From: Aaron Williams <awilli...@marvell.com>
Import cvmx-helper-pko.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 <awilli...@marvell.com>
Signed-off-by: Stefan Roese <s...@denx.de>
---
arch/mips/mach-octeon/cvmx-helper-pko.c | 312 ++++++++++++++++++++++++
1 file changed, 312 insertions(+)
create mode 100644 arch/mips/mach-octeon/cvmx-helper-pko.c
diff --git a/arch/mips/mach-octeon/cvmx-helper-pko.c
b/arch/mips/mach-octeon/cvmx-helper-pko.c
new file mode 100644
index 000000000000..0dc7980b25f2
--- /dev/null
+++ b/arch/mips/mach-octeon/cvmx-helper-pko.c
@@ -0,0 +1,312 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2018-2022 Marvell International Ltd.
+ *
+ * Helper Functions for the PKO
+ */
+
+#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-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>
+
+static s64 pko_fpa_config_pool = -1;
+static u64 pko_fpa_config_size = 1024;
+static u64 pko_fpa_config_count;
+
+/**
+ * cvmx_override_pko_queue_priority(int pko_port, u64
+ * priorities[16]) is a function pointer. It is meant to allow
+ * customization of the PKO queue priorities based on the port
+ * number. Users should set this pointer to a function before
+ * calling any cvmx-helper operations.
+ */
+void (*cvmx_override_pko_queue_priority)(int ipd_port,
+ uint8_t *priorities) = NULL;
+
+void cvmx_pko_set_cmd_que_pool_config(s64 pool, u64 buffer_size,
+ u64 buffer_count)
+{
+ pko_fpa_config_pool = pool;
+ pko_fpa_config_size = buffer_size;
+ pko_fpa_config_count = buffer_count;
+}
+
+void cvmx_pko_set_cmd_queue_pool_buffer_count(u64 buffer_count)
+{
+ pko_fpa_config_count = buffer_count;
+}
+
+void cvmx_pko_get_cmd_que_pool_config(cvmx_fpa_pool_config_t *pko_pool)
+{
+ pko_pool->pool_num = pko_fpa_config_pool;
+ pko_pool->buffer_size = pko_fpa_config_size;
+ pko_pool->buffer_count = pko_fpa_config_count;
+}
+
+int64_t cvmx_fpa_get_pko_pool(void)
+{
+ return pko_fpa_config_pool;
+}
+
+/**
+ * Gets the buffer size of pko pool
+ */
+u64 cvmx_fpa_get_pko_pool_block_size(void)
+{
+ return pko_fpa_config_size;
+}
+
+/**
+ * Gets the buffer size of pko pool
+ */
+u64 cvmx_fpa_get_pko_pool_buffer_count(void)
+{
+ return pko_fpa_config_count;
+}
+
+/**
+ * Initialize PKO command queue buffer pool
+ */
+static int cvmx_helper_pko_pool_init(void)
+{
+ u8 pool;
+ unsigned int buf_count;
+ unsigned int pkt_buf_count;
+ int rc;
+
+ /* Reserve pool */
+ pool = cvmx_fpa_get_pko_pool();
+
+ /* Avoid redundant pool creation */
+ if (cvmx_fpa_get_block_size(pool) > 0) {
+#ifdef DEBUG
+ debug("WARNING: %s: pool %d already initialized\n", __func__,
+ pool);
+#endif
+ /* It is up to the app to have sufficient buffer count */
+ return pool;
+ }
+
+ /* Calculate buffer count: one per queue + 3-word-cmds * max_pkts */
+ pkt_buf_count = cvmx_fpa_get_packet_pool_buffer_count();
+ buf_count = CVMX_PKO_MAX_OUTPUT_QUEUES + (pkt_buf_count * 3) / 8;
+
+ /* Allocate pools for pko command queues */
+ rc = __cvmx_helper_initialize_fpa_pool(pool,
+
cvmx_fpa_get_pko_pool_block_size(),
+ buf_count, "PKO Cmd-bufs");
+
+ if (rc < 0)
+ debug("%s: ERROR: in PKO buffer pool\n", __func__);
+
+ pool = rc;
+ return pool;
+}
+
+/**
+ * Initialize the PKO
+ *
+ */
+int cvmx_helper_pko_init(void)
+{
+ int rc;
+
+ rc = cvmx_helper_pko_pool_init();
+ if (rc < 0)
+ return rc;
+
+ __cvmx_helper_init_port_config_data(0);
+
+ cvmx_pko_hw_init(cvmx_fpa_get_pko_pool(),
+ cvmx_fpa_get_pko_pool_block_size());
+ return 0;
+}
+
+/**
+ * @INTERNAL
+ * Setup the PKO for the ports on an interface. The number of
+ * queues per port and the priority of each PKO output queue
+ * is set here. PKO must be disabled when this function is called.
+ *
+ * @param interface to setup PKO for
+ *
+ * @return Zero on success, negative on failure
+ *
+ * @note This is for PKO1/PKO2, and is not used for PKO3.
+ */
+int __cvmx_helper_interface_setup_pko(int interface)
+{
+ /*
+ * Each packet output queue has an associated priority. The
+ * higher the priority, the more often it can send a packet. A
+ * priority of 8 means it can send in all 8 rounds of
+ * contention. We're going to make each queue one less than
+ * the last. The vector of priorities has been extended to
+ * support CN5xxx CPUs, where up to 16 queues can be
+ * associated to a port. To keep backward compatibility we
+ * don't change the initial 8 priorities and replicate them in
+ * the second half. With per-core PKO queues (PKO lockless
+ * operation) all queues have the same priority.
+ */
+ /* uint8_t priorities[16] = {8,7,6,5,4,3,2,1,8,7,6,5,4,3,2,1}; */
+ u8 priorities[16] = { [0 ... 15] = 8 };
+
+ /*
+ * Setup the IPD/PIP and PKO for the ports discovered
+ * above. Here packet classification, tagging and output
+ * priorities are set.
+ */
+ int num_ports = cvmx_helper_ports_on_interface(interface);
+
+ while (num_ports--) {
+ int ipd_port;
+
+ if (!cvmx_helper_is_port_valid(interface, num_ports))
+ continue;
+
+ ipd_port = cvmx_helper_get_ipd_port(interface, num_ports);
+ /*
+ * Give the user a chance to override the per queue
+ * priorities.
+ */
+ if (cvmx_override_pko_queue_priority)
+ cvmx_override_pko_queue_priority(ipd_port, priorities);
+
+ cvmx_pko_config_port(ipd_port,
+ cvmx_pko_get_base_queue(ipd_port),
+ cvmx_pko_get_num_queues(ipd_port),
+ priorities);
+ ipd_port++;
+ }
+ return 0;
+ /* NOTE:
+ * Now this function is called for all chips including 68xx,
+ * but on the 68xx it does not enable multiple pko_iports per
+ * eport, while before it was doing 3 pko_iport per eport
+ * buf the reason for that is not clear.
+ */
+}
+
+/**
+ * wait for the pko queue to drain
+ *
+ * @param queue a valid pko queue
+ * @return count is the length of the queue after calling this
+ * function
+ */
+static int cvmx_helper_wait_pko_queue_drain(int queue)
+{
+ const int timeout = 5; /* Wait up to 5 seconds for timeouts */
+ int count;
+ u64 start_cycle;
+
+ count = cvmx_pko_queue_pend_count(queue);
+ if (count < 0)
+ return count;
+
+ start_cycle = get_timer(0);
+
+ while (count > 0 && (get_timer(start_cycle) < timeout * 1000)) {
+ mdelay(1);
+ count = cvmx_pko_queue_pend_count(queue);
+ }
+
+ return count;
+}
+
+/**
+ * @INTERNAL
+ *
+ * Drain and wait until all PKO queues are empty.
+ */
+int __cvmx_helper_pko_drain(void)
+{
+ int result = 0;
+
+ if (octeon_has_feature(OCTEON_FEATURE_PKND)) {
+ int queue, max_queue;
+
+ /* PKO2 */
+ max_queue = __cvmx_helper_cfg_pko_max_queue();
+ for (queue = 0; queue < max_queue; queue++) {
+ if (cvmx_helper_wait_pko_queue_drain(queue)) {
+ result = -1;
+ return result;
+ }
+ }
+ } else {
+ int num_interfaces = cvmx_helper_get_number_of_interfaces();
+ int interface, num_ports, index;
+
+ /* PKO1 */
+ for (interface = 0; interface < num_interfaces; interface++) {
+ num_ports = cvmx_helper_ports_on_interface(interface);
+ for (index = 0; index < num_ports; index++) {
+ int pko_port;
+ int queue;
+ int max_queue;
+
+ if (!cvmx_helper_is_port_valid(interface,
+ index))
+ continue;
+ pko_port = cvmx_helper_get_ipd_port(interface,
+ index);
+ queue = cvmx_pko_get_base_queue(pko_port);
+ max_queue = queue +
+ cvmx_pko_get_num_queues(pko_port);
+ while (queue < max_queue) {
+ if
(cvmx_helper_wait_pko_queue_drain(queue)) {
+ result = -1;
+ return result;
+ }
+ queue++;
+ }
+ }
+ }
+ }
+ return result;
+}
--
2.35.1
