summaryrefslogtreecommitdiffstats
path: root/arch/mips/include/asm/octeon/cvmx-ipd.h
diff options
context:
space:
mode:
Diffstat (limited to 'arch/mips/include/asm/octeon/cvmx-ipd.h')
-rw-r--r--arch/mips/include/asm/octeon/cvmx-ipd.h338
1 files changed, 338 insertions, 0 deletions
diff --git a/arch/mips/include/asm/octeon/cvmx-ipd.h b/arch/mips/include/asm/octeon/cvmx-ipd.h
new file mode 100644
index 00000000000..115a552c5c7
--- /dev/null
+++ b/arch/mips/include/asm/octeon/cvmx-ipd.h
@@ -0,0 +1,338 @@
+/***********************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__ */