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Enabled specific types of debug info.

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Added pointer to RDA to sonic structure.

Added macro names for values used in the in_use field of RDA entries.

Rewrote the RX Descriptor Area initialization loop.

Added a check to barf if this is a Rev B sonic chip.

Enabled check that the CAM was properly loaded.
This commit is contained in:
Joel Sherrill
1998-08-06 19:01:02 +00:00
parent e995f3a1ac
commit e70a8f16b5
1 changed files with 55 additions and 31 deletions
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86
c/src/lib/libbsp/powerpc/dmv177/sonic/sonic.c
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@@ -49,8 +49,9 @@
#define SONIC_DEBUG_ALL 0xFFFF #define SONIC_DEBUG_ALL 0xFFFF
#define SONIC_DEBUG_PRINT_REGISTERS 0x0001 #define SONIC_DEBUG_PRINT_REGISTERS 0x0001
#define SONIC_DEBUG_MEMORY 0x0002 #define SONIC_DEBUG_MEMORY 0x0002
#define SONIC_DEBUG_MEMORY_ALLOCATE 0x0004
#define SONIC_DEBUG SONIC_DEBUG_ALL #define SONIC_DEBUG (SONIC_DEBUG_PRINT_REGISTERS|SONIC_DEBUG_MEMORY)
/* /*
* XXX * XXX
@@ -185,12 +186,13 @@ struct sonic {
*/ */
int rdaCount; int rdaCount;
ReceiveResourcePointer_t rsa; ReceiveResourcePointer_t rsa;
ReceiveDescriptorPointer_t rda;
ReceiveDescriptorPointer_t rdp_last; ReceiveDescriptorPointer_t rdp_last;
/* /*
* Transmit descriptors * Transmit descriptors
*/ */
int tdaCount; int tdaCount;
TransmitDescriptorPointer_t tdaHead; /* Last filled */ TransmitDescriptorPointer_t tdaHead; /* Last filled */
TransmitDescriptorPointer_t tdaTail; /* Next to retire */ TransmitDescriptorPointer_t tdaTail; /* Next to retire */
int tdaActiveCount; int tdaActiveCount;
@@ -260,7 +262,7 @@ SONIC_STATIC void * sonic_allocate (unsigned int nbytes)
if ((a1 >> 16) == (a2 >> 16)) if ((a1 >> 16) == (a2 >> 16))
break; break;
} }
#if (SONIC_DEBUG & SONIC_DEBUG_MEMORY) #if (SONIC_DEBUG & SONIC_DEBUG_MEMORY_ALLOCATE)
printf( "sonic_allocate %d bytes at %p\n", nbytes, p ); printf( "sonic_allocate %d bytes at %p\n", nbytes, p );
#endif #endif
return p; return p;
@@ -684,7 +686,7 @@ SONIC_STATIC void sonic_rda_wait(
* One more check to soak up any Receive Descriptors * One more check to soak up any Receive Descriptors
* that may already have been handed back to the driver. * that may already have been handed back to the driver.
*/ */
if (rdp->in_use == 0) if (rdp->in_use == RDA_IN_USE)
break; break;
/* /*
@@ -739,7 +741,7 @@ SONIC_STATIC void sonic_rda_wait(
/* /*
* Has Receive Descriptor become available? * Has Receive Descriptor become available?
*/ */
if (rdp->in_use == 0) if (rdp->in_use == RDA_IN_USE)
break; break;
/* /*
@@ -778,7 +780,7 @@ SONIC_STATIC void sonic_rx (int dev, void *p1, void *p2)
rwp = dp->rsa; rwp = dp->rsa;
rea = rwp; rea = rwp;
rdp = dp->rdp_last; rdp = dp->rda; /* XXX was rdp_last */
/* /*
* Start the receiver * Start the receiver
@@ -795,11 +797,13 @@ SONIC_STATIC void sonic_rx (int dev, void *p1, void *p2)
/* /*
* Wait till SONIC supplies a Receive Descriptor. * Wait till SONIC supplies a Receive Descriptor.
*/ */
if (rdp->in_use) { if (rdp->in_use == RDA_FREE) {
continuousCount = 0; continuousCount = 0;
sonic_rda_wait (dp, rdp); sonic_rda_wait (dp, rdp);
} }
printf( "Incoming packet %p\n", rdp );
/* /*
* Check that packet is valid * Check that packet is valid
*/ */
@@ -895,7 +899,7 @@ SONIC_STATIC void sonic_rx (int dev, void *p1, void *p2)
* Move to next receive descriptor * Move to next receive descriptor
*/ */
rdp->link |= RDA_LINK_EOL; rdp->link |= RDA_LINK_EOL;
rdp->in_use = 1; rdp->in_use = RDA_FREE;
rdp = rdp->next; rdp = rdp->next;
rdp->link &= ~RDA_LINK_EOL; rdp->link &= ~RDA_LINK_EOL;
} }
@@ -919,7 +923,6 @@ SONIC_STATIC void sonic_initialize_hardware(
{ {
void *rp = dp->sonic; void *rp = dp->sonic;
int i; int i;
ReceiveDescriptor_t *rda;
unsigned char *hwaddr; unsigned char *hwaddr;
rtems_isr_entry old_handler; rtems_isr_entry old_handler;
TransmitDescriptorPointer_t otdp, tdp; TransmitDescriptorPointer_t otdp, tdp;
@@ -937,6 +940,18 @@ SONIC_STATIC void sonic_initialize_hardware(
}; };
volatile struct CamDescriptor *cdp; volatile struct CamDescriptor *cdp;
/*
* The Revision B SONIC has a horrible bug known as the "Zero
* Length Packet bug". The initial board used to develop this
* driver had a newer revision of the SONIC so there was no reason
* to check for this. If you have the Revision B SONIC chip, then
* you need to add some code to the RX path to handle this weirdness.
*/
if ( sonic_read_register( rp, SONIC_REG_SR ) < SONIC_REVISION_C ) {
rtems_fatal_error_occurred( 0x0BADF00D ); /* don't eat this part :) */
}
/* /*
* Set up circular linked list in Transmit Descriptor Area. * Set up circular linked list in Transmit Descriptor Area.
* Use the PINT bit in the transmit configuration field to * Use the PINT bit in the transmit configuration field to
@@ -970,30 +985,34 @@ SONIC_STATIC void sonic_initialize_hardware(
/* /*
* Set up circular linked list in Receive Descriptor Area. * Set up circular linked list in Receive Descriptor Area.
* Leaves ordp pointing at the `end' of the list and * Leaves ordp pointing at the `end' of the list and
* rdp pointing at the `beginning' of the list. * dp->rda pointing at the `beginning' of the list.
*/ */
rda = sonic_allocate (dp->rdaCount * sizeof *rda); dp->rda = sonic_allocate (dp->rdaCount * sizeof(ReceiveDescriptor_t));
#if (SONIC_DEBUG & SONIC_DEBUG_MEMORY) #if (SONIC_DEBUG & SONIC_DEBUG_MEMORY)
printf( "rda area = %p\n", rda ); printf( "rda area = %p\n", dp->rda );
#endif #endif
ordp = rdp = rda;
ordp = rdp = dp->rda;
for (i = 0 ; i < dp->rdaCount ; i++) { for (i = 0 ; i < dp->rdaCount ; i++) {
/* /*
* Set up RDA entry * status, byte_count, pkt_ptr0, pkt_ptr1, and seq_no are set
* to zero by sonic_allocate.
*/ */
if (i == (dp->rdaCount - 1)) rdp->link = LSW(rdp + 1);
rdp->next = rda; rdp->in_use = RDA_FREE;
else rdp->next = (ReceiveDescriptor_t *)(rdp + 1);
rdp->next = (ReceiveDescriptor_t *)(rdp + 1);
rdp->in_use = 0; /* XXX was 1 */
ordp = rdp; ordp = rdp;
rdp = rdp->next; rdp++;
ordp->link = LSW(rdp);
} }
/*
* Link the last desriptor to the 1st one and mark it as the end
* of the list.
*/
ordp->next = dp->rda;
ordp->link |= RDA_LINK_EOL; ordp->link |= RDA_LINK_EOL;
dp->rdp_last = rdp; dp->rdp_last = rdp;
/* /*
* Allocate the receive resource area. * Allocate the receive resource area.
* In accordance with National Application Note 746, make the * In accordance with National Application Note 746, make the
@@ -1091,8 +1110,8 @@ SONIC_STATIC void sonic_initialize_hardware(
sonic_write_register( rp, SONIC_REG_RWP, LSW(dp->rsa) ); /* XXX was rea */ sonic_write_register( rp, SONIC_REG_RWP, LSW(dp->rsa) ); /* XXX was rea */
sonic_write_register( rp, SONIC_REG_RSC, 0 ); sonic_write_register( rp, SONIC_REG_RSC, 0 );
sonic_write_register( rp, SONIC_REG_URDA, MSW(rdp) ); sonic_write_register( rp, SONIC_REG_URDA, MSW(dp->rda) );
sonic_write_register( rp, SONIC_REG_CRDA, LSW(rdp) ); sonic_write_register( rp, SONIC_REG_CRDA, LSW(dp->rda) );
sonic_write_register( rp, SONIC_REG_UTDA, MSW(dp->tdaTail) ); sonic_write_register( rp, SONIC_REG_UTDA, MSW(dp->tdaTail) );
sonic_write_register( rp, SONIC_REG_CTDA, LSW(dp->tdaTail) ); sonic_write_register( rp, SONIC_REG_CTDA, LSW(dp->tdaTail) );
@@ -1145,23 +1164,28 @@ SONIC_STATIC void sonic_initialize_hardware(
/* /*
* Verify that CAM was properly loaded. * Verify that CAM was properly loaded.
*/ */
#if 0
sonic_write_register( rp, SONIC_REG_CEP, 0 ); /* Select first entry in CAM */ sonic_write_register( rp, SONIC_REG_CR, CR_RST | CR_STP | CR_RXDIS | CR_HTX );
if ((sonic_read_register( rp, SONIC_REG_CAP2 ) != cdp->cap2)
|| (sonic_read_register( rp, SONIC_REG_CAP1 ) != cdp->cap1) sonic_write_register( rp, SONIC_REG_CEP, 0 ); /* Select first entry in CAM */
|| (sonic_read_register( rp, SONIC_REG_CAP0 ) != cdp->cap0) if ((sonic_read_register( rp, SONIC_REG_CAP2 ) != cdp->desc[0].cap2)
|| (sonic_read_register( rp, SONIC_REG_CAP1 ) != cdp->desc[0].cap1)
|| (sonic_read_register( rp, SONIC_REG_CAP0 ) != cdp->desc[0].cap0)
|| (sonic_read_register( rp, SONIC_REG_CE ) != cdp->ce)) { || (sonic_read_register( rp, SONIC_REG_CE ) != cdp->ce)) {
printf ("Failed to load Ethernet address into SONIC CAM.\n" printf ("Failed to load Ethernet address into SONIC CAM.\n"
" Wrote %04x%04x%04x - %#x\n" " Wrote %04x%04x%04x - %#x\n"
" Read %04x%04x%04x - %#x\n", " Read %04x%04x%04x - %#x\n",
cdp->cap2, cdp->cap1, cdp->cap0, cdp->ce, cdp->desc[0].cap2, cdp->desc[0].cap1, cdp->desc[0].cap0, cdp->ce,
sonic_read_register( rp, SONIC_REG_CAP2 ), sonic_read_register( rp, SONIC_REG_CAP2 ),
sonic_read_register( rp, SONIC_REG_CAP1 ), sonic_read_register( rp, SONIC_REG_CAP1 ),
sonic_read_register( rp, SONIC_REG_CAP0 ), sonic_read_register( rp, SONIC_REG_CAP0 ),
sonic_read_register( rp, SONIC_REG_CE )); sonic_read_register( rp, SONIC_REG_CE ));
#if 0
rtems_panic ("SONIC LCAM"); rtems_panic ("SONIC LCAM");
}
#endif #endif
}
sonic_write_register( rp, SONIC_REG_CR, CR_STP | CR_RXDIS | CR_HTX );
/* /*
* Attach SONIC interrupt handler * Attach SONIC interrupt handler