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Diffstat (limited to 'sys/contrib/octeon-sdk/cvmx-ipd.h')
| -rw-r--r-- | sys/contrib/octeon-sdk/cvmx-ipd.h | 203 |
1 files changed, 203 insertions, 0 deletions
diff --git a/sys/contrib/octeon-sdk/cvmx-ipd.h b/sys/contrib/octeon-sdk/cvmx-ipd.h new file mode 100644 index 0000000..3765a35 --- /dev/null +++ b/sys/contrib/octeon-sdk/cvmx-ipd.h @@ -0,0 +1,203 @@ +/***********************license start*************** + * Copyright (c) 2003-2010 Cavium Inc. (support@cavium.com). All rights + * reserved. + * + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following + * disclaimer in the documentation and/or other materials provided + * with the distribution. + + * * Neither the name of Cavium Inc. nor the names of + * its contributors may be used to endorse or promote products + * derived from this software without specific prior written + * permission. + + * This Software, including technical data, may be subject to U.S. export control + * laws, including the U.S. Export Administration Act and its associated + * regulations, and may be subject to export or import regulations in other + * countries. + + * TO THE MAXIMUM EXTENT PERMITTED BY LAW, THE SOFTWARE IS PROVIDED "AS IS" + * AND WITH ALL FAULTS AND CAVIUM INC. MAKES NO PROMISES, REPRESENTATIONS OR + * WARRANTIES, EITHER EXPRESS, IMPLIED, STATUTORY, OR OTHERWISE, WITH RESPECT TO + * THE SOFTWARE, INCLUDING ITS CONDITION, ITS CONFORMITY TO ANY REPRESENTATION OR + * DESCRIPTION, OR THE EXISTENCE OF ANY LATENT OR PATENT DEFECTS, AND CAVIUM + * SPECIFICALLY DISCLAIMS ALL IMPLIED (IF ANY) WARRANTIES OF TITLE, + * MERCHANTABILITY, NONINFRINGEMENT, FITNESS FOR A PARTICULAR PURPOSE, LACK OF + * VIRUSES, ACCURACY OR COMPLETENESS, QUIET ENJOYMENT, QUIET POSSESSION OR + * CORRESPONDENCE TO DESCRIPTION. THE ENTIRE RISK ARISING OUT OF USE OR + * PERFORMANCE OF THE SOFTWARE LIES WITH YOU. + ***********************license end**************************************/ + + + + + + + +/** + * @file + * + * Interface to the hardware Input Packet Data unit. + * + * <hr>$Revision: 70030 $<hr> + */ + + +#ifndef __CVMX_IPD_H__ +#define __CVMX_IPD_H__ + +#ifdef CVMX_BUILD_FOR_LINUX_KERNEL +#include <asm/octeon/cvmx.h> +#include <asm/octeon/cvmx-config.h> +#include <asm/octeon/cvmx-ipd-defs.h> +#else +# ifndef CVMX_DONT_INCLUDE_CONFIG +# include "executive-config.h" +# ifdef CVMX_ENABLE_PKO_FUNCTIONS +# include "cvmx-config.h" +# endif +# endif +#endif + +#ifdef __cplusplus +extern "C" { +#endif + +#ifndef CVMX_ENABLE_LEN_M8_FIX +#define CVMX_ENABLE_LEN_M8_FIX 0 +#endif + +/* CSR typedefs have been moved to cvmx-ipd-defs.h */ + +typedef cvmx_ipd_1st_mbuff_skip_t cvmx_ipd_mbuff_not_first_skip_t; +typedef cvmx_ipd_1st_next_ptr_back_t cvmx_ipd_second_next_ptr_back_t; + + +/** + * Configure IPD + * + * @param mbuff_size Packets buffer size in 8 byte words + * @param first_mbuff_skip + * Number of 8 byte words to skip in the first buffer + * @param not_first_mbuff_skip + * Number of 8 byte words to skip in each following buffer + * @param first_back Must be same as first_mbuff_skip / 128 + * @param second_back + * Must be same as not_first_mbuff_skip / 128 + * @param wqe_fpa_pool + * FPA pool to get work entries from + * @param cache_mode + * @param back_pres_enable_flag + * Enable or disable port back pressure at a global level. + * This should always be 1 as more accurate control can be + * found in IPD_PORTX_BP_PAGE_CNT[BP_ENB]. + */ +static inline void cvmx_ipd_config(uint64_t mbuff_size, + uint64_t first_mbuff_skip, + uint64_t not_first_mbuff_skip, + uint64_t first_back, + uint64_t second_back, + uint64_t wqe_fpa_pool, + cvmx_ipd_mode_t cache_mode, + uint64_t back_pres_enable_flag + ) +{ + cvmx_ipd_1st_mbuff_skip_t first_skip; + cvmx_ipd_mbuff_not_first_skip_t not_first_skip; + cvmx_ipd_packet_mbuff_size_t size; + cvmx_ipd_1st_next_ptr_back_t first_back_struct; + cvmx_ipd_second_next_ptr_back_t second_back_struct; + cvmx_ipd_wqe_fpa_queue_t wqe_pool; + cvmx_ipd_ctl_status_t ipd_ctl_reg; + + first_skip.u64 = 0; + first_skip.s.skip_sz = first_mbuff_skip; + cvmx_write_csr(CVMX_IPD_1ST_MBUFF_SKIP, first_skip.u64); + + not_first_skip.u64 = 0; + not_first_skip.s.skip_sz = not_first_mbuff_skip; + cvmx_write_csr(CVMX_IPD_NOT_1ST_MBUFF_SKIP, not_first_skip.u64); + + size.u64 = 0; + size.s.mb_size = mbuff_size; + cvmx_write_csr(CVMX_IPD_PACKET_MBUFF_SIZE, size.u64); + + first_back_struct.u64 = 0; + first_back_struct.s.back = first_back; + cvmx_write_csr(CVMX_IPD_1st_NEXT_PTR_BACK, first_back_struct.u64); + + second_back_struct.u64 = 0; + second_back_struct.s.back = second_back; + cvmx_write_csr(CVMX_IPD_2nd_NEXT_PTR_BACK,second_back_struct.u64); + + wqe_pool.u64 = 0; + wqe_pool.s.wqe_pool = wqe_fpa_pool; + cvmx_write_csr(CVMX_IPD_WQE_FPA_QUEUE, wqe_pool.u64); + + ipd_ctl_reg.u64 = cvmx_read_csr(CVMX_IPD_CTL_STATUS); + ipd_ctl_reg.s.opc_mode = cache_mode; + ipd_ctl_reg.s.pbp_en = back_pres_enable_flag; + cvmx_write_csr(CVMX_IPD_CTL_STATUS, ipd_ctl_reg.u64); + + /* Note: the example RED code that used to be here has been moved to + cvmx_helper_setup_red */ +} + + +/** + * Enable IPD + */ +static inline void cvmx_ipd_enable(void) +{ + cvmx_ipd_ctl_status_t ipd_reg; + + ipd_reg.u64 = cvmx_read_csr(CVMX_IPD_CTL_STATUS); + + /* + * busy-waiting for rst_done in o68 + */ + if (OCTEON_IS_MODEL(OCTEON_CN68XX)) + while(ipd_reg.s.rst_done != 0) + ipd_reg.u64 = cvmx_read_csr(CVMX_IPD_CTL_STATUS); + + if (ipd_reg.s.ipd_en) + cvmx_dprintf("Warning: Enabling IPD when IPD already enabled.\n"); + + ipd_reg.s.ipd_en = 1; + +#if CVMX_ENABLE_LEN_M8_FIX + if(!OCTEON_IS_MODEL(OCTEON_CN38XX_PASS2)) + ipd_reg.s.len_m8 = 1; +#endif + + cvmx_write_csr(CVMX_IPD_CTL_STATUS, ipd_reg.u64); +} + + +/** + * Disable IPD + */ +static inline void cvmx_ipd_disable(void) +{ + cvmx_ipd_ctl_status_t ipd_reg; + ipd_reg.u64 = cvmx_read_csr(CVMX_IPD_CTL_STATUS); + ipd_reg.s.ipd_en = 0; + cvmx_write_csr(CVMX_IPD_CTL_STATUS, ipd_reg.u64); +} + +extern void __cvmx_ipd_free_ptr(void); + +#ifdef __cplusplus +} +#endif + +#endif /* __CVMX_IPD_H__ */ |
