* [ECOS] DAI driver and I2S interrupt on edb7xxx
@ 2001-07-18 6:55 Franck MAMALET FT-R&D DIH/OCF
2001-07-18 7:58 ` Gary Thomas
2001-07-18 8:32 ` Jonathan Larmour
0 siblings, 2 replies; 7+ messages in thread
From: Franck MAMALET FT-R&D DIH/OCF @ 2001-07-18 6:55 UTC (permalink / raw)
To: ecos-discuss
[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
[-- Attachment #1: Type: text/plain, Size: 2312 bytes --]
Hi,
I'm trying to install a driver for DAIÂ codec on the edb7xxx.
I had a look to hal/arm/edb7xxx/current/misc/i2s_audio... to
devellop a i2s_ISRÂ and i2s_DSR and then create and attach themÂ
to CYGNUM_HAL_INTERRUPT_I2SINT.
Looking at eCos interrupt handling I found something weird: in
hal_IRQ_handler(hal/arm/edb7xxx/current/src/edb7xxx_misc.c), eCos scans
all interrupts to find the vector number of the first interrupt to handle:
   while (map->first_int) {
       stat = *(volatile cyg_uint32
*)map->stat_reg & *(volatile cyg_uint32 *)map->mask_reg;
       for (vector = map->first_int;Â
vector <= map->last_int;Â vector++) {
          Â
if (stat & hal_interrupt_bitmap[vector]) return vector;
       }
       map++; // Next interrupt
status register
   }
But I2S interrupt vector number is 22 and is the last one,
so it will be handled after all pending interrupts (even some IRQs)
I think it is not a good idea for a FIQ, and actually it doesn't work.Â
I had to change hal_interrupt_status_regmap table to fix it:
"./arm/edb7xxx/current/src/edb7xxx_misc.c"Â line 284
static struct regmap {
   int       first_int,
last_int;
   cyg_uint32 stat_reg, mask_reg;
} hal_interrupt_status_regmap[] = {
   { CYGNUM_HAL_INTERRUPT_EXTFIQ, CYGNUM_HAL_INTERRUPT_MCINT,Â
INTSR1, INTMR1},
#if defined(__EDB7211)
   { CYGNUM_HAL_INTERRUPT_MCPINT, CYGNUM_HAL_INTERRUPT_MCPINT,Â
INTSR3, INTMR3},
#endif
#if defined(__EDB7209)
   { CYGNUM_HAL_INTERRUPT_I2SINT, CYGNUM_HAL_INTERRUPT_I2SINT,Â
INTSR3, INTMR3},
#endif
  { CYGNUM_HAL_INTERRUPT_CSINT, CYGNUM_HAL_INTERRUPT_SSEOTI,Â
INTSR1, INTMR1},
   { CYGNUM_HAL_INTERRUPT_KBDINT, CYGNUM_HAL_INTERRUPT_URXINT2,
INTSR2, INTMR2},
   { 0, 0, 0}
};
Could you please tell me if my modification is OK (I mean safe)
? and if the same kind of selection is applied for DSRÂ handling? and
where?
Thanks,
Best regards,
Franck.
Â
Â
--Â
& france telecomÂ
Mamalet Franck
FTR&D DIH/OCF
Tél : 04 76 76 45 71  Fax : 04 76 90 34 43
franck.mamalet@rd.francetelecom.com
Â
^ permalink raw reply [flat|nested] 7+ messages in thread
* RE: [ECOS] DAI driver and I2S interrupt on edb7xxx
2001-07-18 6:55 [ECOS] DAI driver and I2S interrupt on edb7xxx Franck MAMALET FT-R&D DIH/OCF
@ 2001-07-18 7:58 ` Gary Thomas
2001-07-18 8:10 ` Trenton D. Adams
2001-07-18 8:32 ` Jonathan Larmour
1 sibling, 1 reply; 7+ messages in thread
From: Gary Thomas @ 2001-07-18 7:58 UTC (permalink / raw)
To: Franck MAMALET FT-R&D DIH/OCF; +Cc: ecos-discuss
On 18-Jul-2001 Franck MAMALET FT-R&D DIH/OCF wrote:
Please, no encoded mime data :-(
If you'll resend your query in PLAIN TEXT, maybe someome will be
able to help you with it.
^ permalink raw reply [flat|nested] 7+ messages in thread
* RE: [ECOS] DAI driver and I2S interrupt on edb7xxx
2001-07-18 7:58 ` Gary Thomas
@ 2001-07-18 8:10 ` Trenton D. Adams
2001-07-18 9:48 ` Jonathan Larmour
0 siblings, 1 reply; 7+ messages in thread
From: Trenton D. Adams @ 2001-07-18 8:10 UTC (permalink / raw)
To: 'Gary Thomas', 'Franck MAMALET FT-R&D DIH/OCF'
Cc: ecos-discuss
How did he even do that? My messages get rejected from the list if I do
that.
> -----Original Message-----
> From: ecos-discuss-owner@sources.redhat.com [ mailto:ecos-discuss-
> owner@sources.redhat.com] On Behalf Of Gary Thomas
> Sent: Wednesday, July 18, 2001 8:52 AM
> To: Franck MAMALET FT-R&D DIH/OCF
> Cc: ecos-discuss@sourceware.cygnus.com
> Subject: RE: [ECOS] DAI driver and I2S interrupt on edb7xxx
>
>
> On 18-Jul-2001 Franck MAMALET FT-R&D DIH/OCF wrote:
>
> Please, no encoded mime data :-(
>
> If you'll resend your query in PLAIN TEXT, maybe someome will be
> able to help you with it.
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [ECOS] DAI driver and I2S interrupt on edb7xxx
2001-07-18 6:55 [ECOS] DAI driver and I2S interrupt on edb7xxx Franck MAMALET FT-R&D DIH/OCF
2001-07-18 7:58 ` Gary Thomas
@ 2001-07-18 8:32 ` Jonathan Larmour
1 sibling, 0 replies; 7+ messages in thread
From: Jonathan Larmour @ 2001-07-18 8:32 UTC (permalink / raw)
To: Franck MAMALET FT-R&D DIH/OCF; +Cc: ecos-discuss
Franck MAMALET FT-R&D DIH/OCF wrote:
> I think it is not a good idea for a FIQ, and actually it doesn't work. I
> had to change hal_interrupt_status_regmap table to fix it:
>
> "./arm/edb7xxx/current/src/edb7xxx_misc.c" line 284
> static struct regmap {
> int first_int, last_int;
> cyg_uint32 stat_reg, mask_reg;
> } hal_interrupt_status_regmap[] = {
> { CYGNUM_HAL_INTERRUPT_EXTFIQ, CYGNUM_HAL_INTERRUPT_MCINT, INTSR1,
> INTMR1},
> #if defined(__EDB7211)
> { CYGNUM_HAL_INTERRUPT_MCPINT, CYGNUM_HAL_INTERRUPT_MCPINT, INTSR3,
> INTMR3},
> #endif
> #if defined(__EDB7209)
> { CYGNUM_HAL_INTERRUPT_I2SINT, CYGNUM_HAL_INTERRUPT_I2SINT, INTSR3,
> INTMR3},
> #endif
> { CYGNUM_HAL_INTERRUPT_CSINT, CYGNUM_HAL_INTERRUPT_SSEOTI, INTSR1,
> INTMR1},
> { CYGNUM_HAL_INTERRUPT_KBDINT, CYGNUM_HAL_INTERRUPT_URXINT2, INTSR2,
> INTMR2},
> { 0, 0, 0}
> };
Looks fine to me. I'll make that change here too.
> Could you please tell me if my modification is OK (I mean safe) ? and if
> the same kind of selection is applied for DSR handling? and where?
DSRs are not prioritized in that way. The system can't continue till all
DSRs are run anyway.
Jifl
--
Red Hat, Rustat House, Clifton Road, Cambridge, UK. Tel: +44 (1223) 271062
Maybe this world is another planet's Hell -Aldous Huxley || Opinions==mine
Come to the Red Hat TechWorld open source conference in Brussels!
Keynotes, techie talks and exhibitions http://www.redhat-techworld.com/
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [ECOS] DAI driver and I2S interrupt on edb7xxx
2001-07-18 8:10 ` Trenton D. Adams
@ 2001-07-18 9:48 ` Jonathan Larmour
2001-07-18 9:50 ` Trenton D. Adams
0 siblings, 1 reply; 7+ messages in thread
From: Jonathan Larmour @ 2001-07-18 9:48 UTC (permalink / raw)
To: Trenton D. Adams; +Cc: ecos-discuss
"Trenton D. Adams" wrote:
>
> How did he even do that? My messages get rejected from the list if I do
> that.
I think it only bounces HTML if there isn't a text/plain alternative.
Jifl
--
Red Hat, Rustat House, Clifton Road, Cambridge, UK. Tel: +44 (1223) 271062
Maybe this world is another planet's Hell -Aldous Huxley || Opinions==mine
Come to the Red Hat TechWorld open source conference in Brussels!
Keynotes, techie talks and exhibitions http://www.redhat-techworld.com/
^ permalink raw reply [flat|nested] 7+ messages in thread
* RE: [ECOS] DAI driver and I2S interrupt on edb7xxx
2001-07-18 9:48 ` Jonathan Larmour
@ 2001-07-18 9:50 ` Trenton D. Adams
0 siblings, 0 replies; 7+ messages in thread
From: Trenton D. Adams @ 2001-07-18 9:50 UTC (permalink / raw)
To: 'Jonathan Larmour'; +Cc: 'eCos mailing list'
> >
> > How did he even do that? My messages get rejected from the list
if I
> do
> > that.
>
> I think it only bounces HTML if there isn't a text/plain
alternative.
>
Ya, probably. I was sending HTML so that's probably what it is.
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [ECOS] DAI driver and I2S interrupt on edb7xxx
@ 2001-07-18 8:33 Franck MAMALET FT-R&D DIH/OCF
0 siblings, 0 replies; 7+ messages in thread
From: Franck MAMALET FT-R&D DIH/OCF @ 2001-07-18 8:33 UTC (permalink / raw)
To: ecos-discuss; +Cc: Franck MAMALET FT-R&D DIH/OCF
[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
[-- Attachment #1: Type: text/plain, Size: 2268 bytes --]
Gary Thomas wrote:
> On 18-Jul-2001 Franck MAMALET FT-R&D DIH/OCF wrote:
>
> Please, no encoded mime data :-(
>
> If you'll resend your query in PLAIN TEXT, maybe someome will be
> able to help you with it.
Sorry for this, Hope this will be better.
Franck.
Hi,
I'm trying to install a driver for DAI codec on the edb7xxx.
I had a look to hal/arm/edb7xxx/current/misc/i2s_audio... to devellop a
i2s_ISR and i2s_DSR and then create and attach them to
CYGNUM_HAL_INTERRUPT_I2SINT.
Looking at eCos interrupt handling I found something weird: in
hal_IRQ_handler(hal/arm/edb7xxx/current/src/edb7xxx_misc.c), eCos scans
all interrupts to find the vector number of the first interrupt to
handle:
while (map->first_int) {
stat = *(volatile cyg_uint32 *)map->stat_reg & *(volatile
cyg_uint32 *)map->mask_reg;
for (vector = map->first_int; vector <= map->last_int;
vector++) {
if (stat & hal_interrupt_bitmap[vector]) return vector;
}
map++; // Next interrupt status register
}
But I2S interrupt vector number is 22 and is the last one, so it will
be handled after all pending interrupts (even some IRQs)
I think it is not a good idea for a FIQ, and actually it doesn't work.
I had to change hal_interrupt_status_regmap table to fix it:
"./arm/edb7xxx/current/src/edb7xxx_misc.c" line 284
static struct regmap {
int first_int, last_int;
cyg_uint32 stat_reg, mask_reg;
} hal_interrupt_status_regmap[] = {
{ CYGNUM_HAL_INTERRUPT_EXTFIQ, CYGNUM_HAL_INTERRUPT_MCINT,
INTSR1,INTMR1},
#if defined(__EDB7211)
{ CYGNUM_HAL_INTERRUPT_MCPINT, CYGNUM_HAL_INTERRUPT_MCPINT,
INTSR3,INTMR3},
#endif
#if defined(__EDB7209)
{ CYGNUM_HAL_INTERRUPT_I2SINT, CYGNUM_HAL_INTERRUPT_I2SINT,
INTSR3,INTMR3},
#endif
{ CYGNUM_HAL_INTERRUPT_CSINT, CYGNUM_HAL_INTERRUPT_SSEOTI,
INTSR1,INTMR1},
{ CYGNUM_HAL_INTERRUPT_KBDINT, CYGNUM_HAL_INTERRUPT_URXINT2,
INTSR2,INTMR2},
{ 0, 0, 0}
};
Could you please tell me if my modification is OK (I mean safe) ? and
if the same kind of selection is applied for DSR handling? and where?
Thanks,
Best regards,
Franck.
--
& france telecom
Mamalet Franck
FTR&D DIH/OCF
Tél : 04 76 76 45 71 Fax : 04 76 90 34 43
franck.mamalet@rd.francetelecom.com
^ permalink raw reply [flat|nested] 7+ messages in thread
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2001-07-18 6:55 [ECOS] DAI driver and I2S interrupt on edb7xxx Franck MAMALET FT-R&D DIH/OCF
2001-07-18 7:58 ` Gary Thomas
2001-07-18 8:10 ` Trenton D. Adams
2001-07-18 9:48 ` Jonathan Larmour
2001-07-18 9:50 ` Trenton D. Adams
2001-07-18 8:32 ` Jonathan Larmour
2001-07-18 8:33 Franck MAMALET FT-R&D DIH/OCF
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