diff options
Diffstat (limited to 'drivers/staging/octeon/cvmx-ipd.h')
| -rw-r--r-- | drivers/staging/octeon/cvmx-ipd.h | 338 |
1 files changed, 0 insertions, 338 deletions
diff --git a/drivers/staging/octeon/cvmx-ipd.h b/drivers/staging/octeon/cvmx-ipd.h deleted file mode 100644 index 115a552c5c7f..000000000000 --- a/drivers/staging/octeon/cvmx-ipd.h +++ /dev/null @@ -1,338 +0,0 @@ -/***********************license start*************** - * Author: Cavium Networks - * - * Contact: support@caviumnetworks.com - * This file is part of the OCTEON SDK - * - * Copyright (c) 2003-2008 Cavium Networks - * - * This file is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License, Version 2, as - * published by the Free Software Foundation. - * - * This file is distributed in the hope that it will be useful, but - * AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty - * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or - * NONINFRINGEMENT. See the GNU General Public License for more - * details. - * - * You should have received a copy of the GNU General Public License - * along with this file; if not, write to the Free Software - * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - * or visit http://www.gnu.org/licenses/. - * - * This file may also be available under a different license from Cavium. - * Contact Cavium Networks for more information - ***********************license end**************************************/ - -/** - * - * Interface to the hardware Input Packet Data unit. - */ - -#ifndef __CVMX_IPD_H__ -#define __CVMX_IPD_H__ - -#include <asm/octeon/octeon-feature.h> - -#include <asm/octeon/cvmx-ipd-defs.h> - -enum cvmx_ipd_mode { - CVMX_IPD_OPC_MODE_STT = 0LL, /* All blocks DRAM, not cached in L2 */ - CVMX_IPD_OPC_MODE_STF = 1LL, /* All bloccks into L2 */ - CVMX_IPD_OPC_MODE_STF1_STT = 2LL, /* 1st block L2, rest DRAM */ - CVMX_IPD_OPC_MODE_STF2_STT = 3LL /* 1st, 2nd blocks L2, rest DRAM */ -}; - -#ifndef CVMX_ENABLE_LEN_M8_FIX -#define CVMX_ENABLE_LEN_M8_FIX 0 -#endif - -/* CSR typedefs have been moved to cvmx-csr-*.h */ -typedef union cvmx_ipd_1st_mbuff_skip cvmx_ipd_mbuff_first_skip_t; -typedef union cvmx_ipd_1st_next_ptr_back cvmx_ipd_first_next_ptr_back_t; - -typedef cvmx_ipd_mbuff_first_skip_t cvmx_ipd_mbuff_not_first_skip_t; -typedef cvmx_ipd_first_next_ptr_back_t cvmx_ipd_second_next_ptr_back_t; - -/** - * Configure IPD - * - * @mbuff_size: Packets buffer size in 8 byte words - * @first_mbuff_skip: - * Number of 8 byte words to skip in the first buffer - * @not_first_mbuff_skip: - * Number of 8 byte words to skip in each following buffer - * @first_back: Must be same as first_mbuff_skip / 128 - * @second_back: - * Must be same as not_first_mbuff_skip / 128 - * @wqe_fpa_pool: - * FPA pool to get work entries from - * @cache_mode: - * @back_pres_enable_flag: - * Enable or disable port back pressure - */ -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, - enum cvmx_ipd_mode cache_mode, - uint64_t back_pres_enable_flag) -{ - cvmx_ipd_mbuff_first_skip_t first_skip; - cvmx_ipd_mbuff_not_first_skip_t not_first_skip; - union cvmx_ipd_packet_mbuff_size size; - cvmx_ipd_first_next_ptr_back_t first_back_struct; - cvmx_ipd_second_next_ptr_back_t second_back_struct; - union cvmx_ipd_wqe_fpa_queue wqe_pool; - union cvmx_ipd_ctl_status 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) -{ - union cvmx_ipd_ctl_status ipd_reg; - 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 = TRUE; -#endif - cvmx_write_csr(CVMX_IPD_CTL_STATUS, ipd_reg.u64); -} - -/** - * Disable IPD - */ -static inline void cvmx_ipd_disable(void) -{ - union cvmx_ipd_ctl_status 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); -} - -/** - * Supportive function for cvmx_fpa_shutdown_pool. - */ -static inline void cvmx_ipd_free_ptr(void) -{ - /* Only CN38XXp{1,2} cannot read pointer out of the IPD */ - if (!OCTEON_IS_MODEL(OCTEON_CN38XX_PASS1) - && !OCTEON_IS_MODEL(OCTEON_CN38XX_PASS2)) { - int no_wptr = 0; - union cvmx_ipd_ptr_count ipd_ptr_count; - ipd_ptr_count.u64 = cvmx_read_csr(CVMX_IPD_PTR_COUNT); - - /* Handle Work Queue Entry in cn56xx and cn52xx */ - if (octeon_has_feature(OCTEON_FEATURE_NO_WPTR)) { - union cvmx_ipd_ctl_status ipd_ctl_status; - ipd_ctl_status.u64 = cvmx_read_csr(CVMX_IPD_CTL_STATUS); - if (ipd_ctl_status.s.no_wptr) - no_wptr = 1; - } - - /* Free the prefetched WQE */ - if (ipd_ptr_count.s.wqev_cnt) { - union cvmx_ipd_wqe_ptr_valid ipd_wqe_ptr_valid; - ipd_wqe_ptr_valid.u64 = - cvmx_read_csr(CVMX_IPD_WQE_PTR_VALID); - if (no_wptr) - cvmx_fpa_free(cvmx_phys_to_ptr - ((uint64_t) ipd_wqe_ptr_valid.s. - ptr << 7), CVMX_FPA_PACKET_POOL, - 0); - else - cvmx_fpa_free(cvmx_phys_to_ptr - ((uint64_t) ipd_wqe_ptr_valid.s. - ptr << 7), CVMX_FPA_WQE_POOL, 0); - } - - /* Free all WQE in the fifo */ - if (ipd_ptr_count.s.wqe_pcnt) { - int i; - union cvmx_ipd_pwp_ptr_fifo_ctl ipd_pwp_ptr_fifo_ctl; - ipd_pwp_ptr_fifo_ctl.u64 = - cvmx_read_csr(CVMX_IPD_PWP_PTR_FIFO_CTL); - for (i = 0; i < ipd_ptr_count.s.wqe_pcnt; i++) { - ipd_pwp_ptr_fifo_ctl.s.cena = 0; - ipd_pwp_ptr_fifo_ctl.s.raddr = - ipd_pwp_ptr_fifo_ctl.s.max_cnts + - (ipd_pwp_ptr_fifo_ctl.s.wraddr + - i) % ipd_pwp_ptr_fifo_ctl.s.max_cnts; - cvmx_write_csr(CVMX_IPD_PWP_PTR_FIFO_CTL, - ipd_pwp_ptr_fifo_ctl.u64); - ipd_pwp_ptr_fifo_ctl.u64 = - cvmx_read_csr(CVMX_IPD_PWP_PTR_FIFO_CTL); - if (no_wptr) - cvmx_fpa_free(cvmx_phys_to_ptr - ((uint64_t) - ipd_pwp_ptr_fifo_ctl.s. - ptr << 7), - CVMX_FPA_PACKET_POOL, 0); - else - cvmx_fpa_free(cvmx_phys_to_ptr - ((uint64_t) - ipd_pwp_ptr_fifo_ctl.s. - ptr << 7), - CVMX_FPA_WQE_POOL, 0); - } - ipd_pwp_ptr_fifo_ctl.s.cena = 1; - cvmx_write_csr(CVMX_IPD_PWP_PTR_FIFO_CTL, - ipd_pwp_ptr_fifo_ctl.u64); - } - - /* Free the prefetched packet */ - if (ipd_ptr_count.s.pktv_cnt) { - union cvmx_ipd_pkt_ptr_valid ipd_pkt_ptr_valid; - ipd_pkt_ptr_valid.u64 = - cvmx_read_csr(CVMX_IPD_PKT_PTR_VALID); - cvmx_fpa_free(cvmx_phys_to_ptr - (ipd_pkt_ptr_valid.s.ptr << 7), - CVMX_FPA_PACKET_POOL, 0); - } - - /* Free the per port prefetched packets */ - if (1) { - int i; - union cvmx_ipd_prc_port_ptr_fifo_ctl - ipd_prc_port_ptr_fifo_ctl; - ipd_prc_port_ptr_fifo_ctl.u64 = - cvmx_read_csr(CVMX_IPD_PRC_PORT_PTR_FIFO_CTL); - - for (i = 0; i < ipd_prc_port_ptr_fifo_ctl.s.max_pkt; - i++) { - ipd_prc_port_ptr_fifo_ctl.s.cena = 0; - ipd_prc_port_ptr_fifo_ctl.s.raddr = - i % ipd_prc_port_ptr_fifo_ctl.s.max_pkt; - cvmx_write_csr(CVMX_IPD_PRC_PORT_PTR_FIFO_CTL, - ipd_prc_port_ptr_fifo_ctl.u64); - ipd_prc_port_ptr_fifo_ctl.u64 = - cvmx_read_csr - (CVMX_IPD_PRC_PORT_PTR_FIFO_CTL); - cvmx_fpa_free(cvmx_phys_to_ptr - ((uint64_t) - ipd_prc_port_ptr_fifo_ctl.s. - ptr << 7), CVMX_FPA_PACKET_POOL, - 0); - } - ipd_prc_port_ptr_fifo_ctl.s.cena = 1; - cvmx_write_csr(CVMX_IPD_PRC_PORT_PTR_FIFO_CTL, - ipd_prc_port_ptr_fifo_ctl.u64); - } - - /* Free all packets in the holding fifo */ - if (ipd_ptr_count.s.pfif_cnt) { - int i; - union cvmx_ipd_prc_hold_ptr_fifo_ctl - ipd_prc_hold_ptr_fifo_ctl; - - ipd_prc_hold_ptr_fifo_ctl.u64 = - cvmx_read_csr(CVMX_IPD_PRC_HOLD_PTR_FIFO_CTL); - - for (i = 0; i < ipd_ptr_count.s.pfif_cnt; i++) { - ipd_prc_hold_ptr_fifo_ctl.s.cena = 0; - ipd_prc_hold_ptr_fifo_ctl.s.raddr = - (ipd_prc_hold_ptr_fifo_ctl.s.praddr + - i) % ipd_prc_hold_ptr_fifo_ctl.s.max_pkt; - cvmx_write_csr(CVMX_IPD_PRC_HOLD_PTR_FIFO_CTL, - ipd_prc_hold_ptr_fifo_ctl.u64); - ipd_prc_hold_ptr_fifo_ctl.u64 = - cvmx_read_csr - (CVMX_IPD_PRC_HOLD_PTR_FIFO_CTL); - cvmx_fpa_free(cvmx_phys_to_ptr - ((uint64_t) - ipd_prc_hold_ptr_fifo_ctl.s. - ptr << 7), CVMX_FPA_PACKET_POOL, - 0); - } - ipd_prc_hold_ptr_fifo_ctl.s.cena = 1; - cvmx_write_csr(CVMX_IPD_PRC_HOLD_PTR_FIFO_CTL, - ipd_prc_hold_ptr_fifo_ctl.u64); - } - - /* Free all packets in the fifo */ - if (ipd_ptr_count.s.pkt_pcnt) { - int i; - union cvmx_ipd_pwp_ptr_fifo_ctl ipd_pwp_ptr_fifo_ctl; - ipd_pwp_ptr_fifo_ctl.u64 = - cvmx_read_csr(CVMX_IPD_PWP_PTR_FIFO_CTL); - - for (i = 0; i < ipd_ptr_count.s.pkt_pcnt; i++) { - ipd_pwp_ptr_fifo_ctl.s.cena = 0; - ipd_pwp_ptr_fifo_ctl.s.raddr = - (ipd_pwp_ptr_fifo_ctl.s.praddr + - i) % ipd_pwp_ptr_fifo_ctl.s.max_cnts; - cvmx_write_csr(CVMX_IPD_PWP_PTR_FIFO_CTL, - ipd_pwp_ptr_fifo_ctl.u64); - ipd_pwp_ptr_fifo_ctl.u64 = - cvmx_read_csr(CVMX_IPD_PWP_PTR_FIFO_CTL); - cvmx_fpa_free(cvmx_phys_to_ptr - ((uint64_t) ipd_pwp_ptr_fifo_ctl. - s.ptr << 7), - CVMX_FPA_PACKET_POOL, 0); - } - ipd_pwp_ptr_fifo_ctl.s.cena = 1; - cvmx_write_csr(CVMX_IPD_PWP_PTR_FIFO_CTL, - ipd_pwp_ptr_fifo_ctl.u64); - } - - /* Reset the IPD to get all buffers out of it */ - { - union cvmx_ipd_ctl_status ipd_ctl_status; - ipd_ctl_status.u64 = cvmx_read_csr(CVMX_IPD_CTL_STATUS); - ipd_ctl_status.s.reset = 1; - cvmx_write_csr(CVMX_IPD_CTL_STATUS, ipd_ctl_status.u64); - } - - /* Reset the PIP */ - { - union cvmx_pip_sft_rst pip_sft_rst; - pip_sft_rst.u64 = cvmx_read_csr(CVMX_PIP_SFT_RST); - pip_sft_rst.s.rst = 1; - cvmx_write_csr(CVMX_PIP_SFT_RST, pip_sft_rst.u64); - } - } -} - -#endif /* __CVMX_IPD_H__ */ |