static int alloc_dma_rcv_ctx(struct ti_ohci *ohci, struct dma_rcv_ctx *d,
enum context_type type, int ctx, int num_desc,
int buf_size, int split_buf_size, int context_base);
-static void stop_dma_rcv_ctx(struct dma_rcv_ctx *d);
static void free_dma_rcv_ctx(struct dma_rcv_ctx *d);
static int alloc_dma_trm_ctx(struct ti_ohci *ohci, struct dma_trm_ctx *d,
initialize_dma_trm_ctx(&ohci->at_req_context);
initialize_dma_trm_ctx(&ohci->at_resp_context);
- /* Initialize IR Legacy DMA channel mask */
- ohci->ir_legacy_channels = 0;
-
/* Accept AR requests from all nodes */
reg_write(ohci, OHCI1394_AsReqFilterHiSet, 0x80000000);
return -EOVERFLOW;
}
- /* Decide whether we have an iso, a request, or a response packet */
if (packet->type == hpsb_raw)
d = &ohci->at_req_context;
- else if ((packet->tcode == TCODE_ISO_DATA) && (packet->type == hpsb_iso)) {
- /* The legacy IT DMA context is initialized on first
- * use. However, the alloc cannot be run from
- * interrupt context, so we bail out if that is the
- * case. I don't see anyone sending ISO packets from
- * interrupt context anyway... */
-
- if (ohci->it_legacy_context.ohci == NULL) {
- if (in_interrupt()) {
- PRINT(KERN_ERR,
- "legacy IT context cannot be initialized during interrupt");
- return -EINVAL;
- }
-
- if (alloc_dma_trm_ctx(ohci, &ohci->it_legacy_context,
- DMA_CTX_ISO, 0, IT_NUM_DESC,
- OHCI1394_IsoXmitContextBase) < 0) {
- PRINT(KERN_ERR,
- "error initializing legacy IT context");
- return -ENOMEM;
- }
-
- initialize_dma_trm_ctx(&ohci->it_legacy_context);
- }
-
- d = &ohci->it_legacy_context;
- } else if ((packet->tcode & 0x02) && (packet->tcode != TCODE_ISO_DATA))
+ else if ((packet->tcode & 0x02) && (packet->tcode != TCODE_ISO_DATA))
d = &ohci->at_resp_context;
else
d = &ohci->at_req_context;
static int ohci_devctl(struct hpsb_host *host, enum devctl_cmd cmd, int arg)
{
struct ti_ohci *ohci = host->hostdata;
- int retval = 0;
- unsigned long flags;
- int phy_reg;
+ int retval = 0, phy_reg;
switch (cmd) {
case RESET_BUS:
dma_trm_reset(&ohci->at_resp_context);
break;
- case ISO_LISTEN_CHANNEL:
- {
- u64 mask;
- struct dma_rcv_ctx *d = &ohci->ir_legacy_context;
- int ir_legacy_active;
-
- if (arg<0 || arg>63) {
- PRINT(KERN_ERR,
- "%s: IS0 listen channel %d is out of range",
- __FUNCTION__, arg);
- return -EFAULT;
- }
-
- mask = (u64)0x1<<arg;
-
- spin_lock_irqsave(&ohci->IR_channel_lock, flags);
-
- if (ohci->ISO_channel_usage & mask) {
- PRINT(KERN_ERR,
- "%s: IS0 listen channel %d is already used",
- __FUNCTION__, arg);
- spin_unlock_irqrestore(&ohci->IR_channel_lock, flags);
- return -EFAULT;
- }
-
- ir_legacy_active = ohci->ir_legacy_channels;
-
- ohci->ISO_channel_usage |= mask;
- ohci->ir_legacy_channels |= mask;
-
- spin_unlock_irqrestore(&ohci->IR_channel_lock, flags);
-
- if (!ir_legacy_active) {
- if (ohci1394_register_iso_tasklet(ohci,
- &ohci->ir_legacy_tasklet) < 0) {
- PRINT(KERN_ERR, "No IR DMA context available");
- return -EBUSY;
- }
-
- /* the IR context can be assigned to any DMA context
- * by ohci1394_register_iso_tasklet */
- d->ctx = ohci->ir_legacy_tasklet.context;
- d->ctrlSet = OHCI1394_IsoRcvContextControlSet +
- 32*d->ctx;
- d->ctrlClear = OHCI1394_IsoRcvContextControlClear +
- 32*d->ctx;
- d->cmdPtr = OHCI1394_IsoRcvCommandPtr + 32*d->ctx;
- d->ctxtMatch = OHCI1394_IsoRcvContextMatch + 32*d->ctx;
-
- initialize_dma_rcv_ctx(&ohci->ir_legacy_context, 1);
-
- if (printk_ratelimit())
- DBGMSG("IR legacy activated");
- }
-
- spin_lock_irqsave(&ohci->IR_channel_lock, flags);
-
- if (arg>31)
- reg_write(ohci, OHCI1394_IRMultiChanMaskHiSet,
- 1<<(arg-32));
- else
- reg_write(ohci, OHCI1394_IRMultiChanMaskLoSet,
- 1<<arg);
-
- spin_unlock_irqrestore(&ohci->IR_channel_lock, flags);
- DBGMSG("Listening enabled on channel %d", arg);
- break;
- }
- case ISO_UNLISTEN_CHANNEL:
- {
- u64 mask;
-
- if (arg<0 || arg>63) {
- PRINT(KERN_ERR,
- "%s: IS0 unlisten channel %d is out of range",
- __FUNCTION__, arg);
- return -EFAULT;
- }
-
- mask = (u64)0x1<<arg;
-
- spin_lock_irqsave(&ohci->IR_channel_lock, flags);
-
- if (!(ohci->ISO_channel_usage & mask)) {
- PRINT(KERN_ERR,
- "%s: IS0 unlisten channel %d is not used",
- __FUNCTION__, arg);
- spin_unlock_irqrestore(&ohci->IR_channel_lock, flags);
- return -EFAULT;
- }
-
- ohci->ISO_channel_usage &= ~mask;
- ohci->ir_legacy_channels &= ~mask;
-
- if (arg>31)
- reg_write(ohci, OHCI1394_IRMultiChanMaskHiClear,
- 1<<(arg-32));
- else
- reg_write(ohci, OHCI1394_IRMultiChanMaskLoClear,
- 1<<arg);
-
- spin_unlock_irqrestore(&ohci->IR_channel_lock, flags);
- DBGMSG("Listening disabled on channel %d", arg);
-
- if (ohci->ir_legacy_channels == 0) {
- stop_dma_rcv_ctx(&ohci->ir_legacy_context);
- DBGMSG("ISO legacy receive context stopped");
- }
-
- break;
- }
default:
PRINT_G(KERN_ERR, "ohci_devctl cmd %d not implemented yet",
cmd);
spin_unlock_irqrestore(&d->lock, flags);
}
-static void stop_dma_rcv_ctx(struct dma_rcv_ctx *d)
-{
- if (d->ctrlClear) {
- ohci1394_stop_context(d->ohci, d->ctrlClear, NULL);
-
- if (d->type == DMA_CTX_ISO) {
- /* disable interrupts */
- reg_write(d->ohci, OHCI1394_IsoRecvIntMaskClear, 1 << d->ctx);
- ohci1394_unregister_iso_tasklet(d->ohci, &d->ohci->ir_legacy_tasklet);
- } else {
- tasklet_kill(&d->task);
- }
- }
-}
-
-
static void free_dma_rcv_ctx(struct dma_rcv_ctx *d)
{
int i;
spin_lock_init(&d->lock);
- if (type == DMA_CTX_ISO) {
- ohci1394_init_iso_tasklet(&ohci->ir_legacy_tasklet,
- OHCI_ISO_MULTICHANNEL_RECEIVE,
- dma_rcv_tasklet, (unsigned long) d);
- } else {
- d->ctrlSet = context_base + OHCI1394_ContextControlSet;
- d->ctrlClear = context_base + OHCI1394_ContextControlClear;
- d->cmdPtr = context_base + OHCI1394_ContextCommandPtr;
-
- tasklet_init (&d->task, dma_rcv_tasklet, (unsigned long) d);
- }
+ d->ctrlSet = context_base + OHCI1394_ContextControlSet;
+ d->ctrlClear = context_base + OHCI1394_ContextControlClear;
+ d->cmdPtr = context_base + OHCI1394_ContextCommandPtr;
+ tasklet_init(&d->task, dma_rcv_tasklet, (unsigned long) d);
return 0;
}
spin_lock_init(&d->lock);
/* initialize tasklet */
- if (type == DMA_CTX_ISO) {
- ohci1394_init_iso_tasklet(&ohci->it_legacy_tasklet, OHCI_ISO_TRANSMIT,
- dma_trm_tasklet, (unsigned long) d);
- if (ohci1394_register_iso_tasklet(ohci,
- &ohci->it_legacy_tasklet) < 0) {
- PRINT(KERN_ERR, "No IT DMA context available");
- free_dma_trm_ctx(d);
- return -EBUSY;
- }
-
- /* IT can be assigned to any context by register_iso_tasklet */
- d->ctx = ohci->it_legacy_tasklet.context;
- d->ctrlSet = OHCI1394_IsoXmitContextControlSet + 16 * d->ctx;
- d->ctrlClear = OHCI1394_IsoXmitContextControlClear + 16 * d->ctx;
- d->cmdPtr = OHCI1394_IsoXmitCommandPtr + 16 * d->ctx;
- } else {
- d->ctrlSet = context_base + OHCI1394_ContextControlSet;
- d->ctrlClear = context_base + OHCI1394_ContextControlClear;
- d->cmdPtr = context_base + OHCI1394_ContextCommandPtr;
- tasklet_init (&d->task, dma_trm_tasklet, (unsigned long)d);
- }
-
+ d->ctrlSet = context_base + OHCI1394_ContextControlSet;
+ d->ctrlClear = context_base + OHCI1394_ContextControlClear;
+ d->cmdPtr = context_base + OHCI1394_ContextCommandPtr;
+ tasklet_init(&d->task, dma_trm_tasklet, (unsigned long)d);
return 0;
}
ohci->ISO_channel_usage = 0;
spin_lock_init(&ohci->IR_channel_lock);
- /* Allocate the IR DMA context right here so we don't have
- * to do it in interrupt path - note that this doesn't
- * waste much memory and avoids the jugglery required to
- * allocate it in IRQ path. */
- if (alloc_dma_rcv_ctx(ohci, &ohci->ir_legacy_context,
- DMA_CTX_ISO, 0, IR_NUM_DESC,
- IR_BUF_SIZE, IR_SPLIT_BUF_SIZE,
- OHCI1394_IsoRcvContextBase) < 0) {
- FAIL(-ENOMEM, "Cannot allocate IR Legacy DMA context");
- }
-
- /* We hopefully don't have to pre-allocate IT DMA like we did
- * for IR DMA above. Allocate it on-demand and mark inactive. */
- ohci->it_legacy_context.ohci = NULL;
spin_lock_init(&ohci->event_lock);
/*
free_dma_rcv_ctx(&ohci->ar_resp_context);
free_dma_trm_ctx(&ohci->at_req_context);
free_dma_trm_ctx(&ohci->at_resp_context);
- free_dma_rcv_ctx(&ohci->ir_legacy_context);
- free_dma_trm_ctx(&ohci->it_legacy_context);
case OHCI_INIT_HAVE_SELFID_BUFFER:
pci_free_consistent(ohci->dev, OHCI1394_SI_DMA_BUF_SIZE,
projects / karo-tx-linux.git / blobdiff