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https://github.com/livingcomputermuseum/UniBone.git
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10cf1598f1
Interrupt and DMA system now handles multiple levels and multiple devices in parallel Interrupt Register changes synced with INTR transaction DL11 and KW11 clock pass the ZDLDI0 diagnostic. Devices can now be enabled and disabled individually.
108 lines
3.7 KiB
C++
108 lines
3.7 KiB
C++
/* priorityrequest.cpp: DMA or iNTR request of an device
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Copyright (c) 2019 Joerg Hoppe
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j_hoppe@t-online.de, www.retrocmp.com
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Permission is hereby granted, free of charge, to any person obtaining a
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copy of this software and associated documentation files (the "Software"),
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to deal in the Software without restriction, including without limitation
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the rights to use, copy, modify, merge, publish, distribute, sublicense,
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and/or sell copies of the Software, and to permit persons to whom the
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Software is furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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JOERG HOPPE BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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jul-2019 JH start: multiple parallel arbitration levels
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*/
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#include <assert.h>
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#include <algorithm>
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#include "unibusdevice.hpp"
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#include "priorityrequest.hpp"
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priority_request_c::priority_request_c(unibusdevice_c *device) {
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this->log_label = "REQ";
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this->device = device;
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this->complete = false;
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this->executing_on_PRU = false;
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this->slot = 0xff; // uninitialized, asserts() if used
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complete_mutex = PTHREAD_MUTEX_INITIALIZER;
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//complete_cond = PTHREAD_COND_INITIALIZER; // PRU signal notifies request on completeness
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}
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priority_request_c::~priority_request_c() {
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// not used, but need some virtual func for dynamic_cast()
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}
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void priority_request_c::set_priority_slot(uint8_t priority_slot) {
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assert(priority_slot > 0); // 0 reserved
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assert(priority_slot < PRIORITY_SLOT_COUNT);
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unibusdevice_c *ubdevice = unibusdevice_c::find_by_request_slot(priority_slot);
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if (ubdevice && ubdevice != this->device) {
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WARNING("Slot %u already used by device %s", (unsigned) priority_slot, ubdevice->name.value.c_str());
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}
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this->slot = priority_slot;
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// todo: check for collision with all other devices, all other requests
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}
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// create invalid requests, is setup by unibusadapter
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dma_request_c::dma_request_c(unibusdevice_c *device) :
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priority_request_c(device) {
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this->level_index = PRIORITY_LEVEL_INDEX_NPR;
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this->success = false;
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// register request for device
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if (device) {
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device->dma_requests.push_back(this);
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}
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}
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dma_request_c::~dma_request_c() {
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if (device) {
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// find and erase from device's request list
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std::vector<dma_request_c *>::iterator it = std::find(device->dma_requests.begin(),
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device->dma_requests.end(), this);
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device->dma_requests.erase(it);
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}
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}
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// create invalid requests, is setup by unibusadapter
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intr_request_c::intr_request_c(unibusdevice_c *device) :
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priority_request_c(device) {
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// convert UNIBUS level 4,5,6,7 to internal priority, see REQUEST_INDEX_*
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this->level_index = 0xff; // uninitialized, asserts() if used
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this->vector = 0xffff; // uninitialized, asserts() if used
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this->signal_level = 0;
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if (device)
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device->intr_requests.push_back(this);
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}
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intr_request_c::~intr_request_c() {
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if (device) {
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// find and erase from device's request list
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std::vector<intr_request_c *>::iterator it = std::find(device->intr_requests.begin(),
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device->intr_requests.end(), this);
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device->intr_requests.erase(it);
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}
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}
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void intr_request_c::set_level(uint8_t level) {
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assert(level >= 4 && level <= 7);
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this->level_index = level - 4; // one of PRIORITY_LEVEL_INDEX_*
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}
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void intr_request_c::set_vector(uint16_t vector) {
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assert((vector & 3) == 0); // multiple of 2 words
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this->vector = vector;
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}
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