[ARM] msm: smd: add support for DSP SMD channels
- QSD8250 has a DSP that speaks SMD, in addition to the modem
- handle a separate list of modem vs dsp channels
- install dsp smd irq handler as necessary
Signed-off-by: Brian Swetland <swetland@google.com>
Signed-off-by: Daniel Walker <dwalker@codeaurora.org>
diff --git a/arch/arm/mach-msm/smd.c b/arch/arm/mach-msm/smd.c
index 1aaee4d..a88a8fc 100644
--- a/arch/arm/mach-msm/smd.c
+++ b/arch/arm/mach-msm/smd.c
@@ -35,6 +35,10 @@
#include "smd_private.h"
#include "proc_comm.h"
+#if defined(CONFIG_ARCH_QSD8X50)
+#define CONFIG_QDSP6 1
+#endif
+
void (*msm_hw_reset_hook)(void);
#define MODULE_NAME "msm_smd"
@@ -70,6 +74,9 @@
static inline void notify_other_smsm(void)
{
writel(1, MSM_A2M_INT(5));
+#ifdef CONFIG_QDSP6
+ writel(1, MSM_A2M_INT(8));
+#endif
}
static inline void notify_modem_smd(void)
@@ -140,7 +147,8 @@
static int smd_initialized;
LIST_HEAD(smd_ch_closed_list);
-LIST_HEAD(smd_ch_list); /* todo: per-target lists */
+LIST_HEAD(smd_ch_list_modem);
+LIST_HEAD(smd_ch_list_dsp);
static unsigned char smd_ch_allocated[64];
static struct work_struct probe_work;
@@ -150,6 +158,7 @@
static void smd_channel_probe_worker(struct work_struct *work)
{
struct smd_alloc_elm *shared;
+ unsigned ctype;
unsigned type;
unsigned n;
@@ -165,12 +174,19 @@
continue;
if (!shared[n].name[0])
continue;
+ ctype = shared[n].ctype;
+ type = ctype & SMD_TYPE_MASK;
+
+ /* DAL channels are stream but neither the modem,
+ * nor the DSP correctly indicate this. Fixup manually.
+ */
+ if (!memcmp(shared[n].name, "DAL", 3))
+ ctype = (ctype & (~SMD_KIND_MASK)) | SMD_KIND_STREAM;
+
type = shared[n].ctype & SMD_TYPE_MASK;
if ((type == SMD_TYPE_APPS_MODEM) ||
(type == SMD_TYPE_APPS_DSP))
- smd_alloc_channel(shared[n].name,
- shared[n].cid,
- shared[n].ctype);
+ smd_alloc_channel(shared[n].name, shared[n].cid, ctype);
smd_ch_allocated[n] = 1;
}
}
@@ -403,67 +419,59 @@
do_smd_probe();
}
-static irqreturn_t smd_irq_handler(int irq, void *data)
+static irqreturn_t smd_modem_irq_handler(int irq, void *data)
{
- handle_smd_irq(&smd_ch_list, notify_modem_smd);
+ handle_smd_irq(&smd_ch_list_modem, notify_modem_smd);
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t smd_dsp_irq_handler(int irq, void *data)
+{
+ handle_smd_irq(&smd_ch_list_dsp, notify_dsp_smd);
return IRQ_HANDLED;
}
static void smd_fake_irq_handler(unsigned long arg)
{
- smd_irq_handler(0, NULL);
+ handle_smd_irq(&smd_ch_list_modem, notify_modem_smd);
+ handle_smd_irq(&smd_ch_list_dsp, notify_dsp_smd);
}
static DECLARE_TASKLET(smd_fake_irq_tasklet, smd_fake_irq_handler, 0);
+static inline int smd_need_int(struct smd_channel *ch)
+{
+ if (ch_is_open(ch)) {
+ if (ch->recv->fHEAD || ch->recv->fTAIL || ch->recv->fSTATE)
+ return 1;
+ if (ch->recv->state != ch->last_state)
+ return 1;
+ }
+ return 0;
+}
+
void smd_sleep_exit(void)
{
unsigned long flags;
struct smd_channel *ch;
- unsigned tmp;
int need_int = 0;
spin_lock_irqsave(&smd_lock, flags);
- list_for_each_entry(ch, &smd_ch_list, ch_list) {
- if (ch_is_open(ch)) {
- if (ch->recv->fHEAD) {
- if (msm_smd_debug_mask & MSM_SMD_DEBUG)
- pr_info("smd_sleep_exit ch %d fHEAD "
- "%x %x %x\n",
- ch->n, ch->recv->fHEAD,
- ch->recv->head, ch->recv->tail);
- need_int = 1;
- break;
- }
- if (ch->recv->fTAIL) {
- if (msm_smd_debug_mask & MSM_SMD_DEBUG)
- pr_info("smd_sleep_exit ch %d fTAIL "
- "%x %x %x\n",
- ch->n, ch->recv->fTAIL,
- ch->send->head, ch->send->tail);
- need_int = 1;
- break;
- }
- if (ch->recv->fSTATE) {
- if (msm_smd_debug_mask & MSM_SMD_DEBUG)
- pr_info("smd_sleep_exit ch %d fSTATE %x"
- "\n", ch->n, ch->recv->fSTATE);
- need_int = 1;
- break;
- }
- tmp = ch->recv->state;
- if (tmp != ch->last_state) {
- if (msm_smd_debug_mask & MSM_SMD_DEBUG)
- pr_info("smd_sleep_exit ch %d "
- "state %x != %x\n",
- ch->n, tmp, ch->last_state);
- need_int = 1;
- break;
- }
+ list_for_each_entry(ch, &smd_ch_list_modem, ch_list) {
+ if (smd_need_int(ch)) {
+ need_int = 1;
+ break;
+ }
+ }
+ list_for_each_entry(ch, &smd_ch_list_dsp, ch_list) {
+ if (smd_need_int(ch)) {
+ need_int = 1;
+ break;
}
}
spin_unlock_irqrestore(&smd_lock, flags);
do_smd_probe();
+
if (need_int) {
if (msm_smd_debug_mask & MSM_SMD_DEBUG)
pr_info("smd_sleep_exit need interrupt\n");
@@ -737,7 +745,11 @@
*_ch = ch;
spin_lock_irqsave(&smd_lock, flags);
- list_add(&ch->ch_list, &smd_ch_list);
+
+ if ((ch->type & SMD_TYPE_MASK) == SMD_TYPE_APPS_MODEM)
+ list_add(&ch->ch_list, &smd_ch_list_modem);
+ else
+ list_add(&ch->ch_list, &smd_ch_list_dsp);
/* If the remote side is CLOSING, we need to get it to
* move to OPENING (which we'll do by moving from CLOSED to
@@ -982,7 +994,7 @@
smd_info.ready = 1;
- r = request_irq(INT_A9_M2A_0, smd_irq_handler,
+ r = request_irq(INT_A9_M2A_0, smd_modem_irq_handler,
IRQF_TRIGGER_RISING, "smd_dev", 0);
if (r < 0)
return r;
@@ -1000,6 +1012,16 @@
if (r < 0)
pr_err("smd_core_init: enable_irq_wake failed for A9_M2A_5\n");
+#if defined(CONFIG_QDSP6)
+ r = request_irq(INT_ADSP_A11, smd_dsp_irq_handler,
+ IRQF_TRIGGER_RISING, "smd_dsp", 0);
+ if (r < 0) {
+ free_irq(INT_A9_M2A_0, 0);
+ free_irq(INT_A9_M2A_5, 0);
+ return r;
+ }
+#endif
+
/* check for any SMD channels that may already exist */
do_smd_probe();
diff --git a/arch/arm/mach-msm/smd_debug.c b/arch/arm/mach-msm/smd_debug.c
index 3bb40a7fa..0cc3ef8 100644
--- a/arch/arm/mach-msm/smd_debug.c
+++ b/arch/arm/mach-msm/smd_debug.c
@@ -55,7 +55,7 @@
buf, max,
"ch%02d:"
" %8s(%05d/%05d) %c%c%c%c%c%c%c <->"
- " %8s(%05d/%05d) %c%c%c%c%c%c%c\n", ch->n,
+ " %8s(%05d/%05d) %c%c%c%c%c%c%c '%s'\n", ch->n,
chstate(s->state), s->tail, s->head,
s->fDSR ? 'D' : 'd',
s->fCTS ? 'C' : 'c',
@@ -71,7 +71,8 @@
r->fRI ? 'I' : 'i',
r->fHEAD ? 'W' : 'w',
r->fTAIL ? 'R' : 'r',
- r->fSTATE ? 'S' : 's'
+ r->fSTATE ? 'S' : 's',
+ ch->name
);
}
@@ -135,7 +136,9 @@
int i = 0;
spin_lock_irqsave(&smd_lock, flags);
- list_for_each_entry(ch, &smd_ch_list, ch_list)
+ list_for_each_entry(ch, &smd_ch_list_dsp, ch_list)
+ i += dump_ch(buf + i, max - i, ch);
+ list_for_each_entry(ch, &smd_ch_list_modem, ch_list)
i += dump_ch(buf + i, max - i, ch);
list_for_each_entry(ch, &smd_ch_closed_list, ch_list)
i += dump_ch(buf + i, max - i, ch);
diff --git a/arch/arm/mach-msm/smd_private.h b/arch/arm/mach-msm/smd_private.h
index 13d7c9d..5a8831c 100644
--- a/arch/arm/mach-msm/smd_private.h
+++ b/arch/arm/mach-msm/smd_private.h
@@ -324,7 +324,8 @@
#define SMD_KIND_PACKET 0x200
extern struct list_head smd_ch_closed_list;
-extern struct list_head smd_ch_list;
+extern struct list_head smd_ch_list_modem;
+extern struct list_head smd_ch_list_dsp;
extern spinlock_t smd_lock;
extern spinlock_t smem_lock;