80486DX2-66/86Box-fork
1
0
Fork 0
Code Issues Pull Requests Activity

usb: Start work on SOF generation and frame counting

Browse Source
This commit is contained in:
Cacodemon345
2023-05-06 23:19:55 +06:00
parent aa02968c46
commit 41f26b57c2
2 changed files with 33 additions and 19 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
src/include/86box/usb.h
View File

@@ -36,7 +36,13 @@ typedef struct
/* USB Host Controller device struct */
typedef struct usb_t
{
uint8_t uhci_io[32], ohci_mmio[4096];
union
{
uint8_t ohci_mmio[4096];
uint16_t ohci_mmio_w[2048];
uint32_t ohci_mmio_l[1024];
};
uint8_t uhci_io[32];
uint16_t uhci_io_base;
int uhci_enable, ohci_enable;
uint32_t ohci_mem_base;

44
src/usb.c
View File

@@ -63,7 +63,7 @@ enum
OHCI_HcBulkHeadED = 0x28,
OHCI_HcBulkCurrentED = 0x2C,
OHCI_HcDoneHead = 0x30,
OHCI_HcFMInterval = 0x34,
OHCI_HcFmInterval = 0x34,
OHCI_HcFmRemaining = 0x38,
OHCI_HcFmNumber = 0x3C,
OHCI_HcPeriodicStart = 0x40,
@@ -223,10 +223,35 @@ ohci_mmio_read(uint32_t addr, void *p)
return ret;
}
void
ohci_set_interrupt(usb_t* usb, uint8_t bit)
{
if (!(usb->ohci_mmio[OHCI_HcInterruptEnable + 3] & 0x80))
return;
if (!(usb->ohci_mmio[OHCI_HcInterruptEnable] & bit))
return;
if (usb->ohci_mmio[OHCI_HcInterruptDisable] & bit)
return;
usb->ohci_mmio[OHCI_HcInterruptStatus] |= bit;
usb_interrupt_ohci(usb);
}
void
ohci_update_frame_counter(void* priv)
{
usb_t *dev = (usb_t *) priv;
dev->ohci_mmio_w[OHCI_HcFmRemaining / 2] &= 0x3fff;
if (dev->ohci_mmio_w[OHCI_HcFmRemaining / 2] == 0) {
dev->ohci_mmio_w[OHCI_HcFmRemaining / 2] = dev->ohci_mmio_w[OHCI_HcFmInterval / 2] & 0x3fff;
dev->ohci_mmio_l[OHCI_HcFmRemaining / 4] &= ~(1 << 31);
dev->ohci_mmio_l[OHCI_HcFmRemaining / 4] |= dev->ohci_mmio_l[OHCI_HcFmInterval / 4] & (1 << 31);
ohci_set_interrupt(dev, OHCI_HcInterruptEnable_SO);
}
if (dev->ohci_mmio_w[OHCI_HcFmRemaining / 2]) dev->ohci_mmio_w[OHCI_HcFmRemaining / 2]--;
}
void
@@ -257,23 +282,6 @@ ohci_port_reset_callback_2(void* priv)
dev->ohci_mmio[OHCI_HcRhPortStatus2] &= ~0x10;
dev->ohci_mmio[OHCI_HcRhPortStatus2 + 2] |= 0x10;
}
void
ohci_set_interrupt(usb_t* usb, uint8_t bit)
{
if (!(usb->ohci_mmio[OHCI_HcInterruptEnable + 3] & 0x80))
return;
if (!(usb->ohci_mmio[OHCI_HcInterruptEnable] & bit))
return;
if (usb->ohci_mmio[OHCI_HcInterruptDisable] & bit)
return;
usb->ohci_mmio[OHCI_HcInterruptStatus] |= bit;
usb_interrupt_ohci(usb);
}
static void
ohci_mmio_write(uint32_t addr, uint8_t val, void *p)
{