From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mercury.testsyseng.com (unknown [209.120.144.205]) (using TLSv1 with cipher EDH-RSA-DES-CBC3-SHA (168/168 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTP id 424DC679FD for ; Sat, 25 Feb 2006 09:49:32 +1100 (EST) Message-ID: <43FF8D76.7030807@digis.net> Date: Fri, 24 Feb 2006 15:49:26 -0700 From: bennett78 MIME-Version: 1.0 To: Frank Bennett Subject: Re: mpc5200 timer3 Interrupts stopped working References: <43FF2D69.3030902@digis.net> In-Reply-To: <43FF2D69.3030902@digis.net> Content-Type: multipart/alternative; boundary="------------090300050707000001080700" Cc: linuxppc-embedded@ozlabs.org Reply-To: Frank Bennett List-Id: Linux on Embedded PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , This is a multi-part message in MIME format. --------------090300050707000001080700 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit bennett78 wrote: > Help, how do I debug timer3 Interrupts? My driver was working and > then interrupts Never mind H/W problem...the J27 jumper on the 5200Lite was missing. I did get a change to review arch/ppc/kernel/mpc5xxx-pic.c & my interrupt masks settings! Sorry for the thread interrupt! Frank Bennett > stopped coming (most likely blocked). I have a driver that is very > similar to > linuxppc_2_4_devel/drivers/char/pp01_ad64.c > I have attached the complete driver (et.c) > > / # insmod et > ET Display Driver v0.1 loaded ET_TIN irq 16 > > et_init 00 intr->per_mask 1bfffc00 > et_init 10 intr->ctrl 00c01001 > et_init 14 intr->main_mask 00010e00 > et_init 24 intr->enc_stat 00000001 > et_init 28 intr->crit_stat 00000000 > et_init 2c intr->main_stat 00002000 > et_init 30 intr->per_stat 00000000 > et_init 38 intr->per_error 00000000 > > / # cat /proc/interrupts > CPU0 > 16: 0 MPC5xxx Edge et Trubine > 23: 1049 MPC5xxx Edge eth_xmit > 24: 2468 MPC5xxx Edge eth_recv > 39: 51 MPC5xxx Edge serial > 40: 0 MPC5xxx Edge serial > 43: 69 MPC5xxx Edge eth_err > BAD: 0 > > with a pulse train on timer3 input "et_interrupt" no longer gets > called. > > code snippets > -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= > #define ET_TIN 3 // Turbine PULSE IN > > static void et_interrupt (int irq, void *dev_id, struct pt_regs * regs) > { > int port = ET_IRQ_TO_PORT(irq); > unsigned long stat; > > printk(KERN_INFO "et_interrupt IRQ %d port %d main_stat %x gpt.sr > %x \n", > irq, port, intr->main_status, gpt[port].sr ); > > if( port == ET_TIN ) { > // Clear pending interrupt > stat = in_be32(&gpt[port].sr) & 0xffff; > out_be32(&gpt[port].sr, MPC5xxx_GPT_SR_CAPT); > printk(KERN_INFO "et_int irq=%d port=%d stat %0lx \n", irq, > port, stat); > // wake_up_interruptible(&et_wait); > } else { > printk(KERN_ERR ET_MSG "Unexpected IRQ %d received", irq); > } > spin_lock (&et_lock); > turbine_per = in_be32(&gpt[port].sr) >> 16; > spin_unlock (&et_lock); > } > > > static int __init et_init (void) > .... > if (request_irq(ET_PORT_TO_IRQ(ET_TIN), et_interrupt, 0, "et Trubine", > NULL)) { > printk(KERN_ERR ET_MSG "couldn't register interrupts\n"); > goto abort_remove_proc; > } > out_be32(&gpt[ET_TIN].cir, ( 66<<16) | 1 ); /* prescale(16), > period(16) */ > out_be32(&gpt[ET_TIN].emsr, > MPC5xxx_GPT_EMSR_INP_CAPTURE > | MPC5xxx_GPT_EMSR_ICT_FALLING > | MPC5xxx_GPT_EMSR_INT_ENABLE); > ... > printk(KERN_INFO "ET Display Driver v%s loaded ET_TIN irq %d\n", > ET_VERSION, ET_PORT_TO_IRQ(ET_TIN) ); > > //broke with or without the following > intr->main_mask &= ~(0x000000ff); /* enable timer ints */ > > printk(KERN_INFO "et_init 00 intr->per_mask %08x\n", intr->per_mask); > printk(KERN_INFO "et_init 10 intr->ctrl %08x\n", intr->ctrl); > printk(KERN_INFO "et_init 14 intr->main_mask %08x\n", > intr->main_mask); > printk(KERN_INFO "et_init 24 intr->enc_stat %08x\n", > intr->enc_status); > printk(KERN_INFO "et_init 28 intr->crit_stat %08x\n", > intr->crit_status); > printk(KERN_INFO "et_init 2c intr->main_stat %08x\n", > intr->main_status); > printk(KERN_INFO "et_init 30 intr->per_stat %08x\n", > intr->per_status); > printk(KERN_INFO "et_init 38 intr->per_error %08x\n", > intr->per_error); > > -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= > thanks in advance for any help, > > Frank Bennett > --------------090300050707000001080700 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit bennett78 wrote:
Help, how do I debug timer3 Interrupts?  My driver was working and then interrupts
Never mind H/W problem...the J27 jumper on the 5200Lite was missing.  I did get a change to
review arch/ppc/kernel/mpc5xxx-pic.c & my interrupt masks settings!

Sorry for the thread interrupt!

Frank Bennett
stopped coming (most likely blocked).  I have a driver that is very similar to
     linuxppc_2_4_devel/drivers/char/pp01_ad64.c
I have attached the complete driver (et.c)

/ # insmod et
ET Display Driver v0.1 loaded ET_TIN irq 16

et_init 00 intr->per_mask  1bfffc00
et_init 10 intr->ctrl      00c01001
et_init 14 intr->main_mask 00010e00
et_init 24 intr->enc_stat  00000001
et_init 28 intr->crit_stat 00000000
et_init 2c intr->main_stat 00002000
et_init 30 intr->per_stat  00000000
et_init 38 intr->per_error 00000000

/ # cat /proc/interrupts
           CPU0
 16:          0  MPC5xxx Edge      et Trubine
 23:       1049  MPC5xxx Edge      eth_xmit
 24:       2468  MPC5xxx Edge      eth_recv
 39:         51  MPC5xxx Edge      serial
 40:          0  MPC5xxx Edge      serial
 43:         69  MPC5xxx Edge      eth_err
BAD:          0

with a pulse train on timer3 input "et_interrupt" no longer gets
called.

code snippets
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
#define ET_TIN         3   // Turbine PULSE IN

static void et_interrupt (int irq, void *dev_id, struct pt_regs * regs)
{
    int port = ET_IRQ_TO_PORT(irq);
    unsigned long stat;

    printk(KERN_INFO "et_interrupt IRQ %d port %d main_stat %x gpt.sr %x \n",
                        irq, port, intr->main_status, gpt[port].sr );

    if( port == ET_TIN ) {
        // Clear pending interrupt
        stat = in_be32(&gpt[port].sr) & 0xffff;
        out_be32(&gpt[port].sr,  MPC5xxx_GPT_SR_CAPT);
        printk(KERN_INFO "et_int irq=%d port=%d stat %0lx \n", irq, port, stat);
        // wake_up_interruptible(&et_wait);
    } else {
        printk(KERN_ERR ET_MSG "Unexpected IRQ %d received", irq);
    }
    spin_lock (&et_lock);
    turbine_per = in_be32(&gpt[port].sr) >> 16;
    spin_unlock (&et_lock);
}


static int __init et_init (void)
....
if (request_irq(ET_PORT_TO_IRQ(ET_TIN), et_interrupt, 0, "et Trubine", NULL)) {
            printk(KERN_ERR ET_MSG "couldn't register interrupts\n");
            goto abort_remove_proc;
    }
out_be32(&gpt[ET_TIN].cir, (   66<<16) | 1 );  /* prescale(16), period(16)  */
out_be32(&gpt[ET_TIN].emsr,
        MPC5xxx_GPT_EMSR_INP_CAPTURE
      | MPC5xxx_GPT_EMSR_ICT_FALLING
      | MPC5xxx_GPT_EMSR_INT_ENABLE);
...
printk(KERN_INFO "ET Display Driver v%s loaded ET_TIN irq %d\n",
        ET_VERSION, ET_PORT_TO_IRQ(ET_TIN) );

    //broke with or without the following
    intr->main_mask &= ~(0x000000ff);   /* enable timer ints */

    printk(KERN_INFO "et_init 00 intr->per_mask  %08x\n", intr->per_mask);
    printk(KERN_INFO "et_init 10 intr->ctrl      %08x\n", intr->ctrl);
    printk(KERN_INFO "et_init 14 intr->main_mask %08x\n", intr->main_mask);
    printk(KERN_INFO "et_init 24 intr->enc_stat  %08x\n", intr->enc_status);
    printk(KERN_INFO "et_init 28 intr->crit_stat %08x\n", intr->crit_status);
    printk(KERN_INFO "et_init 2c intr->main_stat %08x\n", intr->main_status);
    printk(KERN_INFO "et_init 30 intr->per_stat  %08x\n", intr->per_status);
    printk(KERN_INFO "et_init 38 intr->per_error %08x\n", intr->per_error);

-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
thanks in advance for any help,

Frank Bennett

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