^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Copyright (C) 2019 Texas Instruments Incorporated - http://www.ti.com
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * Author: Peter Ujfalusi <peter.ujfalusi@ti.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #include <linux/device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/mutex.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/of.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/sys_soc.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include "k3-psil-priv.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) static DEFINE_MUTEX(ep_map_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) static const struct psil_ep_map *soc_ep_map;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) static const struct soc_device_attribute k3_soc_devices[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) { .family = "AM65X", .data = &am654_ep_map },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) { .family = "J721E", .data = &j721e_ep_map },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) { .family = "J7200", .data = &j7200_ep_map },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) { /* sentinel */ }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) struct psil_endpoint_config *psil_get_ep_config(u32 thread_id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) mutex_lock(&ep_map_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) if (!soc_ep_map) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) const struct soc_device_attribute *soc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) soc = soc_device_match(k3_soc_devices);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) if (soc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) soc_ep_map = soc->data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) pr_err("PSIL: No compatible machine found for map\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) mutex_unlock(&ep_map_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) return ERR_PTR(-ENOTSUPP);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) pr_debug("%s: Using map for %s\n", __func__, soc_ep_map->name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) mutex_unlock(&ep_map_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) if (thread_id & K3_PSIL_DST_THREAD_ID_OFFSET && soc_ep_map->dst) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) /* check in destination thread map */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) for (i = 0; i < soc_ep_map->dst_count; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) if (soc_ep_map->dst[i].thread_id == thread_id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) return &soc_ep_map->dst[i].ep_config;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) thread_id &= ~K3_PSIL_DST_THREAD_ID_OFFSET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) if (soc_ep_map->src) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) for (i = 0; i < soc_ep_map->src_count; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) if (soc_ep_map->src[i].thread_id == thread_id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) return &soc_ep_map->src[i].ep_config;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) return ERR_PTR(-ENOENT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) EXPORT_SYMBOL_GPL(psil_get_ep_config);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) int psil_set_new_ep_config(struct device *dev, const char *name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) struct psil_endpoint_config *ep_config)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) struct psil_endpoint_config *dst_ep_config;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) struct of_phandle_args dma_spec;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) u32 thread_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) int index;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) if (!dev || !dev->of_node)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) index = of_property_match_string(dev->of_node, "dma-names", name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) if (index < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) return index;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) if (of_parse_phandle_with_args(dev->of_node, "dmas", "#dma-cells",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) index, &dma_spec))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) return -ENOENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) thread_id = dma_spec.args[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) dst_ep_config = psil_get_ep_config(thread_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) if (IS_ERR(dst_ep_config)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) pr_err("PSIL: thread ID 0x%04x not defined in map\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) thread_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) of_node_put(dma_spec.np);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) return PTR_ERR(dst_ep_config);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) memcpy(dst_ep_config, ep_config, sizeof(*dst_ep_config));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) of_node_put(dma_spec.np);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) EXPORT_SYMBOL_GPL(psil_set_new_ep_config);
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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