,
1838 s32 cnew_envp, char *sz_var)
1840 char **pp_envp = new_envp;
1842 DBC_REQUIRE(new_envp);
1844 /* Prepend new environ var=value string */
1845 *new_envp++ = sz_var;
1847 /* Copy user's environment into our own. */
1848 while (envp_elems--)
1849 *new_envp++ = *envp++;
1851 /* Ensure NULL terminates the new environment strings array. */
1852 if (envp_elems == 0)
1859 * ======== proc_notify_clients ========
1861 * Notify the processor the events.
1863 int proc_notify_clients(void *proc, u32 events)
1866 struct proc_object *p_proc_object = (struct proc_object *)proc;
1868 DBC_REQUIRE(p_proc_object);
1869 DBC_REQUIRE(is_valid_proc_event(events));
1870 DBC_REQUIRE(refs > 0);
1871 if (!p_proc_object) {
1876 ntfy_notify(p_proc_object->ntfy_obj, events);
1882 * ======== proc_notify_all_clients ========
1884 * Notify the processor the events. This includes notifying all clients
1885 * attached to a particulat DSP.
1887 int proc_notify_all_clients(void *proc, u32 events)
1890 struct proc_object *p_proc_object = (struct proc_object *)proc;
1892 DBC_REQUIRE(is_valid_proc_event(events));
1893 DBC_REQUIRE(refs > 0);
1895 if (!p_proc_object) {
1900 dev_notify_clients(p_proc_object->hdev_obj, events);
1907 * ======== proc_get_processor_id ========
1909 * Retrieves the processor ID.
1911 int proc_get_processor_id(void *proc, u32 * proc_id)
1914 struct proc_object *p_proc_object = (struct proc_object *)proc;
1917 *proc_id = p_proc_object->processor_id;