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/cfg.h>
33 #include <dspbridge/list.h>
34 #include <dspbridge/ntfy.h>
35 #include <dspbridge/sync.h>
36 /* ----------------------------------- Bridge Driver */
37 #include <dspbridge/dspdefs.h>
38 #include <dspbridge/dspdeh.h>
39 /* ----------------------------------- Platform Manager */
40 #include <dspbridge/cod.h>
41 #include <dspbridge/dev.h>
42 #include <dspbridge/procpriv.h>
43 #include <dspbridge/dmm.h>
45 /* ----------------------------------- Resource Manager */
46 #include <dspbridge/mgr.h>
47 #include <dspbridge/node.h>
48 #include <dspbridge/nldr.h>
49 #include <dspbridge/rmm.h>
51 /* ----------------------------------- Others */
52 #include <dspbridge/dbdcd.h>
53 #include <dspbridge/msg.h>
54 #include <dspbridge/dspioctl.h>
55 #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
;
285 DBC_REQUIRE(refs
> 0);
286 DBC_REQUIRE(ph_processor
!= NULL
);
288 if (pr_ctxt
->hprocessor
) {
289 *ph_processor
= pr_ctxt
->hprocessor
;
293 /* Get the Driver and Manager Object Handles */
294 status
= cfg_get_object((u32
*) &hdrv_obj
, REG_DRV_OBJECT
);
296 status
= cfg_get_object((u32
*) &hmgr_obj
, REG_MGR_OBJECT
);
299 /* Get the Device Object */
300 status
= drv_get_dev_object(processor_id
, hdrv_obj
, &hdev_obj
);
303 status
= dev_get_dev_type(hdev_obj
, &dev_type
);
308 /* If we made it this far, create the Proceesor object: */
309 p_proc_object
= kzalloc(sizeof(struct proc_object
), GFP_KERNEL
);
310 /* Fill out the Processor Object: */
311 if (p_proc_object
== NULL
) {
315 p_proc_object
->hdev_obj
= hdev_obj
;
316 p_proc_object
->hmgr_obj
= hmgr_obj
;
317 p_proc_object
->processor_id
= dev_type
;
318 /* Store TGID instead of process handle */
319 p_proc_object
->process
= current
->tgid
;
321 INIT_LIST_HEAD(&p_proc_object
->proc_list
);
324 p_proc_object
->utimeout
= attr_in
->utimeout
;
326 p_proc_object
->utimeout
= PROC_DFLT_TIMEOUT
;
328 status
= dev_get_intf_fxns(hdev_obj
, &p_proc_object
->intf_fxns
);
330 status
= dev_get_bridge_context(hdev_obj
,
331 &p_proc_object
->hbridge_context
);
333 kfree(p_proc_object
);
335 kfree(p_proc_object
);
340 /* Create the Notification Object */
341 /* This is created with no event mask, no notify mask
342 * and no valid handle to the notification. They all get
343 * filled up when proc_register_notify is called */
344 p_proc_object
->ntfy_obj
= kmalloc(sizeof(struct ntfy_object
),
346 if (p_proc_object
->ntfy_obj
)
347 ntfy_init(p_proc_object
->ntfy_obj
);
352 /* Insert the Processor Object into the DEV List.
353 * Return handle to this Processor Object:
354 * Find out if the Device is already attached to a
355 * Processor. If so, return AlreadyAttached status */
356 lst_init_elem(&p_proc_object
->link
);
357 status
= dev_insert_proc_object(p_proc_object
->hdev_obj
,
360 is_already_attached
);
362 if (p_proc_object
->is_already_attached
)
365 if (p_proc_object
->ntfy_obj
) {
366 ntfy_delete(p_proc_object
->ntfy_obj
);
367 kfree(p_proc_object
->ntfy_obj
);
370 kfree(p_proc_object
);
373 *ph_processor
= (void *)p_proc_object
;
374 pr_ctxt
->hprocessor
= *ph_processor
;
375 (void)proc_notify_clients(p_proc_object
,
376 DSP_PROCESSORATTACH
);
379 /* Don't leak memory if status is failed */
380 kfree(p_proc_object
);
383 DBC_ENSURE((status
== -EPERM
&& *ph_processor
== NULL
) ||
384 (!status
&& p_proc_object
) ||
385 (status
== 0 && p_proc_object
));
390 static int get_exec_file(struct cfg_devnode
*dev_node_obj
,
391 struct dev_object
*hdev_obj
,
392 u32 size
, char *exec_file
)
397 dev_get_dev_type(hdev_obj
, (u8
*) &dev_type
);
398 if (dev_type
== DSP_UNIT
) {
399 return cfg_get_exec_file(dev_node_obj
, size
, exec_file
);
400 } else if (dev_type
== IVA_UNIT
) {
402 len
= strlen(iva_img
);
403 strncpy(exec_file
, iva_img
, len
+ 1);
411 * ======== proc_auto_start ======== =
413 * A Particular device gets loaded with the default image
414 * if the AutoStart flag is set.
416 * hdev_obj: Handle to the Device
418 * 0: On Successful Loading
419 * -EPERM General Failure
424 int proc_auto_start(struct cfg_devnode
*dev_node_obj
,
425 struct dev_object
*hdev_obj
)
428 struct proc_object
*p_proc_object
;
429 char sz_exec_file
[MAXCMDLINELEN
];
431 struct mgr_object
*hmgr_obj
= NULL
;
434 DBC_REQUIRE(refs
> 0);
435 DBC_REQUIRE(dev_node_obj
!= NULL
);
436 DBC_REQUIRE(hdev_obj
!= NULL
);
438 /* Create a Dummy PROC Object */
439 status
= cfg_get_object((u32
*) &hmgr_obj
, REG_MGR_OBJECT
);
443 p_proc_object
= kzalloc(sizeof(struct proc_object
), GFP_KERNEL
);
444 if (p_proc_object
== NULL
) {
448 p_proc_object
->hdev_obj
= hdev_obj
;
449 p_proc_object
->hmgr_obj
= hmgr_obj
;
450 status
= dev_get_intf_fxns(hdev_obj
, &p_proc_object
->intf_fxns
);
452 status
= dev_get_bridge_context(hdev_obj
,
453 &p_proc_object
->hbridge_context
);
457 /* Stop the Device, put it into standby mode */
458 status
= proc_stop(p_proc_object
);
463 /* Get the default executable for this board... */
464 dev_get_dev_type(hdev_obj
, (u8
*) &dev_type
);
465 p_proc_object
->processor_id
= dev_type
;
466 status
= get_exec_file(dev_node_obj
, hdev_obj
, sizeof(sz_exec_file
),
469 argv
[0] = sz_exec_file
;
471 /* ...and try to load it: */
472 status
= proc_load(p_proc_object
, 1, (const char **)argv
, NULL
);
474 status
= proc_start(p_proc_object
);
476 kfree(p_proc_object
->psz_last_coff
);
477 p_proc_object
->psz_last_coff
= NULL
;
479 kfree(p_proc_object
);
485 * ======== proc_ctrl ========
487 * Pass control information to the GPP device driver managing the
490 * This will be an OEM-only function, and not part of the DSP/BIOS Bridge
491 * application developer's API.
492 * Call the bridge_dev_ctrl fxn with the Argument. This is a Synchronous
493 * Operation. arg can be null.
495 int proc_ctrl(void *hprocessor
, u32 dw_cmd
, struct dsp_cbdata
* arg
)
498 struct proc_object
*p_proc_object
= hprocessor
;
501 DBC_REQUIRE(refs
> 0);
504 /* intercept PWR deep sleep command */
505 if (dw_cmd
== BRDIOCTL_DEEPSLEEP
) {
506 timeout
= arg
->cb_data
;
507 status
= pwr_sleep_dsp(PWR_DEEPSLEEP
, timeout
);
509 /* intercept PWR emergency sleep command */
510 else if (dw_cmd
== BRDIOCTL_EMERGENCYSLEEP
) {
511 timeout
= arg
->cb_data
;
512 status
= pwr_sleep_dsp(PWR_EMERGENCYDEEPSLEEP
, timeout
);
513 } else if (dw_cmd
== PWR_DEEPSLEEP
) {
514 /* timeout = arg->cb_data; */
515 status
= pwr_sleep_dsp(PWR_DEEPSLEEP
, timeout
);
517 /* intercept PWR wake commands */
518 else if (dw_cmd
== BRDIOCTL_WAKEUP
) {
519 timeout
= arg
->cb_data
;
520 status
= pwr_wake_dsp(timeout
);
521 } else if (dw_cmd
== PWR_WAKEUP
) {
522 /* timeout = arg->cb_data; */
523 status
= pwr_wake_dsp(timeout
);
525 if (!((*p_proc_object
->intf_fxns
->pfn_dev_cntrl
)
526 (p_proc_object
->hbridge_context
, dw_cmd
,
540 * ======== proc_detach ========
542 * Destroys the Processor Object. Removes the notification from the Dev
545 int proc_detach(struct process_context
*pr_ctxt
)
548 struct proc_object
*p_proc_object
= NULL
;
550 DBC_REQUIRE(refs
> 0);
552 p_proc_object
= (struct proc_object
*)pr_ctxt
->hprocessor
;
555 /* Notify the Client */
556 ntfy_notify(p_proc_object
->ntfy_obj
, DSP_PROCESSORDETACH
);
557 /* Remove the notification memory */
558 if (p_proc_object
->ntfy_obj
) {
559 ntfy_delete(p_proc_object
->ntfy_obj
);
560 kfree(p_proc_object
->ntfy_obj
);
563 kfree(p_proc_object
->psz_last_coff
);
564 p_proc_object
->psz_last_coff
= NULL
;
565 /* Remove the Proc from the DEV List */
566 (void)dev_remove_proc_object(p_proc_object
->hdev_obj
,
567 (u32
) p_proc_object
);
568 /* Free the Processor Object */
569 kfree(p_proc_object
);
570 pr_ctxt
->hprocessor
= NULL
;
579 * ======== proc_enum_nodes ========
581 * Enumerate and get configuration information about nodes allocated
582 * on a DSP processor.
584 int proc_enum_nodes(void *hprocessor
, void **node_tab
,
585 u32 node_tab_size
, u32
*pu_num_nodes
,
589 struct proc_object
*p_proc_object
= (struct proc_object
*)hprocessor
;
590 struct node_mgr
*hnode_mgr
= NULL
;
592 DBC_REQUIRE(refs
> 0);
593 DBC_REQUIRE(node_tab
!= NULL
|| node_tab_size
== 0);
594 DBC_REQUIRE(pu_num_nodes
!= NULL
);
595 DBC_REQUIRE(pu_allocated
!= NULL
);
598 if (!(dev_get_node_manager(p_proc_object
->hdev_obj
,
601 status
= node_enum_nodes(hnode_mgr
, node_tab
,
614 /* Cache operation against kernel address instead of users */
615 static int build_dma_sg(struct dmm_map_object
*map_obj
, unsigned long start
,
616 ssize_t len
, int pg_i
)
619 unsigned long offset
;
622 struct scatterlist
*sg
= map_obj
->dma_info
.sg
;
625 page
= get_mapping_page(map_obj
, pg_i
);
627 pr_err("%s: no page for %08lx\n", __func__
, start
);
630 } else if (IS_ERR(page
)) {
631 pr_err("%s: err page for %08lx(%lu)\n", __func__
, start
,
637 offset
= start
& ~PAGE_MASK
;
638 rest
= min_t(ssize_t
, PAGE_SIZE
- offset
, len
);
640 sg_set_page(&sg
[i
], page
, rest
, offset
);
647 if (i
!= map_obj
->dma_info
.num_pages
) {
648 pr_err("%s: bad number of sg iterations\n", __func__
);
657 static int memory_regain_ownership(struct dmm_map_object
*map_obj
,
658 unsigned long start
, ssize_t len
, enum dma_data_direction dir
)
661 unsigned long first_data_page
= start
>> PAGE_SHIFT
;
662 unsigned long last_data_page
= ((u32
)(start
+ len
- 1) >> PAGE_SHIFT
);
663 /* calculating the number of pages this area spans */
664 unsigned long num_pages
= last_data_page
- first_data_page
+ 1;
665 struct bridge_dma_map_info
*dma_info
= &map_obj
->dma_info
;
670 if (dma_info
->dir
!= dir
|| dma_info
->num_pages
!= num_pages
) {
671 pr_err("%s: dma info doesn't match given params\n", __func__
);
675 dma_unmap_sg(bridge
, dma_info
->sg
, num_pages
, dma_info
->dir
);
677 pr_debug("%s: dma_map_sg unmapped\n", __func__
);
681 map_obj
->dma_info
.sg
= NULL
;
687 /* Cache operation against kernel address instead of users */
688 static int memory_give_ownership(struct dmm_map_object
*map_obj
,
689 unsigned long start
, ssize_t len
, enum dma_data_direction dir
)
691 int pg_i
, ret
, sg_num
;
692 struct scatterlist
*sg
;
693 unsigned long first_data_page
= start
>> PAGE_SHIFT
;
694 unsigned long last_data_page
= ((u32
)(start
+ len
- 1) >> PAGE_SHIFT
);
695 /* calculating the number of pages this area spans */
696 unsigned long num_pages
= last_data_page
- first_data_page
+ 1;
698 pg_i
= find_first_page_in_cache(map_obj
, start
);
700 pr_err("%s: failed to find first page in cache\n", __func__
);
705 sg
= kcalloc(num_pages
, sizeof(*sg
), GFP_KERNEL
);
707 pr_err("%s: kcalloc failed\n", __func__
);
712 sg_init_table(sg
, num_pages
);
714 /* cleanup a previous sg allocation */
715 /* this may happen if application doesn't signal for e/o DMA */
716 kfree(map_obj
->dma_info
.sg
);
718 map_obj
->dma_info
.sg
= sg
;
719 map_obj
->dma_info
.dir
= dir
;
720 map_obj
->dma_info
.num_pages
= num_pages
;
722 ret
= build_dma_sg(map_obj
, start
, len
, pg_i
);
726 sg_num
= dma_map_sg(bridge
, sg
, num_pages
, dir
);
728 pr_err("%s: dma_map_sg failed: %d\n", __func__
, sg_num
);
733 pr_debug("%s: dma_map_sg mapped %d elements\n", __func__
, sg_num
);
734 map_obj
->dma_info
.sg_num
= sg_num
;
740 map_obj
->dma_info
.sg
= NULL
;
745 int proc_begin_dma(void *hprocessor
, void *pmpu_addr
, u32 ul_size
,
746 enum dma_data_direction dir
)
748 /* Keep STATUS here for future additions to this function */
750 struct process_context
*pr_ctxt
= (struct process_context
*) hprocessor
;
751 struct dmm_map_object
*map_obj
;
753 DBC_REQUIRE(refs
> 0);
760 pr_debug("%s: addr 0x%x, size 0x%x, type %d\n", __func__
,
764 /* find requested memory are in cached mapping information */
765 map_obj
= find_containing_mapping(pr_ctxt
, (u32
) pmpu_addr
, ul_size
);
767 pr_err("%s: find_containing_mapping failed\n", __func__
);
772 if (memory_give_ownership(map_obj
, (u32
) pmpu_addr
, ul_size
, dir
)) {
773 pr_err("%s: InValid address parameters %p %x\n",
774 __func__
, pmpu_addr
, ul_size
);
783 int proc_end_dma(void *hprocessor
, void *pmpu_addr
, u32 ul_size
,
784 enum dma_data_direction dir
)
786 /* Keep STATUS here for future additions to this function */
788 struct process_context
*pr_ctxt
= (struct process_context
*) hprocessor
;
789 struct dmm_map_object
*map_obj
;
791 DBC_REQUIRE(refs
> 0);
798 pr_debug("%s: addr 0x%x, size 0x%x, type %d\n", __func__
,
802 /* find requested memory are in cached mapping information */
803 map_obj
= find_containing_mapping(pr_ctxt
, (u32
) pmpu_addr
, ul_size
);
805 pr_err("%s: find_containing_mapping failed\n", __func__
);
810 if (memory_regain_ownership(map_obj
, (u32
) pmpu_addr
, ul_size
, dir
)) {
811 pr_err("%s: InValid address parameters %p %x\n",
812 __func__
, pmpu_addr
, ul_size
);
822 * ======== proc_flush_memory ========
826 int proc_flush_memory(void *hprocessor
, void *pmpu_addr
,
827 u32 ul_size
, u32 ul_flags
)
829 enum dma_data_direction dir
= DMA_BIDIRECTIONAL
;
831 return proc_begin_dma(hprocessor
, pmpu_addr
, ul_size
, dir
);
835 * ======== proc_invalidate_memory ========
837 * Invalidates the memory specified
839 int proc_invalidate_memory(void *hprocessor
, void *pmpu_addr
, u32 size
)
841 enum dma_data_direction dir
= DMA_FROM_DEVICE
;
843 return proc_begin_dma(hprocessor
, pmpu_addr
, size
, dir
);
847 * ======== proc_get_resource_info ========
849 * Enumerate the resources currently available on a processor.
851 int proc_get_resource_info(void *hprocessor
, u32 resource_type
,
852 struct dsp_resourceinfo
*resource_info
,
853 u32 resource_info_size
)
856 struct proc_object
*p_proc_object
= (struct proc_object
*)hprocessor
;
857 struct node_mgr
*hnode_mgr
= NULL
;
858 struct nldr_object
*nldr_obj
= NULL
;
859 struct rmm_target_obj
*rmm
= NULL
;
860 struct io_mgr
*hio_mgr
= NULL
; /* IO manager handle */
862 DBC_REQUIRE(refs
> 0);
863 DBC_REQUIRE(resource_info
!= NULL
);
864 DBC_REQUIRE(resource_info_size
>= sizeof(struct dsp_resourceinfo
));
866 if (!p_proc_object
) {
870 switch (resource_type
) {
871 case DSP_RESOURCE_DYNDARAM
:
872 case DSP_RESOURCE_DYNSARAM
:
873 case DSP_RESOURCE_DYNEXTERNAL
:
874 case DSP_RESOURCE_DYNSRAM
:
875 status
= dev_get_node_manager(p_proc_object
->hdev_obj
,
882 status
= node_get_nldr_obj(hnode_mgr
, &nldr_obj
);
884 status
= nldr_get_rmm_manager(nldr_obj
, &rmm
);
887 (enum dsp_memtype
)resource_type
,
888 (struct dsp_memstat
*)
889 &(resource_info
->result
.
897 case DSP_RESOURCE_PROCLOAD
:
898 status
= dev_get_io_mgr(p_proc_object
->hdev_obj
, &hio_mgr
);
901 p_proc_object
->intf_fxns
->
902 pfn_io_get_proc_load(hio_mgr
,
903 (struct dsp_procloadstat
*)
904 &(resource_info
->result
.
918 * ======== proc_exit ========
920 * Decrement reference count, and free resources when reference count is
925 DBC_REQUIRE(refs
> 0);
929 DBC_ENSURE(refs
>= 0);
933 * ======== proc_get_dev_object ========
935 * Return the Dev Object handle for a given Processor.
938 int proc_get_dev_object(void *hprocessor
,
939 struct dev_object
**device_obj
)
942 struct proc_object
*p_proc_object
= (struct proc_object
*)hprocessor
;
944 DBC_REQUIRE(refs
> 0);
945 DBC_REQUIRE(device_obj
!= NULL
);
948 *device_obj
= p_proc_object
->hdev_obj
;
955 DBC_ENSURE((!status
&& *device_obj
!= NULL
) ||
956 (status
&& *device_obj
== NULL
));
962 * ======== proc_get_state ========
964 * Report the state of the specified DSP processor.
966 int proc_get_state(void *hprocessor
,
967 struct dsp_processorstate
*proc_state_obj
,
971 struct proc_object
*p_proc_object
= (struct proc_object
*)hprocessor
;
974 DBC_REQUIRE(refs
> 0);
975 DBC_REQUIRE(proc_state_obj
!= NULL
);
976 DBC_REQUIRE(state_info_size
>= sizeof(struct dsp_processorstate
));
979 /* First, retrieve BRD state information */
980 status
= (*p_proc_object
->intf_fxns
->pfn_brd_status
)
981 (p_proc_object
->hbridge_context
, &brd_status
);
983 switch (brd_status
) {
985 proc_state_obj
->proc_state
= PROC_STOPPED
;
987 case BRD_SLEEP_TRANSITION
:
988 case BRD_DSP_HIBERNATION
:
991 proc_state_obj
->proc_state
= PROC_RUNNING
;
994 proc_state_obj
->proc_state
= PROC_LOADED
;
997 proc_state_obj
->proc_state
= PROC_ERROR
;
1000 proc_state_obj
->proc_state
= 0xFF;
1008 dev_dbg(bridge
, "%s, results: status: 0x%x proc_state_obj: 0x%x\n",
1009 __func__
, status
, proc_state_obj
->proc_state
);
1014 * ======== proc_get_trace ========
1016 * Retrieve the current contents of the trace buffer, located on the
1017 * Processor. Predefined symbols for the trace buffer must have been
1018 * configured into the DSP executable.
1020 * We support using the symbols SYS_PUTCBEG and SYS_PUTCEND to define a
1021 * trace buffer, only. Treat it as an undocumented feature.
1022 * This call is destructive, meaning the processor is placed in the monitor
1023 * state as a result of this function.
1025 int proc_get_trace(void *hprocessor
, u8
* pbuf
, u32 max_size
)
1033 * ======== proc_init ========
1035 * Initialize PROC's private state, keeping a reference count on each call
1037 bool proc_init(void)
1041 DBC_REQUIRE(refs
>= 0);
1046 DBC_ENSURE((ret
&& (refs
> 0)) || (!ret
&& (refs
>= 0)));
1052 * ======== proc_load ========
1054 * Reset a processor and load a new base program image.
1055 * This will be an OEM-only function, and not part of the DSP/BIOS Bridge
1056 * application developer's API.
1058 int proc_load(void *hprocessor
, const s32 argc_index
,
1059 const char **user_args
, const char **user_envp
)
1062 struct proc_object
*p_proc_object
= (struct proc_object
*)hprocessor
;
1063 struct io_mgr
*hio_mgr
; /* IO manager handle */
1064 struct msg_mgr
*hmsg_mgr
;
1065 struct cod_manager
*cod_mgr
; /* Code manager handle */
1066 char *pargv0
; /* temp argv[0] ptr */
1067 char **new_envp
; /* Updated envp[] array. */
1068 char sz_proc_id
[MAXPROCIDLEN
]; /* Size of "PROC_ID=<n>" */
1069 s32 envp_elems
; /* Num elements in envp[]. */
1070 s32 cnew_envp
; /* " " in new_envp[] */
1071 s32 nproc_id
= 0; /* Anticipate MP version. */
1072 struct dcd_manager
*hdcd_handle
;
1073 struct dmm_object
*dmm_mgr
;
1077 struct drv_data
*drv_datap
= dev_get_drvdata(bridge
);
1079 #ifdef OPT_LOAD_TIME_INSTRUMENTATION
1084 #if defined(CONFIG_TIDSPBRIDGE_DVFS) && !defined(CONFIG_CPU_FREQ)
1085 struct dspbridge_platform_data
*pdata
=
1086 omap_dspbridge_dev
->dev
.platform_data
;
1089 DBC_REQUIRE(refs
> 0);
1090 DBC_REQUIRE(argc_index
> 0);
1091 DBC_REQUIRE(user_args
!= NULL
);
1093 #ifdef OPT_LOAD_TIME_INSTRUMENTATION
1094 do_gettimeofday(&tv1
);
1096 if (!p_proc_object
) {
1100 dev_get_cod_mgr(p_proc_object
->hdev_obj
, &cod_mgr
);
1105 status
= proc_stop(hprocessor
);
1109 /* Place the board in the monitor state. */
1110 status
= proc_monitor(hprocessor
);
1114 /* Save ptr to original argv[0]. */
1115 pargv0
= (char *)user_args
[0];
1116 /*Prepend "PROC_ID=<nproc_id>"to envp array for target. */
1117 envp_elems
= get_envp_count((char **)user_envp
);
1118 cnew_envp
= (envp_elems
? (envp_elems
+ 1) : (envp_elems
+ 2));
1119 new_envp
= kzalloc(cnew_envp
* sizeof(char **), GFP_KERNEL
);
1121 status
= snprintf(sz_proc_id
, MAXPROCIDLEN
, PROC_ENVPROCID
,
1124 dev_dbg(bridge
, "%s: Proc ID string overflow\n",
1129 prepend_envp(new_envp
, (char **)user_envp
,
1130 envp_elems
, cnew_envp
, sz_proc_id
);
1131 /* Get the DCD Handle */
1132 status
= mgr_get_dcd_handle(p_proc_object
->hmgr_obj
,
1133 (u32
*) &hdcd_handle
);
1135 /* Before proceeding with new load,
1136 * check if a previously registered COFF
1138 * If yes, unregister nodes in previously
1139 * registered COFF. If any error occurred,
1140 * set previously registered COFF to NULL. */
1141 if (p_proc_object
->psz_last_coff
!= NULL
) {
1143 dcd_auto_unregister(hdcd_handle
,
1146 /* Regardless of auto unregister status,
1147 * free previously allocated
1149 kfree(p_proc_object
->psz_last_coff
);
1150 p_proc_object
->psz_last_coff
= NULL
;
1153 /* On success, do cod_open_base() */
1154 status
= cod_open_base(cod_mgr
, (char *)user_args
[0],
1161 /* Auto-register data base */
1162 /* Get the DCD Handle */
1163 status
= mgr_get_dcd_handle(p_proc_object
->hmgr_obj
,
1164 (u32
*) &hdcd_handle
);
1166 /* Auto register nodes in specified COFF
1167 * file. If registration did not fail,
1168 * (status = 0 or -EACCES)
1169 * save the name of the COFF file for
1170 * de-registration in the future. */
1172 dcd_auto_register(hdcd_handle
,
1173 (char *)user_args
[0]);
1174 if (status
== -EACCES
)
1180 DBC_ASSERT(p_proc_object
->psz_last_coff
==
1182 /* Allocate memory for pszLastCoff */
1183 p_proc_object
->psz_last_coff
=
1184 kzalloc((strlen(user_args
[0]) +
1186 /* If memory allocated, save COFF file name */
1187 if (p_proc_object
->psz_last_coff
) {
1188 strncpy(p_proc_object
->psz_last_coff
,
1189 (char *)user_args
[0],
1190 (strlen((char *)user_args
[0]) +
1196 /* Update shared memory address and size */
1198 /* Create the message manager. This must be done
1199 * before calling the IOOnLoaded function. */
1200 dev_get_msg_mgr(p_proc_object
->hdev_obj
, &hmsg_mgr
);
1202 status
= msg_create(&hmsg_mgr
, p_proc_object
->hdev_obj
,
1203 (msg_onexit
) node_on_exit
);
1204 DBC_ASSERT(!status
);
1205 dev_set_msg_mgr(p_proc_object
->hdev_obj
, hmsg_mgr
);
1209 /* Set the Device object's message manager */
1210 status
= dev_get_io_mgr(p_proc_object
->hdev_obj
, &hio_mgr
);
1212 status
= (*p_proc_object
->intf_fxns
->pfn_io_on_loaded
)
1218 /* Now, attempt to load an exec: */
1220 /* Boost the OPP level to Maximum level supported by baseport */
1221 #if defined(CONFIG_TIDSPBRIDGE_DVFS) && !defined(CONFIG_CPU_FREQ)
1222 if (pdata
->cpu_set_freq
)
1223 (*pdata
->cpu_set_freq
) (pdata
->mpu_speed
[VDD1_OPP5
]);
1225 status
= cod_load_base(cod_mgr
, argc_index
, (char **)user_args
,
1227 p_proc_object
->hdev_obj
, NULL
);
1229 if (status
== -EBADF
) {
1230 dev_dbg(bridge
, "%s: Failure to Load the EXE\n",
1233 if (status
== -ESPIPE
) {
1234 pr_err("%s: Couldn't parse the file\n",
1238 /* Requesting the lowest opp supported */
1239 #if defined(CONFIG_TIDSPBRIDGE_DVFS) && !defined(CONFIG_CPU_FREQ)
1240 if (pdata
->cpu_set_freq
)
1241 (*pdata
->cpu_set_freq
) (pdata
->mpu_speed
[VDD1_OPP1
]);
1246 /* Update the Processor status to loaded */
1247 status
= (*p_proc_object
->intf_fxns
->pfn_brd_set_state
)
1248 (p_proc_object
->hbridge_context
, BRD_LOADED
);
1250 p_proc_object
->proc_state
= PROC_LOADED
;
1251 if (p_proc_object
->ntfy_obj
)
1252 proc_notify_clients(p_proc_object
,
1253 DSP_PROCESSORSTATECHANGE
);
1257 status
= proc_get_processor_id(hprocessor
, &proc_id
);
1258 if (proc_id
== DSP_UNIT
) {
1259 /* Use all available DSP address space after EXTMEM
1262 status
= cod_get_sym_value(cod_mgr
, EXTEND
,
1265 /* Reset DMM structs and add an initial free chunk */
1268 dev_get_dmm_mgr(p_proc_object
->hdev_obj
,
1271 /* Set dw_ext_end to DMM START u8
1274 (dw_ext_end
+ 1) * DSPWORDSIZE
;
1275 /* DMM memory is from EXT_END */
1276 status
= dmm_create_tables(dmm_mgr
,
1285 /* Restore the original argv[0] */
1287 user_args
[0] = pargv0
;
1289 if (!((*p_proc_object
->intf_fxns
->pfn_brd_status
)
1290 (p_proc_object
->hbridge_context
, &brd_state
))) {
1291 pr_info("%s: Processor Loaded %s\n", __func__
, pargv0
);
1292 kfree(drv_datap
->base_img
);
1293 drv_datap
->base_img
= kmalloc(strlen(pargv0
) + 1,
1295 if (drv_datap
->base_img
)
1296 strncpy(drv_datap
->base_img
, pargv0
,
1297 strlen(pargv0
) + 1);
1300 DBC_ASSERT(brd_state
== BRD_LOADED
);
1306 pr_err("%s: Processor failed to load\n", __func__
);
1307 proc_stop(p_proc_object
);
1310 && p_proc_object
->proc_state
== PROC_LOADED
)
1312 #ifdef OPT_LOAD_TIME_INSTRUMENTATION
1313 do_gettimeofday(&tv2
);
1314 if (tv2
.tv_usec
< tv1
.tv_usec
) {
1315 tv2
.tv_usec
+= 1000000;
1318 dev_dbg(bridge
, "%s: time to load %d sec and %d usec\n", __func__
,
1319 tv2
.tv_sec
- tv1
.tv_sec
, tv2
.tv_usec
- tv1
.tv_usec
);
1325 * ======== proc_map ========
1327 * Maps a MPU buffer to DSP address space.
1329 int proc_map(void *hprocessor
, void *pmpu_addr
, u32 ul_size
,
1330 void *req_addr
, void **pp_map_addr
, u32 ul_map_attr
,
1331 struct process_context
*pr_ctxt
)
1335 struct dmm_object
*dmm_mgr
;
1338 struct proc_object
*p_proc_object
= (struct proc_object
*)hprocessor
;
1339 struct dmm_map_object
*map_obj
;
1342 #ifdef CONFIG_TIDSPBRIDGE_CACHE_LINE_CHECK
1343 if ((ul_map_attr
& BUFMODE_MASK
) != RBUF
) {
1344 if (!IS_ALIGNED((u32
)pmpu_addr
, DSP_CACHE_LINE
) ||
1345 !IS_ALIGNED(ul_size
, DSP_CACHE_LINE
)) {
1346 pr_err("%s: not aligned: 0x%x (%d)\n", __func__
,
1347 (u32
)pmpu_addr
, ul_size
);
1353 /* Calculate the page-aligned PA, VA and size */
1354 va_align
= PG_ALIGN_LOW((u32
) req_addr
, PG_SIZE4K
);
1355 pa_align
= PG_ALIGN_LOW((u32
) pmpu_addr
, PG_SIZE4K
);
1356 size_align
= PG_ALIGN_HIGH(ul_size
+ (u32
) pmpu_addr
- pa_align
,
1359 if (!p_proc_object
) {
1363 /* Critical section */
1364 mutex_lock(&proc_lock
);
1365 dmm_get_handle(p_proc_object
, &dmm_mgr
);
1367 status
= dmm_map_memory(dmm_mgr
, va_align
, size_align
);
1371 /* Add mapping to the page tables. */
1374 /* Mapped address = MSB of VA | LSB of PA */
1375 tmp_addr
= (va_align
| ((u32
) pmpu_addr
& (PG_SIZE4K
- 1)));
1376 /* mapped memory resource tracking */
1377 map_obj
= add_mapping_info(pr_ctxt
, pa_align
, tmp_addr
,
1382 status
= (*p_proc_object
->intf_fxns
->pfn_brd_mem_map
)
1383 (p_proc_object
->hbridge_context
, pa_align
, va_align
,
1384 size_align
, ul_map_attr
, map_obj
->pages
);
1387 /* Mapped address = MSB of VA | LSB of PA */
1388 *pp_map_addr
= (void *) tmp_addr
;
1390 remove_mapping_information(pr_ctxt
, tmp_addr
, size_align
);
1391 dmm_un_map_memory(dmm_mgr
, va_align
, &size_align
);
1393 mutex_unlock(&proc_lock
);
1399 dev_dbg(bridge
, "%s: hprocessor %p, pmpu_addr %p, ul_size %x, "
1400 "req_addr %p, ul_map_attr %x, pp_map_addr %p, va_align %x, "
1401 "pa_align %x, size_align %x status 0x%x\n", __func__
,
1402 hprocessor
, pmpu_addr
, ul_size
, req_addr
, ul_map_attr
,
1403 pp_map_addr
, va_align
, pa_align
, size_align
, status
);
1409 * ======== proc_register_notify ========
1411 * Register to be notified of specific processor events.
1413 int proc_register_notify(void *hprocessor
, u32 event_mask
,
1414 u32 notify_type
, struct dsp_notification
1418 struct proc_object
*p_proc_object
= (struct proc_object
*)hprocessor
;
1419 struct deh_mgr
*hdeh_mgr
;
1421 DBC_REQUIRE(hnotification
!= NULL
);
1422 DBC_REQUIRE(refs
> 0);
1424 /* Check processor handle */
1425 if (!p_proc_object
) {
1429 /* Check if event mask is a valid processor related event */
1430 if (event_mask
& ~(DSP_PROCESSORSTATECHANGE
| DSP_PROCESSORATTACH
|
1431 DSP_PROCESSORDETACH
| DSP_PROCESSORRESTART
|
1432 DSP_MMUFAULT
| DSP_SYSERROR
| DSP_PWRERROR
|
1436 /* Check if notify type is valid */
1437 if (notify_type
!= DSP_SIGNALEVENT
)
1441 /* If event mask is not DSP_SYSERROR, DSP_MMUFAULT,
1442 * or DSP_PWRERROR then register event immediately. */
1444 ~(DSP_SYSERROR
| DSP_MMUFAULT
| DSP_PWRERROR
|
1446 status
= ntfy_register(p_proc_object
->ntfy_obj
,
1447 hnotification
, event_mask
,
1449 /* Special case alert, special case alert!
1450 * If we're trying to *deregister* (i.e. event_mask
1451 * is 0), a DSP_SYSERROR or DSP_MMUFAULT notification,
1452 * we have to deregister with the DEH manager.
1453 * There's no way to know, based on event_mask which
1454 * manager the notification event was registered with,
1455 * so if we're trying to deregister and ntfy_register
1456 * failed, we'll give the deh manager a shot.
1458 if ((event_mask
== 0) && status
) {
1460 dev_get_deh_mgr(p_proc_object
->hdev_obj
,
1463 bridge_deh_register_notify(hdeh_mgr
,
1469 status
= dev_get_deh_mgr(p_proc_object
->hdev_obj
,
1472 bridge_deh_register_notify(hdeh_mgr
,
1484 * ======== proc_reserve_memory ========
1486 * Reserve a virtually contiguous region of DSP address space.
1488 int proc_reserve_memory(void *hprocessor
, u32 ul_size
,
1490 struct process_context
*pr_ctxt
)
1492 struct dmm_object
*dmm_mgr
;
1494 struct proc_object
*p_proc_object
= (struct proc_object
*)hprocessor
;
1495 struct dmm_rsv_object
*rsv_obj
;
1497 if (!p_proc_object
) {
1502 status
= dmm_get_handle(p_proc_object
, &dmm_mgr
);
1508 status
= dmm_reserve_memory(dmm_mgr
, ul_size
, (u32
*) pp_rsv_addr
);
1513 * A successful reserve should be followed by insertion of rsv_obj
1514 * into dmm_rsv_list, so that reserved memory resource tracking
1517 rsv_obj
= kmalloc(sizeof(struct dmm_rsv_object
), GFP_KERNEL
);
1519 rsv_obj
->dsp_reserved_addr
= (u32
) *pp_rsv_addr
;
1520 spin_lock(&pr_ctxt
->dmm_rsv_lock
);
1521 list_add(&rsv_obj
->link
, &pr_ctxt
->dmm_rsv_list
);
1522 spin_unlock(&pr_ctxt
->dmm_rsv_lock
);
1526 dev_dbg(bridge
, "%s: hprocessor: 0x%p ul_size: 0x%x pp_rsv_addr: 0x%p "
1527 "status 0x%x\n", __func__
, hprocessor
,
1528 ul_size
, pp_rsv_addr
, status
);
1533 * ======== proc_start ========
1535 * Start a processor running.
1537 int proc_start(void *hprocessor
)
1540 struct proc_object
*p_proc_object
= (struct proc_object
*)hprocessor
;
1541 struct cod_manager
*cod_mgr
; /* Code manager handle */
1542 u32 dw_dsp_addr
; /* Loaded code's entry point. */
1545 DBC_REQUIRE(refs
> 0);
1546 if (!p_proc_object
) {
1550 /* Call the bridge_brd_start */
1551 if (p_proc_object
->proc_state
!= PROC_LOADED
) {
1555 status
= dev_get_cod_mgr(p_proc_object
->hdev_obj
, &cod_mgr
);
1561 status
= cod_get_entry(cod_mgr
, &dw_dsp_addr
);
1565 status
= (*p_proc_object
->intf_fxns
->pfn_brd_start
)
1566 (p_proc_object
->hbridge_context
, dw_dsp_addr
);
1570 /* Call dev_create2 */
1571 status
= dev_create2(p_proc_object
->hdev_obj
);
1573 p_proc_object
->proc_state
= PROC_RUNNING
;
1574 /* Deep sleep switces off the peripheral clocks.
1575 * we just put the DSP CPU in idle in the idle loop.
1576 * so there is no need to send a command to DSP */
1578 if (p_proc_object
->ntfy_obj
) {
1579 proc_notify_clients(p_proc_object
,
1580 DSP_PROCESSORSTATECHANGE
);
1583 /* Failed to Create Node Manager and DISP Object
1584 * Stop the Processor from running. Put it in STOPPED State */
1585 (void)(*p_proc_object
->intf_fxns
->
1586 pfn_brd_stop
) (p_proc_object
->hbridge_context
);
1587 p_proc_object
->proc_state
= PROC_STOPPED
;
1591 if (!((*p_proc_object
->intf_fxns
->pfn_brd_status
)
1592 (p_proc_object
->hbridge_context
, &brd_state
))) {
1593 pr_info("%s: dsp in running state\n", __func__
);
1594 DBC_ASSERT(brd_state
!= BRD_HIBERNATION
);
1597 pr_err("%s: Failed to start the dsp\n", __func__
);
1598 proc_stop(p_proc_object
);
1602 DBC_ENSURE((!status
&& p_proc_object
->proc_state
==
1603 PROC_RUNNING
) || status
);
1608 * ======== proc_stop ========
1610 * Stop a processor running.
1612 int proc_stop(void *hprocessor
)
1615 struct proc_object
*p_proc_object
= (struct proc_object
*)hprocessor
;
1616 struct msg_mgr
*hmsg_mgr
;
1617 struct node_mgr
*hnode_mgr
;
1619 u32 node_tab_size
= 1;
1621 u32 nodes_allocated
= 0;
1624 DBC_REQUIRE(refs
> 0);
1625 if (!p_proc_object
) {
1629 /* check if there are any running nodes */
1630 status
= dev_get_node_manager(p_proc_object
->hdev_obj
, &hnode_mgr
);
1631 if (!status
&& hnode_mgr
) {
1632 status
= node_enum_nodes(hnode_mgr
, &hnode
, node_tab_size
,
1633 &num_nodes
, &nodes_allocated
);
1634 if ((status
== -EINVAL
) || (nodes_allocated
> 0)) {
1635 pr_err("%s: Can't stop device, active nodes = %d \n",
1636 __func__
, nodes_allocated
);
1640 /* Call the bridge_brd_stop */
1641 /* It is OK to stop a device that does n't have nodes OR not started */
1643 (*p_proc_object
->intf_fxns
->
1644 pfn_brd_stop
) (p_proc_object
->hbridge_context
);
1646 dev_dbg(bridge
, "%s: processor in standby mode\n", __func__
);
1647 p_proc_object
->proc_state
= PROC_STOPPED
;
1648 /* Destory the Node Manager, msg_ctrl Manager */
1649 if (!(dev_destroy2(p_proc_object
->hdev_obj
))) {
1650 /* Destroy the msg_ctrl by calling msg_delete */
1651 dev_get_msg_mgr(p_proc_object
->hdev_obj
, &hmsg_mgr
);
1653 msg_delete(hmsg_mgr
);
1654 dev_set_msg_mgr(p_proc_object
->hdev_obj
, NULL
);
1656 if (!((*p_proc_object
->
1657 intf_fxns
->pfn_brd_status
) (p_proc_object
->
1660 DBC_ASSERT(brd_state
== BRD_STOPPED
);
1663 pr_err("%s: Failed to stop the processor\n", __func__
);
1671 * ======== proc_un_map ========
1673 * Removes a MPU buffer mapping from the DSP address space.
1675 int proc_un_map(void *hprocessor
, void *map_addr
,
1676 struct process_context
*pr_ctxt
)
1679 struct proc_object
*p_proc_object
= (struct proc_object
*)hprocessor
;
1680 struct dmm_object
*dmm_mgr
;
1684 va_align
= PG_ALIGN_LOW((u32
) map_addr
, PG_SIZE4K
);
1685 if (!p_proc_object
) {
1690 status
= dmm_get_handle(hprocessor
, &dmm_mgr
);
1696 /* Critical section */
1697 mutex_lock(&proc_lock
);
1699 * Update DMM structures. Get the size to unmap.
1700 * This function returns error if the VA is not mapped
1702 status
= dmm_un_map_memory(dmm_mgr
, (u32
) va_align
, &size_align
);
1703 /* Remove mapping from the page tables. */
1705 status
= (*p_proc_object
->intf_fxns
->pfn_brd_mem_un_map
)
1706 (p_proc_object
->hbridge_context
, va_align
, size_align
);
1709 mutex_unlock(&proc_lock
);
1714 * A successful unmap should be followed by removal of map_obj
1715 * from dmm_map_list, so that mapped memory resource tracking
1718 remove_mapping_information(pr_ctxt
, (u32
) map_addr
, size_align
);
1721 dev_dbg(bridge
, "%s: hprocessor: 0x%p map_addr: 0x%p status: 0x%x\n",
1722 __func__
, hprocessor
, map_addr
, status
);
1727 * ======== proc_un_reserve_memory ========
1729 * Frees a previously reserved region of DSP address space.
1731 int proc_un_reserve_memory(void *hprocessor
, void *prsv_addr
,
1732 struct process_context
*pr_ctxt
)
1734 struct dmm_object
*dmm_mgr
;
1736 struct proc_object
*p_proc_object
= (struct proc_object
*)hprocessor
;
1737 struct dmm_rsv_object
*rsv_obj
;
1739 if (!p_proc_object
) {
1744 status
= dmm_get_handle(p_proc_object
, &dmm_mgr
);
1750 status
= dmm_un_reserve_memory(dmm_mgr
, (u32
) prsv_addr
);
1755 * A successful unreserve should be followed by removal of rsv_obj
1756 * from dmm_rsv_list, so that reserved memory resource tracking
1759 spin_lock(&pr_ctxt
->dmm_rsv_lock
);
1760 list_for_each_entry(rsv_obj
, &pr_ctxt
->dmm_rsv_list
, link
) {
1761 if (rsv_obj
->dsp_reserved_addr
== (u32
) prsv_addr
) {
1762 list_del(&rsv_obj
->link
);
1767 spin_unlock(&pr_ctxt
->dmm_rsv_lock
);
1770 dev_dbg(bridge
, "%s: hprocessor: 0x%p prsv_addr: 0x%p status: 0x%x\n",
1771 __func__
, hprocessor
, prsv_addr
, status
);
1776 * ======== = proc_monitor ======== ==
1778 * Place the Processor in Monitor State. This is an internal
1779 * function and a requirement before Processor is loaded.
1780 * This does a bridge_brd_stop, dev_destroy2 and bridge_brd_monitor.
1781 * In dev_destroy2 we delete the node manager.
1783 * p_proc_object: Pointer to Processor Object
1785 * 0: Processor placed in monitor mode.
1786 * !0: Failed to place processor in monitor mode.
1788 * Valid Processor Handle
1790 * Success: ProcObject state is PROC_IDLE
1792 static int proc_monitor(struct proc_object
*proc_obj
)
1794 int status
= -EPERM
;
1795 struct msg_mgr
*hmsg_mgr
;
1798 DBC_REQUIRE(refs
> 0);
1799 DBC_REQUIRE(proc_obj
);
1801 /* This is needed only when Device is loaded when it is
1802 * already 'ACTIVE' */
1803 /* Destory the Node Manager, msg_ctrl Manager */
1804 if (!dev_destroy2(proc_obj
->hdev_obj
)) {
1805 /* Destroy the msg_ctrl by calling msg_delete */
1806 dev_get_msg_mgr(proc_obj
->hdev_obj
, &hmsg_mgr
);
1808 msg_delete(hmsg_mgr
);
1809 dev_set_msg_mgr(proc_obj
->hdev_obj
, NULL
);
1812 /* Place the Board in the Monitor State */
1813 if (!((*proc_obj
->intf_fxns
->pfn_brd_monitor
)
1814 (proc_obj
->hbridge_context
))) {
1816 if (!((*proc_obj
->intf_fxns
->pfn_brd_status
)
1817 (proc_obj
->hbridge_context
, &brd_state
)))
1818 DBC_ASSERT(brd_state
== BRD_IDLE
);
1821 DBC_ENSURE((!status
&& brd_state
== BRD_IDLE
) ||
1827 * ======== get_envp_count ========
1829 * Return the number of elements in the envp array, including the
1830 * terminating NULL element.
1832 static s32
get_envp_count(char **envp
)
1839 ret
+= 1; /* Include the terminating NULL in the count. */
1846 * ======== prepend_envp ========
1848 * Prepend an environment variable=value pair to the new envp array, and
1849 * copy in the existing var=value pairs in the old envp array.
1851 static char **prepend_envp(char **new_envp
, char **envp
, s32 envp_elems
,
1852 s32 cnew_envp
, char *sz_var
)
1854 char **pp_envp
= new_envp
;
1856 DBC_REQUIRE(new_envp
);
1858 /* Prepend new environ var=value string */
1859 *new_envp
++ = sz_var
;
1861 /* Copy user's environment into our own. */
1862 while (envp_elems
--)
1863 *new_envp
++ = *envp
++;
1865 /* Ensure NULL terminates the new environment strings array. */
1866 if (envp_elems
== 0)
1873 * ======== proc_notify_clients ========
1875 * Notify the processor the events.
1877 int proc_notify_clients(void *proc
, u32 events
)
1880 struct proc_object
*p_proc_object
= (struct proc_object
*)proc
;
1882 DBC_REQUIRE(p_proc_object
);
1883 DBC_REQUIRE(is_valid_proc_event(events
));
1884 DBC_REQUIRE(refs
> 0);
1885 if (!p_proc_object
) {
1890 ntfy_notify(p_proc_object
->ntfy_obj
, events
);
1896 * ======== proc_notify_all_clients ========
1898 * Notify the processor the events. This includes notifying all clients
1899 * attached to a particulat DSP.
1901 int proc_notify_all_clients(void *proc
, u32 events
)
1904 struct proc_object
*p_proc_object
= (struct proc_object
*)proc
;
1906 DBC_REQUIRE(is_valid_proc_event(events
));
1907 DBC_REQUIRE(refs
> 0);
1909 if (!p_proc_object
) {
1914 dev_notify_clients(p_proc_object
->hdev_obj
, events
);
1921 * ======== proc_get_processor_id ========
1923 * Retrieves the processor ID.
1925 int proc_get_processor_id(void *proc
, u32
* proc_id
)
1928 struct proc_object
*p_proc_object
= (struct proc_object
*)proc
;
1931 *proc_id
= p_proc_object
->processor_id
;