dc4ee6ca91
make use of it where possible. This primarily brings in support for newer hardware, and FreeBSD is not yet able to support the abundance of IRQs on new hardware and many features in the Ethernet driver. Because of the changes to IRQs in the Simple Executive, we have to maintain our own list of Octeon IRQs now, which probably can be pared-down and be specific to the CIU interrupt unit soon, and when other interrupt mechanisms are added they can maintain their own definitions. Remove unmasking of interrupts from within the UART device now that the function used is no longer present in the Simple Executive. The unmasking seems to have been gratuitous as this is more properly handled by the buses above the UART device, and seems to work on that basis.
143 lines
4.5 KiB
C
143 lines
4.5 KiB
C
/***********************license start***************
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* Copyright (c) 2003-2010 Cavium Inc. (support@cavium.com). All rights
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* reserved.
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*
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials provided
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* with the distribution.
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* * Neither the name of Cavium Inc. nor the names of
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* its contributors may be used to endorse or promote products
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* derived from this software without specific prior written
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* permission.
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* This Software, including technical data, may be subject to U.S. export control
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* laws, including the U.S. Export Administration Act and its associated
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* regulations, and may be subject to export or import regulations in other
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* countries.
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* TO THE MAXIMUM EXTENT PERMITTED BY LAW, THE SOFTWARE IS PROVIDED "AS IS"
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* AND WITH ALL FAULTS AND CAVIUM INC. MAKES NO PROMISES, REPRESENTATIONS OR
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* WARRANTIES, EITHER EXPRESS, IMPLIED, STATUTORY, OR OTHERWISE, WITH RESPECT TO
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* THE SOFTWARE, INCLUDING ITS CONDITION, ITS CONFORMITY TO ANY REPRESENTATION OR
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* DESCRIPTION, OR THE EXISTENCE OF ANY LATENT OR PATENT DEFECTS, AND CAVIUM
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* SPECIFICALLY DISCLAIMS ALL IMPLIED (IF ANY) WARRANTIES OF TITLE,
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* MERCHANTABILITY, NONINFRINGEMENT, FITNESS FOR A PARTICULAR PURPOSE, LACK OF
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* VIRUSES, ACCURACY OR COMPLETENESS, QUIET ENJOYMENT, QUIET POSSESSION OR
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* CORRESPONDENCE TO DESCRIPTION. THE ENTIRE RISK ARISING OUT OF USE OR
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* PERFORMANCE OF THE SOFTWARE LIES WITH YOU.
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***********************license end**************************************/
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/**
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* @file
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*
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* Interface to Core, IO and DDR Clock.
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*
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* <hr>$Revision: 45089 $<hr>
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*/
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#ifdef CVMX_BUILD_FOR_LINUX_KERNEL
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#include <linux/module.h>
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#include <asm/octeon/octeon.h>
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#include <asm/octeon/cvmx-clock.h>
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#include <asm/octeon/cvmx-npei-defs.h>
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#include <asm/octeon/cvmx-pexp-defs.h>
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#include <asm/octeon/cvmx-dbg-defs.h>
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#else
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#if !defined(__FreeBSD__) || !defined(_KERNEL)
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#include "executive-config.h"
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#endif
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#include "cvmx.h"
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#endif
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#ifndef CVMX_BUILD_FOR_UBOOT
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static uint64_t rate_eclk = 0;
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static uint64_t rate_sclk = 0;
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static uint64_t rate_dclk = 0;
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#endif
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/**
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* Get clock rate based on the clock type.
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*
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* @param clock - Enumeration of the clock type.
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* @return - return the clock rate.
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*/
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uint64_t cvmx_clock_get_rate(cvmx_clock_t clock)
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{
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const uint64_t REF_CLOCK = 50000000;
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#ifdef CVMX_BUILD_FOR_UBOOT
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uint64_t rate_eclk = 0;
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uint64_t rate_sclk = 0;
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uint64_t rate_dclk = 0;
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#endif
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if (cvmx_unlikely(!rate_eclk))
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{
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/* Note: The order of these checks is important.
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** octeon_has_feature(OCTEON_FEATURE_PCIE) is true for both 6XXX
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** and 52XX/56XX, so OCTEON_FEATURE_NPEI _must_ be checked first */
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if (octeon_has_feature(OCTEON_FEATURE_NPEI))
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{
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cvmx_npei_dbg_data_t npei_dbg_data;
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npei_dbg_data.u64 = cvmx_read_csr(CVMX_PEXP_NPEI_DBG_DATA);
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rate_eclk = REF_CLOCK * npei_dbg_data.s.c_mul;
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rate_sclk = rate_eclk;
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}
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else if (octeon_has_feature(OCTEON_FEATURE_PCIE))
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{
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cvmx_mio_rst_boot_t mio_rst_boot;
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mio_rst_boot.u64 = cvmx_read_csr(CVMX_MIO_RST_BOOT);
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rate_eclk = REF_CLOCK * mio_rst_boot.s.c_mul;
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rate_sclk = REF_CLOCK * mio_rst_boot.s.pnr_mul;
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}
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else
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{
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cvmx_dbg_data_t dbg_data;
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dbg_data.u64 = cvmx_read_csr(CVMX_DBG_DATA);
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rate_eclk = REF_CLOCK * dbg_data.s.c_mul;
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rate_sclk = rate_eclk;
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}
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}
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switch (clock)
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{
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case CVMX_CLOCK_SCLK:
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case CVMX_CLOCK_TIM:
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case CVMX_CLOCK_IPD:
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return rate_sclk;
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case CVMX_CLOCK_RCLK:
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case CVMX_CLOCK_CORE:
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return rate_eclk;
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case CVMX_CLOCK_DDR:
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#if !defined(CVMX_BUILD_FOR_LINUX_HOST) && !defined(CVMX_BUILD_FOR_TOOLCHAIN)
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if (cvmx_unlikely(!rate_dclk))
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rate_dclk = cvmx_sysinfo_get()->dram_data_rate_hz;
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#endif
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return rate_dclk;
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}
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cvmx_dprintf("cvmx_clock_get_rate: Unknown clock type\n");
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return 0;
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}
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#ifdef CVMX_BUILD_FOR_LINUX_KERNEL
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EXPORT_SYMBOL(cvmx_clock_get_rate);
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#endif
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