2  * SPDX-License-Identifier: MIT
4  * QTests for the Xilinx Versal CANFD controller.
8  * Written-by: Vikram Garhwal<vikram.garhwal@amd.com>
57 /* CANFD modes. */
63 /* CANFD status. */
73 /* We are sending one canfd message. */
84 /* CANFD frame size ID, DLC and 16 DATA word. */
86 /* CAN frame size ID, DLC and 2 DATA word. */
89 /* Set the filters for CANFD controller. */
170     /* Generate random TX data for CANFD frame. */  in generate_random_data()
172         for (int i = 0; i < CANFD_FRAME_SIZE - 2; i++) {  in generate_random_data()
173             buf_tx[2 + i] = g_random_int();  in generate_random_data()
177         for (int i = 0; i < CAN_FRAME_SIZE - 2; i++) {  in generate_random_data()
178             buf_tx[2 + i] = g_random_int();  in generate_random_data()
191     /* Read the interrupt on CANFD rx. */  in read_data()
206     /* Read the RX register data for CANFD. */  in read_data()
210     for (int i = 0; i < frame_size - 2; i++) {  in read_data()
211         buf_rx[i + 2] = qtest_readl(qts,  in read_data()
222     /* Write the TX register data for CANFD. */  in write_data()
227         for (int i = 0; i < CANFD_FRAME_SIZE - 2; i++) {  in write_data()
229                          buf_tx[2 + i]);  in write_data()
232         qtest_writel(qts, can_base_addr + R_TXDATA1_OFFSET, buf_tx[2]);  in write_data()
244     /* Read the interrupt on CANFD for tx. */  in send_data()
275  * Xilinx CANFD supports both CAN and CANFD frames. This test will be
277  * canbus. CANFD0 initiate the data transfer to can-bus, CANFD1 receives the
290     QTestState *qts = qtest_init("-machine xlnx-versal-virt"  in test_can_data_transfer()
291                 " -object can-bus,id=canbus"  in test_can_data_transfer()
292                 " -machine canbus0=canbus"  in test_can_data_transfer()
293                 " -machine canbus1=canbus"  in test_can_data_transfer()
317  * This test will be transferring CANFD frame i.e. 64 bytes of data from CANFD0
318  * and CANFD1 through canbus. CANFD0 initiate the data transfer to can-bus,
319  * CANFD1 receives the data. Test compares the CANFD frame data sent from CANFD0
330     QTestState *qts = qtest_init("-machine xlnx-versal-virt"  in test_canfd_data_transfer()
331                 " -object can-bus,id=canbus"  in test_canfd_data_transfer()
332                 " -machine canbus0=canbus"  in test_canfd_data_transfer()
333                 " -machine canbus1=canbus"  in test_canfd_data_transfer()
359  * respective CANFD Controller.
369     QTestState *qts = qtest_init("-machine xlnx-versal-virt"  in test_can_loopback()
370                 " -object can-bus,id=canbus"  in test_can_loopback()
371                 " -machine canbus0=canbus"  in test_can_loopback()
372                 " -machine canbus1=canbus"  in test_can_loopback()
407     qtest_add_func("/net/canfd/can_data_transfer", test_can_data_transfer);  in main()
408     qtest_add_func("/net/canfd/canfd_data_transfer", test_canfd_data_transfer);  in main()
409     qtest_add_func("/net/canfd/can_loopback", test_can_loopback);  in main()