aboutsummaryrefslogtreecommitdiffstats
path: root/cvmx-ipd.c
diff options
context:
space:
mode:
Diffstat (limited to 'cvmx-ipd.c')
-rw-r--r--cvmx-ipd.c314
1 files changed, 314 insertions, 0 deletions
diff --git a/cvmx-ipd.c b/cvmx-ipd.c
new file mode 100644
index 000000000000..1b0cf50e86a7
--- /dev/null
+++ b/cvmx-ipd.c
@@ -0,0 +1,314 @@
+/***********************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
+ *
+ * IPD Support.
+ *
+ * <hr>$Revision: 58943 $<hr>
+ */
+#ifdef CVMX_BUILD_FOR_LINUX_KERNEL
+#include <linux/module.h>
+#include <asm/octeon/cvmx.h>
+#include <asm/octeon/cvmx-config.h>
+#include <asm/octeon/cvmx-bootmem.h>
+#include <asm/octeon/cvmx-pip-defs.h>
+#include <asm/octeon/cvmx-dbg-defs.h>
+#include <asm/octeon/cvmx-sso-defs.h>
+
+#include <asm/octeon/cvmx-fpa.h>
+#include <asm/octeon/cvmx-wqe.h>
+#include <asm/octeon/cvmx-ipd.h>
+#include <asm/octeon/cvmx-clock.h>
+#include <asm/octeon/cvmx-helper-errata.h>
+#include <asm/octeon/cvmx-helper-cfg.h>
+#else
+#include "executive-config.h"
+#include "cvmx.h"
+#include "cvmx-sysinfo.h"
+#include "cvmx-bootmem.h"
+#include "cvmx-version.h"
+#include "cvmx-helper-check-defines.h"
+#include "cvmx-error.h"
+#include "cvmx-config.h"
+
+#include "cvmx-fpa.h"
+#include "cvmx-wqe.h"
+#include "cvmx-ipd.h"
+#include "cvmx-helper-errata.h"
+#include "cvmx-helper-cfg.h"
+#endif
+
+#ifdef CVMX_ENABLE_PKO_FUNCTIONS
+static void __cvmx_ipd_free_ptr_v1(void)
+{
+ /* Only CN38XXp{1,2} cannot read pointer out of the IPD */
+ if (!OCTEON_IS_MODEL(OCTEON_CN38XX_PASS2)) {
+ int no_wptr = 0;
+ cvmx_ipd_ptr_count_t 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)) {
+ cvmx_ipd_ctl_status_t 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) {
+ cvmx_ipd_wqe_ptr_valid_t 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;
+ cvmx_ipd_pwp_ptr_fifo_ctl_t 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) {
+ cvmx_ipd_pkt_ptr_valid_t ipd_pkt_ptr_valid;
+ ipd_pkt_ptr_valid.u64 = cvmx_read_csr(CVMX_IPD_PKT_PTR_VALID);
+ cvmx_fpa_free(cvmx_phys_to_ptr((uint64_t)ipd_pkt_ptr_valid.s.ptr<<7), CVMX_FPA_PACKET_POOL, 0);
+ }
+
+ /* Free the per port prefetched packets */
+ if (1) {
+ int i;
+ cvmx_ipd_prc_port_ptr_fifo_ctl_t 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;
+ cvmx_ipd_prc_hold_ptr_fifo_ctl_t 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;
+ cvmx_ipd_pwp_ptr_fifo_ctl_t 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);
+ }
+ }
+}
+
+static void __cvmx_ipd_free_ptr_v2(void)
+{
+ int no_wptr = 0;
+ int i;
+ cvmx_ipd_port_ptr_fifo_ctl_t ipd_port_ptr_fifo_ctl;
+ cvmx_ipd_ptr_count_t ipd_ptr_count;
+ ipd_ptr_count.u64 = cvmx_read_csr(CVMX_IPD_PTR_COUNT);
+
+ /* Handle Work Queue Entry in cn68xx */
+ if (octeon_has_feature(OCTEON_FEATURE_NO_WPTR)) {
+ cvmx_ipd_ctl_status_t 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) {
+ cvmx_ipd_next_wqe_ptr_t ipd_next_wqe_ptr;
+ ipd_next_wqe_ptr.u64 = cvmx_read_csr(CVMX_IPD_NEXT_WQE_PTR);
+ if (no_wptr)
+ cvmx_fpa_free(cvmx_phys_to_ptr((uint64_t)ipd_next_wqe_ptr.s.ptr<<7), CVMX_FPA_PACKET_POOL, 0);
+ else
+ cvmx_fpa_free(cvmx_phys_to_ptr((uint64_t)ipd_next_wqe_ptr.s.ptr<<7), CVMX_FPA_WQE_POOL, 0);
+ }
+
+
+ /* Free all WQE in the fifo */
+ if (ipd_ptr_count.s.wqe_pcnt) {
+ cvmx_ipd_free_ptr_fifo_ctl_t ipd_free_ptr_fifo_ctl;
+ cvmx_ipd_free_ptr_value_t ipd_free_ptr_value;
+ ipd_free_ptr_fifo_ctl.u64 = cvmx_read_csr(CVMX_IPD_FREE_PTR_FIFO_CTL);
+ for (i = 0; i < ipd_ptr_count.s.wqe_pcnt; i++) {
+ ipd_free_ptr_fifo_ctl.s.cena = 0;
+ ipd_free_ptr_fifo_ctl.s.raddr = ipd_free_ptr_fifo_ctl.s.max_cnts + (ipd_free_ptr_fifo_ctl.s.wraddr+i) % ipd_free_ptr_fifo_ctl.s.max_cnts;
+ cvmx_write_csr(CVMX_IPD_FREE_PTR_FIFO_CTL, ipd_free_ptr_fifo_ctl.u64);
+ ipd_free_ptr_fifo_ctl.u64 = cvmx_read_csr(CVMX_IPD_FREE_PTR_FIFO_CTL);
+ ipd_free_ptr_value.u64 = cvmx_read_csr(CVMX_IPD_FREE_PTR_VALUE);
+ if (no_wptr)
+ cvmx_fpa_free(cvmx_phys_to_ptr((uint64_t)ipd_free_ptr_value.s.ptr<<7), CVMX_FPA_PACKET_POOL, 0);
+ else
+ cvmx_fpa_free(cvmx_phys_to_ptr((uint64_t)ipd_free_ptr_value.s.ptr<<7), CVMX_FPA_WQE_POOL, 0);
+ }
+ ipd_free_ptr_fifo_ctl.s.cena = 1;
+ cvmx_write_csr(CVMX_IPD_FREE_PTR_FIFO_CTL, ipd_free_ptr_fifo_ctl.u64);
+ }
+
+ /* Free the prefetched packet */
+ if (ipd_ptr_count.s.pktv_cnt) {
+ cvmx_ipd_next_pkt_ptr_t ipd_next_pkt_ptr;
+ ipd_next_pkt_ptr.u64 = cvmx_read_csr(CVMX_IPD_NEXT_PKT_PTR);
+ cvmx_fpa_free(cvmx_phys_to_ptr((uint64_t)ipd_next_pkt_ptr.s.ptr<<7), CVMX_FPA_PACKET_POOL, 0);
+ }
+
+ /* Free the per port prefetched packets */
+ ipd_port_ptr_fifo_ctl.u64 = cvmx_read_csr(CVMX_IPD_PORT_PTR_FIFO_CTL);
+
+ for (i = 0; i < ipd_port_ptr_fifo_ctl.s.max_pkt; i++) {
+ ipd_port_ptr_fifo_ctl.s.cena = 0;
+ ipd_port_ptr_fifo_ctl.s.raddr = i % ipd_port_ptr_fifo_ctl.s.max_pkt;
+ cvmx_write_csr(CVMX_IPD_PORT_PTR_FIFO_CTL, ipd_port_ptr_fifo_ctl.u64);
+ ipd_port_ptr_fifo_ctl.u64 = cvmx_read_csr(CVMX_IPD_PORT_PTR_FIFO_CTL);
+ cvmx_fpa_free(cvmx_phys_to_ptr((uint64_t)ipd_port_ptr_fifo_ctl.s.ptr<<7), CVMX_FPA_PACKET_POOL, 0);
+ }
+ ipd_port_ptr_fifo_ctl.s.cena = 1;
+ cvmx_write_csr(CVMX_IPD_PORT_PTR_FIFO_CTL, ipd_port_ptr_fifo_ctl.u64);
+
+ /* Free all packets in the holding fifo */
+ if (ipd_ptr_count.s.pfif_cnt) {
+ cvmx_ipd_hold_ptr_fifo_ctl_t ipd_hold_ptr_fifo_ctl;
+
+ ipd_hold_ptr_fifo_ctl.u64 = cvmx_read_csr(CVMX_IPD_HOLD_PTR_FIFO_CTL);
+
+ for (i = 0; i < ipd_ptr_count.s.pfif_cnt; i++) {
+ ipd_hold_ptr_fifo_ctl.s.cena = 0;
+ ipd_hold_ptr_fifo_ctl.s.raddr = (ipd_hold_ptr_fifo_ctl.s.praddr + i) % ipd_hold_ptr_fifo_ctl.s.max_pkt;
+ cvmx_write_csr(CVMX_IPD_HOLD_PTR_FIFO_CTL, ipd_hold_ptr_fifo_ctl.u64);
+ ipd_hold_ptr_fifo_ctl.u64 = cvmx_read_csr(CVMX_IPD_HOLD_PTR_FIFO_CTL);
+ cvmx_fpa_free(cvmx_phys_to_ptr((uint64_t)ipd_hold_ptr_fifo_ctl.s.ptr<<7), CVMX_FPA_PACKET_POOL, 0);
+ }
+ ipd_hold_ptr_fifo_ctl.s.cena = 1;
+ cvmx_write_csr(CVMX_IPD_HOLD_PTR_FIFO_CTL, ipd_hold_ptr_fifo_ctl.u64);
+ }
+
+ /* Free all packets in the fifo */
+ if (ipd_ptr_count.s.pkt_pcnt) {
+ cvmx_ipd_free_ptr_fifo_ctl_t ipd_free_ptr_fifo_ctl;
+ cvmx_ipd_free_ptr_value_t ipd_free_ptr_value;
+ ipd_free_ptr_fifo_ctl.u64 = cvmx_read_csr(CVMX_IPD_FREE_PTR_FIFO_CTL);
+
+ for (i = 0; i < ipd_ptr_count.s.pkt_pcnt; i++) {
+ ipd_free_ptr_fifo_ctl.s.cena = 0;
+ ipd_free_ptr_fifo_ctl.s.raddr = (ipd_free_ptr_fifo_ctl.s.praddr+i) % ipd_free_ptr_fifo_ctl.s.max_cnts;
+ cvmx_write_csr(CVMX_IPD_FREE_PTR_FIFO_CTL, ipd_free_ptr_fifo_ctl.u64);
+ ipd_free_ptr_fifo_ctl.u64 = cvmx_read_csr(CVMX_IPD_FREE_PTR_FIFO_CTL);
+ ipd_free_ptr_value.u64 = cvmx_read_csr(CVMX_IPD_FREE_PTR_VALUE);
+ cvmx_fpa_free(cvmx_phys_to_ptr((uint64_t)ipd_free_ptr_value.s.ptr<<7), CVMX_FPA_PACKET_POOL, 0);
+ }
+ ipd_free_ptr_fifo_ctl.s.cena = 1;
+ cvmx_write_csr(CVMX_IPD_FREE_PTR_FIFO_CTL, ipd_free_ptr_fifo_ctl.u64);
+ }
+}
+
+/**
+ * @INTERNAL
+ * This function is called by cvmx_helper_shutdown() to extract
+ * all FPA buffers out of the IPD and PIP. After this function
+ * completes, all FPA buffers that were prefetched by IPD and PIP
+ * wil be in the apropriate FPA pool. This functions does not reset
+ * PIP or IPD as FPA pool zero must be empty before the reset can
+ * be performed. WARNING: It is very important that IPD and PIP be
+ * reset soon after a call to this function.
+ */
+void __cvmx_ipd_free_ptr(void)
+{
+ if (octeon_has_feature(OCTEON_FEATURE_PKND))
+ __cvmx_ipd_free_ptr_v2();
+ else
+ __cvmx_ipd_free_ptr_v1();
+}
+
+#endif
+