7  * Copyright (c) 2003-2008 Cavium Networks
14  * AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty
21  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
34 #include <asm/octeon/cvmx-config.h>
36 #include <asm/octeon/cvmx-pko.h>
37 #include <asm/octeon/cvmx-spi.h>
39 #include <asm/octeon/cvmx-spxx-defs.h>
40 #include <asm/octeon/cvmx-stxx-defs.h>
41 #include <asm/octeon/cvmx-srxx-defs.h>
54     { "UNKNOWN", "TX Halfplex", "Rx Halfplex", "Duplex" };
97  *		    can operate as a full duplex (both Tx and Rx data paths
98  *		    active) or as a halfplex (either the Tx data path is
100  * @timeout:   Timeout to wait for clock synchronization in seconds
108 	int res = -1;  in cvmx_spi_start_interface()
120 	/* Callback to perform clock detection */  in cvmx_spi_start_interface()
126 	/* Callback to perform calendar sync */  in cvmx_spi_start_interface()
143  *		    can operate as a full duplex (both Tx and Rx data paths
144  *		    active) or as a halfplex (either the Tx data path is
146  * @timeout:   Timeout to wait for clock synchronization in seconds
152 	int res = -1;  in cvmx_spi_restart_interface()
165 	/* Callback to perform clock detection */  in cvmx_spi_restart_interface()
171 	/* Callback to perform calendar sync */  in cvmx_spi_restart_interface()
188  *		    can operate as a full duplex (both Tx and Rx data paths
189  *		    active) or as a halfplex (either the Tx data path is
192  * Returns Zero on success, non-zero error code on failure (will cause
204 	uint64_t MS = cvmx_sysinfo_get()->cpu_clock_hz / 1000;  in cvmx_spi_reset_cb()
228 		cvmx_dprintf("ERROR SPI%d: BIST failed on TX calendar table\n",  in cvmx_spi_reset_cb()
298  * Callback to setup calendar and miscellaneous settings before clock detection
303  *		    can operate as a full duplex (both Tx and Rx data paths
304  *		    active) or as a halfplex (either the Tx data path is
308  * Returns Zero on success, non-zero error code on failure (will cause
322 		srxx_com_ctl.s.prts = num_ports - 1;  in cvmx_spi_calendar_setup_cb()
417  * Callback to perform clock detection
422  *		    can operate as a full duplex (both Tx and Rx data paths
423  *		    active) or as a halfplex (either the Tx data path is
425  * @timeout:   Timeout to wait for clock synchronization in seconds
427  * Returns Zero on success, non-zero error code on failure (will cause
435 	uint64_t MS = cvmx_sysinfo_get()->cpu_clock_hz / 1000;  in cvmx_spi_clock_detect_cb()
438 	 * Regardless of operating mode, both Tx and Rx clocks must be  in cvmx_spi_clock_detect_cb()
444 	 * Require 100 clock transitions in order to avoid any noise  in cvmx_spi_clock_detect_cb()
452 			 * We've seen a clock transition, so decrement  in cvmx_spi_clock_detect_cb()
455 			clock_transitions--;  in cvmx_spi_clock_detect_cb()
462 			return -1;  in cvmx_spi_clock_detect_cb()
469 	 * Require 100 clock transitions in order to avoid any noise in the  in cvmx_spi_clock_detect_cb()
477 			 * We've seen a clock transition, so decrement  in cvmx_spi_clock_detect_cb()
480 			clock_transitions--;  in cvmx_spi_clock_detect_cb()
487 			return -1;  in cvmx_spi_clock_detect_cb()
500  *		    can operate as a full duplex (both Tx and Rx data paths
501  *		    active) or as a halfplex (either the Tx data path is
505  * Returns Zero on success, non-zero error code on failure (will cause
512 	uint64_t MS = cvmx_sysinfo_get()->cpu_clock_hz / 1000;  in cvmx_spi_training_cb()
516 	/* SRX0 & STX0 Inf0 Links are configured - begin training */  in cvmx_spi_training_cb()
550 			rx_training_needed--;  in cvmx_spi_training_cb()
556 			return -1;  in cvmx_spi_training_cb()
569  *		    can operate as a full duplex (both Tx and Rx data paths
570  *		    active) or as a halfplex (either the Tx data path is
574  * Returns Zero on success, non-zero error code on failure (will cause
579 	uint64_t MS = cvmx_sysinfo_get()->cpu_clock_hz / 1000;  in cvmx_spi_calendar_sync_cb()
593 		/* STX0 has achieved sync */  in cvmx_spi_calendar_sync_cb()
603 		/* Waiting for calendar sync on STX0 STAT */  in cvmx_spi_calendar_sync_cb()
604 		cvmx_dprintf("SPI%d: Waiting to sync on STX[%d] STAT\n",  in cvmx_spi_calendar_sync_cb()
607 		/* SPX0_CLK_STAT - SPX0_CLK_STAT[STXCAL] should be 1 (bit10) */  in cvmx_spi_calendar_sync_cb()
612 				return -1;  in cvmx_spi_calendar_sync_cb()
626  *		    can operate as a full duplex (both Tx and Rx data paths
627  *		    active) or as a halfplex (either the Tx data path is
630  * Returns Zero on success, non-zero error code on failure (will cause
652 		cvmx_dprintf("SPI%d: Tx is now up\n", interface);  in cvmx_spi_interface_up_cb()
660 	gmxx_rxx_frm_max.s.len = 64 * 1024 - 4;  in cvmx_spi_interface_up_cb()
664 	gmxx_rxx_jabber.s.cnt = 64 * 1024 - 4;  in cvmx_spi_interface_up_cb()