[PATCH v2 14/52] mips: octeon: Add cvmx-helper-ipd.c

[Stefan Roese <sr@denx.de>]

From: Aaron Williams <awilliams@marvell.com>

Import cvmx-helper-ipd.c from 2013 U-Boot. It will be used by the later
added drivers to support networking on the MIPS Octeon II / III
platforms.

Signed-off-by: Aaron Williams <awilliams@marvell.com>
Signed-off-by: Stefan Roese <sr@denx.de>
---
 arch/mips/mach-octeon/cvmx-helper-ipd.c | 286 ++++++++++++++++++++++++
 1 file changed, 286 insertions(+)
 create mode 100644 arch/mips/mach-octeon/cvmx-helper-ipd.c

diff --git a/arch/mips/mach-octeon/cvmx-helper-ipd.c b/arch/mips/mach-octeon/cvmx-helper-ipd.c
new file mode 100644
index 000000000000..cb04b63b9b07
--- /dev/null
+++ b/arch/mips/mach-octeon/cvmx-helper-ipd.c
@@ -0,0 +1,286 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2018-2022 Marvell International Ltd.
+ *
+ * IPD helper functions.
+ */
+
+#include <errno.h>
+#include <log.h>
+#include <time.h>
+#include <linux/delay.h>
+
+#include <mach/cvmx-regs.h>
+#include <mach/cvmx-csr.h>
+#include <mach/cvmx-bootmem.h>
+#include <mach/octeon-model.h>
+#include <mach/cvmx-fuse.h>
+#include <mach/octeon-feature.h>
+#include <mach/cvmx-qlm.h>
+#include <mach/octeon_qlm.h>
+#include <mach/cvmx-pcie.h>
+#include <mach/cvmx-coremask.h>
+#include <mach/cvmx-range.h>
+#include <mach/cvmx-global-resources.h>
+
+#include <mach/cvmx-agl-defs.h>
+#include <mach/cvmx-bgxx-defs.h>
+#include <mach/cvmx-ciu-defs.h>
+#include <mach/cvmx-gmxx-defs.h>
+#include <mach/cvmx-gserx-defs.h>
+#include <mach/cvmx-ilk-defs.h>
+#include <mach/cvmx-ipd-defs.h>
+#include <mach/cvmx-pcsx-defs.h>
+#include <mach/cvmx-pcsxx-defs.h>
+#include <mach/cvmx-pki-defs.h>
+#include <mach/cvmx-pko-defs.h>
+#include <mach/cvmx-xcv-defs.h>
+
+#include <mach/cvmx-hwpko.h>
+#include <mach/cvmx-ilk.h>
+#include <mach/cvmx-ipd.h>
+#include <mach/cvmx-pki.h>
+#include <mach/cvmx-pko3.h>
+#include <mach/cvmx-pko3-queue.h>
+#include <mach/cvmx-pko3-resources.h>
+#include <mach/cvmx-pip.h>
+
+#include <mach/cvmx-helper.h>
+#include <mach/cvmx-helper-board.h>
+#include <mach/cvmx-helper-cfg.h>
+
+#include <mach/cvmx-helper-bgx.h>
+#include <mach/cvmx-helper-cfg.h>
+#include <mach/cvmx-helper-util.h>
+#include <mach/cvmx-helper-pki.h>
+
+/** It allocate pools for packet and wqe pools
+ * and sets up the FPA hardware
+ */
+int __cvmx_helper_ipd_setup_fpa_pools(void)
+{
+	cvmx_fpa_global_initialize();
+	if (cvmx_ipd_cfg.packet_pool.buffer_count == 0)
+		return 0;
+	__cvmx_helper_initialize_fpa_pool(cvmx_ipd_cfg.packet_pool.pool_num,
+					  cvmx_ipd_cfg.packet_pool.buffer_size,
+					  cvmx_ipd_cfg.packet_pool.buffer_count,
+					  "Packet Buffers");
+	if (cvmx_ipd_cfg.wqe_pool.buffer_count == 0)
+		return 0;
+	__cvmx_helper_initialize_fpa_pool(cvmx_ipd_cfg.wqe_pool.pool_num,
+					  cvmx_ipd_cfg.wqe_pool.buffer_size,
+					  cvmx_ipd_cfg.wqe_pool.buffer_count,
+					  "WQE Buffers");
+	return 0;
+}
+
+/**
+ * @INTERNAL
+ * Setup global setting for IPD/PIP not related to a specific
+ * interface or port. This must be called before IPD is enabled.
+ *
+ * @return Zero on success, negative on failure.
+ */
+int __cvmx_helper_ipd_global_setup(void)
+{
+	/* Setup the packet and wqe pools*/
+	__cvmx_helper_ipd_setup_fpa_pools();
+	/* Setup the global packet input options */
+	cvmx_ipd_config(cvmx_ipd_cfg.packet_pool.buffer_size / 8,
+			cvmx_ipd_cfg.first_mbuf_skip / 8,
+			cvmx_ipd_cfg.not_first_mbuf_skip / 8,
+			/* The +8 is to account for the next ptr */
+			(cvmx_ipd_cfg.first_mbuf_skip + 8) / 128,
+			/* The +8 is to account for the next ptr */
+			(cvmx_ipd_cfg.not_first_mbuf_skip + 8) / 128,
+			cvmx_ipd_cfg.wqe_pool.pool_num,
+			(cvmx_ipd_mode_t)(cvmx_ipd_cfg.cache_mode), 1);
+	return 0;
+}
+
+/**
+ * Enable or disable FCS stripping for all the ports on an interface.
+ *
+ * @param xiface
+ * @param nports number of ports
+ * @param has_fcs 0 for disable and !0 for enable
+ */
+static int cvmx_helper_fcs_op(int xiface, int nports, int has_fcs)
+{
+	u64 port_bit;
+	int index;
+	int pknd;
+	union cvmx_pip_sub_pkind_fcsx pkind_fcsx;
+	union cvmx_pip_prt_cfgx port_cfg;
+	struct cvmx_xiface xi = cvmx_helper_xiface_to_node_interface(xiface);
+
+	if (!octeon_has_feature(OCTEON_FEATURE_PKND))
+		return 0;
+	if (octeon_has_feature(OCTEON_FEATURE_PKI)) {
+		cvmx_helper_pki_set_fcs_op(xi.node, xi.interface, nports,
+					   has_fcs);
+		return 0;
+	}
+
+	port_bit = 0;
+	for (index = 0; index < nports; index++)
+		port_bit |= ((u64)1 << cvmx_helper_get_pknd(xiface, index));
+
+	pkind_fcsx.u64 = csr_rd(CVMX_PIP_SUB_PKIND_FCSX(0));
+	if (has_fcs)
+		pkind_fcsx.s.port_bit |= port_bit;
+	else
+		pkind_fcsx.s.port_bit &= ~port_bit;
+	csr_wr(CVMX_PIP_SUB_PKIND_FCSX(0), pkind_fcsx.u64);
+
+	for (pknd = 0; pknd < 64; pknd++) {
+		if ((1ull << pknd) & port_bit) {
+			port_cfg.u64 = csr_rd(CVMX_PIP_PRT_CFGX(pknd));
+			port_cfg.s.crc_en = (has_fcs) ? 1 : 0;
+			csr_wr(CVMX_PIP_PRT_CFGX(pknd), port_cfg.u64);
+		}
+	}
+
+	return 0;
+}
+
+/**
+ * @INTERNAL
+ * Configure the IPD/PIP tagging and QoS options for a specific
+ * port. This function determines the POW work queue entry
+ * contents for a port. The setup performed here is controlled by
+ * the defines in executive-config.h.
+ *
+ * @param ipd_port Port/Port kind to configure. This follows the IPD numbering,
+ *                 not the per interface numbering
+ *
+ * @return Zero on success, negative on failure
+ */
+static int __cvmx_helper_ipd_port_setup(int ipd_port)
+{
+	union cvmx_pip_prt_cfgx port_config;
+	union cvmx_pip_prt_tagx tag_config;
+
+	if (octeon_has_feature(OCTEON_FEATURE_PKND)) {
+		int xiface, index, pknd;
+		union cvmx_pip_prt_cfgbx prt_cfgbx;
+
+		xiface = cvmx_helper_get_interface_num(ipd_port);
+		index = cvmx_helper_get_interface_index_num(ipd_port);
+		pknd = cvmx_helper_get_pknd(xiface, index);
+
+		port_config.u64 = csr_rd(CVMX_PIP_PRT_CFGX(pknd));
+		tag_config.u64 = csr_rd(CVMX_PIP_PRT_TAGX(pknd));
+
+		port_config.s.qos = pknd & 0x7;
+
+		/* Default BPID to use for packets on this port-kind */
+		prt_cfgbx.u64 = csr_rd(CVMX_PIP_PRT_CFGBX(pknd));
+		prt_cfgbx.s.bpid = pknd;
+		csr_wr(CVMX_PIP_PRT_CFGBX(pknd), prt_cfgbx.u64);
+	} else {
+		port_config.u64 = csr_rd(CVMX_PIP_PRT_CFGX(ipd_port));
+		tag_config.u64 = csr_rd(CVMX_PIP_PRT_TAGX(ipd_port));
+
+		/* Have each port go to a different POW queue */
+		port_config.s.qos = ipd_port & 0x7;
+	}
+
+	/* Process the headers and place the IP header in the work queue */
+	port_config.s.mode =
+		(cvmx_pip_port_parse_mode_t)cvmx_ipd_cfg.port_config.parse_mode;
+
+	tag_config.s.ip6_src_flag =
+		cvmx_ipd_cfg.port_config.tag_fields.ipv6_src_ip;
+	tag_config.s.ip6_dst_flag =
+		cvmx_ipd_cfg.port_config.tag_fields.ipv6_dst_ip;
+	tag_config.s.ip6_sprt_flag =
+		cvmx_ipd_cfg.port_config.tag_fields.ipv6_src_port;
+	tag_config.s.ip6_dprt_flag =
+		cvmx_ipd_cfg.port_config.tag_fields.ipv6_dst_port;
+	tag_config.s.ip6_nxth_flag =
+		cvmx_ipd_cfg.port_config.tag_fields.ipv6_next_header;
+	tag_config.s.ip4_src_flag =
+		cvmx_ipd_cfg.port_config.tag_fields.ipv4_src_ip;
+	tag_config.s.ip4_dst_flag =
+		cvmx_ipd_cfg.port_config.tag_fields.ipv4_dst_ip;
+	tag_config.s.ip4_sprt_flag =
+		cvmx_ipd_cfg.port_config.tag_fields.ipv4_src_port;
+	tag_config.s.ip4_dprt_flag =
+		cvmx_ipd_cfg.port_config.tag_fields.ipv4_dst_port;
+	tag_config.s.ip4_pctl_flag =
+		cvmx_ipd_cfg.port_config.tag_fields.ipv4_protocol;
+	tag_config.s.inc_prt_flag =
+		cvmx_ipd_cfg.port_config.tag_fields.input_port;
+	tag_config.s.tcp6_tag_type =
+		(cvmx_pow_tag_type_t)cvmx_ipd_cfg.port_config.tag_type;
+	tag_config.s.tcp4_tag_type =
+		(cvmx_pow_tag_type_t)cvmx_ipd_cfg.port_config.tag_type;
+	tag_config.s.ip6_tag_type =
+		(cvmx_pow_tag_type_t)cvmx_ipd_cfg.port_config.tag_type;
+	tag_config.s.ip4_tag_type =
+		(cvmx_pow_tag_type_t)cvmx_ipd_cfg.port_config.tag_type;
+	tag_config.s.non_tag_type =
+		(cvmx_pow_tag_type_t)cvmx_ipd_cfg.port_config.tag_type;
+
+	/* Put all packets in group 0. Other groups can be used by the app */
+	tag_config.s.grp = 0;
+
+	cvmx_pip_config_port(ipd_port, port_config, tag_config);
+
+	/* Give the user a chance to override our setting for each port */
+	if (cvmx_override_ipd_port_setup)
+		cvmx_override_ipd_port_setup(ipd_port);
+
+	return 0;
+}
+
+/**
+ * @INTERNAL
+ * Setup the IPD/PIP for the ports on an interface. Packet
+ * classification and tagging are set for every port on the
+ * interface. The number of ports on the interface must already
+ * have been probed.
+ *
+ * @param xiface to setup IPD/PIP for
+ *
+ * @return Zero on success, negative on failure
+ */
+int __cvmx_helper_ipd_setup_interface(int xiface)
+{
+	cvmx_helper_interface_mode_t mode;
+	int num_ports = cvmx_helper_ports_on_interface(xiface);
+	struct cvmx_xiface xi = cvmx_helper_xiface_to_node_interface(xiface);
+	int ipd_port = cvmx_helper_get_ipd_port(xiface, 0);
+	int delta;
+
+	if (num_ports == CVMX_HELPER_CFG_INVALID_VALUE)
+		return 0;
+
+	delta = 1;
+	if (octeon_has_feature(OCTEON_FEATURE_PKND)) {
+		if (xi.interface < CVMX_HELPER_MAX_GMX)
+			delta = 16;
+	}
+
+	while (num_ports--) {
+		if (!cvmx_helper_is_port_valid(xiface, num_ports))
+			continue;
+		if (octeon_has_feature(OCTEON_FEATURE_PKI))
+			__cvmx_helper_pki_port_setup(xi.node, ipd_port);
+		else
+			__cvmx_helper_ipd_port_setup(ipd_port);
+		ipd_port += delta;
+	}
+	/* FCS settings */
+	cvmx_helper_fcs_op(xiface, cvmx_helper_ports_on_interface(xiface),
+			   __cvmx_helper_get_has_fcs(xiface));
+
+	mode = cvmx_helper_interface_get_mode(xiface);
+
+	if (mode == CVMX_HELPER_INTERFACE_MODE_LOOP)
+		__cvmx_helper_loop_enable(xiface);
+
+	return 0;
+}
-- 
2.35.1