d5f394859d
Had to rearrange the proble logic somewhat, but now the bus manager will assign consequtive bus numbers as it finds bridges and recursively drills down to discover the entire bus structure. Does not assign resources yet, but need to do this in the first pass to find all of the devices before can figure out how much space they occupy.
70 lines
1.6 KiB
C++
70 lines
1.6 KiB
C++
/*
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* Copyright (c) 2021 Travis Geiseblrecht
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*
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* Use of this source code is governed by a MIT-style
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* license that can be found in the LICENSE file or at
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* https://opensource.org/licenses/MIT
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*/
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#pragma once
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#include <sys/types.h>
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#include <dev/bus/pci.h>
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#include <lk/cpp.h>
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#include <lk/err.h>
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#include "device.h"
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#include "bridge.h"
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namespace pci {
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// bus device holds a list of devices and a reference to its bridge device
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class bus {
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public:
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bus(pci_location_t loc, bridge *b);
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~bus() = default;
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DISALLOW_COPY_ASSIGN_AND_MOVE(bus);
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static status_t probe(pci_location_t loc, bridge *bridge, bus **out_bus);
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pci_location_t loc() const { return loc_; }
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uint bus_num() const { return loc().bus; }
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void add_device(device *d);
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void dump(size_t indent = 0);
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const bridge *get_bridge() const { return b_; }
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bridge *get_bridge() { return b_; }
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template <typename F>
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status_t for_every_device(F func);
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void add_to_global_list();
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// master list of busses for easy iteration
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list_node node = LIST_INITIAL_CLEARED_VALUE;
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list_node *list_node_ptr() { return &node; }
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private:
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pci_location_t loc_ = {};
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bridge *b_ = nullptr;
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list_node child_devices_ = LIST_INITIAL_VALUE(child_devices_);
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};
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// call the provided functor on every device in this bus
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template <typename F>
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inline status_t bus::for_every_device(F func) {
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status_t err = NO_ERROR;
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device *d;
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list_for_every_entry(&child_devices_, d, device, node) {
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err = func(d);
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if (err != NO_ERROR) {
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return err;
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}
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}
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return err;
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}
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} // namespace pci
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