hwtracing/coresight/coresight-tmc-etr.c

61  * The TMC ETR SG has a page size of 4K. The SG table contains pointers
66  * A table entry has the following format:
79  *	b11 - Link. The address points to the base of next table.
107  * @sg_table:		Generic SG Table holding the data/table pages.
109  *			address of the table.
117  * tmc_etr_sg_table_entries: Total number of table entries required to map
122  * with the last entry pointing to another page of table entries.
268  * Alloc pages for the table. Since this will be used by the device,
313  * tmc_alloc_sg_table: Allocate and setup dma pages for the TMC SG table
319  * @nr_tpages	- Number of pages for the table entries.
357 void tmc_sg_table_sync_data_range(struct tmc_sg_table *table,
362 	struct device *real_dev = table->dev->parent;
363 	struct tmc_pages *data = &table->data_pages;
374 /* tmc_sg_sync_table: Sync the page table */
421 		      dma_addr_t addr, bool table)
427 	if (table) {
486  * Populate the SG Table page table entries from table/data
501 	sgte_t *ptr; /* pointer to the table entry to fill */
508 	 * Use the contiguous virtual address of the table to update entries.
519 			 * the next table page. If this sg_table is the last
544 		 * Move to the next table pointer, moving the table page index
559  * tmc_init_etr_sg_table: Allocate a TMC ETR SG table, data buffer of @size and
560  * populate the table.
589 	/* TMC should use table base address for DBA */
592 	/* Sync the table pages for the HW */
740 	struct tmc_sg_table *table = etr_table->sg_table;
743 	r_offset = tmc_sg_get_data_page_offset(table, rrp);
745 		dev_warn(table->dev,
751 	w_offset = tmc_sg_get_data_page_offset(table, rwp);
753 		dev_warn(table->dev,
765 	tmc_sg_table_sync_data_range(table, r_offset, etr_buf->len);