Split USB and Distributed DMA into their own files in preparation for the overhaul of the VIA southbridges.
This commit is contained in:
OBattler
196
src/usb.c
196
src/usb.c
@@ -1,53 +1,185 @@
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/* Copyright holders: Melissa Goad
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see COPYING for more details
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*/
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/*
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* 86Box A hypervisor and IBM PC system emulator that specializes in
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* running old operating systems and software designed for IBM
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* PC systems and compatibles from 1981 through fairly recent
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* system designs based on the PCI bus.
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*
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* This file is part of the 86Box distribution.
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*
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* Universal Serial Bus emulation (currently dummy UHCI and
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* OHCI).
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*
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*
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*
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* Authors: Miran Grca, <mgrca8@gmail.com>
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*
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* Copyright 2020 Miran Grca.
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*/
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#include <stdarg.h>
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#include <stdio.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include <string.h>
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#include <wchar.h>
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#define HAVE_STDARG_H
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#include <86box/86box.h>
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#include <86box/device.h>
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#include <86box/io.h>
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#include <86box/mem.h>
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#include <86box/usb.h>
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void *usb_priv[32];
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static int usb_min_card, usb_max_card;
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#ifdef ENABLE_USB_LOG
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int usb_do_log = ENABLE_USB_LOG;
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void (*usb_packet_handle[32])(usb_packet_t* packet, void *priv);
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void usb_init(int min_card, int max_card)
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static void
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usb_log(const char *fmt, ...)
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{
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int c;
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for (c = 0; c < 32; c++)
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usb_packet_handle[c] = usb_priv[c] = NULL;
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usb_min_card = min_card;
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usb_max_card = max_card;
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va_list ap;
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if (usb_do_log) {
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va_start(ap, fmt);
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pclog_ex(fmt, ap);
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va_end(ap);
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}
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}
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#else
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#define usb_log(fmt, ...)
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#endif
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static uint8_t
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uhci_reg_read(uint16_t addr, void *p)
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{
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uint8_t ret = 0xff;
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switch (addr & 0x1f) {
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case 0x10: case 0x11: case 0x12: case 0x13:
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/* Port status */
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ret = 0x00;
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break;
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}
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return ret;
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}
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void usb_add_specific(int card, void (*packet_handle)(usb_packet_t *packet, void *priv), void *priv)
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static void
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uhci_reg_write(uint16_t addr, uint8_t val, void *p)
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{
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usb_packet_handle[card] = packet_handle;
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usb_priv[card] = priv;
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}
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void usb_add(void (*packet_handle)(usb_packet_t *packet, void *priv), void *priv)
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void
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uhci_update_io_mapping(usb_t *dev, uint8_t base_l, uint8_t base_h, int enable)
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{
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int c;
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for (c = usb_min_card; c <= usb_max_card; c++)
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{
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if (!usb_packet_handle[c])
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{
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usb_packet_handle[c] = packet_handle;
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usb_priv[c] = priv;
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// pclog("USB device added to card: %i\n", c);
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return;
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}
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}
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if (dev->uhci_enable && (dev->uhci_io_base != 0x0000))
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io_removehandler(dev->uhci_io_base, 0x20, uhci_reg_read, NULL, NULL, uhci_reg_write, NULL, NULL, dev);
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dev->uhci_io_base = base_l | (base_h << 8);
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dev->uhci_enable = enable;
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if (dev->uhci_enable && (dev->uhci_io_base != 0x0000))
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io_sethandler(dev->uhci_io_base, 0x20, uhci_reg_read, NULL, NULL, uhci_reg_write, NULL, NULL, dev);
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}
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static uint8_t
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ohci_mmio_read(uint32_t addr, void *p)
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{
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usb_t *dev = (usb_t *) p;
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uint8_t ret = 0x00;
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addr &= 0x00000fff;
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ret = dev->ohci_mmio[addr];
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return ret;
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}
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static void
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ohci_mmio_write(uint32_t addr, uint8_t val, void *p)
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{
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usb_t *dev = (usb_t *) p;
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addr &= 0x00000fff;
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switch (addr) {
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case 0x08: /* HCCOMMANDSTATUS */
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/* bit HostControllerReset must be cleared for the controller to be seen as initialized */
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val &= ~0x01;
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/* bit OwnershipChangeRequest triggers an ownership change (SMM <-> OS) */
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if (val & 0x0f) {
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dev->ohci_mmio[0x0f] = 0x40;
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dev->ohci_mmio[0x05] &= ~(dev->ohci_mmio[0x05] & 0x01);
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}
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break;
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}
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dev->ohci_mmio[addr] = val;
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}
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void
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ohci_update_mem_mapping(usb_t *dev, uint8_t base1, uint8_t base2, uint8_t base3, int enable)
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{
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if (dev->ohci_enable && (dev->ohci_mem_base != 0x00000000))
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mem_mapping_disable(&dev->ohci_mmio_mapping);
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dev->ohci_mem_base = ((base1 << 8) | (base2 << 16) | (base3 << 24)) & 0xfffff000;
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dev->ohci_enable = enable;
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if (dev->ohci_enable && (dev->ohci_mem_base != 0x00000000))
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mem_mapping_set_addr(&dev->ohci_mmio_mapping, dev->ohci_mem_base, 0x1000);
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}
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static void
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usb_close(void *priv)
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{
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usb_t *dev = (usb_t *) priv;
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free(dev);
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}
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static void *
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usb_init(const device_t *info)
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{
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usb_t *dev;
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dev = (usb_t *)malloc(sizeof(usb_t));
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if (dev == NULL) return(NULL);
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memset(dev, 0x00, sizeof(usb_t));
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memset(dev->ohci_mmio, 0x00, 4096);
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dev->ohci_mmio[0x00] = 0x10;
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dev->ohci_mmio[0x01] = 0x01;
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dev->ohci_mmio[0x48] = 0x02;
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mem_mapping_add(&dev->ohci_mmio_mapping, 0, 0,
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ohci_mmio_read, NULL, NULL,
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ohci_mmio_write, NULL, NULL,
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NULL, MEM_MAPPING_EXTERNAL, dev);
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mem_mapping_disable(&dev->ohci_mmio_mapping);
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return dev;
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}
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const device_t usb_device =
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{
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"Universal Serial Bus",
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DEVICE_PCI,
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0,
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usb_init,
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usb_close,
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NULL,
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NULL,
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NULL,
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NULL,
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NULL
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};
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