static inline int fcc_cr_cmd(struct fs_enet_private *fep, u32 mcn, u32 op)
{
const struct fs_platform_info *fpi = fep->fpi;
cpm2_map_t *immap = fs_enet_immap;
cpm_cpm2_t *cpmp = &immap->im_cpm;
u32 v;
int i;
/* Currently I don't know what feature call will look like. But
I guess there'd be something like do_cpm_cmd() which will require page & sblock */
v = mk_cr_cmd(fpi->cp_page, fpi->cp_block, mcn, op);
W32(cpmp, cp_cpcr, v | CPM_CR_FLG);
for (i = 0; i < MAX_CR_CMD_LOOPS; i++)
if ((R32(cpmp, cp_cpcr) & CPM_CR_FLG) == 0)
break;
if (i >= MAX_CR_CMD_LOOPS) {
printk(KERN_ERR "%s(): Not able to issue CPM command\n",
__FUNCTION__);
return 1;
}
return 0;
}
void cpm_line_cr_cmd(struct uart_cpm_port *port, int cmd)
{
ushort val;
int line = port - cpm_uart_ports;
volatile cpm8xx_t *cp = cpmp;
switch (line) {
case UART_SMC1:
val = mk_cr_cmd(CPM_CR_CH_SMC1, cmd) | CPM_CR_FLG;
break;
case UART_SMC2:
val = mk_cr_cmd(CPM_CR_CH_SMC2, cmd) | CPM_CR_FLG;
break;
case UART_SCC1:
val = mk_cr_cmd(CPM_CR_CH_SCC1, cmd) | CPM_CR_FLG;
break;
case UART_SCC2:
val = mk_cr_cmd(CPM_CR_CH_SCC2, cmd) | CPM_CR_FLG;
break;
case UART_SCC3:
val = mk_cr_cmd(CPM_CR_CH_SCC3, cmd) | CPM_CR_FLG;
break;
case UART_SCC4:
val = mk_cr_cmd(CPM_CR_CH_SCC4, cmd) | CPM_CR_FLG;
break;
default:
return;
}
cp->cp_cpcr = val;
while (cp->cp_cpcr & CPM_CR_FLG) ;
}
void cpm_line_cr_cmd(int line, int cmd)
{
ushort val;
volatile cpm8xx_t *cp = (cpm8xx_t *)immr_map(im_cpm);
switch (line) {
case UART_SMC1:
val = mk_cr_cmd(CPM_CR_CH_SMC1, cmd) | CPM_CR_FLG;
break;
case UART_SMC2:
val = mk_cr_cmd(CPM_CR_CH_SMC2, cmd) | CPM_CR_FLG;
break;
case UART_SCC1:
val = mk_cr_cmd(CPM_CR_CH_SCC1, cmd) | CPM_CR_FLG;
break;
case UART_SCC2:
val = mk_cr_cmd(CPM_CR_CH_SCC2, cmd) | CPM_CR_FLG;
break;
case UART_SCC3:
val = mk_cr_cmd(CPM_CR_CH_SCC3, cmd) | CPM_CR_FLG;
break;
case UART_SCC4:
val = mk_cr_cmd(CPM_CR_CH_SCC4, cmd) | CPM_CR_FLG;
break;
default:
return;
}
cp->cp_cpcr = val;
while (cp->cp_cpcr & CPM_CR_FLG) ;
}
static void end_break(ser_info_t *info)
{
volatile QUICC *cp;
ushort chan;
int idx;
cp = pquicc;
idx = PORT_NUM(info->state->smc_scc_num);
if (info->state->smc_scc_num & NUM_IS_SCC)
chan = scc_chan_map[idx];
else
chan = smc_chan_map[idx];
cp->cp_cr = mk_cr_cmd(chan, CPM_CR_RESTART_TX) | CPM_CR_FLG;
while (cp->cp_cr & CPM_CR_FLG);
}
static void __exit cpm_load_cleanup (void)
{
int i;
volatile immap_t *immap = (immap_t *) IMAP_ADDR;
volatile cpm8xx_t *cp = &immap->im_cpm;
volatile risc_timer_t *rtram =
(risc_timer_t *) & cp->cp_dparam[PROFF_RTIMER];
remove_proc_entry (PROC_NAME, NULL);
/* Stop the general purpose timers.
*/
immap->im_cpmtimer.cpmt_tgcr |=
CPMTIMER_TGCR_STP1 | CPMTIMER_TGCR_STP2;
/* Stop the RISC timers.
*/
#ifdef RCCR_BUG
*(uint *) & (immap->im_cpm.cp_rccr) &= ~0x80000000;
#else
immap->im_cpm.cp_rccr &= ~0x8000;
#endif
/* Disable RISC timers.
*/
for (i = 0; i < RISC_TIMER_MAX; i++) {
rtram->tm_cmd = (i << 16);
/* Wait for a previous command to clear.
*/
while (cp->cp_cpcr & CPM_CR_FLG);
/* Issue SET TIMER command.
*/
cp->cp_cpcr = mk_cr_cmd (CPM_CR_CH_TIMER, CPM_CR_SET_TIMER) |
CPM_CR_FLG;
#if 0
while (cp->cp_cpcr & CPM_CR_FLG);
#endif
}
m8xx_cpm_dpfree (risc_dpram_timers);
}
/* Use the IDMA controller to transfer data from I/O memory to local RAM.
* The dst address must be a physical address suitable for use by the DMA
* controller with no translation. The src address must be a kernel virtual
* address. The src address is translated to a physical address via
* virt_to_phys().
* The dinc argument specifies whether or not the dest address is incremented
* by the DMA controller. The source address is incremented if and only if sinc
* is non-zero. The source address is always incremented since the
* source is always host RAM.
*/
static void
idma_pci9_write(u8 *dst, u8 *src, int bytes, int unit_size, int dinc)
{
unsigned long flags;
volatile idma_t *pram = &idma_dpram->pram;
volatile idma_bd_t *bd = &idma_dpram->bd;
volatile cpm2_map_t *immap = cpm2_immr;
local_irq_save(flags);
/* initialize IDMA parameter RAM for this transfer */
if (dinc)
pram->dcm = IDMA_DCM_DMA_WRAP_64 | IDMA_DCM_SINC
| IDMA_DCM_DINC | IDMA_DCM_SD_MEM2MEM;
else
pram->dcm = IDMA_DCM_DMA_WRAP_64 | IDMA_DCM_SINC
| IDMA_DCM_SD_MEM2MEM;
pram->ibdptr = pram->ibase;
pram->sts = unit_size;
pram->istate = 0;
/* initialize the buffer descriptor */
bd->dst = (uint) dst;
bd->src = virt_to_phys(src);
bd->len = bytes;
bd->flags = IDMA_BD_V | IDMA_BD_W | IDMA_BD_I | IDMA_BD_L | IDMA_BD_DGBL
| IDMA_BD_DBO_BE | IDMA_BD_SBO_BE | IDMA_BD_SDTB;
/* issue the START_IDMA command to the CP */
while (immap->im_cpm.cp_cpcr & CPM_CR_FLG);
immap->im_cpm.cp_cpcr = mk_cr_cmd(IDMA_PAGE, IDMA_SBLOCK, 0,
CPM_CR_START_IDMA) | CPM_CR_FLG;
while (immap->im_cpm.cp_cpcr & CPM_CR_FLG);
/* wait for transfer to complete */
while(bd->flags & IDMA_BD_V);
local_irq_restore(flags);
return;
}
void cpm_line_cr_cmd(struct uart_cpm_port *port, int cmd)
{
ulong val;
int line = port - cpm_uart_ports;
volatile cpm_cpm2_t *cp = cpm2_map(im_cpm);
switch (line) {
case UART_SMC1:
val = mk_cr_cmd(CPM_CR_SMC1_PAGE, CPM_CR_SMC1_SBLOCK, 0,
cmd) | CPM_CR_FLG;
break;
case UART_SMC2:
val = mk_cr_cmd(CPM_CR_SMC2_PAGE, CPM_CR_SMC2_SBLOCK, 0,
cmd) | CPM_CR_FLG;
break;
case UART_SCC1:
val = mk_cr_cmd(CPM_CR_SCC1_PAGE, CPM_CR_SCC1_SBLOCK, 0,
cmd) | CPM_CR_FLG;
break;
case UART_SCC2:
val = mk_cr_cmd(CPM_CR_SCC2_PAGE, CPM_CR_SCC2_SBLOCK, 0,
cmd) | CPM_CR_FLG;
break;
case UART_SCC3:
val = mk_cr_cmd(CPM_CR_SCC3_PAGE, CPM_CR_SCC3_SBLOCK, 0,
cmd) | CPM_CR_FLG;
break;
case UART_SCC4:
val = mk_cr_cmd(CPM_CR_SCC4_PAGE, CPM_CR_SCC4_SBLOCK, 0,
cmd) | CPM_CR_FLG;
break;
default:
return;
}
cp->cp_cpcr = val;
while (cp->cp_cpcr & CPM_CR_FLG) ;
cpm2_unmap(cp);
}
void cpm_line_cr_cmd(int line, int cmd)
{
volatile cpm_cpm2_t *cp = cpmp;
ulong val;
switch (line) {
case UART_SMC1:
val = mk_cr_cmd(CPM_CR_SMC1_PAGE, CPM_CR_SMC1_SBLOCK, 0,
cmd) | CPM_CR_FLG;
break;
case UART_SMC2:
val = mk_cr_cmd(CPM_CR_SMC2_PAGE, CPM_CR_SMC2_SBLOCK, 0,
cmd) | CPM_CR_FLG;
break;
case UART_SCC1:
val = mk_cr_cmd(CPM_CR_SCC1_PAGE, CPM_CR_SCC1_SBLOCK, 0,
cmd) | CPM_CR_FLG;
break;
case UART_SCC2:
val = mk_cr_cmd(CPM_CR_SCC2_PAGE, CPM_CR_SCC2_SBLOCK, 0,
cmd) | CPM_CR_FLG;
break;
case UART_SCC3:
val = mk_cr_cmd(CPM_CR_SCC3_PAGE, CPM_CR_SCC3_SBLOCK, 0,
cmd) | CPM_CR_FLG;
break;
case UART_SCC4:
val = mk_cr_cmd(CPM_CR_SCC4_PAGE, CPM_CR_SCC4_SBLOCK, 0,
cmd) | CPM_CR_FLG;
break;
default:
return;
}
cp->cp_cpcr = val;
while (cp->cp_cpcr & CPM_CR_FLG) ;
}
/* The interrupt handler.
* This is called from the CPM handler, not the MPC core interrupt.
*/
static void
cpm_enet_interrupt(void *dev_id)
{
struct device *dev = dev_id;
volatile struct cpm_enet_private *cep;
volatile cbd_t *bdp;
ushort int_events;
int must_restart;
cep = (struct cpm_enet_private *)dev->priv;
if (dev->interrupt)
printk("%s: Re-entering the interrupt handler.\n", dev->name);
dev->interrupt = 1;
/* Get the interrupt events that caused us to be here.
*/
int_events = cep->sccp->scc_scce;
cep->sccp->scc_scce = int_events;
must_restart = 0;
/* Handle receive event in its own function.
*/
if (int_events & SCCE_ENET_RXF)
cpm_enet_rx(dev_id);
/* Check for a transmit error. The manual is a little unclear
* about this, so the debug code until I get it figured out. It
* appears that if TXE is set, then TXB is not set. However,
* if carrier sense is lost during frame transmission, the TXE
* bit is set, "and continues the buffer transmission normally."
* I don't know if "normally" implies TXB is set when the buffer
* descriptor is closed.....trial and error :-).
*/
#if 0
if (int_events & SCCE_ENET_TXE) {
/* Transmission errors.
*/
bdp = cep->dirty_tx;
#ifndef final_version
printk("CPM ENET xmit error %x\n", bdp->cbd_sc);
if (bdp->cbd_sc & BD_ENET_TX_READY)
printk("HEY! Enet xmit interrupt and TX_READY.\n");
#endif
if (bdp->cbd_sc & BD_ENET_TX_HB) /* No heartbeat */
cep->stats.tx_heartbeat_errors++;
if (bdp->cbd_sc & BD_ENET_TX_LC) /* Late collision */
cep->stats.tx_window_errors++;
if (bdp->cbd_sc & BD_ENET_TX_RL) /* Retrans limit */
cep->stats.tx_aborted_errors++;
if (bdp->cbd_sc & BD_ENET_TX_UN) /* Underrun */
cep->stats.tx_fifo_errors++;
if (bdp->cbd_sc & BD_ENET_TX_CSL) /* Carrier lost */
cep->stats.tx_carrier_errors++;
cep->stats.tx_errors++;
/* No heartbeat or Lost carrier are not really bad errors.
* The others require a restart transmit command.
*/
if (bdp->cbd_sc &
(BD_ENET_TX_LC | BD_ENET_TX_RL | BD_ENET_TX_UN))
must_restart = 1;
}
#endif
/* Transmit OK, or non-fatal error. Update the buffer descriptors.
*/
if (int_events & (SCCE_ENET_TXE | SCCE_ENET_TXB)) {
#if 1
bdp = cep->dirty_tx;
while ((bdp->cbd_sc&BD_ENET_TX_READY)==0) {
if ((bdp==cep->cur_tx) && (cep->tx_full == 0))
break;
if (bdp->cbd_sc & BD_ENET_TX_HB) /* No heartbeat */
cep->stats.tx_heartbeat_errors++;
if (bdp->cbd_sc & BD_ENET_TX_LC) /* Late collision */
cep->stats.tx_window_errors++;
if (bdp->cbd_sc & BD_ENET_TX_RL) /* Retrans limit */
cep->stats.tx_aborted_errors++;
if (bdp->cbd_sc & BD_ENET_TX_UN) /* Underrun */
cep->stats.tx_fifo_errors++;
if (bdp->cbd_sc & BD_ENET_TX_CSL) /* Carrier lost */
cep->stats.tx_carrier_errors++;
/* No heartbeat or Lost carrier are not really bad errors.
* The others require a restart transmit command.
*/
if (bdp->cbd_sc &
(BD_ENET_TX_LC | BD_ENET_TX_RL | BD_ENET_TX_UN)) {
must_restart = 1;
cep->stats.tx_errors++;
}
cep->stats.tx_packets++;
#else
bdp = cep->dirty_tx;
#if 1
if (bdp->cbd_sc & BD_ENET_TX_READY)
printk("HEY! Enet xmit interrupt and TX_READY.\n");
#endif
#endif
/* Deferred means some collisions occurred during transmit,
* but we eventually sent the packet OK.
*/
if (bdp->cbd_sc & BD_ENET_TX_DEF)
cep->stats.collisions++;
/* Free the sk buffer associated with this last transmit.
*/
dev_kfree_skb(cep->tx_skbuff[cep->skb_dirty]/*, FREE_WRITE*/);
cep->skb_dirty = (cep->skb_dirty + 1) & TX_RING_MOD_MASK;
/* Update pointer to next buffer descriptor to be transmitted.
*/
if (bdp->cbd_sc & BD_ENET_TX_WRAP)
bdp = cep->tx_bd_base;
else
bdp++;
/* I don't know if we can be held off from processing these
* interrupts for more than one frame time. I really hope
* not. In such a case, we would now want to check the
* currently available BD (cur_tx) and determine if any
* buffers between the dirty_tx and cur_tx have also been
* sent. We would want to process anything in between that
* does not have BD_ENET_TX_READY set.
*/
/* Since we have freed up a buffer, the ring is no longer
* full.
*/
if (cep->tx_full && dev->tbusy) {
cep->tx_full = 0;
dev->tbusy = 0;
mark_bh(NET_BH);
}
cep->dirty_tx = (cbd_t *)bdp;
}
if (must_restart) {
volatile cpm8xx_t *cp;
/* Some transmit errors cause the transmitter to shut
* down. We now issue a restart transmit. Since the
* errors close the BD and update the pointers, the restart
* _should_ pick up without having to reset any of our
* pointers either.
*/
cp = cpmp;
cp->cp_cpcr =
mk_cr_cmd(CPM_CR_ENET, CPM_CR_RESTART_TX) | CPM_CR_FLG;
while (cp->cp_cpcr & CPM_CR_FLG);
}
}
/* Check for receive busy, i.e. packets coming but no place to
* put them. This "can't happen" because the receive interrupt
* is tossing previous frames.
*/
if (int_events & SCCE_ENET_BSY) {
cep->stats.rx_dropped++;
printk("CPM ENET: BSY can't happen.\n");
}
dev->interrupt = 0;
return;
}
int __init m8xx_enet_init(void)
{
struct device *dev;
struct cpm_enet_private *cep;
int i, j;
unsigned char *eap;
unsigned long mem_addr;
pte_t *pte;
bd_t *bd;
volatile cbd_t *bdp;
volatile cpm8xx_t *cp;
volatile scc_t *sccp;
volatile scc_enet_t *ep;
volatile immap_t *immap;
cp = cpmp; /* Get pointer to Communication Processor */
immap = (immap_t *)IMAP_ADDR; /* and to internal registers */
bd = (bd_t *)res;
/* Allocate some private information.
*/
cep = (struct cpm_enet_private *)kmalloc(sizeof(*cep), GFP_KERNEL);
/*memset(cep, 0, sizeof(*cep));*/
__clear_user(cep,sizeof(*cep));
/* Create an Ethernet device instance.
*/
dev = init_etherdev(0, 0);
/* Get pointer to SCC area in parameter RAM.
*/
ep = (scc_enet_t *)(&cp->cp_dparam[PROFF_ENET]);
/* And another to the SCC register area.
*/
sccp = (volatile scc_t *)(&cp->cp_scc[SCC_ENET]);
cep->sccp = (scc_t *)sccp; /* Keep the pointer handy */
/* Disable receive and transmit in case EPPC-Bug started it.
*/
sccp->scc_gsmrl &= ~(SCC_GSMRL_ENR | SCC_GSMRL_ENT);
/* Cookbook style from the MPC860 manual.....
* Not all of this is necessary if EPPC-Bug has initialized
* the network.
* So far we are lucky, all board configurations use the same
* pins, or at least the same I/O Port for these functions.....
* It can't last though......
*/
/* Configure port A pins for Txd and Rxd.
*/
immap->im_ioport.iop_papar |= (PA_ENET_RXD | PA_ENET_TXD);
immap->im_ioport.iop_padir &= ~(PA_ENET_RXD | PA_ENET_TXD);
immap->im_ioport.iop_paodr &= ~PA_ENET_TXD;
/* Configure port C pins to enable CLSN and RENA.
*/
immap->im_ioport.iop_pcpar &= ~(PC_ENET_CLSN | PC_ENET_RENA);
immap->im_ioport.iop_pcdir &= ~(PC_ENET_CLSN | PC_ENET_RENA);
immap->im_ioport.iop_pcso |= (PC_ENET_CLSN | PC_ENET_RENA);
/* Configure port A for TCLK and RCLK.
*/
immap->im_ioport.iop_papar |= (PA_ENET_TCLK | PA_ENET_RCLK);
immap->im_ioport.iop_padir &= ~(PA_ENET_TCLK | PA_ENET_RCLK);
/* Configure Serial Interface clock routing.
* First, clear all SCC bits to zero, then set the ones we want.
*/
cp->cp_sicr &= ~SICR_ENET_MASK;
cp->cp_sicr |= SICR_ENET_CLKRT;
/* Manual says set SDDR, but I can't find anything with that
* name. I think it is a misprint, and should be SDCR. This
* has already been set by the communication processor initialization.
*/
/* Allocate space for the buffer descriptors in the DP ram.
* These are relative offsets in the DP ram address space.
* Initialize base addresses for the buffer descriptors.
*/
i = m8xx_cpm_dpalloc(sizeof(cbd_t) * RX_RING_SIZE);
ep->sen_genscc.scc_rbase = i;
cep->rx_bd_base = (cbd_t *)&cp->cp_dpmem[i];
i = m8xx_cpm_dpalloc(sizeof(cbd_t) * TX_RING_SIZE);
ep->sen_genscc.scc_tbase = i;
cep->tx_bd_base = (cbd_t *)&cp->cp_dpmem[i];
cep->dirty_tx = cep->cur_tx = cep->tx_bd_base;
cep->cur_rx = cep->rx_bd_base;
/* Issue init Rx BD command for SCC.
* Manual says to perform an Init Rx parameters here. We have
* to perform both Rx and Tx because the SCC may have been
* already running.
* In addition, we have to do it later because we don't yet have
* all of the BD control/status set properly.
cp->cp_cpcr = mk_cr_cmd(CPM_CR_ENET, CPM_CR_INIT_RX) | CPM_CR_FLG;
while (cp->cp_cpcr & CPM_CR_FLG);
*/
/* Initialize function code registers for big-endian.
*/
ep->sen_genscc.scc_rfcr = SCC_EB;
ep->sen_genscc.scc_tfcr = SCC_EB;
/* Set maximum bytes per receive buffer.
* This appears to be an Ethernet frame size, not the buffer
* fragment size. It must be a multiple of four.
*/
ep->sen_genscc.scc_mrblr = PKT_MAXBLR_SIZE;
/* Set CRC preset and mask.
*/
ep->sen_cpres = 0xffffffff;
ep->sen_cmask = 0xdebb20e3;
ep->sen_crcec = 0; /* CRC Error counter */
ep->sen_alec = 0; /* alignment error counter */
ep->sen_disfc = 0; /* discard frame counter */
ep->sen_pads = 0x8888; /* Tx short frame pad character */
ep->sen_retlim = 15; /* Retry limit threshold */
ep->sen_maxflr = PKT_MAXBUF_SIZE; /* maximum frame length register */
ep->sen_minflr = PKT_MINBUF_SIZE; /* minimum frame length register */
ep->sen_maxd1 = PKT_MAXBUF_SIZE; /* maximum DMA1 length */
ep->sen_maxd2 = PKT_MAXBUF_SIZE; /* maximum DMA2 length */
/* Clear hash tables.
*/
ep->sen_gaddr1 = 0;
ep->sen_gaddr2 = 0;
ep->sen_gaddr3 = 0;
ep->sen_gaddr4 = 0;
ep->sen_iaddr1 = 0;
ep->sen_iaddr2 = 0;
ep->sen_iaddr3 = 0;
ep->sen_iaddr4 = 0;
/* Set Ethernet station address.
*
* If we performed a MBX diskless boot, the Ethernet controller
* has been initialized and we copy the address out into our
* own structure.
*/
eap = (unsigned char *)&(ep->sen_paddrh);
#ifndef CONFIG_MBX
for (i=5; i>=0; i--)
*eap++ = dev->dev_addr[i] = bd->bi_enetaddr[i];
#else
for (i=5; i>=0; i--)
dev->dev_addr[i] = *eap++;
#endif
ep->sen_pper = 0; /* 'cause the book says so */
ep->sen_taddrl = 0; /* temp address (LSB) */
ep->sen_taddrm = 0;
ep->sen_taddrh = 0; /* temp address (MSB) */
/* Now allocate the host memory pages and initialize the
* buffer descriptors.
*/
bdp = cep->tx_bd_base;
for (i=0; i<TX_RING_SIZE; i++) {
/* Initialize the BD for every fragment in the page.
*/
bdp->cbd_sc = 0;
bdp->cbd_bufaddr = 0;
bdp++;
}
/* Set the last buffer to wrap.
*/
bdp--;
bdp->cbd_sc |= BD_SC_WRAP;
bdp = cep->rx_bd_base;
for (i=0; i<CPM_ENET_RX_PAGES; i++) {
/* Allocate a page.
*/
mem_addr = __get_free_page(GFP_KERNEL);
/* Make it uncached.
*/
pte = va_to_pte(&init_task, mem_addr);
pte_val(*pte) |= _PAGE_NO_CACHE;
flush_tlb_page(current->mm->mmap, mem_addr);
/* Initialize the BD for every fragment in the page.
*/
for (j=0; j<CPM_ENET_RX_FRPPG; j++) {
bdp->cbd_sc = BD_ENET_RX_EMPTY | BD_ENET_RX_INTR;
bdp->cbd_bufaddr = __pa(mem_addr);
mem_addr += CPM_ENET_RX_FRSIZE;
bdp++;
}
}
/* Set the last buffer to wrap.
*/
bdp--;
bdp->cbd_sc |= BD_SC_WRAP;
/* Let's re-initialize the channel now. We have to do it later
* than the manual describes because we have just now finished
* the BD initialization.
*/
cp->cp_cpcr = mk_cr_cmd(CPM_CR_ENET, CPM_CR_INIT_TRX) | CPM_CR_FLG;
while (cp->cp_cpcr & CPM_CR_FLG);
cep->skb_cur = cep->skb_dirty = 0;
sccp->scc_scce = 0xffff; /* Clear any pending events */
/* Enable interrupts for transmit error, complete frame
* received, and any transmit buffer we have also set the
* interrupt flag.
*/
sccp->scc_sccm = (SCCE_ENET_TXE | SCCE_ENET_RXF | SCCE_ENET_TXB);
/* Install our interrupt handler.
*/
cpm_install_handler(CPMVEC_ENET, cpm_enet_interrupt, dev);
/* Set GSMR_H to enable all normal operating modes.
* Set GSMR_L to enable Ethernet to MC68160.
*/
sccp->scc_gsmrh = 0;
sccp->scc_gsmrl = (SCC_GSMRL_TCI | SCC_GSMRL_TPL_48 | SCC_GSMRL_TPP_10 | SCC_GSMRL_MODE_ENET);
/* Set sync/delimiters.
*/
sccp->scc_dsr = 0xd555;
/* Set processing mode. Use Ethernet CRC, catch broadcast, and
* start frame search 22 bit times after RENA.
*/
sccp->scc_pmsr = (SCC_PMSR_ENCRC | SCC_PMSR_NIB22);
/* It is now OK to enable the Ethernet transmitter.
* Unfortunately, there are board implementation differences here.
*/
#ifdef CONFIG_MBX
immap->im_ioport.iop_pcpar |= PC_ENET_TENA;
immap->im_ioport.iop_pcdir &= ~PC_ENET_TENA;
#endif
#if defined(CONFIG_RPXLITE) || defined(CONFIG_RPXCLASSIC)
cp->cp_pbpar |= PB_ENET_TENA;
cp->cp_pbdir |= PB_ENET_TENA;
/* And while we are here, set the configuration to enable ethernet.
*/
*((volatile uint *)RPX_CSR_ADDR) &= ~BCSR0_ETHLPBK;
*((volatile uint *)RPX_CSR_ADDR) |=
(BCSR0_ETHEN | BCSR0_COLTESTDIS | BCSR0_FULLDPLXDIS);
#endif
#ifdef CONFIG_BSEIP
cp->cp_pbpar |= PB_ENET_TENA;
cp->cp_pbdir |= PB_ENET_TENA;
/* BSE uses port B and C for PHY control.
*/
cp->cp_pbpar &= ~(PB_BSE_POWERUP | PB_BSE_FDXDIS);
cp->cp_pbdir |= (PB_BSE_POWERUP | PB_BSE_FDXDIS);
cp->cp_pbdat |= (PB_BSE_POWERUP | PB_BSE_FDXDIS);
immap->im_ioport.iop_pcpar &= ~PC_BSE_LOOPBACK;
immap->im_ioport.iop_pcdir |= PC_BSE_LOOPBACK;
immap->im_ioport.iop_pcso &= ~PC_BSE_LOOPBACK;
immap->im_ioport.iop_pcdat &= ~PC_BSE_LOOPBACK;
#endif
dev->base_addr = (unsigned long)ep;
dev->priv = cep;
dev->name = "CPM_ENET";
/* The CPM Ethernet specific entries in the device structure. */
dev->open = cpm_enet_open;
dev->hard_start_xmit = cpm_enet_start_xmit;
dev->stop = cpm_enet_close;
dev->get_stats = cpm_enet_get_stats;
dev->set_multicast_list = set_multicast_list;
/* And last, enable the transmit and receive processing.
*/
sccp->scc_gsmrl |= (SCC_GSMRL_ENR | SCC_GSMRL_ENT);
printk("CPM ENET Version 0.1, ");
for (i=0; i<5; i++)
printk("%02x:", dev->dev_addr[i]);
printk("%02x\n", dev->dev_addr[5]);
return 0;
}
static int sec_init(struct eth_device *dev, bd_t *bis)
{
int i;
volatile immap_t *immr = (immap_t *)CONFIG_SYS_IMMR;
scc_enet_t *pram_ptr;
uint dpaddr;
uchar ea[6];
rxIdx = 0;
txIdx = 0;
/*
* Assign static pointer to BD area.
* Avoid exhausting DPRAM, which would cause a panic.
*/
if (rtx == NULL) {
dpaddr = m8260_cpm_dpalloc(sizeof(RTXBD) + 2, 16);
rtx = (RTXBD *)&immr->im_dprambase[dpaddr];
}
/* 24.21 - (1-3): ioports have been set up already */
/* 24.21 - (4,5): connect SCC's tx and rx clocks, use NMSI for SCC */
immr->im_cpmux.cmx_uar = 0;
immr->im_cpmux.cmx_scr = ( (immr->im_cpmux.cmx_scr & ~CMXSCR_MASK) |
CONFIG_SYS_CMXSCR_VALUE);
/* 24.21 (6) write RBASE and TBASE to parameter RAM */
pram_ptr = (scc_enet_t *)&(immr->im_dprambase[PROFF_ENET]);
pram_ptr->sen_genscc.scc_rbase = (unsigned int)(&rtx->rxbd[0]);
pram_ptr->sen_genscc.scc_tbase = (unsigned int)(&rtx->txbd[0]);
pram_ptr->sen_genscc.scc_rfcr = 0x18; /* Nrml Ops and Mot byte ordering */
pram_ptr->sen_genscc.scc_tfcr = 0x18; /* Mot byte ordering, Nrml access */
pram_ptr->sen_genscc.scc_mrblr = DBUF_LENGTH; /* max. package len 1520 */
pram_ptr->sen_cpres = ~(0x0); /* Preset CRC */
pram_ptr->sen_cmask = 0xdebb20e3; /* Constant Mask for CRC */
/* 24.21 - (7): Write INIT RX AND TX PARAMETERS to CPCR */
while(immr->im_cpm.cp_cpcr & CPM_CR_FLG);
immr->im_cpm.cp_cpcr = mk_cr_cmd(CPM_CR_ENET_PAGE,
CPM_CR_ENET_SBLOCK,
0x0c,
CPM_CR_INIT_TRX) | CPM_CR_FLG;
/* 24.21 - (8-18): Set up parameter RAM */
pram_ptr->sen_crcec = 0x0; /* Error Counter CRC (unused) */
pram_ptr->sen_alec = 0x0; /* Align Error Counter (unused) */
pram_ptr->sen_disfc = 0x0; /* Discard Frame Counter (unused) */
pram_ptr->sen_pads = 0x8888; /* Short Frame PAD Characters */
pram_ptr->sen_retlim = 15; /* Retry Limit Threshold */
pram_ptr->sen_maxflr = 1518; /* MAX Frame Length Register */
pram_ptr->sen_minflr = 64; /* MIN Frame Length Register */
pram_ptr->sen_maxd1 = DBUF_LENGTH; /* MAX DMA1 Length Register */
pram_ptr->sen_maxd2 = DBUF_LENGTH; /* MAX DMA2 Length Register */
pram_ptr->sen_gaddr1 = 0x0; /* Group Address Filter 1 (unused) */
pram_ptr->sen_gaddr2 = 0x0; /* Group Address Filter 2 (unused) */
pram_ptr->sen_gaddr3 = 0x0; /* Group Address Filter 3 (unused) */
pram_ptr->sen_gaddr4 = 0x0; /* Group Address Filter 4 (unused) */
eth_getenv_enetaddr("ethaddr", ea);
pram_ptr->sen_paddrh = (ea[5] << 8) + ea[4];
pram_ptr->sen_paddrm = (ea[3] << 8) + ea[2];
pram_ptr->sen_paddrl = (ea[1] << 8) + ea[0];
pram_ptr->sen_pper = 0x0; /* Persistence (unused) */
pram_ptr->sen_iaddr1 = 0x0; /* Individual Address Filter 1 (unused) */
pram_ptr->sen_iaddr2 = 0x0; /* Individual Address Filter 2 (unused) */
pram_ptr->sen_iaddr3 = 0x0; /* Individual Address Filter 3 (unused) */
pram_ptr->sen_iaddr4 = 0x0; /* Individual Address Filter 4 (unused) */
pram_ptr->sen_taddrh = 0x0; /* Tmp Address (MSB) (unused) */
pram_ptr->sen_taddrm = 0x0; /* Tmp Address (unused) */
pram_ptr->sen_taddrl = 0x0; /* Tmp Address (LSB) (unused) */
/* 24.21 - (19): Initialize RxBD */
for (i = 0; i < PKTBUFSRX; i++)
{
rtx->rxbd[i].cbd_sc = BD_ENET_RX_EMPTY;
rtx->rxbd[i].cbd_datlen = 0; /* Reset */
rtx->rxbd[i].cbd_bufaddr = (uint)net_rx_packets[i];
}
rtx->rxbd[PKTBUFSRX - 1].cbd_sc |= BD_ENET_RX_WRAP;
/* 24.21 - (20): Initialize TxBD */
for (i = 0; i < TX_BUF_CNT; i++)
{
rtx->txbd[i].cbd_sc = (BD_ENET_TX_PAD |
BD_ENET_TX_LAST |
BD_ENET_TX_TC);
rtx->txbd[i].cbd_datlen = 0; /* Reset */
rtx->txbd[i].cbd_bufaddr = (uint)&txbuf[i][0];
}
rtx->txbd[TX_BUF_CNT - 1].cbd_sc |= BD_ENET_TX_WRAP;
/* 24.21 - (21): Write 0xffff to SCCE */
immr->im_scc[CONFIG_ETHER_INDEX-1].scc_scce = ~(0x0);
/* 24.21 - (22): Write to SCCM to enable TXE, RXF, TXB events */
immr->im_scc[CONFIG_ETHER_INDEX-1].scc_sccm = (SCCE_ENET_TXE |
SCCE_ENET_RXF |
SCCE_ENET_TXB);
/* 24.21 - (23): we don't use ethernet interrupts */
/* 24.21 - (24): Clear GSMR_H to enable normal operations */
immr->im_scc[CONFIG_ETHER_INDEX-1].scc_gsmrh = 0;
/* 24.21 - (25): Clear GSMR_L to enable normal operations */
immr->im_scc[CONFIG_ETHER_INDEX-1].scc_gsmrl = (SCC_GSMRL_TCI |
SCC_GSMRL_TPL_48 |
SCC_GSMRL_TPP_10 |
SCC_GSMRL_MODE_ENET);
/* 24.21 - (26): Initialize DSR */
immr->im_scc[CONFIG_ETHER_INDEX-1].scc_dsr = 0xd555;
/* 24.21 - (27): Initialize PSMR2
*
* Settings:
* CRC = 32-Bit CCITT
* NIB = Begin searching for SFD 22 bits after RENA
* FDE = Full Duplex Enable
* BRO = Reject broadcast packets
* PROMISCOUS = Catch all packets regardless of dest. MAC adress
*/
immr->im_scc[CONFIG_ETHER_INDEX-1].scc_psmr = SCC_PSMR_ENCRC |
SCC_PSMR_NIB22 |
#if defined(CONFIG_SCC_ENET_FULL_DUPLEX)
SCC_PSMR_FDE |
#endif
#if defined(CONFIG_SCC_ENET_NO_BROADCAST)
SCC_PSMR_BRO |
#endif
#if defined(CONFIG_SCC_ENET_PROMISCOUS)
SCC_PSMR_PRO |
#endif
0;
/* 24.21 - (28): Write to GSMR_L to enable SCC */
immr->im_scc[CONFIG_ETHER_INDEX-1].scc_gsmrl |= (SCC_GSMRL_ENR |
SCC_GSMRL_ENT);
return 0;
}
/* Initialize the CPM Ethernet on SCC. If EPPC-Bug loaded us, or performed
* some other network I/O, a whole bunch of this has already been set up.
* It is no big deal if we do it again, we just have to disable the
* transmit and receive to make sure we don't catch the CPM with some
* inconsistent control information.
*/
static int __init scc_enet_init(void)
{
struct net_device *dev;
struct scc_enet_private *cep;
int i, j, k, err;
uint dp_offset;
unsigned char *eap, *ba;
dma_addr_t mem_addr;
bd_t *bd;
volatile cbd_t *bdp;
volatile cpm8xx_t *cp;
volatile scc_t *sccp;
volatile scc_enet_t *ep;
volatile immap_t *immap;
cp = cpmp; /* Get pointer to Communication Processor */
immap = (immap_t *)(mfspr(IMMR) & 0xFFFF0000); /* and to internal registers */
bd = (bd_t *)__res;
dev = alloc_etherdev(sizeof(*cep));
if (!dev)
return -ENOMEM;
cep = dev->priv;
spin_lock_init(&cep->lock);
/* Get pointer to SCC area in parameter RAM.
*/
ep = (scc_enet_t *)(&cp->cp_dparam[PROFF_ENET]);
/* And another to the SCC register area.
*/
sccp = (volatile scc_t *)(&cp->cp_scc[SCC_ENET]);
cep->sccp = (scc_t *)sccp; /* Keep the pointer handy */
/* Disable receive and transmit in case EPPC-Bug started it.
*/
sccp->scc_gsmrl &= ~(SCC_GSMRL_ENR | SCC_GSMRL_ENT);
/* Cookbook style from the MPC860 manual.....
* Not all of this is necessary if EPPC-Bug has initialized
* the network.
* So far we are lucky, all board configurations use the same
* pins, or at least the same I/O Port for these functions.....
* It can't last though......
*/
#if (defined(PA_ENET_RXD) && defined(PA_ENET_TXD))
/* Configure port A pins for Txd and Rxd.
*/
immap->im_ioport.iop_papar |= (PA_ENET_RXD | PA_ENET_TXD);
immap->im_ioport.iop_padir &= ~(PA_ENET_RXD | PA_ENET_TXD);
immap->im_ioport.iop_paodr &= ~PA_ENET_TXD;
#elif (defined(PB_ENET_RXD) && defined(PB_ENET_TXD))
/* Configure port B pins for Txd and Rxd.
*/
immap->im_cpm.cp_pbpar |= (PB_ENET_RXD | PB_ENET_TXD);
immap->im_cpm.cp_pbdir &= ~(PB_ENET_RXD | PB_ENET_TXD);
immap->im_cpm.cp_pbodr &= ~PB_ENET_TXD;
#else
#error Exactly ONE pair of PA_ENET_[RT]XD, PB_ENET_[RT]XD must be defined
#endif
#if defined(PC_ENET_LBK)
/* Configure port C pins to disable External Loopback
*/
immap->im_ioport.iop_pcpar &= ~PC_ENET_LBK;
immap->im_ioport.iop_pcdir |= PC_ENET_LBK;
immap->im_ioport.iop_pcso &= ~PC_ENET_LBK;
immap->im_ioport.iop_pcdat &= ~PC_ENET_LBK; /* Disable Loopback */
#endif /* PC_ENET_LBK */
#ifdef PE_ENET_TCLK
/* Configure port E for TCLK and RCLK.
*/
cp->cp_pepar |= (PE_ENET_TCLK | PE_ENET_RCLK);
cp->cp_pedir &= ~(PE_ENET_TCLK | PE_ENET_RCLK);
cp->cp_peso &= ~(PE_ENET_TCLK | PE_ENET_RCLK);
#else
/* Configure port A for TCLK and RCLK.
*/
immap->im_ioport.iop_papar |= (PA_ENET_TCLK | PA_ENET_RCLK);
immap->im_ioport.iop_padir &= ~(PA_ENET_TCLK | PA_ENET_RCLK);
#endif
/* Configure port C pins to enable CLSN and RENA.
*/
immap->im_ioport.iop_pcpar &= ~(PC_ENET_CLSN | PC_ENET_RENA);
immap->im_ioport.iop_pcdir &= ~(PC_ENET_CLSN | PC_ENET_RENA);
immap->im_ioport.iop_pcso |= (PC_ENET_CLSN | PC_ENET_RENA);
/* Configure Serial Interface clock routing.
* First, clear all SCC bits to zero, then set the ones we want.
*/
cp->cp_sicr &= ~SICR_ENET_MASK;
cp->cp_sicr |= SICR_ENET_CLKRT;
/* Manual says set SDDR, but I can't find anything with that
* name. I think it is a misprint, and should be SDCR. This
* has already been set by the communication processor initialization.
*/
/* Allocate space for the buffer descriptors in the DP ram.
* These are relative offsets in the DP ram address space.
* Initialize base addresses for the buffer descriptors.
*/
dp_offset = cpm_dpalloc(sizeof(cbd_t) * RX_RING_SIZE, 8);
ep->sen_genscc.scc_rbase = dp_offset;
cep->rx_bd_base = cpm_dpram_addr(dp_offset);
dp_offset = cpm_dpalloc(sizeof(cbd_t) * TX_RING_SIZE, 8);
ep->sen_genscc.scc_tbase = dp_offset;
cep->tx_bd_base = cpm_dpram_addr(dp_offset);
cep->dirty_tx = cep->cur_tx = cep->tx_bd_base;
cep->cur_rx = cep->rx_bd_base;
/* Issue init Rx BD command for SCC.
* Manual says to perform an Init Rx parameters here. We have
* to perform both Rx and Tx because the SCC may have been
* already running.
* In addition, we have to do it later because we don't yet have
* all of the BD control/status set properly.
cp->cp_cpcr = mk_cr_cmd(CPM_CR_ENET, CPM_CR_INIT_RX) | CPM_CR_FLG;
while (cp->cp_cpcr & CPM_CR_FLG);
*/
/* Initialize function code registers for big-endian.
*/
ep->sen_genscc.scc_rfcr = SCC_EB;
ep->sen_genscc.scc_tfcr = SCC_EB;
/* Set maximum bytes per receive buffer.
* This appears to be an Ethernet frame size, not the buffer
* fragment size. It must be a multiple of four.
*/
ep->sen_genscc.scc_mrblr = PKT_MAXBLR_SIZE;
/* Set CRC preset and mask.
*/
ep->sen_cpres = 0xffffffff;
ep->sen_cmask = 0xdebb20e3;
ep->sen_crcec = 0; /* CRC Error counter */
ep->sen_alec = 0; /* alignment error counter */
ep->sen_disfc = 0; /* discard frame counter */
ep->sen_pads = 0x8888; /* Tx short frame pad character */
ep->sen_retlim = 15; /* Retry limit threshold */
ep->sen_maxflr = PKT_MAXBUF_SIZE; /* maximum frame length register */
ep->sen_minflr = PKT_MINBUF_SIZE; /* minimum frame length register */
ep->sen_maxd1 = PKT_MAXBLR_SIZE; /* maximum DMA1 length */
ep->sen_maxd2 = PKT_MAXBLR_SIZE; /* maximum DMA2 length */
/* Clear hash tables.
*/
ep->sen_gaddr1 = 0;
ep->sen_gaddr2 = 0;
ep->sen_gaddr3 = 0;
ep->sen_gaddr4 = 0;
ep->sen_iaddr1 = 0;
ep->sen_iaddr2 = 0;
ep->sen_iaddr3 = 0;
ep->sen_iaddr4 = 0;
/* Set Ethernet station address.
*/
eap = (unsigned char *)&(ep->sen_paddrh);
for (i=5; i>=0; i--)
*eap++ = dev->dev_addr[i] = bd->bi_enetaddr[i];
ep->sen_pper = 0; /* 'cause the book says so */
ep->sen_taddrl = 0; /* temp address (LSB) */
ep->sen_taddrm = 0;
ep->sen_taddrh = 0; /* temp address (MSB) */
/* Now allocate the host memory pages and initialize the
* buffer descriptors.
*/
bdp = cep->tx_bd_base;
for (i=0; i<TX_RING_SIZE; i++) {
/* Initialize the BD for every fragment in the page.
*/
bdp->cbd_sc = 0;
bdp->cbd_bufaddr = 0;
bdp++;
}
/* Set the last buffer to wrap.
*/
bdp--;
bdp->cbd_sc |= BD_SC_WRAP;
bdp = cep->rx_bd_base;
k = 0;
for (i=0; i<CPM_ENET_RX_PAGES; i++) {
/* Allocate a page.
*/
ba = (unsigned char *)dma_alloc_coherent(NULL, PAGE_SIZE,
&mem_addr, GFP_KERNEL);
/* BUG: no check for failure */
/* Initialize the BD for every fragment in the page.
*/
for (j=0; j<CPM_ENET_RX_FRPPG; j++) {
bdp->cbd_sc = BD_ENET_RX_EMPTY | BD_ENET_RX_INTR;
bdp->cbd_bufaddr = mem_addr;
cep->rx_vaddr[k++] = ba;
mem_addr += CPM_ENET_RX_FRSIZE;
ba += CPM_ENET_RX_FRSIZE;
bdp++;
}
}
/* Set the last buffer to wrap.
*/
bdp--;
bdp->cbd_sc |= BD_SC_WRAP;
/* Let's re-initialize the channel now. We have to do it later
* than the manual describes because we have just now finished
* the BD initialization.
*/
cp->cp_cpcr = mk_cr_cmd(CPM_CR_ENET, CPM_CR_INIT_TRX) | CPM_CR_FLG;
while (cp->cp_cpcr & CPM_CR_FLG);
cep->skb_cur = cep->skb_dirty = 0;
sccp->scc_scce = 0xffff; /* Clear any pending events */
/* Enable interrupts for transmit error, complete frame
* received, and any transmit buffer we have also set the
* interrupt flag.
*/
sccp->scc_sccm = (SCCE_ENET_TXE | SCCE_ENET_RXF | SCCE_ENET_TXB);
/* Install our interrupt handler.
*/
cpm_install_handler(CPMVEC_ENET, scc_enet_interrupt, dev);
/* Set GSMR_H to enable all normal operating modes.
* Set GSMR_L to enable Ethernet to MC68160.
*/
sccp->scc_gsmrh = 0;
sccp->scc_gsmrl = (SCC_GSMRL_TCI | SCC_GSMRL_TPL_48 | SCC_GSMRL_TPP_10 | SCC_GSMRL_MODE_ENET);
/* Set sync/delimiters.
*/
sccp->scc_dsr = 0xd555;
/* Set processing mode. Use Ethernet CRC, catch broadcast, and
* start frame search 22 bit times after RENA.
*/
sccp->scc_psmr = (SCC_PSMR_ENCRC | SCC_PSMR_NIB22);
/* It is now OK to enable the Ethernet transmitter.
* Unfortunately, there are board implementation differences here.
*/
#if (!defined (PB_ENET_TENA) && defined (PC_ENET_TENA) && !defined (PE_ENET_TENA))
immap->im_ioport.iop_pcpar |= PC_ENET_TENA;
immap->im_ioport.iop_pcdir &= ~PC_ENET_TENA;
#elif ( defined (PB_ENET_TENA) && !defined (PC_ENET_TENA) && !defined (PE_ENET_TENA))
cp->cp_pbpar |= PB_ENET_TENA;
cp->cp_pbdir |= PB_ENET_TENA;
#elif ( !defined (PB_ENET_TENA) && !defined (PC_ENET_TENA) && defined (PE_ENET_TENA))
cp->cp_pepar |= PE_ENET_TENA;
cp->cp_pedir &= ~PE_ENET_TENA;
cp->cp_peso |= PE_ENET_TENA;
#else
#error Configuration Error: define exactly ONE of PB_ENET_TENA, PC_ENET_TENA, PE_ENET_TENA
#endif
#if defined(CONFIG_RPXLITE) || defined(CONFIG_RPXCLASSIC)
/* And while we are here, set the configuration to enable ethernet.
*/
*((volatile uint *)RPX_CSR_ADDR) &= ~BCSR0_ETHLPBK;
*((volatile uint *)RPX_CSR_ADDR) |=
(BCSR0_ETHEN | BCSR0_COLTESTDIS | BCSR0_FULLDPLXDIS);
#endif
#ifdef CONFIG_BSEIP
/* BSE uses port B and C for PHY control.
*/
cp->cp_pbpar &= ~(PB_BSE_POWERUP | PB_BSE_FDXDIS);
cp->cp_pbdir |= (PB_BSE_POWERUP | PB_BSE_FDXDIS);
cp->cp_pbdat |= (PB_BSE_POWERUP | PB_BSE_FDXDIS);
immap->im_ioport.iop_pcpar &= ~PC_BSE_LOOPBACK;
immap->im_ioport.iop_pcdir |= PC_BSE_LOOPBACK;
immap->im_ioport.iop_pcso &= ~PC_BSE_LOOPBACK;
immap->im_ioport.iop_pcdat &= ~PC_BSE_LOOPBACK;
#endif
#ifdef CONFIG_FADS
cp->cp_pbpar |= PB_ENET_TENA;
cp->cp_pbdir |= PB_ENET_TENA;
/* Enable the EEST PHY.
*/
*((volatile uint *)BCSR1) &= ~BCSR1_ETHEN;
#endif
#ifdef CONFIG_MPC885ADS
/* Deassert PHY reset and enable the PHY.
*/
{
volatile uint __iomem *bcsr = ioremap(BCSR_ADDR, BCSR_SIZE);
uint tmp;
tmp = in_be32(bcsr + 1 /* BCSR1 */);
tmp |= BCSR1_ETHEN;
out_be32(bcsr + 1, tmp);
tmp = in_be32(bcsr + 4 /* BCSR4 */);
tmp |= BCSR4_ETH10_RST;
out_be32(bcsr + 4, tmp);
iounmap(bcsr);
}
/* On MPC885ADS SCC ethernet PHY defaults to the full duplex mode
* upon reset. SCC is set to half duplex by default. So this
* inconsistency should be better fixed by the software.
*/
#endif
dev->base_addr = (unsigned long)ep;
#if 0
dev->name = "CPM_ENET";
#endif
/* The CPM Ethernet specific entries in the device structure. */
dev->open = scc_enet_open;
dev->hard_start_xmit = scc_enet_start_xmit;
dev->tx_timeout = scc_enet_timeout;
dev->watchdog_timeo = TX_TIMEOUT;
dev->stop = scc_enet_close;
dev->get_stats = scc_enet_get_stats;
dev->set_multicast_list = set_multicast_list;
err = register_netdev(dev);
if (err) {
free_netdev(dev);
return err;
}
/* And last, enable the transmit and receive processing.
*/
sccp->scc_gsmrl |= (SCC_GSMRL_ENR | SCC_GSMRL_ENT);
printk("%s: CPM ENET Version 0.2 on SCC%d, ", dev->name, SCC_ENET+1);
for (i=0; i<5; i++)
printk("%02x:", dev->dev_addr[i]);
printk("%02x\n", dev->dev_addr[5]);
return 0;
}
static int __init cpm_load_init (void)
{
int i;
struct proc_dir_entry *entry;
ulong timep, flags;
volatile immap_t *immap = (immap_t *) IMAP_ADDR;
volatile cpm8xx_t *cp = &immap->im_cpm;
volatile risc_timer_t *rtram =
(risc_timer_t *) & cp->cp_dparam[PROFF_RTIMER];
entry = create_proc_entry (PROC_NAME,
S_IFREG | S_IRUGO | S_IWUGO,
NULL);
if (entry == NULL) {
printk ("Unable to create /proc/%s entry\n", PROC_NAME);
return -EINVAL;
}
entry->read_proc = cpm_load_proc_read;
entry->write_proc = cpm_load_proc_write;
/* Make sure the RISC Timer tick clock is disabled.
*/
#ifdef RCCR_BUG
*(uint *) & (immap->im_cpm.cp_rccr) &= ~0x80000000;
#else
immap->im_cpm.cp_rccr &= ~0x8000;
#endif
timep = 15;
/* Write the timep value to the rccr register.
*/
#ifdef RCCR_BUG
*(uint *) & (immap->im_cpm.cp_rccr) &= ~(0x3f << 24);
*(uint *) & (immap->im_cpm.cp_rccr) |= timep << 24;
#else
immap->im_cpm.cp_rccr &= ~(0x3f << 8);
immap->im_cpm.cp_rccr |= timep << 8;
#endif
/* Allocate DPRAM for the timers.
*/
risc_dpram_timers = m8xx_cpm_dpalloc (sizeof (ulong) * RISC_TIMER_MAX);
rtram->tm_base = risc_dpram_timers;
/* Clear number of ticks elapsed.
*/
rtram->tm_cnt = 0;
/* Clear all RISC Timer events.
*/
immap->im_cpm.cp_rter = 0xffff;
/* Disable all RISC Timer interrupts.
*/
immap->im_cpm.cp_rtmr = 0x0000;
for (i = 0; i < RISC_TIMER_MAX; i++) {
int timeout = 0;
rtram->tm_cmd = (i << 16) | timeout;
rtram->tm_cmd |= 0xC0000000; /* periodic */
/* Wait for a previous command to clear.
*/
while (cp->cp_cpcr & CPM_CR_FLG);
/* Issue SET TIMER command.
*/
cp->cp_cpcr = mk_cr_cmd (CPM_CR_CH_TIMER, CPM_CR_SET_TIMER) |
CPM_CR_FLG;
#if 0
while (cp->cp_cpcr & CPM_CR_FLG);
#endif
}
/* Initialize a general purpose timer.
* We have to use both Timer 1 and Timer 2 to get the desired
* clock of 1/16384 system clock, which the MPC860 manual
* suggests.
*/
/* reset timer1 and timer2 */
immap->im_cpmtimer.cpmt_tgcr &= ~(CPMTIMER_TGCR_GM1 |
CPMTIMER_TGCR_FRZ1 |
CPMTIMER_TGCR_STP1 |
CPMTIMER_TGCR_CAS2 |
CPMTIMER_TGCR_FRZ2 |
CPMTIMER_TGCR_STP2);
immap->im_cpmtimer.cpmt_tmr1 = 0x0; /* timer2 is the clock source */
immap->im_cpmtimer.cpmt_trr1 = 0xffff;
immap->im_cpmtimer.cpmt_tcr1 = 0;
immap->im_cpmtimer.cpmt_tcn1 = 0;
immap->im_cpmtimer.cpmt_ter1 = 0xffff;
immap->im_cpmtimer.cpmt_tmr2 = 0xff04 | 0x8;
immap->im_cpmtimer.cpmt_trr2 = 0x3;
immap->im_cpmtimer.cpmt_tcr2 = 0;
immap->im_cpmtimer.cpmt_tcn2 = 0;
immap->im_cpmtimer.cpmt_ter2 = 0xffff;
save_flags (flags);
cli ();
/* Start the RISC Timers.
*/
#ifdef RCCR_BUG
*(uint *) & (immap->im_cpm.cp_rccr) |= 0x80000000;
#else
immap->im_cpm.cp_rccr |= 0x8000;
#endif
/* Start the general purpose timers.
*/
immap->im_cpmtimer.cpmt_tgcr |=
CPMTIMER_TGCR_RST1 | CPMTIMER_TGCR_RST2;
restore_flags (flags);
printk (KERN_INFO "CPM load tracking driver " DRIVER_VERSION "\n");
return 0;
}
static int fec_init(struct eth_device* dev, bd_t *bis)
{
struct ether_fcc_info_s * info = dev->priv;
int i;
volatile immap_t *immr = (immap_t *)CFG_IMMR;
volatile ccsr_cpm_cp_t *cp = &(immr->im_cpm.im_cpm_cp);
fcc_enet_t *pram_ptr;
unsigned long mem_addr;
#if 0
mii_discover_phy();
#endif
/* 28.9 - (1-2): ioports have been set up already */
/* 28.9 - (3): connect FCC's tx and rx clocks */
immr->im_cpm.im_cpm_mux.cmxuar = 0; /* ATM */
immr->im_cpm.im_cpm_mux.cmxfcr = (immr->im_cpm.im_cpm_mux.cmxfcr & ~info->cmxfcr_mask) |
info->cmxfcr_value;
/* 28.9 - (4): GFMR: disable tx/rx, CCITT CRC, set Mode Ethernet */
if(info->ether_index == 0) {
immr->im_cpm.im_cpm_fcc1.gfmr = FCC_GFMR_MODE_ENET | FCC_GFMR_TCRC_32;
} else if (info->ether_index == 1) {
immr->im_cpm.im_cpm_fcc2.gfmr = FCC_GFMR_MODE_ENET | FCC_GFMR_TCRC_32;
} else if (info->ether_index == 2) {
immr->im_cpm.im_cpm_fcc3.gfmr = FCC_GFMR_MODE_ENET | FCC_GFMR_TCRC_32;
}
/* 28.9 - (5): FPSMR: enable full duplex, select CCITT CRC for Ethernet,MII */
if(info->ether_index == 0) {
immr->im_cpm.im_cpm_fcc1.fpsmr = CFG_FCC_PSMR | FCC_PSMR_ENCRC;
} else if (info->ether_index == 1){
immr->im_cpm.im_cpm_fcc2.fpsmr = CFG_FCC_PSMR | FCC_PSMR_ENCRC;
} else if (info->ether_index == 2){
immr->im_cpm.im_cpm_fcc3.fpsmr = CFG_FCC_PSMR | FCC_PSMR_ENCRC;
}
/* 28.9 - (6): FDSR: Ethernet Syn */
if(info->ether_index == 0) {
immr->im_cpm.im_cpm_fcc1.fdsr = 0xD555;
} else if (info->ether_index == 1) {
immr->im_cpm.im_cpm_fcc2.fdsr = 0xD555;
} else if (info->ether_index == 2) {
immr->im_cpm.im_cpm_fcc3.fdsr = 0xD555;
}
/* reset indeces to current rx/tx bd (see eth_send()/eth_rx()) */
rxIdx = 0;
txIdx = 0;
/* Setup Receiver Buffer Descriptors */
for (i = 0; i < PKTBUFSRX; i++)
{
rtx.rxbd[i].cbd_sc = BD_ENET_RX_EMPTY;
rtx.rxbd[i].cbd_datlen = 0;
rtx.rxbd[i].cbd_bufaddr = (uint)NetRxPackets[i];
}
rtx.rxbd[PKTBUFSRX - 1].cbd_sc |= BD_ENET_RX_WRAP;
/* Setup Ethernet Transmitter Buffer Descriptors */
for (i = 0; i < TX_BUF_CNT; i++)
{
rtx.txbd[i].cbd_sc = 0;
rtx.txbd[i].cbd_datlen = 0;
rtx.txbd[i].cbd_bufaddr = 0;
}
rtx.txbd[TX_BUF_CNT - 1].cbd_sc |= BD_ENET_TX_WRAP;
/* 28.9 - (7): initialize parameter ram */
pram_ptr = (fcc_enet_t *)&(immr->im_cpm.im_dprambase[info->proff_enet]);
/* clear whole structure to make sure all reserved fields are zero */
memset((void*)pram_ptr, 0, sizeof(fcc_enet_t));
/*
* common Parameter RAM area
*
* Allocate space in the reserved FCC area of DPRAM for the
* internal buffers. No one uses this space (yet), so we
* can do this. Later, we will add resource management for
* this area. CPM_FCC_SPECIAL_BASE: 0xb000.
*/
mem_addr = CPM_FCC_SPECIAL_BASE + ((info->ether_index) * 64);
pram_ptr->fen_genfcc.fcc_riptr = mem_addr;
pram_ptr->fen_genfcc.fcc_tiptr = mem_addr+32;
/*
* Set maximum bytes per receive buffer.
* It must be a multiple of 32.
*/
pram_ptr->fen_genfcc.fcc_mrblr = PKT_MAXBLR_SIZE; /* 1536 */
/* localbus SDRAM should be preferred */
pram_ptr->fen_genfcc.fcc_rstate = (CPMFCR_GBL | CPMFCR_EB |
CFG_CPMFCR_RAMTYPE) << 24;
pram_ptr->fen_genfcc.fcc_rbase = (unsigned int)(&rtx.rxbd[rxIdx]);
pram_ptr->fen_genfcc.fcc_rbdstat = 0;
pram_ptr->fen_genfcc.fcc_rbdlen = 0;
pram_ptr->fen_genfcc.fcc_rdptr = 0;
/* localbus SDRAM should be preferred */
pram_ptr->fen_genfcc.fcc_tstate = (CPMFCR_GBL | CPMFCR_EB |
CFG_CPMFCR_RAMTYPE) << 24;
pram_ptr->fen_genfcc.fcc_tbase = (unsigned int)(&rtx.txbd[txIdx]);
pram_ptr->fen_genfcc.fcc_tbdstat = 0;
pram_ptr->fen_genfcc.fcc_tbdlen = 0;
pram_ptr->fen_genfcc.fcc_tdptr = 0;
/* protocol-specific area */
pram_ptr->fen_statbuf = 0x0;
pram_ptr->fen_cmask = 0xdebb20e3; /* CRC mask */
pram_ptr->fen_cpres = 0xffffffff; /* CRC preset */
pram_ptr->fen_crcec = 0;
pram_ptr->fen_alec = 0;
pram_ptr->fen_disfc = 0;
pram_ptr->fen_retlim = 15; /* Retry limit threshold */
pram_ptr->fen_retcnt = 0;
pram_ptr->fen_pper = 0;
pram_ptr->fen_boffcnt = 0;
pram_ptr->fen_gaddrh = 0;
pram_ptr->fen_gaddrl = 0;
pram_ptr->fen_mflr = PKT_MAXBUF_SIZE; /* maximum frame length register */
/*
* Set Ethernet station address.
*
* This is supplied in the board information structure, so we
* copy that into the controller.
* So far we have only been given one Ethernet address. We make
* it unique by setting a few bits in the upper byte of the
* non-static part of the address.
*/
#define ea eth_get_dev()->enetaddr
pram_ptr->fen_paddrh = (ea[5] << 8) + ea[4];
pram_ptr->fen_paddrm = (ea[3] << 8) + ea[2];
pram_ptr->fen_paddrl = (ea[1] << 8) + ea[0];
#undef ea
pram_ptr->fen_ibdcount = 0;
pram_ptr->fen_ibdstart = 0;
pram_ptr->fen_ibdend = 0;
pram_ptr->fen_txlen = 0;
pram_ptr->fen_iaddrh = 0; /* disable hash */
pram_ptr->fen_iaddrl = 0;
pram_ptr->fen_minflr = PKT_MINBUF_SIZE; /* minimum frame length register: 64 */
/* pad pointer. use tiptr since we don't need a specific padding char */
pram_ptr->fen_padptr = pram_ptr->fen_genfcc.fcc_tiptr;
pram_ptr->fen_maxd1 = PKT_MAXDMA_SIZE; /* maximum DMA1 length:1520 */
pram_ptr->fen_maxd2 = PKT_MAXDMA_SIZE; /* maximum DMA2 length:1520 */
#if defined(ET_DEBUG)
printf("parm_ptr(0xff788500) = %p\n",pram_ptr);
printf("pram_ptr->fen_genfcc.fcc_rbase %08x\n",
pram_ptr->fen_genfcc.fcc_rbase);
printf("pram_ptr->fen_genfcc.fcc_tbase %08x\n",
pram_ptr->fen_genfcc.fcc_tbase);
#endif
/* 28.9 - (8)(9): clear out events in FCCE */
/* 28.9 - (9): FCCM: mask all events */
if(info->ether_index == 0) {
immr->im_cpm.im_cpm_fcc1.fcce = ~0x0;
immr->im_cpm.im_cpm_fcc1.fccm = 0;
} else if (info->ether_index == 1) {
immr->im_cpm.im_cpm_fcc2.fcce = ~0x0;
immr->im_cpm.im_cpm_fcc2.fccm = 0;
} else if (info->ether_index == 2) {
immr->im_cpm.im_cpm_fcc3.fcce = ~0x0;
immr->im_cpm.im_cpm_fcc3.fccm = 0;
}
/* 28.9 - (10-12): we don't use ethernet interrupts */
/* 28.9 - (13)
*
* Let's re-initialize the channel now. We have to do it later
* than the manual describes because we have just now finished
* the BD initialization.
*/
cp->cpcr = mk_cr_cmd(info->cpm_cr_enet_page,
info->cpm_cr_enet_sblock,
0x0c,
CPM_CR_INIT_TRX) | CPM_CR_FLG;
do {
__asm__ __volatile__ ("eieio");
} while (cp->cpcr & CPM_CR_FLG);
/* 28.9 - (14): enable tx/rx in gfmr */
if(info->ether_index == 0) {
immr->im_cpm.im_cpm_fcc1.gfmr |= FCC_GFMR_ENT | FCC_GFMR_ENR;
} else if (info->ether_index == 1) {
immr->im_cpm.im_cpm_fcc2.gfmr |= FCC_GFMR_ENT | FCC_GFMR_ENR;
} else if (info->ether_index == 2) {
immr->im_cpm.im_cpm_fcc3.gfmr |= FCC_GFMR_ENT | FCC_GFMR_ENR;
}
return 1;
}
/* Initialize the CPM Ethernet on SCC. If EPPC-Bug loaded us, or performed
* some other network I/O, a whole bunch of this has already been set up.
* It is no big deal if we do it again, we just have to disable the
* transmit and receive to make sure we don't catch the CPM with some
* inconsistent control information.
*/
int __init scc_enet_init(void)
{
struct rtnet_device *rtdev = NULL;
struct scc_enet_private *cep;
int i, j, k;
unsigned char *eap, *ba;
dma_addr_t mem_addr;
bd_t *bd;
volatile cbd_t *bdp;
volatile cpm8xx_t *cp;
volatile scc_t *sccp;
volatile scc_enet_t *ep;
volatile immap_t *immap;
cp = cpmp; /* Get pointer to Communication Processor */
immap = (immap_t *)(mfspr(IMMR) & 0xFFFF0000); /* and to internal registers */
bd = (bd_t *)__res;
/* Configure the SCC parameters (this has formerly be done
* by macro definitions).
*/
switch (rtnet_scc) {
case 3:
CPM_CR_ENET = CPM_CR_CH_SCC3;
PROFF_ENET = PROFF_SCC3;
SCC_ENET = 2; /* Index, not number! */
CPMVEC_ENET = CPMVEC_SCC3;
break;
case 2:
CPM_CR_ENET = CPM_CR_CH_SCC2;
PROFF_ENET = PROFF_SCC2;
SCC_ENET = 1; /* Index, not number! */
CPMVEC_ENET = CPMVEC_SCC2;
break;
case 1:
CPM_CR_ENET = CPM_CR_CH_SCC1;
PROFF_ENET = PROFF_SCC1;
SCC_ENET = 0; /* Index, not number! */
CPMVEC_ENET = CPMVEC_SCC1;
break;
default:
printk(KERN_ERR "enet: SCC%d doesn't exit (check rtnet_scc)\n", rtnet_scc);
return -1;
}
/* Allocate some private information and create an Ethernet device instance.
*/
rtdev = rtdev_root = rt_alloc_etherdev(sizeof(struct scc_enet_private));
if (rtdev == NULL) {
printk(KERN_ERR "enet: Could not allocate ethernet device.\n");
return -1;
}
rtdev_alloc_name(rtdev, "rteth%d");
rt_rtdev_connect(rtdev, &RTDEV_manager);
RTNET_SET_MODULE_OWNER(rtdev);
rtdev->vers = RTDEV_VERS_2_0;
cep = (struct scc_enet_private *)rtdev->priv;
rtdm_lock_init(&cep->lock);
/* Get pointer to SCC area in parameter RAM.
*/
ep = (scc_enet_t *)(&cp->cp_dparam[PROFF_ENET]);
/* And another to the SCC register area.
*/
sccp = (volatile scc_t *)(&cp->cp_scc[SCC_ENET]);
cep->sccp = (scc_t *)sccp; /* Keep the pointer handy */
/* Disable receive and transmit in case EPPC-Bug started it.
*/
sccp->scc_gsmrl &= ~(SCC_GSMRL_ENR | SCC_GSMRL_ENT);
/* Cookbook style from the MPC860 manual.....
* Not all of this is necessary if EPPC-Bug has initialized
* the network.
* So far we are lucky, all board configurations use the same
* pins, or at least the same I/O Port for these functions.....
* It can't last though......
*/
#if (defined(PA_ENET_RXD) && defined(PA_ENET_TXD))
/* Configure port A pins for Txd and Rxd.
*/
immap->im_ioport.iop_papar |= (PA_ENET_RXD | PA_ENET_TXD);
immap->im_ioport.iop_padir &= ~(PA_ENET_RXD | PA_ENET_TXD);
immap->im_ioport.iop_paodr &= ~PA_ENET_TXD;
#elif (defined(PB_ENET_RXD) && defined(PB_ENET_TXD))
/* Configure port B pins for Txd and Rxd.
*/
immap->im_cpm.cp_pbpar |= (PB_ENET_RXD | PB_ENET_TXD);
immap->im_cpm.cp_pbdir &= ~(PB_ENET_RXD | PB_ENET_TXD);
immap->im_cpm.cp_pbodr &= ~PB_ENET_TXD;
#else
#error Exactly ONE pair of PA_ENET_[RT]XD, PB_ENET_[RT]XD must be defined
#endif
#if defined(PC_ENET_LBK)
/* Configure port C pins to disable External Loopback
*/
immap->im_ioport.iop_pcpar &= ~PC_ENET_LBK;
immap->im_ioport.iop_pcdir |= PC_ENET_LBK;
immap->im_ioport.iop_pcso &= ~PC_ENET_LBK;
immap->im_ioport.iop_pcdat &= ~PC_ENET_LBK; /* Disable Loopback */
#endif /* PC_ENET_LBK */
/* Configure port C pins to enable CLSN and RENA.
*/
immap->im_ioport.iop_pcpar &= ~(PC_ENET_CLSN | PC_ENET_RENA);
immap->im_ioport.iop_pcdir &= ~(PC_ENET_CLSN | PC_ENET_RENA);
immap->im_ioport.iop_pcso |= (PC_ENET_CLSN | PC_ENET_RENA);
/* Configure port A for TCLK and RCLK.
*/
immap->im_ioport.iop_papar |= (PA_ENET_TCLK | PA_ENET_RCLK);
immap->im_ioport.iop_padir &= ~(PA_ENET_TCLK | PA_ENET_RCLK);
/* Configure Serial Interface clock routing.
* First, clear all SCC bits to zero, then set the ones we want.
*/
cp->cp_sicr &= ~SICR_ENET_MASK;
cp->cp_sicr |= SICR_ENET_CLKRT;
/* Manual says set SDDR, but I can't find anything with that
* name. I think it is a misprint, and should be SDCR. This
* has already been set by the communication processor initialization.
*/
/* Allocate space for the buffer descriptors in the DP ram.
* These are relative offsets in the DP ram address space.
* Initialize base addresses for the buffer descriptors.
*/
i = m8xx_cpm_dpalloc(sizeof(cbd_t) * RX_RING_SIZE);
ep->sen_genscc.scc_rbase = i;
cep->rx_bd_base = (cbd_t *)&cp->cp_dpmem[i];
i = m8xx_cpm_dpalloc(sizeof(cbd_t) * TX_RING_SIZE);
ep->sen_genscc.scc_tbase = i;
cep->tx_bd_base = (cbd_t *)&cp->cp_dpmem[i];
cep->dirty_tx = cep->cur_tx = cep->tx_bd_base;
cep->cur_rx = cep->rx_bd_base;
/* Issue init Rx BD command for SCC.
* Manual says to perform an Init Rx parameters here. We have
* to perform both Rx and Tx because the SCC may have been
* already running.
* In addition, we have to do it later because we don't yet have
* all of the BD control/status set properly.
cp->cp_cpcr = mk_cr_cmd(CPM_CR_ENET, CPM_CR_INIT_RX) | CPM_CR_FLG;
while (cp->cp_cpcr & CPM_CR_FLG);
*/
/* Initialize function code registers for big-endian.
*/
ep->sen_genscc.scc_rfcr = SCC_EB;
ep->sen_genscc.scc_tfcr = SCC_EB;
/* Set maximum bytes per receive buffer.
* This appears to be an Ethernet frame size, not the buffer
* fragment size. It must be a multiple of four.
*/
ep->sen_genscc.scc_mrblr = PKT_MAXBLR_SIZE;
/* Set CRC preset and mask.
*/
ep->sen_cpres = 0xffffffff;
ep->sen_cmask = 0xdebb20e3;
ep->sen_crcec = 0; /* CRC Error counter */
ep->sen_alec = 0; /* alignment error counter */
ep->sen_disfc = 0; /* discard frame counter */
ep->sen_pads = 0x8888; /* Tx short frame pad character */
ep->sen_retlim = 15; /* Retry limit threshold */
ep->sen_maxflr = PKT_MAXBUF_SIZE; /* maximum frame length register */
ep->sen_minflr = PKT_MINBUF_SIZE; /* minimum frame length register */
ep->sen_maxd1 = PKT_MAXBLR_SIZE; /* maximum DMA1 length */
ep->sen_maxd2 = PKT_MAXBLR_SIZE; /* maximum DMA2 length */
/* Clear hash tables.
*/
ep->sen_gaddr1 = 0;
ep->sen_gaddr2 = 0;
ep->sen_gaddr3 = 0;
ep->sen_gaddr4 = 0;
ep->sen_iaddr1 = 0;
ep->sen_iaddr2 = 0;
ep->sen_iaddr3 = 0;
ep->sen_iaddr4 = 0;
/* Set Ethernet station address.
*/
eap = (unsigned char *)&(ep->sen_paddrh);
#ifdef CONFIG_FEC_ENET
/* We need a second MAC address if FEC is used by Linux */
for (i=5; i>=0; i--)
*eap++ = rtdev->dev_addr[i] = (bd->bi_enetaddr[i] |
(i==3 ? 0x80 : 0));
#else
for (i=5; i>=0; i--)
*eap++ = rtdev->dev_addr[i] = bd->bi_enetaddr[i];
#endif
ep->sen_pper = 0; /* 'cause the book says so */
ep->sen_taddrl = 0; /* temp address (LSB) */
ep->sen_taddrm = 0;
ep->sen_taddrh = 0; /* temp address (MSB) */
/* Now allocate the host memory pages and initialize the
* buffer descriptors.
*/
bdp = cep->tx_bd_base;
for (i=0; i<TX_RING_SIZE; i++) {
/* Initialize the BD for every fragment in the page.
*/
bdp->cbd_sc = 0;
bdp->cbd_bufaddr = 0;
bdp++;
}
/* Set the last buffer to wrap.
*/
bdp--;
bdp->cbd_sc |= BD_SC_WRAP;
bdp = cep->rx_bd_base;
k = 0;
for (i=0; i<CPM_ENET_RX_PAGES; i++) {
/* Allocate a page.
*/
ba = (unsigned char *)consistent_alloc(GFP_KERNEL, PAGE_SIZE, &mem_addr);
/* Initialize the BD for every fragment in the page.
*/
for (j=0; j<CPM_ENET_RX_FRPPG; j++) {
bdp->cbd_sc = BD_ENET_RX_EMPTY | BD_ENET_RX_INTR;
bdp->cbd_bufaddr = mem_addr;
cep->rx_vaddr[k++] = ba;
mem_addr += CPM_ENET_RX_FRSIZE;
ba += CPM_ENET_RX_FRSIZE;
bdp++;
}
}
/* Set the last buffer to wrap.
*/
bdp--;
bdp->cbd_sc |= BD_SC_WRAP;
/* Let's re-initialize the channel now. We have to do it later
* than the manual describes because we have just now finished
* the BD initialization.
*/
cp->cp_cpcr = mk_cr_cmd(CPM_CR_ENET, CPM_CR_INIT_TRX) | CPM_CR_FLG;
while (cp->cp_cpcr & CPM_CR_FLG);
cep->skb_cur = cep->skb_dirty = 0;
sccp->scc_scce = 0xffff; /* Clear any pending events */
/* Enable interrupts for transmit error, complete frame
* received, and any transmit buffer we have also set the
* interrupt flag.
*/
sccp->scc_sccm = (SCCE_ENET_TXE | SCCE_ENET_RXF | SCCE_ENET_TXB);
/* Install our interrupt handler.
*/
rtdev->irq = CPM_IRQ_OFFSET + CPMVEC_ENET;
rt_stack_connect(rtdev, &STACK_manager);
if ((i = rtdm_irq_request(&cep->irq_handle, rtdev->irq,
scc_enet_interrupt, 0, "rt_mpc8xx_enet", rtdev))) {
printk(KERN_ERR "Couldn't request IRQ %d\n", rtdev->irq);
rtdev_free(rtdev);
return i;
}
/* Set GSMR_H to enable all normal operating modes.
* Set GSMR_L to enable Ethernet to MC68160.
*/
sccp->scc_gsmrh = 0;
sccp->scc_gsmrl = (SCC_GSMRL_TCI | SCC_GSMRL_TPL_48 | SCC_GSMRL_TPP_10 | SCC_GSMRL_MODE_ENET);
/* Set sync/delimiters.
*/
sccp->scc_dsr = 0xd555;
/* Set processing mode. Use Ethernet CRC, catch broadcast, and
* start frame search 22 bit times after RENA.
*/
sccp->scc_pmsr = (SCC_PMSR_ENCRC | SCC_PMSR_NIB22);
/* It is now OK to enable the Ethernet transmitter.
* Unfortunately, there are board implementation differences here.
*/
#if (!defined (PB_ENET_TENA) && defined (PC_ENET_TENA))
immap->im_ioport.iop_pcpar |= PC_ENET_TENA;
immap->im_ioport.iop_pcdir &= ~PC_ENET_TENA;
#elif ( defined (PB_ENET_TENA) && !defined (PC_ENET_TENA))
cp->cp_pbpar |= PB_ENET_TENA;
cp->cp_pbdir |= PB_ENET_TENA;
#else
#error Configuration Error: define exactly ONE of PB_ENET_TENA, PC_ENET_TENA
#endif
#if defined(CONFIG_RPXLITE) || defined(CONFIG_RPXCLASSIC)
/* And while we are here, set the configuration to enable ethernet.
*/
*((volatile uint *)RPX_CSR_ADDR) &= ~BCSR0_ETHLPBK;
*((volatile uint *)RPX_CSR_ADDR) |=
(BCSR0_ETHEN | BCSR0_COLTESTDIS | BCSR0_FULLDPLXDIS);
#endif
#ifdef CONFIG_BSEIP
/* BSE uses port B and C for PHY control.
*/
cp->cp_pbpar &= ~(PB_BSE_POWERUP | PB_BSE_FDXDIS);
cp->cp_pbdir |= (PB_BSE_POWERUP | PB_BSE_FDXDIS);
cp->cp_pbdat |= (PB_BSE_POWERUP | PB_BSE_FDXDIS);
immap->im_ioport.iop_pcpar &= ~PC_BSE_LOOPBACK;
immap->im_ioport.iop_pcdir |= PC_BSE_LOOPBACK;
immap->im_ioport.iop_pcso &= ~PC_BSE_LOOPBACK;
immap->im_ioport.iop_pcdat &= ~PC_BSE_LOOPBACK;
#endif
#ifdef CONFIG_FADS
cp->cp_pbpar |= PB_ENET_TENA;
cp->cp_pbdir |= PB_ENET_TENA;
/* Enable the EEST PHY.
*/
*((volatile uint *)BCSR1) &= ~BCSR1_ETHEN;
#endif
rtdev->base_addr = (unsigned long)ep;
/* The CPM Ethernet specific entries in the device structure. */
rtdev->open = scc_enet_open;
rtdev->hard_start_xmit = scc_enet_start_xmit;
rtdev->stop = scc_enet_close;
rtdev->hard_header = &rt_eth_header;
rtdev->get_stats = scc_enet_get_stats;
if (!rx_pool_size)
rx_pool_size = RX_RING_SIZE * 2;
if (rtskb_pool_init(&cep->skb_pool, rx_pool_size) < rx_pool_size) {
rtdm_irq_disable(&cep->irq_handle);
rtdm_irq_free(&cep->irq_handle);
rtskb_pool_release(&cep->skb_pool);
rtdev_free(rtdev);
return -ENOMEM;
}
if ((i = rt_register_rtnetdev(rtdev))) {
printk(KERN_ERR "Couldn't register rtdev\n");
rtdm_irq_disable(&cep->irq_handle);
rtdm_irq_free(&cep->irq_handle);
rtskb_pool_release(&cep->skb_pool);
rtdev_free(rtdev);
return i;
}
/* And last, enable the transmit and receive processing.
*/
sccp->scc_gsmrl |= (SCC_GSMRL_ENR | SCC_GSMRL_ENT);
printk("%s: CPM ENET Version 0.2 on SCC%d, irq %d, addr %02x:%02x:%02x:%02x:%02x:%02x\n",
rtdev->name, SCC_ENET+1, rtdev->irq,
rtdev->dev_addr[0], rtdev->dev_addr[1], rtdev->dev_addr[2],
rtdev->dev_addr[3], rtdev->dev_addr[4], rtdev->dev_addr[5]);
return 0;
}
/* Initialize the CPM Ethernet on SCC.
*/
static int __init scc_enet_init(void)
{
struct net_device *dev;
struct scc_enet_private *cep;
int i, j, err;
uint dp_offset;
unsigned char *eap;
unsigned long mem_addr;
bd_t *bd;
volatile cbd_t *bdp;
volatile cpm_cpm2_t *cp;
volatile scc_t *sccp;
volatile scc_enet_t *ep;
volatile cpm2_map_t *immap;
volatile iop_cpm2_t *io;
cp = cpmp; /* Get pointer to Communication Processor */
immap = (cpm2_map_t *)CPM_MAP_ADDR; /* and to internal registers */
io = &immap->im_ioport;
bd = (bd_t *)__res;
/* Create an Ethernet device instance.
*/
dev = alloc_etherdev(sizeof(*cep));
if (!dev)
return -ENOMEM;
cep = dev->priv;
spin_lock_init(&cep->lock);
/* Get pointer to SCC area in parameter RAM.
*/
ep = (scc_enet_t *)(&immap->im_dprambase[PROFF_ENET]);
/* And another to the SCC register area.
*/
sccp = (volatile scc_t *)(&immap->im_scc[SCC_ENET]);
cep->sccp = (scc_t *)sccp; /* Keep the pointer handy */
/* Disable receive and transmit in case someone left it running.
*/
sccp->scc_gsmrl &= ~(SCC_GSMRL_ENR | SCC_GSMRL_ENT);
/* Configure port C and D pins for SCC Ethernet. This
* won't work for all SCC possibilities....it will be
* board/port specific.
*/
io->iop_pparc |=
(PC_ENET_RENA | PC_ENET_CLSN | PC_ENET_TXCLK | PC_ENET_RXCLK);
io->iop_pdirc &=
~(PC_ENET_RENA | PC_ENET_CLSN | PC_ENET_TXCLK | PC_ENET_RXCLK);
io->iop_psorc &=
~(PC_ENET_RENA | PC_ENET_TXCLK | PC_ENET_RXCLK);
io->iop_psorc |= PC_ENET_CLSN;
io->iop_ppard |= (PD_ENET_RXD | PD_ENET_TXD | PD_ENET_TENA);
io->iop_pdird |= (PD_ENET_TXD | PD_ENET_TENA);
io->iop_pdird &= ~PD_ENET_RXD;
io->iop_psord |= PD_ENET_TXD;
io->iop_psord &= ~(PD_ENET_RXD | PD_ENET_TENA);
/* Configure Serial Interface clock routing.
* First, clear all SCC bits to zero, then set the ones we want.
*/
immap->im_cpmux.cmx_scr &= ~CMX_CLK_MASK;
immap->im_cpmux.cmx_scr |= CMX_CLK_ROUTE;
/* Allocate space for the buffer descriptors in the DP ram.
* These are relative offsets in the DP ram address space.
* Initialize base addresses for the buffer descriptors.
*/
dp_offset = cpm_dpalloc(sizeof(cbd_t) * RX_RING_SIZE, 8);
ep->sen_genscc.scc_rbase = dp_offset;
cep->rx_bd_base = (cbd_t *)cpm_dpram_addr(dp_offset);
dp_offset = cpm_dpalloc(sizeof(cbd_t) * TX_RING_SIZE, 8);
ep->sen_genscc.scc_tbase = dp_offset;
cep->tx_bd_base = (cbd_t *)cpm_dpram_addr(dp_offset);
cep->dirty_tx = cep->cur_tx = cep->tx_bd_base;
cep->cur_rx = cep->rx_bd_base;
ep->sen_genscc.scc_rfcr = CPMFCR_GBL | CPMFCR_EB;
ep->sen_genscc.scc_tfcr = CPMFCR_GBL | CPMFCR_EB;
/* Set maximum bytes per receive buffer.
* This appears to be an Ethernet frame size, not the buffer
* fragment size. It must be a multiple of four.
*/
ep->sen_genscc.scc_mrblr = PKT_MAXBLR_SIZE;
/* Set CRC preset and mask.
*/
ep->sen_cpres = 0xffffffff;
ep->sen_cmask = 0xdebb20e3;
ep->sen_crcec = 0; /* CRC Error counter */
ep->sen_alec = 0; /* alignment error counter */
ep->sen_disfc = 0; /* discard frame counter */
ep->sen_pads = 0x8888; /* Tx short frame pad character */
ep->sen_retlim = 15; /* Retry limit threshold */
ep->sen_maxflr = PKT_MAXBUF_SIZE; /* maximum frame length register */
ep->sen_minflr = PKT_MINBUF_SIZE; /* minimum frame length register */
ep->sen_maxd1 = PKT_MAXBLR_SIZE; /* maximum DMA1 length */
ep->sen_maxd2 = PKT_MAXBLR_SIZE; /* maximum DMA2 length */
/* Clear hash tables.
*/
ep->sen_gaddr1 = 0;
ep->sen_gaddr2 = 0;
ep->sen_gaddr3 = 0;
ep->sen_gaddr4 = 0;
ep->sen_iaddr1 = 0;
ep->sen_iaddr2 = 0;
ep->sen_iaddr3 = 0;
ep->sen_iaddr4 = 0;
/* Set Ethernet station address.
*
* This is supplied in the board information structure, so we
* copy that into the controller.
*/
eap = (unsigned char *)&(ep->sen_paddrh);
for (i=5; i>=0; i--)
*eap++ = dev->dev_addr[i] = bd->bi_enetaddr[i];
ep->sen_pper = 0; /* 'cause the book says so */
ep->sen_taddrl = 0; /* temp address (LSB) */
ep->sen_taddrm = 0;
ep->sen_taddrh = 0; /* temp address (MSB) */
/* Now allocate the host memory pages and initialize the
* buffer descriptors.
*/
bdp = cep->tx_bd_base;
for (i=0; i<TX_RING_SIZE; i++) {
/* Initialize the BD for every fragment in the page.
*/
bdp->cbd_sc = 0;
bdp->cbd_bufaddr = 0;
bdp++;
}
/* Set the last buffer to wrap.
*/
bdp--;
bdp->cbd_sc |= BD_SC_WRAP;
bdp = cep->rx_bd_base;
for (i=0; i<CPM_ENET_RX_PAGES; i++) {
/* Allocate a page.
*/
mem_addr = __get_free_page(GFP_KERNEL);
/* BUG: no check for failure */
/* Initialize the BD for every fragment in the page.
*/
for (j=0; j<CPM_ENET_RX_FRPPG; j++) {
bdp->cbd_sc = BD_ENET_RX_EMPTY | BD_ENET_RX_INTR;
bdp->cbd_bufaddr = __pa(mem_addr);
mem_addr += CPM_ENET_RX_FRSIZE;
bdp++;
}
}
/* Set the last buffer to wrap.
*/
bdp--;
bdp->cbd_sc |= BD_SC_WRAP;
/* Let's re-initialize the channel now. We have to do it later
* than the manual describes because we have just now finished
* the BD initialization.
*/
cpmp->cp_cpcr = mk_cr_cmd(CPM_ENET_PAGE, CPM_ENET_BLOCK, 0,
CPM_CR_INIT_TRX) | CPM_CR_FLG;
while (cp->cp_cpcr & CPM_CR_FLG);
cep->skb_cur = cep->skb_dirty = 0;
sccp->scc_scce = 0xffff; /* Clear any pending events */
/* Enable interrupts for transmit error, complete frame
* received, and any transmit buffer we have also set the
* interrupt flag.
*/
sccp->scc_sccm = (SCCE_ENET_TXE | SCCE_ENET_RXF | SCCE_ENET_TXB);
/* Install our interrupt handler.
*/
request_irq(SIU_INT_ENET, scc_enet_interrupt, 0, "enet", dev);
/* BUG: no check for failure */
/* Set GSMR_H to enable all normal operating modes.
* Set GSMR_L to enable Ethernet to MC68160.
*/
sccp->scc_gsmrh = 0;
sccp->scc_gsmrl = (SCC_GSMRL_TCI | SCC_GSMRL_TPL_48 | SCC_GSMRL_TPP_10 | SCC_GSMRL_MODE_ENET);
/* Set sync/delimiters.
*/
sccp->scc_dsr = 0xd555;
/* Set processing mode. Use Ethernet CRC, catch broadcast, and
* start frame search 22 bit times after RENA.
*/
sccp->scc_psmr = (SCC_PSMR_ENCRC | SCC_PSMR_NIB22);
/* It is now OK to enable the Ethernet transmitter.
* Unfortunately, there are board implementation differences here.
*/
io->iop_pparc &= ~(PC_EST8260_ENET_LOOPBACK |
PC_EST8260_ENET_SQE | PC_EST8260_ENET_NOTFD);
io->iop_psorc &= ~(PC_EST8260_ENET_LOOPBACK |
PC_EST8260_ENET_SQE | PC_EST8260_ENET_NOTFD);
io->iop_pdirc |= (PC_EST8260_ENET_LOOPBACK |
PC_EST8260_ENET_SQE | PC_EST8260_ENET_NOTFD);
io->iop_pdatc &= ~(PC_EST8260_ENET_LOOPBACK | PC_EST8260_ENET_SQE);
io->iop_pdatc |= PC_EST8260_ENET_NOTFD;
dev->base_addr = (unsigned long)ep;
/* The CPM Ethernet specific entries in the device structure. */
dev->open = scc_enet_open;
dev->hard_start_xmit = scc_enet_start_xmit;
dev->tx_timeout = scc_enet_timeout;
dev->watchdog_timeo = TX_TIMEOUT;
dev->stop = scc_enet_close;
dev->get_stats = scc_enet_get_stats;
dev->set_multicast_list = set_multicast_list;
/* And last, enable the transmit and receive processing.
*/
sccp->scc_gsmrl |= (SCC_GSMRL_ENR | SCC_GSMRL_ENT);
err = register_netdev(dev);
if (err) {
free_netdev(dev);
return err;
}
printk("%s: SCC ENET Version 0.1, ", dev->name);
for (i=0; i<5; i++)
printk("%02x:", dev->dev_addr[i]);
printk("%02x\n", dev->dev_addr[5]);
return 0;
}
void
kgdb_serial_init (void)
{
volatile immap_t *im = (immap_t *)CONFIG_SYS_IMMR;
volatile smc_t *sp;
volatile smc_uart_t *up;
volatile cbd_t *tbdf, *rbdf;
volatile cpm8260_t *cp = &(im->im_cpm);
uint dpaddr, speed = CONFIG_KGDB_BAUDRATE;
char *s, *e;
if ((s = getenv("kgdbrate")) != NULL && *s != '\0') {
ulong rate = simple_strtoul(s, &e, 10);
if (e > s && *e == '\0')
speed = rate;
}
/* initialize pointers to SMC */
sp = (smc_t *) &(im->im_smc[KGDB_SMC_INDEX]);
*(ushort *)(&im->im_dprambase[KGDB_PROFF_SMC_BASE]) = KGDB_PROFF_SMC;
up = (smc_uart_t *)&im->im_dprambase[KGDB_PROFF_SMC];
/* Disable transmitter/receiver. */
sp->smc_smcmr &= ~(SMCMR_REN | SMCMR_TEN);
/* NOTE: I/O port pins are set up via the iop_conf_tab[] table */
/* Allocate space for two buffer descriptors in the DP ram.
* damm: allocating space after the two buffers for rx/tx data
*/
dpaddr = m8260_cpm_dpalloc((2 * sizeof (cbd_t)) + 2, 16);
/* Set the physical address of the host memory buffers in
* the buffer descriptors.
*/
rbdf = (cbd_t *)&im->im_dprambase[dpaddr];
rbdf->cbd_bufaddr = (uint) (rbdf+2);
rbdf->cbd_sc = 0;
tbdf = rbdf + 1;
tbdf->cbd_bufaddr = ((uint) (rbdf+2)) + 1;
tbdf->cbd_sc = 0;
/* Set up the uart parameters in the parameter ram. */
up->smc_rbase = dpaddr;
up->smc_tbase = dpaddr+sizeof(cbd_t);
up->smc_rfcr = CPMFCR_EB;
up->smc_tfcr = CPMFCR_EB;
up->smc_brklen = 0;
up->smc_brkec = 0;
up->smc_brkcr = 0;
/* Set UART mode, 8 bit, no parity, one stop.
* Enable receive and transmit.
*/
sp->smc_smcmr = smcr_mk_clen(9) | SMCMR_SM_UART;
/* Mask all interrupts and remove anything pending. */
sp->smc_smcm = 0;
sp->smc_smce = 0xff;
/* put the SMC channel into NMSI (non multiplexd serial interface)
* mode and wire either BRG7 to SMC1 or BRG8 to SMC2 (15-17).
*/
im->im_cpmux.cmx_smr =
(im->im_cpmux.cmx_smr & ~KGDB_CMXSMR_MASK) | KGDB_CMXSMR_VALUE;
/* Set up the baud rate generator. */
#if defined(CONFIG_KGDB_USE_EXTC)
m8260_cpm_extcbrg(brg_map[KGDB_SMC_INDEX], speed,
CONFIG_KGDB_EXTC_RATE, CONFIG_KGDB_EXTC_PINSEL);
#else
m8260_cpm_setbrg(brg_map[KGDB_SMC_INDEX], speed);
#endif
/* Make the first buffer the only buffer. */
tbdf->cbd_sc |= BD_SC_WRAP;
rbdf->cbd_sc |= BD_SC_EMPTY | BD_SC_WRAP;
/* Single character receive. */
up->smc_mrblr = 1;
up->smc_maxidl = 0;
/* Initialize Tx/Rx parameters. */
while (cp->cp_cpcr & CPM_CR_FLG) /* wait if cp is busy */
;
cp->cp_cpcr = mk_cr_cmd(KGDB_CPM_CR_SMC_PAGE, KGDB_CPM_CR_SMC_SBLOCK,
0, CPM_CR_INIT_TRX) | CPM_CR_FLG;
while (cp->cp_cpcr & CPM_CR_FLG) /* wait if cp is busy */
;
/* Enable transmitter/receiver. */
sp->smc_smcmr |= SMCMR_REN | SMCMR_TEN;
printf("SMC%d at %dbps ", CONFIG_KGDB_INDEX, speed);
}
int serial_init (void)
{
volatile immap_t *im = (immap_t *)CFG_IMMR;
volatile ccsr_cpm_scc_t *sp;
volatile scc_uart_t *up;
volatile cbd_t *tbdf, *rbdf;
volatile ccsr_cpm_cp_t *cp = &(im->im_cpm.im_cpm_cp);
uint dpaddr;
/* initialize pointers to SCC */
sp = (ccsr_cpm_scc_t *) &(im->im_cpm.im_cpm_scc[SCC_INDEX]);
up = (scc_uart_t *)&(im->im_cpm.im_dprambase[PROFF_SCC]);
/* Disable transmitter/receiver.
*/
sp->gsmrl &= ~(SCC_GSMRL_ENR | SCC_GSMRL_ENT);
/* put the SCC channel into NMSI (non multiplexd serial interface)
* mode and wire the selected SCC Tx and Rx clocks to BRGx (15-15).
*/
im->im_cpm.im_cpm_mux.cmxscr = \
(im->im_cpm.im_cpm_mux.cmxscr&~CMXSCR_MASK)|CMXSCR_VALUE;
/* Set up the baud rate generator.
*/
serial_setbrg ();
/* Allocate space for two buffer descriptors in the DP ram.
* damm: allocating space after the two buffers for rx/tx data
*/
dpaddr = m8560_cpm_dpalloc((2 * sizeof (cbd_t)) + 2, 16);
/* Set the physical address of the host memory buffers in
* the buffer descriptors.
*/
rbdf = (cbd_t *)&(im->im_cpm.im_dprambase[dpaddr]);
rbdf->cbd_bufaddr = (uint) (rbdf+2);
rbdf->cbd_sc = BD_SC_EMPTY | BD_SC_WRAP;
tbdf = rbdf + 1;
tbdf->cbd_bufaddr = ((uint) (rbdf+2)) + 1;
tbdf->cbd_sc = BD_SC_WRAP;
/* Set up the uart parameters in the parameter ram.
*/
up->scc_genscc.scc_rbase = dpaddr;
up->scc_genscc.scc_tbase = dpaddr+sizeof(cbd_t);
up->scc_genscc.scc_rfcr = CPMFCR_EB;
up->scc_genscc.scc_tfcr = CPMFCR_EB;
up->scc_genscc.scc_mrblr = 1;
up->scc_maxidl = 0;
up->scc_brkcr = 1;
up->scc_parec = 0;
up->scc_frmec = 0;
up->scc_nosec = 0;
up->scc_brkec = 0;
up->scc_uaddr1 = 0;
up->scc_uaddr2 = 0;
up->scc_toseq = 0;
up->scc_char1 = up->scc_char2 = up->scc_char3 = up->scc_char4 = 0x8000;
up->scc_char5 = up->scc_char6 = up->scc_char7 = up->scc_char8 = 0x8000;
up->scc_rccm = 0xc0ff;
/* Mask all interrupts and remove anything pending.
*/
sp->sccm = 0;
sp->scce = 0xffff;
/* Set 8 bit FIFO, 16 bit oversampling and UART mode.
*/
sp->gsmrh = SCC_GSMRH_RFW; /* 8 bit FIFO */
sp->gsmrl = \
SCC_GSMRL_TDCR_16 | SCC_GSMRL_RDCR_16 | SCC_GSMRL_MODE_UART;
/* Set CTS no flow control, 1 stop bit, 8 bit character length,
* normal async UART mode, no parity
*/
sp->psmr = SCU_PSMR_CL;
/* execute the "Init Rx and Tx params" CP command.
*/
while (cp->cpcr & CPM_CR_FLG) /* wait if cp is busy */
;
cp->cpcr = mk_cr_cmd(CPM_CR_SCC_PAGE, CPM_CR_SCC_SBLOCK,
0, CPM_CR_INIT_TRX) | CPM_CR_FLG;
while (cp->cpcr & CPM_CR_FLG) /* wait if cp is busy */
;
/* Enable transmitter/receiver.
*/
sp->gsmrl |= SCC_GSMRL_ENR | SCC_GSMRL_ENT;
return (0);
}
unsigned long
serial_init(int ignored, bd_t *bd)
{
volatile smc_t *sp;
volatile smc_uart_t *up;
volatile cbd_t *tbdf, *rbdf;
volatile cpm8xx_t *cp;
uint dpaddr, memaddr;
#ifndef CONFIG_MBX
uint ui;
#endif
cp = cpmp;
sp = (smc_t*)&(cp->cp_smc[SMC_INDEX]);
up = (smc_uart_t *)&cp->cp_dparam[PROFF_CONS];
/* Disable transmitter/receiver.
*/
sp->smc_smcmr &= ~(SMCMR_REN | SMCMR_TEN);
#ifdef CONFIG_FADS
/* Enable SMC1/2 transceivers.
*/
*((volatile uint *)BCSR1) &= ~(BCSR1_RS232EN_1|BCSR1_RS232EN_2);
#endif
#ifndef CONFIG_MBX
{
/* Initialize SMCx and use it for the console port.
*/
/* Enable SDMA.
*/
((immap_t *)IMAP_ADDR)->im_siu_conf.sc_sdcr = 1;
#ifdef TQM_SMC2_CONSOLE
/* Use Port A for SMC2 instead of other functions.
*/
iopp->iop_papar |= 0x00c0;
iopp->iop_padir &= ~0x00c0;
iopp->iop_paodr &= ~0x00c0;
#else
/* Use Port B for SMCs instead of other functions.
*/
cp->cp_pbpar |= 0x00000cc0;
cp->cp_pbdir &= ~0x00000cc0;
cp->cp_pbodr &= ~0x00000cc0;
#endif
/* Allocate space for two buffer descriptors in the DP ram.
* For now, this address seems OK, but it may have to
* change with newer versions of the firmware.
*/
dpaddr = 0x0800;
/* Grab a few bytes from the top of memory for SMC FIFOs.
*/
memaddr = (bd->bi_memsize - 32) & ~15;
/* Set the physical address of the host memory buffers in
* the buffer descriptors.
*/
rbdf = (cbd_t *)&cp->cp_dpmem[dpaddr];
rbdf->cbd_bufaddr = memaddr;
rbdf->cbd_sc = 0;
tbdf = rbdf + 1;
tbdf->cbd_bufaddr = memaddr+4;
tbdf->cbd_sc = 0;
/* Set up the uart parameters in the parameter ram.
*/
up->smc_rbase = dpaddr;
up->smc_tbase = dpaddr+sizeof(cbd_t);
up->smc_rfcr = SMC_EB;
up->smc_tfcr = SMC_EB;
/* Set UART mode, 8 bit, no parity, one stop.
* Enable receive and transmit.
*/
sp->smc_smcmr = smcr_mk_clen(9) | SMCMR_SM_UART;
/* Mask all interrupts and remove anything pending.
*/
sp->smc_smcm = 0;
sp->smc_smce = 0xff;
/* Set up the baud rate generator.
* See 8xx_io/commproc.c for details.
* This wires BRG1 to SMC1 and BRG2 to SMC2;
*/
cp->cp_simode = 0x10000000;
ui = bd->bi_intfreq / 16 / bd->bi_baudrate;
#ifdef TQM_SMC2_CONSOLE
cp->cp_brgc2 =
#else
cp->cp_brgc1 =
#endif
((ui - 1) < 4096)
? (((ui - 1) << 1) | CPM_BRG_EN)
: ((((ui / 16) - 1) << 1) | CPM_BRG_EN | CPM_BRG_DIV16);
#else /* CONFIG_MBX */
if (*MBX_CSR1 & CSR1_COMEN) {
/* COM1 is enabled. Initialize SMC1 and use it for
* the console port.
*/
/* Enable SDMA.
*/
((immap_t *)IMAP_ADDR)->im_siu_conf.sc_sdcr = 1;
/* Use Port B for SMCs instead of other functions.
*/
cp->cp_pbpar |= 0x00000cc0;
cp->cp_pbdir &= ~0x00000cc0;
cp->cp_pbodr &= ~0x00000cc0;
/* Allocate space for two buffer descriptors in the DP ram.
* For now, this address seems OK, but it may have to
* change with newer versions of the firmware.
*/
dpaddr = 0x0800;
/* Grab a few bytes from the top of memory. EPPC-Bug isn't
* running any more, so we can do this.
*/
memaddr = (bd->bi_memsize - 32) & ~15;
/* Set the physical address of the host memory buffers in
* the buffer descriptors.
*/
rbdf = (cbd_t *)&cp->cp_dpmem[dpaddr];
rbdf->cbd_bufaddr = memaddr;
rbdf->cbd_sc = 0;
tbdf = rbdf + 1;
tbdf->cbd_bufaddr = memaddr+4;
tbdf->cbd_sc = 0;
/* Set up the uart parameters in the parameter ram.
*/
up->smc_rbase = dpaddr;
up->smc_tbase = dpaddr+sizeof(cbd_t);
up->smc_rfcr = SMC_EB;
up->smc_tfcr = SMC_EB;
/* Set UART mode, 8 bit, no parity, one stop.
* Enable receive and transmit.
*/
sp->smc_smcmr = smcr_mk_clen(9) | SMCMR_SM_UART;
/* Mask all interrupts and remove anything pending.
*/
sp->smc_smcm = 0;
sp->smc_smce = 0xff;
/* Set up the baud rate generator.
* See 8xx_io/commproc.c for details.
*/
cp->cp_simode = 0x10000000;
cp->cp_brgc1 =
(((bd->bi_intfreq/16) / 9600) << 1) | CPM_BRG_EN;
/* Enable SMC1 for console output.
*/
*MBX_CSR1 &= ~CSR1_COMEN;
}
else {
#endif /* ndef CONFIG_MBX */
/* SMCx is used as console port.
*/
tbdf = (cbd_t *)&cp->cp_dpmem[up->smc_tbase];
rbdf = (cbd_t *)&cp->cp_dpmem[up->smc_rbase];
/* Issue a stop transmit, and wait for it.
*/
cp->cp_cpcr = mk_cr_cmd(CPM_CR_CH_CONS,
CPM_CR_STOP_TX) | CPM_CR_FLG;
while (cp->cp_cpcr & CPM_CR_FLG);
}
/* Make the first buffer the only buffer.
*/
tbdf->cbd_sc |= BD_SC_WRAP;
rbdf->cbd_sc |= BD_SC_EMPTY | BD_SC_WRAP;
/* Single character receive.
*/
up->smc_mrblr = 1;
up->smc_maxidl = 0;
/* Initialize Tx/Rx parameters.
*/
cp->cp_cpcr = mk_cr_cmd(CPM_CR_CH_CONS, CPM_CR_INIT_TRX) | CPM_CR_FLG;
while (cp->cp_cpcr & CPM_CR_FLG);
/* Enable transmitter/receiver.
*/
sp->smc_smcmr |= SMCMR_REN | SMCMR_TEN;
/* This is ignored.
*/
return 0;
}
void
serial_putc(void *ignored, const char c)
{
volatile cbd_t *tbdf;
volatile char *buf;
volatile smc_uart_t *up;
up = (smc_uart_t *)&cpmp->cp_dparam[PROFF_CONS];
tbdf = (cbd_t *)&cpmp->cp_dpmem[up->smc_tbase];
/* Wait for last character to go.
*/
buf = (char *)tbdf->cbd_bufaddr;
while (tbdf->cbd_sc & BD_SC_READY);
*buf = c;
tbdf->cbd_datlen = 1;
tbdf->cbd_sc |= BD_SC_READY;
}
char
serial_getc(void *ignored)
{
volatile cbd_t *rbdf;
volatile char *buf;
volatile smc_uart_t *up;
char c;
up = (smc_uart_t *)&cpmp->cp_dparam[PROFF_CONS];
rbdf = (cbd_t *)&cpmp->cp_dpmem[up->smc_rbase];
/* Wait for character to show up.
*/
buf = (char *)rbdf->cbd_bufaddr;
while (rbdf->cbd_sc & BD_SC_EMPTY);
c = *buf;
rbdf->cbd_sc |= BD_SC_EMPTY;
return(c);
}
int
serial_tstc(void *ignored)
{
volatile cbd_t *rbdf;
volatile smc_uart_t *up;
up = (smc_uart_t *)&cpmp->cp_dparam[PROFF_CONS];
rbdf = (cbd_t *)&cpmp->cp_dpmem[up->smc_rbase];
return(!(rbdf->cbd_sc & BD_SC_EMPTY));
}
void
serial_close(unsigned long com_port)
{
}
static int smc_init (void)
{
volatile immap_t *im = (immap_t *)CFG_IMMR;
volatile smc_t *sp;
volatile smc_uart_t *up;
volatile cbd_t *tbdf, *rbdf;
volatile cpm8xx_t *cp = &(im->im_cpm);
#if (!defined(CONFIG_8xx_CONS_SMC1)) && (defined(CONFIG_MPC823) || defined(CONFIG_MPC850))
volatile iop8xx_t *ip = (iop8xx_t *)&(im->im_ioport);
#endif
uint dpaddr;
/* initialize pointers to SMC */
sp = (smc_t *) &(cp->cp_smc[SMC_INDEX]);
up = (smc_uart_t *) &cp->cp_dparam[PROFF_SMC];
/* Disable transmitter/receiver.
*/
sp->smc_smcmr &= ~(SMCMR_REN | SMCMR_TEN);
/* Enable SDMA.
*/
im->im_siu_conf.sc_sdcr = 1;
/* clear error conditions */
#ifdef CFG_SDSR
im->im_sdma.sdma_sdsr = CFG_SDSR;
#else
im->im_sdma.sdma_sdsr = 0x83;
#endif
/* clear SDMA interrupt mask */
#ifdef CFG_SDMR
im->im_sdma.sdma_sdmr = CFG_SDMR;
#else
im->im_sdma.sdma_sdmr = 0x00;
#endif
#if defined(CONFIG_8xx_CONS_SMC1)
/* Use Port B for SMC1 instead of other functions.
*/
cp->cp_pbpar |= 0x000000c0;
cp->cp_pbdir &= ~0x000000c0;
cp->cp_pbodr &= ~0x000000c0;
#else /* CONFIG_8xx_CONS_SMC2 */
# if defined(CONFIG_MPC823) || defined(CONFIG_MPC850)
/* Use Port A for SMC2 instead of other functions.
*/
ip->iop_papar |= 0x00c0;
ip->iop_padir &= ~0x00c0;
ip->iop_paodr &= ~0x00c0;
# else /* must be a 860 then */
/* Use Port B for SMC2 instead of other functions.
*/
cp->cp_pbpar |= 0x00000c00;
cp->cp_pbdir &= ~0x00000c00;
cp->cp_pbodr &= ~0x00000c00;
# endif
#endif
#if defined(CONFIG_FADS) || defined(CONFIG_ADS)
/* Enable RS232 */
#if defined(CONFIG_8xx_CONS_SMC1)
*((uint *) BCSR1) &= ~BCSR1_RS232EN_1;
#else
*((uint *) BCSR1) &= ~BCSR1_RS232EN_2;
#endif
#endif /* CONFIG_FADS */
#if defined(CONFIG_RPXLITE) || defined(CONFIG_RPXCLASSIC)
/* Enable Monitor Port Transceiver */
*((uchar *) BCSR0) |= BCSR0_ENMONXCVR ;
#endif /* CONFIG_RPXLITE */
/* Set the physical address of the host memory buffers in
* the buffer descriptors.
*/
#ifdef CFG_ALLOC_DPRAM
dpaddr = dpram_alloc_align (sizeof(cbd_t)*2 + 2, 8) ;
#else
dpaddr = CPM_SERIAL_BASE ;
#endif
/* Allocate space for two buffer descriptors in the DP ram.
* For now, this address seems OK, but it may have to
* change with newer versions of the firmware.
* damm: allocating space after the two buffers for rx/tx data
*/
rbdf = (cbd_t *)&cp->cp_dpmem[dpaddr];
rbdf->cbd_bufaddr = (uint) (rbdf+2);
rbdf->cbd_sc = 0;
tbdf = rbdf + 1;
tbdf->cbd_bufaddr = ((uint) (rbdf+2)) + 1;
tbdf->cbd_sc = 0;
/* Set up the uart parameters in the parameter ram.
*/
up->smc_rbase = dpaddr;
up->smc_tbase = dpaddr+sizeof(cbd_t);
up->smc_rfcr = SMC_EB;
up->smc_tfcr = SMC_EB;
#if defined(CONFIG_MBX)
board_serial_init();
#endif /* CONFIG_MBX */
/* Set UART mode, 8 bit, no parity, one stop.
* Enable receive and transmit.
*/
sp->smc_smcmr = smcr_mk_clen(9) | SMCMR_SM_UART;
/* Mask all interrupts and remove anything pending.
*/
sp->smc_smcm = 0;
sp->smc_smce = 0xff;
/* Set up the baud rate generator.
*/
smc_setbrg ();
/* Make the first buffer the only buffer.
*/
tbdf->cbd_sc |= BD_SC_WRAP;
rbdf->cbd_sc |= BD_SC_EMPTY | BD_SC_WRAP;
/* Single character receive.
*/
up->smc_mrblr = 1;
up->smc_maxidl = 0;
/* Initialize Tx/Rx parameters.
*/
while (cp->cp_cpcr & CPM_CR_FLG) /* wait if cp is busy */
;
cp->cp_cpcr = mk_cr_cmd(CPM_CR_CH_SMC, CPM_CR_INIT_TRX) | CPM_CR_FLG;
while (cp->cp_cpcr & CPM_CR_FLG) /* wait if cp is busy */
;
/* Enable transmitter/receiver.
*/
sp->smc_smcmr |= SMCMR_REN | SMCMR_TEN;
return (0);
}
/* The interrupt handler.
* This is called from the CPM handler, not the MPC core interrupt.
*/
static int scc_enet_interrupt(rtdm_irq_t *irq_handle)
{
struct rtnet_device *rtdev = rtdm_irq_get_arg(irq_handle, struct rtnet_device);
int packets = 0;
struct scc_enet_private *cep;
volatile cbd_t *bdp;
ushort int_events;
int must_restart;
nanosecs_abs_t time_stamp = rtdm_clock_read();
cep = (struct scc_enet_private *)rtdev->priv;
/* Get the interrupt events that caused us to be here.
*/
int_events = cep->sccp->scc_scce;
cep->sccp->scc_scce = int_events;
must_restart = 0;
/* Handle receive event in its own function.
*/
if (int_events & SCCE_ENET_RXF) {
scc_enet_rx(rtdev, &packets, &time_stamp);
}
/* Check for a transmit error. The manual is a little unclear
* about this, so the debug code until I get it figured out. It
* appears that if TXE is set, then TXB is not set. However,
* if carrier sense is lost during frame transmission, the TXE
* bit is set, "and continues the buffer transmission normally."
* I don't know if "normally" implies TXB is set when the buffer
* descriptor is closed.....trial and error :-).
*/
/* Transmit OK, or non-fatal error. Update the buffer descriptors.
*/
if (int_events & (SCCE_ENET_TXE | SCCE_ENET_TXB)) {
rtdm_lock_get(&cep->lock);
bdp = cep->dirty_tx;
while ((bdp->cbd_sc&BD_ENET_TX_READY)==0) {
RT_DEBUG(__FUNCTION__": Tx ok\n");
if ((bdp==cep->cur_tx) && (cep->tx_full == 0))
break;
if (bdp->cbd_sc & BD_ENET_TX_HB) /* No heartbeat */
cep->stats.tx_heartbeat_errors++;
if (bdp->cbd_sc & BD_ENET_TX_LC) /* Late collision */
cep->stats.tx_window_errors++;
if (bdp->cbd_sc & BD_ENET_TX_RL) /* Retrans limit */
cep->stats.tx_aborted_errors++;
if (bdp->cbd_sc & BD_ENET_TX_UN) /* Underrun */
cep->stats.tx_fifo_errors++;
if (bdp->cbd_sc & BD_ENET_TX_CSL) /* Carrier lost */
cep->stats.tx_carrier_errors++;
/* No heartbeat or Lost carrier are not really bad errors.
* The others require a restart transmit command.
*/
if (bdp->cbd_sc &
(BD_ENET_TX_LC | BD_ENET_TX_RL | BD_ENET_TX_UN)) {
must_restart = 1;
cep->stats.tx_errors++;
}
cep->stats.tx_packets++;
/* Deferred means some collisions occurred during transmit,
* but we eventually sent the packet OK.
*/
if (bdp->cbd_sc & BD_ENET_TX_DEF)
cep->stats.collisions++;
/* Free the sk buffer associated with this last transmit.
*/
dev_kfree_rtskb(cep->tx_skbuff[cep->skb_dirty]);
cep->skb_dirty = (cep->skb_dirty + 1) & TX_RING_MOD_MASK;
/* Update pointer to next buffer descriptor to be transmitted.
*/
if (bdp->cbd_sc & BD_ENET_TX_WRAP)
bdp = cep->tx_bd_base;
else
bdp++;
/* I don't know if we can be held off from processing these
* interrupts for more than one frame time. I really hope
* not. In such a case, we would now want to check the
* currently available BD (cur_tx) and determine if any
* buffers between the dirty_tx and cur_tx have also been
* sent. We would want to process anything in between that
* does not have BD_ENET_TX_READY set.
*/
/* Since we have freed up a buffer, the ring is no longer
* full.
*/
if (cep->tx_full) {
cep->tx_full = 0;
if (rtnetif_queue_stopped(rtdev))
rtnetif_wake_queue(rtdev);
}
cep->dirty_tx = (cbd_t *)bdp;
}
if (must_restart) {
volatile cpm8xx_t *cp;
/* Some transmit errors cause the transmitter to shut
* down. We now issue a restart transmit. Since the
* errors close the BD and update the pointers, the restart
* _should_ pick up without having to reset any of our
* pointers either.
*/
cp = cpmp;
cp->cp_cpcr =
mk_cr_cmd(CPM_CR_ENET, CPM_CR_RESTART_TX) | CPM_CR_FLG;
while (cp->cp_cpcr & CPM_CR_FLG);
}
rtdm_lock_put(&cep->lock);
}
/* Check for receive busy, i.e. packets coming but no place to
* put them. This "can't happen" because the receive interrupt
* is tossing previous frames.
*/
if (int_events & SCCE_ENET_BSY) {
cep->stats.rx_dropped++;
rtdm_printk("CPM ENET: BSY can't happen.\n");
}
if (packets > 0)
rt_mark_stack_mgr(rtdev);
return RTDM_IRQ_HANDLED;
}
static int serial_mpc8xx_probe(struct udevice *dev)
{
immap_t __iomem *im = (immap_t __iomem *)CONFIG_SYS_IMMR;
smc_t __iomem *sp;
smc_uart_t __iomem *up;
cpm8xx_t __iomem *cp = &(im->im_cpm);
struct serialbuffer __iomem *rtx;
/* initialize pointers to SMC */
sp = cp->cp_smc + SMC_INDEX;
up = (smc_uart_t __iomem *)&cp->cp_dparam[PROFF_SMC];
/* Disable relocation */
out_be16(&up->smc_rpbase, 0);
/* Disable transmitter/receiver. */
clrbits_be16(&sp->smc_smcmr, SMCMR_REN | SMCMR_TEN);
/* Enable SDMA. */
out_be32(&im->im_siu_conf.sc_sdcr, 1);
/* clear error conditions */
out_8(&im->im_sdma.sdma_sdsr, CONFIG_SYS_SDSR);
/* clear SDMA interrupt mask */
out_8(&im->im_sdma.sdma_sdmr, CONFIG_SYS_SDMR);
/* Use Port B for SMCx instead of other functions. */
setbits_be32(&cp->cp_pbpar, IOPINS);
clrbits_be32(&cp->cp_pbdir, IOPINS);
clrbits_be16(&cp->cp_pbodr, IOPINS);
/* Set the physical address of the host memory buffers in
* the buffer descriptors.
*/
rtx = (struct serialbuffer __iomem *)&cp->cp_dpmem[CPM_SERIAL_BASE];
/* Allocate space for two buffer descriptors in the DP ram.
* For now, this address seems OK, but it may have to
* change with newer versions of the firmware.
* damm: allocating space after the two buffers for rx/tx data
*/
out_be32(&rtx->rxbd.cbd_bufaddr, (__force uint)&rtx->rxbuf);
out_be16(&rtx->rxbd.cbd_sc, 0);
out_be32(&rtx->txbd.cbd_bufaddr, (__force uint)&rtx->txbuf);
out_be16(&rtx->txbd.cbd_sc, 0);
/* Set up the uart parameters in the parameter ram. */
out_be16(&up->smc_rbase, CPM_SERIAL_BASE);
out_be16(&up->smc_tbase, CPM_SERIAL_BASE + sizeof(cbd_t));
out_8(&up->smc_rfcr, SMC_EB);
out_8(&up->smc_tfcr, SMC_EB);
/* Set UART mode, 8 bit, no parity, one stop.
* Enable receive and transmit.
*/
out_be16(&sp->smc_smcmr, smcr_mk_clen(9) | SMCMR_SM_UART);
/* Mask all interrupts and remove anything pending.
*/
out_8(&sp->smc_smcm, 0);
out_8(&sp->smc_smce, 0xff);
/* Set up the baud rate generator */
serial_mpc8xx_setbrg(dev, gd->baudrate);
/* Make the first buffer the only buffer. */
setbits_be16(&rtx->txbd.cbd_sc, BD_SC_WRAP);
setbits_be16(&rtx->rxbd.cbd_sc, BD_SC_EMPTY | BD_SC_WRAP);
/* single/multi character receive. */
out_be16(&up->smc_mrblr, CONFIG_SYS_SMC_RXBUFLEN);
out_be16(&up->smc_maxidl, CONFIG_SYS_MAXIDLE);
out_be32(&rtx->rxindex, 0);
/* Initialize Tx/Rx parameters. */
while (in_be16(&cp->cp_cpcr) & CPM_CR_FLG) /* wait if cp is busy */
;
out_be16(&cp->cp_cpcr,
mk_cr_cmd(CPM_CR_CH_SMC, CPM_CR_INIT_TRX) | CPM_CR_FLG);
while (in_be16(&cp->cp_cpcr) & CPM_CR_FLG) /* wait if cp is busy */
;
/* Enable transmitter/receiver. */
setbits_be16(&sp->smc_smcmr, SMCMR_REN | SMCMR_TEN);
return 0;
}
static void set_multicast_list(struct net_device *dev)
{
struct scc_enet_private *cep;
struct dev_mc_list *dmi;
u_char *mcptr, *tdptr;
volatile scc_enet_t *ep;
int i, j;
cep = (struct scc_enet_private *)dev->priv;
/* Get pointer to SCC area in parameter RAM.
*/
ep = (scc_enet_t *)dev->base_addr;
if (dev->flags&IFF_PROMISC) {
/* Log any net taps. */
printk("%s: Promiscuous mode enabled.\n", dev->name);
cep->sccp->scc_pmsr |= SCC_PMSR_PRO;
} else {
cep->sccp->scc_pmsr &= ~SCC_PMSR_PRO;
if (dev->flags & IFF_ALLMULTI) {
/* Catch all multicast addresses, so set the
* filter to all 1's.
*/
ep->sen_gaddr1 = 0xffff;
ep->sen_gaddr2 = 0xffff;
ep->sen_gaddr3 = 0xffff;
ep->sen_gaddr4 = 0xffff;
}
else {
/* Clear filter and add the addresses in the list.
*/
ep->sen_gaddr1 = 0;
ep->sen_gaddr2 = 0;
ep->sen_gaddr3 = 0;
ep->sen_gaddr4 = 0;
dmi = dev->mc_list;
for (i=0; i<dev->mc_count; i++) {
/* Only support group multicast for now.
*/
if (!(dmi->dmi_addr[0] & 1))
continue;
/* The address in dmi_addr is LSB first,
* and taddr is MSB first. We have to
* copy bytes MSB first from dmi_addr.
*/
mcptr = (u_char *)dmi->dmi_addr + 5;
tdptr = (u_char *)&ep->sen_taddrh;
for (j=0; j<6; j++)
*tdptr++ = *mcptr--;
/* Ask CPM to run CRC and set bit in
* filter mask.
*/
cpmp->cp_cpcr = mk_cr_cmd(CPM_CR_ENET, CPM_CR_SET_GADDR) | CPM_CR_FLG;
/* this delay is necessary here -- Cort */
udelay(10);
while (cpmp->cp_cpcr & CPM_CR_FLG);
}
}
}
}
static void scc_init (int scc_index)
{
static int cpm_cr_ch[] = {
CPM_CR_CH_SCC1,
CPM_CR_CH_SCC2,
CPM_CR_CH_SCC3,
CPM_CR_CH_SCC4,
};
volatile immap_t *im = (immap_t *) CONFIG_SYS_IMMR;
volatile scc_t *sp;
volatile scc_uart_t *up;
volatile cbd_t *tbdf, *rbdf;
volatile cpm8xx_t *cp = &(im->im_cpm);
uint dpaddr;
/* initialize pointers to SCC */
sp = (scc_t *) & (cp->cp_scc[scc_index]);
up = (scc_uart_t *) & cp->cp_dparam[proff_scc[scc_index]];
/* Disable transmitter/receiver.
*/
sp->scc_gsmrl &= ~(SCC_GSMRL_ENR | SCC_GSMRL_ENT);
/* Allocate space for two buffer descriptors in the DP ram.
*/
#ifdef CONFIG_SYS_ALLOC_DPRAM
dpaddr = dpram_alloc_align (sizeof (cbd_t) * 2 + 2, 8);
#else
dpaddr = CPM_POST_BASE;
#endif
/* Enable SDMA.
*/
im->im_siu_conf.sc_sdcr = 0x0001;
/* Set the physical address of the host memory buffers in
* the buffer descriptors.
*/
rbdf = (cbd_t *) & cp->cp_dpmem[dpaddr];
rbdf->cbd_bufaddr = (uint) (rbdf + 2);
rbdf->cbd_sc = 0;
tbdf = rbdf + 1;
tbdf->cbd_bufaddr = ((uint) (rbdf + 2)) + 1;
tbdf->cbd_sc = 0;
/* Set up the baud rate generator.
*/
cp->cp_sicr &= ~(0x000000FF << (8 * scc_index));
/* no |= needed, since BRG1 is 000 */
cp->cp_brgc1 =
(((gd->cpu_clk / 16 / gd->baudrate) -
1) << 1) | CPM_BRG_EN;
/* Set up the uart parameters in the parameter ram.
*/
up->scc_genscc.scc_rbase = dpaddr;
up->scc_genscc.scc_tbase = dpaddr + sizeof (cbd_t);
/* Initialize Tx/Rx parameters.
*/
while (cp->cp_cpcr & CPM_CR_FLG) /* wait if cp is busy */
;
cp->cp_cpcr =
mk_cr_cmd (cpm_cr_ch[scc_index], CPM_CR_INIT_TRX) | CPM_CR_FLG;
while (cp->cp_cpcr & CPM_CR_FLG) /* wait if cp is busy */
;
up->scc_genscc.scc_rfcr = SCC_EB | 0x05;
up->scc_genscc.scc_tfcr = SCC_EB | 0x05;
up->scc_genscc.scc_mrblr = 1; /* Single character receive */
up->scc_maxidl = 0; /* disable max idle */
up->scc_brkcr = 1; /* send one break character on stop TX */
up->scc_parec = 0;
up->scc_frmec = 0;
up->scc_nosec = 0;
up->scc_brkec = 0;
up->scc_uaddr1 = 0;
up->scc_uaddr2 = 0;
up->scc_toseq = 0;
up->scc_char1 = 0x8000;
up->scc_char2 = 0x8000;
up->scc_char3 = 0x8000;
up->scc_char4 = 0x8000;
up->scc_char5 = 0x8000;
up->scc_char6 = 0x8000;
up->scc_char7 = 0x8000;
up->scc_char8 = 0x8000;
up->scc_rccm = 0xc0ff;
/* Set low latency / small fifo.
*/
sp->scc_gsmrh = SCC_GSMRH_RFW;
/* Set UART mode
*/
sp->scc_gsmrl &= ~0xF;
sp->scc_gsmrl |= SCC_GSMRL_MODE_UART;
/* Set local loopback mode.
*/
sp->scc_gsmrl &= ~SCC_GSMRL_DIAG_LE;
sp->scc_gsmrl |= SCC_GSMRL_DIAG_LOOP;
/* Set clock divider 16 on Tx and Rx
*/
sp->scc_gsmrl |= (SCC_GSMRL_TDCR_16 | SCC_GSMRL_RDCR_16);
sp->scc_psmr |= SCU_PSMR_CL;
/* Mask all interrupts and remove anything pending.
*/
sp->scc_sccm = 0;
sp->scc_scce = 0xffff;
sp->scc_dsr = 0x7e7e;
sp->scc_psmr = 0x3000;
/* Make the first buffer the only buffer.
*/
tbdf->cbd_sc |= BD_SC_WRAP;
rbdf->cbd_sc |= BD_SC_EMPTY | BD_SC_WRAP;
/* Enable transmitter/receiver.
*/
sp->scc_gsmrl |= (SCC_GSMRL_ENR | SCC_GSMRL_ENT);
}
void
serial_init(bd_t *bd)
{
volatile smc_t *sp;
volatile smc_uart_t *up;
volatile cbd_t *tbdf, *rbdf;
volatile cpm8xx_t *cp;
uint dpaddr, memaddr;
cp = cpmp;
sp = (smc_t*)&(cp->cp_smc[0]);
up = (smc_uart_t *)&cp->cp_dparam[PROFF_SMC1];
/* Disable transmitter/receiver.
*/
sp->smc_smcmr &= ~(SMCMR_REN | SMCMR_TEN);
#ifdef CONFIG_MBX
if (*MBX_CSR1 & CSR1_COMEN) {
/* COM1 is enabled. Initialize SMC1 and use it for
* the console port.
*/
/* Enable SDMA.
*/
((immap_t *)IMAP_ADDR)->im_siu_conf.sc_sdcr = 1;
/* Use Port B for SMCs instead of other functions.
*/
cp->cp_pbpar |= 0x00000cc0;
cp->cp_pbdir &= ~0x00000cc0;
cp->cp_pbodr &= ~0x00000cc0;
/* Allocate space for two buffer descriptors in the DP ram.
* For now, this address seems OK, but it may have to
* change with newer versions of the firmware.
*/
dpaddr = 0x0800;
/* Grab a few bytes from the top of memory. EPPC-Bug isn't
* running any more, so we can do this.
*/
memaddr = (bd->bi_memsize - 32) & ~15;
/* Set the physical address of the host memory buffers in
* the buffer descriptors.
*/
rbdf = (cbd_t *)&cp->cp_dpmem[dpaddr];
rbdf->cbd_bufaddr = memaddr;
rbdf->cbd_sc = 0;
tbdf = rbdf + 1;
tbdf->cbd_bufaddr = memaddr+4;
tbdf->cbd_sc = 0;
/* Set up the uart parameters in the parameter ram.
*/
up->smc_rbase = dpaddr;
up->smc_tbase = dpaddr+sizeof(cbd_t);
up->smc_rfcr = SMC_EB;
up->smc_tfcr = SMC_EB;
/* Set UART mode, 8 bit, no parity, one stop.
* Enable receive and transmit.
*/
sp->smc_smcmr = smcr_mk_clen(9) | SMCMR_SM_UART;
/* Mask all interrupts and remove anything pending.
*/
sp->smc_smcm = 0;
sp->smc_smce = 0xff;
/* Set up the baud rate generator.
* See 8xx_io/commproc.c for details.
*/
cp->cp_simode = 0x10000000;
cp->cp_brgc1 =
((((bd->bi_intfreq * 1000000)/16) / 9600) << 1) | CPM_BRG_EN;
/* Enable SMC1 for console output.
*/
*MBX_CSR1 &= ~CSR1_COMEN;
}
else {
#endif
/* SMC1 is used as console port.
*/
tbdf = (cbd_t *)&cp->cp_dpmem[up->smc_tbase];
rbdf = (cbd_t *)&cp->cp_dpmem[up->smc_rbase];
/* Issue a stop transmit, and wait for it.
*/
cp->cp_cpcr = mk_cr_cmd(CPM_CR_CH_SMC1,
CPM_CR_STOP_TX) | CPM_CR_FLG;
while (cp->cp_cpcr & CPM_CR_FLG);
#ifdef CONFIG_MBX
}
#endif
/* Make the first buffer the only buffer.
*/
tbdf->cbd_sc |= BD_SC_WRAP;
rbdf->cbd_sc |= BD_SC_EMPTY | BD_SC_WRAP;
/* Single character receive.
*/
up->smc_mrblr = 1;
up->smc_maxidl = 0;
/* Initialize Tx/Rx parameters.
*/
cp->cp_cpcr = mk_cr_cmd(CPM_CR_CH_SMC1, CPM_CR_INIT_TRX) | CPM_CR_FLG;
while (cp->cp_cpcr & CPM_CR_FLG);
/* Enable transmitter/receiver.
*/
sp->smc_smcmr |= SMCMR_REN | SMCMR_TEN;
}
static void smc_init (int smc_index)
{
static int cpm_cr_ch[] = { CPM_CR_CH_SMC1, CPM_CR_CH_SMC2 };
volatile immap_t *im = (immap_t *) CONFIG_SYS_IMMR;
volatile smc_t *sp;
volatile smc_uart_t *up;
volatile cbd_t *tbdf, *rbdf;
volatile cpm8xx_t *cp = &(im->im_cpm);
uint dpaddr;
/* initialize pointers to SMC */
sp = (smc_t *) & (cp->cp_smc[smc_index]);
up = (smc_uart_t *) & cp->cp_dparam[proff_smc[smc_index]];
/* Disable transmitter/receiver.
*/
sp->smc_smcmr &= ~(SMCMR_REN | SMCMR_TEN);
/* Enable SDMA.
*/
im->im_siu_conf.sc_sdcr = 1;
/* clear error conditions */
#ifdef CONFIG_SYS_SDSR
im->im_sdma.sdma_sdsr = CONFIG_SYS_SDSR;
#else
im->im_sdma.sdma_sdsr = 0x83;
#endif
/* clear SDMA interrupt mask */
#ifdef CONFIG_SYS_SDMR
im->im_sdma.sdma_sdmr = CONFIG_SYS_SDMR;
#else
im->im_sdma.sdma_sdmr = 0x00;
#endif
#if defined(CONFIG_FADS)
/* Enable RS232 */
*((uint *) BCSR1) &=
~(smc_index == 1 ? BCSR1_RS232EN_1 : BCSR1_RS232EN_2);
#endif
#if defined(CONFIG_RPXLITE) || defined(CONFIG_RPXCLASSIC)
/* Enable Monitor Port Transceiver */
*((uchar *) BCSR0) |= BCSR0_ENMONXCVR;
#endif
/* Set the physical address of the host memory buffers in
* the buffer descriptors.
*/
#ifdef CONFIG_SYS_ALLOC_DPRAM
dpaddr = dpram_alloc_align (sizeof (cbd_t) * 2 + 2, 8);
#else
dpaddr = CPM_POST_BASE;
#endif
/* Allocate space for two buffer descriptors in the DP ram.
* For now, this address seems OK, but it may have to
* change with newer versions of the firmware.
* damm: allocating space after the two buffers for rx/tx data
*/
rbdf = (cbd_t *) & cp->cp_dpmem[dpaddr];
rbdf->cbd_bufaddr = (uint) (rbdf + 2);
rbdf->cbd_sc = 0;
tbdf = rbdf + 1;
tbdf->cbd_bufaddr = ((uint) (rbdf + 2)) + 1;
tbdf->cbd_sc = 0;
/* Set up the uart parameters in the parameter ram.
*/
up->smc_rbase = dpaddr;
up->smc_tbase = dpaddr + sizeof (cbd_t);
up->smc_rfcr = SMC_EB;
up->smc_tfcr = SMC_EB;
#if defined(CONFIG_MBX)
board_serial_init ();
#endif
/* Set UART mode, 8 bit, no parity, one stop.
* Enable receive and transmit.
* Set local loopback mode.
*/
sp->smc_smcmr = smcr_mk_clen (9) | SMCMR_SM_UART | (ushort) 0x0004;
/* Mask all interrupts and remove anything pending.
*/
sp->smc_smcm = 0;
sp->smc_smce = 0xff;
/* Set up the baud rate generator.
*/
cp->cp_simode = 0x00000000;
cp->cp_brgc1 =
(((gd->cpu_clk / 16 / gd->baudrate) -
1) << 1) | CPM_BRG_EN;
/* Make the first buffer the only buffer.
*/
tbdf->cbd_sc |= BD_SC_WRAP;
rbdf->cbd_sc |= BD_SC_EMPTY | BD_SC_WRAP;
/* Single character receive.
*/
up->smc_mrblr = 1;
up->smc_maxidl = 0;
/* Initialize Tx/Rx parameters.
*/
while (cp->cp_cpcr & CPM_CR_FLG) /* wait if cp is busy */
;
cp->cp_cpcr =
mk_cr_cmd (cpm_cr_ch[smc_index], CPM_CR_INIT_TRX) | CPM_CR_FLG;
while (cp->cp_cpcr & CPM_CR_FLG) /* wait if cp is busy */
;
/* Enable transmitter/receiver.
*/
sp->smc_smcmr |= SMCMR_REN | SMCMR_TEN;
}
static int mpc8260_smc_serial_init(void)
{
volatile immap_t *im = (immap_t *)CONFIG_SYS_IMMR;
volatile smc_t *sp;
volatile smc_uart_t *up;
volatile cpm8260_t *cp = &(im->im_cpm);
uint dpaddr;
volatile serialbuffer_t *rtx;
/* initialize pointers to SMC */
sp = (smc_t *) &(im->im_smc[SMC_INDEX]);
*(ushort *)(&im->im_dprambase[PROFF_SMC_BASE]) = PROFF_SMC;
up = (smc_uart_t *)&im->im_dprambase[PROFF_SMC];
/* Disable transmitter/receiver. */
sp->smc_smcmr &= ~(SMCMR_REN | SMCMR_TEN);
/* NOTE: I/O port pins are set up via the iop_conf_tab[] table */
/* Allocate space for two buffer descriptors in the DP ram.
* damm: allocating space after the two buffers for rx/tx data
*/
/* allocate size of struct serialbuffer with bd rx/tx,
* buffer rx/tx and rx index
*/
dpaddr = m8260_cpm_dpalloc((sizeof(serialbuffer_t)), 16);
rtx = (serialbuffer_t *)&im->im_dprambase[dpaddr];
/* Set the physical address of the host memory buffers in
* the buffer descriptors.
*/
rtx->rxbd.cbd_bufaddr = (uint) &rtx->rxbuf;
rtx->rxbd.cbd_sc = 0;
rtx->txbd.cbd_bufaddr = (uint) &rtx->txbuf;
rtx->txbd.cbd_sc = 0;
/* Set up the uart parameters in the parameter ram. */
up->smc_rbase = dpaddr;
up->smc_tbase = dpaddr+sizeof(cbd_t);
up->smc_rfcr = CPMFCR_EB;
up->smc_tfcr = CPMFCR_EB;
up->smc_brklen = 0;
up->smc_brkec = 0;
up->smc_brkcr = 0;
/* Set UART mode, 8 bit, no parity, one stop.
* Enable receive and transmit.
*/
sp->smc_smcmr = smcr_mk_clen(9) | SMCMR_SM_UART;
/* Mask all interrupts and remove anything pending. */
sp->smc_smcm = 0;
sp->smc_smce = 0xff;
/* put the SMC channel into NMSI (non multiplexd serial interface)
* mode and wire either BRG7 to SMC1 or BRG8 to SMC2 (15-17).
*/
im->im_cpmux.cmx_smr = (im->im_cpmux.cmx_smr&~CMXSMR_MASK)|CMXSMR_VALUE;
/* Set up the baud rate generator. */
serial_setbrg ();
/* Make the first buffer the only buffer. */
rtx->txbd.cbd_sc |= BD_SC_WRAP;
rtx->rxbd.cbd_sc |= BD_SC_EMPTY | BD_SC_WRAP;
/* single/multi character receive. */
up->smc_mrblr = CONFIG_SYS_SMC_RXBUFLEN;
up->smc_maxidl = CONFIG_SYS_MAXIDLE;
rtx->rxindex = 0;
/* Initialize Tx/Rx parameters. */
while (cp->cp_cpcr & CPM_CR_FLG) /* wait if cp is busy */
;
cp->cp_cpcr = mk_cr_cmd(CPM_CR_SMC_PAGE, CPM_CR_SMC_SBLOCK,
0, CPM_CR_INIT_TRX) | CPM_CR_FLG;
while (cp->cp_cpcr & CPM_CR_FLG) /* wait if cp is busy */
;
/* Enable transmitter/receiver. */
sp->smc_smcmr |= SMCMR_REN | SMCMR_TEN;
return (0);
}
static int scc_init (void)
{
volatile immap_t *im = (immap_t *)CFG_IMMR;
volatile scc_t *sp;
volatile scc_uart_t *up;
volatile cbd_t *tbdf, *rbdf;
volatile cpm8xx_t *cp = &(im->im_cpm);
uint dpaddr;
#if (SCC_INDEX != 2) || !defined(CONFIG_MPC850)
volatile iop8xx_t *ip = (iop8xx_t *)&(im->im_ioport);
#endif
/* initialize pointers to SCC */
sp = (scc_t *) &(cp->cp_scc[SCC_INDEX]);
up = (scc_uart_t *) &cp->cp_dparam[PROFF_SCC];
#if defined(CONFIG_LWMON) && defined(CONFIG_8xx_CONS_SCC2)
{ /* Disable Ethernet, enable Serial */
uchar c;
c = pic_read (0x61);
c &= ~0x40; /* enable COM3 */
c |= 0x80; /* disable Ethernet */
pic_write (0x61, c);
/* enable RTS2 */
cp->cp_pbpar |= 0x2000;
cp->cp_pbdat |= 0x2000;
cp->cp_pbdir |= 0x2000;
}
#endif /* CONFIG_LWMON */
/* Disable transmitter/receiver.
*/
sp->scc_gsmrl &= ~(SCC_GSMRL_ENR | SCC_GSMRL_ENT);
#if (SCC_INDEX == 2) && defined(CONFIG_MPC850)
/*
* The MPC850 has SCC3 on Port B
*/
cp->cp_pbpar |= 0x06;
cp->cp_pbdir &= ~0x06;
cp->cp_pbodr &= ~0x06;
#elif (SCC_INDEX < 2) || !defined(CONFIG_IP860)
/*
* Standard configuration for SCC's is on Part A
*/
ip->iop_papar |= ((3 << (2 * SCC_INDEX)));
ip->iop_padir &= ~((3 << (2 * SCC_INDEX)));
ip->iop_paodr &= ~((3 << (2 * SCC_INDEX)));
#else
/*
* The IP860 has SCC3 and SCC4 on Port D
*/
ip->iop_pdpar |= ((3 << (2 * SCC_INDEX)));
#endif
/* Allocate space for two buffer descriptors in the DP ram.
*/
#ifdef CFG_ALLOC_DPRAM
dpaddr = dpram_alloc_align (sizeof(cbd_t)*2 + 2, 8) ;
#else
dpaddr = CPM_SERIAL2_BASE ;
#endif
/* Enable SDMA.
*/
im->im_siu_conf.sc_sdcr = 0x0001;
/* Set the physical address of the host memory buffers in
* the buffer descriptors.
*/
rbdf = (cbd_t *)&cp->cp_dpmem[dpaddr];
rbdf->cbd_bufaddr = (uint) (rbdf+2);
rbdf->cbd_sc = 0;
tbdf = rbdf + 1;
tbdf->cbd_bufaddr = ((uint) (rbdf+2)) + 1;
tbdf->cbd_sc = 0;
/* Set up the baud rate generator.
*/
scc_setbrg ();
/* Set up the uart parameters in the parameter ram.
*/
up->scc_genscc.scc_rbase = dpaddr;
up->scc_genscc.scc_tbase = dpaddr+sizeof(cbd_t);
/* Initialize Tx/Rx parameters.
*/
while (cp->cp_cpcr & CPM_CR_FLG) /* wait if cp is busy */
;
cp->cp_cpcr = mk_cr_cmd(CPM_CR_CH_SCC, CPM_CR_INIT_TRX) | CPM_CR_FLG;
while (cp->cp_cpcr & CPM_CR_FLG) /* wait if cp is busy */
;
up->scc_genscc.scc_rfcr = SCC_EB | 0x05;
up->scc_genscc.scc_tfcr = SCC_EB | 0x05;
up->scc_genscc.scc_mrblr = 1; /* Single character receive */
up->scc_maxidl = 0; /* disable max idle */
up->scc_brkcr = 1; /* send one break character on stop TX */
up->scc_parec = 0;
up->scc_frmec = 0;
up->scc_nosec = 0;
up->scc_brkec = 0;
up->scc_uaddr1 = 0;
up->scc_uaddr2 = 0;
up->scc_toseq = 0;
up->scc_char1 = 0x8000;
up->scc_char2 = 0x8000;
up->scc_char3 = 0x8000;
up->scc_char4 = 0x8000;
up->scc_char5 = 0x8000;
up->scc_char6 = 0x8000;
up->scc_char7 = 0x8000;
up->scc_char8 = 0x8000;
up->scc_rccm = 0xc0ff;
/* Set low latency / small fifo.
*/
sp->scc_gsmrh = SCC_GSMRH_RFW;
/* Set SCC(x) clock mode to 16x
* See 8xx_io/commproc.c for details.
*
* Wire BRG1 to SCCn
*/
/* Set UART mode, clock divider 16 on Tx and Rx
*/
sp->scc_gsmrl &= ~0xF;
sp->scc_gsmrl |=
(SCC_GSMRL_MODE_UART | SCC_GSMRL_TDCR_16 | SCC_GSMRL_RDCR_16);
sp->scc_psmr = 0;
sp->scc_psmr |= SCU_PSMR_CL;
/* Mask all interrupts and remove anything pending.
*/
sp->scc_sccm = 0;
sp->scc_scce = 0xffff;
sp->scc_dsr = 0x7e7e;
sp->scc_psmr = 0x3000;
/* Make the first buffer the only buffer.
*/
tbdf->cbd_sc |= BD_SC_WRAP;
rbdf->cbd_sc |= BD_SC_EMPTY | BD_SC_WRAP;
/* Enable transmitter/receiver.
*/
sp->scc_gsmrl |= (SCC_GSMRL_ENR | SCC_GSMRL_ENT);
return (0);
}
void
idma_start (int sinc, int dinc, int sz, uint sbuf, uint dbuf, int ttype)
{
/* ttype is for M-M, M-P, P-M or P-P: not used for now */
piptr->pi_istate = 0; /* manual says: clear it before every START_IDMA */
piptr->pi_dcmbits.b.b_resv1 = 0;
if (sinc == 1)
piptr->pi_dcmbits.b.b_sinc = 1;
else
piptr->pi_dcmbits.b.b_sinc = 0;
if (dinc == 1)
piptr->pi_dcmbits.b.b_dinc = 1;
else
piptr->pi_dcmbits.b.b_dinc = 0;
piptr->pi_dcmbits.b.b_erm = 0;
piptr->pi_dcmbits.b.b_sd = 0x00; /* M-M */
bdf->ibd_sbuf = sbuf;
bdf->ibd_dbuf = dbuf;
bdf->ibd_bits.b.b_cm = 0;
bdf->ibd_bits.b.b_interrupt = 1;
bdf->ibd_bits.b.b_wrap = 1;
bdf->ibd_bits.b.b_last = 1;
bdf->ibd_bits.b.b_sdn = 0;
bdf->ibd_bits.b.b_ddn = 0;
bdf->ibd_bits.b.b_dgbl = 0;
bdf->ibd_bits.b.b_ddtb = 0;
bdf->ibd_bits.b.b_sgbl = 0;
bdf->ibd_bits.b.b_sdtb = 0;
bdf->ibd_bits.b.b_dbo = 1;
bdf->ibd_bits.b.b_sbo = 1;
bdf->ibd_bits.b.b_valid = 1;
bdf->ibd_datlen = 512;
*dmadonep = 0;
immap->im_sdma.sdma_idmr2 = (uchar) 0xf;
immap->im_cpm.cp_cpcr = mk_cr_cmd (CPM_CR_IDMA2_PAGE,
CPM_CR_IDMA2_SBLOCK, 0x0,
0x9) | 0x00010000;
while (*dmadonep != 1) {
if (ctrlc ()) {
DEBUG ("\nInterrupted waiting for DMA interrupt.\n");
goto done;
}
printf ("Waiting for DMA interrupt (dmadone=%d b_valid = %d)...\n",
dmadone, bdf->ibd_bits.b.b_valid);
udelay (1000000);
}
printf ("DMA complete notification received!\n");
done:
DEBUG ("memcmp(0x%08x, 0x%08x, 512) = %d\n",
sbuf, dbuf, memcmp ((void *) sbuf, (void *) dbuf, 512));
return;
}
void
kgdb_serial_init (void)
{
volatile immap_t *im = (immap_t *)CONFIG_SYS_IMMR;
volatile scc_t *sp;
volatile scc_uart_t *up;
volatile cbd_t *tbdf, *rbdf;
volatile cpm8260_t *cp = &(im->im_cpm);
uint dpaddr, speed = CONFIG_KGDB_BAUDRATE;
char *s, *e;
if ((s = getenv("kgdbrate")) != NULL && *s != '\0') {
ulong rate = simple_strtoul(s, &e, 10);
if (e > s && *e == '\0')
speed = rate;
}
/* initialize pointers to SCC */
sp = (scc_t *) &(im->im_scc[KGDB_SCC_INDEX]);
up = (scc_uart_t *)&im->im_dprambase[KGDB_PROFF_SCC];
/* Disable transmitter/receiver.
*/
sp->scc_gsmrl &= ~(SCC_GSMRL_ENR | SCC_GSMRL_ENT);
/* put the SCC channel into NMSI (non multiplexd serial interface)
* mode and wire the selected SCC Tx and Rx clocks to BRGx (15-15).
*/
im->im_cpmux.cmx_scr = \
(im->im_cpmux.cmx_scr & ~KGDB_CMXSCR_MASK) | KGDB_CMXSCR_VALUE;
/* Set up the baud rate generator.
*/
#if defined(CONFIG_KGDB_USE_EXTC)
m8260_cpm_extcbrg(KGDB_SCC_INDEX, speed,
CONFIG_KGDB_EXTC_RATE, CONFIG_KGDB_EXTC_PINSEL);
#else
m8260_cpm_setbrg(KGDB_SCC_INDEX, speed);
#endif
/* Allocate space for two buffer descriptors in the DP ram.
* damm: allocating space after the two buffers for rx/tx data
*/
dpaddr = m8260_cpm_dpalloc((2 * sizeof (cbd_t)) + 2, 16);
/* Set the physical address of the host memory buffers in
* the buffer descriptors.
*/
rbdf = (cbd_t *)&im->im_dprambase[dpaddr];
rbdf->cbd_bufaddr = (uint) (rbdf+2);
rbdf->cbd_sc = BD_SC_EMPTY | BD_SC_WRAP;
tbdf = rbdf + 1;
tbdf->cbd_bufaddr = ((uint) (rbdf+2)) + 1;
tbdf->cbd_sc = BD_SC_WRAP;
/* Set up the uart parameters in the parameter ram.
*/
up->scc_genscc.scc_rbase = dpaddr;
up->scc_genscc.scc_tbase = dpaddr+sizeof(cbd_t);
up->scc_genscc.scc_rfcr = CPMFCR_EB;
up->scc_genscc.scc_tfcr = CPMFCR_EB;
up->scc_genscc.scc_mrblr = 1;
up->scc_maxidl = 0;
up->scc_brkcr = 1;
up->scc_parec = 0;
up->scc_frmec = 0;
up->scc_nosec = 0;
up->scc_brkec = 0;
up->scc_uaddr1 = 0;
up->scc_uaddr2 = 0;
up->scc_toseq = 0;
up->scc_char1 = up->scc_char2 = up->scc_char3 = up->scc_char4 = 0x8000;
up->scc_char5 = up->scc_char6 = up->scc_char7 = up->scc_char8 = 0x8000;
up->scc_rccm = 0xc0ff;
/* Mask all interrupts and remove anything pending.
*/
sp->scc_sccm = 0;
sp->scc_scce = 0xffff;
/* Set 8 bit FIFO, 16 bit oversampling and UART mode.
*/
sp->scc_gsmrh = SCC_GSMRH_RFW; /* 8 bit FIFO */
sp->scc_gsmrl = \
SCC_GSMRL_TDCR_16 | SCC_GSMRL_RDCR_16 | SCC_GSMRL_MODE_UART;
/* Set CTS flow control, 1 stop bit, 8 bit character length,
* normal async UART mode, no parity
*/
sp->scc_psmr = SCU_PSMR_FLC | SCU_PSMR_CL;
/* execute the "Init Rx and Tx params" CP command.
*/
while (cp->cp_cpcr & CPM_CR_FLG) /* wait if cp is busy */
;
cp->cp_cpcr = mk_cr_cmd(KGDB_CPM_CR_SCC_PAGE, KGDB_CPM_CR_SCC_SBLOCK,
0, CPM_CR_INIT_TRX) | CPM_CR_FLG;
while (cp->cp_cpcr & CPM_CR_FLG) /* wait if cp is busy */
;
/* Enable transmitter/receiver.
*/
sp->scc_gsmrl |= SCC_GSMRL_ENR | SCC_GSMRL_ENT;
printf("SCC%d at %dbps ", CONFIG_KGDB_INDEX, speed);
}
