cavium-octeon/executive/cvmx-spi.c

92  * Initialize and start the SPI interface.
94  * @interface: The identifier of the packet interface to configure and
95  *		    use as a SPI interface.
96  * @mode:      The operating mode for the SPI interface. The interface
105 int cvmx_spi_start_interface(int interface, cvmx_spi_mode_t mode, int timeout,
114 	INVOKE_CB(cvmx_spi_callbacks.reset_cb, interface, mode);
117 	INVOKE_CB(cvmx_spi_callbacks.calendar_setup_cb, interface, mode,
121 	INVOKE_CB(cvmx_spi_callbacks.clock_detect_cb, interface, mode, timeout);
124 	INVOKE_CB(cvmx_spi_callbacks.training_cb, interface, mode, timeout);
127 	INVOKE_CB(cvmx_spi_callbacks.calendar_sync_cb, interface, mode,
130 	/* Callback to handle interface coming up */
131 	INVOKE_CB(cvmx_spi_callbacks.interface_up_cb, interface, mode);
137  * This routine restarts the SPI interface after it has lost synchronization
140  * @interface: The identifier of the packet interface to configure and
141  *		    use as a SPI interface.
142  * @mode:      The operating mode for the SPI interface. The interface
150 int cvmx_spi_restart_interface(int interface, cvmx_spi_mode_t mode, int timeout)
157 	cvmx_dprintf("SPI%d: Restart %s\n", interface, modes[mode]);
160 	INVOKE_CB(cvmx_spi_callbacks.reset_cb, interface, mode);
166 	INVOKE_CB(cvmx_spi_callbacks.clock_detect_cb, interface, mode, timeout);
169 	INVOKE_CB(cvmx_spi_callbacks.training_cb, interface, mode, timeout);
172 	INVOKE_CB(cvmx_spi_callbacks.calendar_sync_cb, interface, mode,
175 	/* Callback to handle interface coming up */
176 	INVOKE_CB(cvmx_spi_callbacks.interface_up_cb, interface, mode);
185  * @interface: The identifier of the packet interface to configure and
186  *		    use as a SPI interface.
187  * @mode:      The operating mode for the SPI interface. The interface
195 int cvmx_spi_reset_cb(int interface, cvmx_spi_mode_t mode)
207 	spxx_int_msk.u64 = cvmx_read_csr(CVMX_SPXX_INT_MSK(interface));
208 	cvmx_write_csr(CVMX_SPXX_INT_MSK(interface), 0);
209 	stxx_int_msk.u64 = cvmx_read_csr(CVMX_STXX_INT_MSK(interface));
210 	cvmx_write_csr(CVMX_STXX_INT_MSK(interface), 0);
212 	/* Run BIST in the SPI interface */
213 	cvmx_write_csr(CVMX_SRXX_COM_CTL(interface), 0);
214 	cvmx_write_csr(CVMX_STXX_COM_CTL(interface), 0);
217 	cvmx_write_csr(CVMX_SPXX_CLK_CTL(interface), spxx_clk_ctl.u64);
219 	spxx_bist_stat.u64 = cvmx_read_csr(CVMX_SPXX_BIST_STAT(interface));
223 		     interface);
226 			     interface);
229 			     interface);
238 		cvmx_write_csr(CVMX_SRXX_SPI4_CALX(index, interface),
243 		cvmx_write_csr(CVMX_STXX_SPI4_CALX(index, interface),
248 	cvmx_write_csr(CVMX_SPXX_INT_REG(interface),
249 		       cvmx_read_csr(CVMX_SPXX_INT_REG(interface)));
250 	cvmx_write_csr(CVMX_SPXX_INT_MSK(interface), spxx_int_msk.u64);
251 	cvmx_write_csr(CVMX_STXX_INT_REG(interface),
252 		       cvmx_read_csr(CVMX_STXX_INT_REG(interface)));
253 	cvmx_write_csr(CVMX_STXX_INT_MSK(interface), stxx_int_msk.u64);
267 	cvmx_write_csr(CVMX_SPXX_CLK_CTL(interface), spxx_clk_ctl.u64);
272 	cvmx_write_csr(CVMX_SPXX_CLK_CTL(interface), spxx_clk_ctl.u64);
288 	cvmx_write_csr(CVMX_SPXX_TRN4_CTL(interface), spxx_trn4_ctl.u64);
291 	cvmx_write_csr(CVMX_SPXX_DBG_DESKEW_CTL(interface),
300  * @interface: The identifier of the packet interface to configure and
301  *		    use as a SPI interface.
302  * @mode:      The operating mode for the SPI interface. The interface
311 int cvmx_spi_calendar_setup_cb(int interface, cvmx_spi_mode_t mode,
325 		cvmx_write_csr(CVMX_SRXX_COM_CTL(interface), srxx_com_ctl.u64);
339 			cvmx_write_csr(CVMX_SRXX_SPI4_CALX(index, interface),
346 		cvmx_write_csr(CVMX_SRXX_SPI4_STAT(interface),
362 		cvmx_write_csr(CVMX_STXX_ARB_CTL(interface), stxx_arb_ctl.u64);
368 		cvmx_write_csr(CVMX_GMXX_TX_SPI_MAX(interface),
373 		cvmx_write_csr(CVMX_GMXX_TX_SPI_THRESH(interface),
379 		cvmx_write_csr(CVMX_GMXX_TX_SPI_CTL(interface),
387 		cvmx_write_csr(CVMX_STXX_SPI4_DAT(interface),
402 			cvmx_write_csr(CVMX_STXX_SPI4_CALX(index, interface),
409 		cvmx_write_csr(CVMX_STXX_SPI4_STAT(interface),
419  * @interface: The identifier of the packet interface to configure and
420  *		    use as a SPI interface.
421  * @mode:      The operating mode for the SPI interface. The interface
430 int cvmx_spi_clock_detect_cb(int interface, cvmx_spi_mode_t mode, int timeout)
439 	 * present for the SPI interface to operate.
441 	cvmx_dprintf("SPI%d: Waiting to see TsClk...\n", interface);
449 		stat.u64 = cvmx_read_csr(CVMX_SPXX_CLK_STAT(interface));
456 			cvmx_write_csr(CVMX_SPXX_CLK_STAT(interface), stat.u64);
461 			cvmx_dprintf("SPI%d: Timeout\n", interface);
466 	cvmx_dprintf("SPI%d: Waiting to see RsClk...\n", interface);
474 		stat.u64 = cvmx_read_csr(CVMX_SPXX_CLK_STAT(interface));
481 			cvmx_write_csr(CVMX_SPXX_CLK_STAT(interface), stat.u64);
486 			cvmx_dprintf("SPI%d: Timeout\n", interface);
497  * @interface: The identifier of the packet interface to configure and
498  *		    use as a SPI interface.
499  * @mode:      The operating mode for the SPI interface. The interface
508 int cvmx_spi_training_cb(int interface, cvmx_spi_mode_t mode, int timeout)
529 	cvmx_write_csr(CVMX_SPXX_CLK_CTL(interface), spxx_clk_ctl.u64);
533 	spxx_trn4_ctl.u64 = cvmx_read_csr(CVMX_SPXX_TRN4_CTL(interface));
535 	cvmx_write_csr(CVMX_SPXX_TRN4_CTL(interface), spxx_trn4_ctl.u64);
538 	cvmx_dprintf("SPI%d: Waiting for training\n", interface);
548 		stat.u64 = cvmx_read_csr(CVMX_SPXX_CLK_STAT(interface));
551 			cvmx_write_csr(CVMX_SPXX_CLK_STAT(interface), stat.u64);
555 			cvmx_dprintf("SPI%d: Timeout\n", interface);
566  * @interface: The identifier of the packet interface to configure and
567  *		    use as a SPI interface.
568  * @mode:      The operating mode for the SPI interface. The interface
577 int cvmx_spi_calendar_sync_cb(int interface, cvmx_spi_mode_t mode, int timeout)
581 		/* SRX0 interface should be good, send calendar data */
585 		     interface);
586 		srxx_com_ctl.u64 = cvmx_read_csr(CVMX_SRXX_COM_CTL(interface));
589 		cvmx_write_csr(CVMX_SRXX_COM_CTL(interface), srxx_com_ctl.u64);
601 		cvmx_write_csr(CVMX_STXX_COM_CTL(interface), stxx_com_ctl.u64);
605 			     interface, interface);
609 			stat.u64 = cvmx_read_csr(CVMX_SPXX_CLK_STAT(interface));
611 				cvmx_dprintf("SPI%d: Timeout\n", interface);
621  * Callback to handle interface up
623  * @interface: The identifier of the packet interface to configure and
624  *		    use as a SPI interface.
625  * @mode:      The operating mode for the SPI interface. The interface
633 int cvmx_spi_interface_up_cb(int interface, cvmx_spi_mode_t mode)
641 		srxx_com_ctl.u64 = cvmx_read_csr(CVMX_SRXX_COM_CTL(interface));
643 		cvmx_write_csr(CVMX_SRXX_COM_CTL(interface), srxx_com_ctl.u64);
644 		cvmx_dprintf("SPI%d: Rx is now up\n", interface);
649 		stxx_com_ctl.u64 = cvmx_read_csr(CVMX_STXX_COM_CTL(interface));
651 		cvmx_write_csr(CVMX_STXX_COM_CTL(interface), stxx_com_ctl.u64);
652 		cvmx_dprintf("SPI%d: Tx is now up\n", interface);
657 	cvmx_write_csr(CVMX_GMXX_RXX_FRM_MIN(0, interface),
661 	cvmx_write_csr(CVMX_GMXX_RXX_FRM_MAX(0, interface),
665 	cvmx_write_csr(CVMX_GMXX_RXX_JABBER(0, interface), gmxx_rxx_jabber.u64);