vxge/vxgehal/vxgehal-channel.c

37  * vxge_hal_channel_allocate - Allocate memory for channel
40  * @type: Type of channel
45  * This function allocates required memory for the channel and various arrays
46  * in the channel
58 	__hal_channel_t *channel;
87 	channel = (__hal_channel_t *) vxge_os_malloc(hldev->pdev, size);
88 	if (channel == NULL) {
94 	vxge_os_memzero(channel, size);
95 	vxge_list_init(&channel->item);
97 	channel->pdev = hldev->pdev;
98 	channel->type = type;
99 	channel->devh = devh;
100 	channel->vph = vph;
102 	channel->userdata = userdata;
103 	channel->per_dtr_space = per_dtr_space;
105 	channel->length = length;
107 	channel->dtr_arr = (__hal_dtr_item_t *) vxge_os_malloc(hldev->pdev,
109 	if (channel->dtr_arr == NULL) {
110 		vxge_hal_channel_free(channel);
116 	vxge_os_memzero(channel->dtr_arr, sizeof(__hal_dtr_item_t)*length);
118 	channel->compl_index = 0;
119 	channel->reserve_index = 0;
122 		channel->dtr_arr[i].state = VXGE_HAL_CHANNEL_DTR_FREE;
126 	return (channel);
130  * __hal_channel_free - Free memory allocated for channel
131  * @channel: channel to be freed
133  * This function deallocates memory from the channel and various arrays
134  * in the channel
138     __hal_channel_t *channel)
143 	vxge_assert(channel != NULL);
145 	hldev = (vxge_hal_device_t *) channel->devh;
150 	vxge_hal_trace_log_channel("channel = 0x"VXGE_OS_STXFMT,
151 	    (ptr_t) channel);
153 	vxge_assert(channel->pdev);
155 	if (channel->dtr_arr) {
156 		vxge_os_free(channel->pdev, channel->dtr_arr,
157 		    sizeof(__hal_dtr_item_t)*channel->length);
158 		channel->dtr_arr = NULL;
161 	switch (channel->type) {
172 	vxge_os_free(channel->pdev, channel, size);
179  * __hal_channel_initialize - Initialize a channel
180  * @channel: channel to be initialized
182  * This function initializes a channel by properly
187     __hal_channel_t *channel)
192 	vxge_assert(channel != NULL);
194 	hldev = (vxge_hal_device_t *) channel->devh;
196 	    ((__hal_vpath_handle_t *) channel->vph)->vpath;
203 	vxge_hal_trace_log_channel("channel = 0x"VXGE_OS_STXFMT,
204 	    (ptr_t) channel);
206 	switch (channel->type) {
208 		vpath->fifoh = (vxge_hal_fifo_h) channel;
209 		channel->stats =
210 		    &((__hal_fifo_t *) channel)->stats->common_stats;
213 		vpath->ringh = (vxge_hal_ring_h) channel;
214 		channel->stats =
215 		    &((__hal_ring_t *) channel)->stats->common_stats;
223 	channel->is_initd = 1;
231  * __hal_channel_reset - Resets a channel
232  * @channel: channel to be reset
234  * This function resets a channel by properly setting the various references
238     __hal_channel_t *channel)
243 	vxge_assert(channel != NULL);
245 	hldev = (__hal_device_t *) channel->devh;
250 	vxge_hal_trace_log_channel("channel = 0x"VXGE_OS_STXFMT,
251 	    (ptr_t) channel);
253 	vxge_assert(channel->pdev);
255 	channel->compl_index = 0;
256 	channel->reserve_index = 0;
258 	for (i = 0; i < channel->length; i++) {
259 		channel->dtr_arr[i].state =
270  * vxge_hal_channel_terminate - Deinitializes a channel
271  * @channel: channel to be deinitialized
273  * This function deinitializes a channel by properly
278     __hal_channel_t *channel)
283 	vxge_assert(channel != NULL);
285 	if (!channel || !channel->is_initd)
288 	hldev = (__hal_device_t *) channel->devh;
290 	    ((__hal_vpath_handle_t *) channel->vph)->vpath;
297 	vxge_hal_trace_log_channel("channel = 0x"VXGE_OS_STXFMT,
298 	    (ptr_t) channel);
300 	switch (channel->type) {
308 		vxge_list_remove(&channel->item);
312 		vxge_list_remove(&channel->item);
316 		vxge_list_remove(&channel->item);
353     __hal_channel_t * channel)
355 	__hal_device_t *hldev = (__hal_device_t *) channel->devh;
357 	vxge_assert(channel != NULL);
362 	vxge_hal_trace_log_channel("channel = 0x"VXGE_OS_STXFMT,
363 	    (ptr_t) channel);
371 	vxge_list_insert_before(&channel->item, &hldev->pending_channel_list);
379 	__hal_channel_process_pending_list(channel->devh);
390 	__hal_channel_t *channel;
408 		channel = (__hal_channel_t *)
411 		if (channel != NULL)
412 			vxge_list_remove(&channel->item);
420 		if (channel == NULL) {
426 		switch (channel->type) {
440 			vxge_list_insert(&channel->item,