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chihiro.cpp: more descriptions for usb commands in an2131qc (nw)

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This commit is contained in:
yz70s 2016-06-29 21:36:25 +02:00
parent cfd3c6f8dc
commit f3ae800e3d
1 changed files with 92 additions and 10 deletions
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102
src/mame/drivers/chihiro.cpp
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@ -733,7 +733,9 @@ int ohci_hlean2131qc_device::handle_nonstandard_request(int endpoint, USBSetupPa
// default valuse for data stage
for (int n = 0; n < setup->wLength; n++)
endpoints[endpoint].buffer[n] = 0x50 ^ n;
endpoints[endpoint].buffer[1] = 0x4b; // bits 4-1 special value, must be 10 xor 15
endpoints[endpoint].buffer[1] = 0x4b; // PINSA register, bits 4-1 special value, must be 10 xor 15, but bit 3 is ignored since its used as the CS pin of the chip
endpoints[endpoint].buffer[2] = 0x52; // PINSB register, bit 4 connected to re/de pins of max485, bits 2-3 used as uart pins, bit 0 is the sense pin of the jvs connector
endpoints[endpoint].buffer[3] = 0x53; // OUTB register
// bRequest is a command value
if (setup->bRequest == 0x16)
{
@ -743,8 +745,9 @@ int ohci_hlean2131qc_device::handle_nonstandard_request(int endpoint, USBSetupPa
// data will be transferred to the host using endpoint 1 (IN)
endpoints[1].remain = setup->wIndex & 255;
endpoints[1].position = region + setup->wValue; // usually wValue is 0x1f00
endpoints[endpoint].buffer[0] = 0;
}
if (setup->bRequest == 0x17)
else if (setup->bRequest == 0x17)
{
// this command is used to read data from the second i2c serial eeprom connected to the chip
// setup->wValue = start address to read from
@ -752,22 +755,101 @@ int ohci_hlean2131qc_device::handle_nonstandard_request(int endpoint, USBSetupPa
// data will be transferred to the host using endpoint 2 (IN)
endpoints[2].remain = setup->wIndex & 255;
endpoints[2].position = region + 0x2000 + setup->wValue;
endpoints[endpoint].buffer[0] = 0;
}
if (setup->bRequest == 0x19) // 19 used to receive packet, 20 to send ?
else if (setup->bRequest == 0x18)
{
// amount to transfer with endpoint 4
endpoints[endpoint].buffer[5] = 20 >> 8;
endpoints[endpoint].buffer[4] = (20 & 0xff);
endpoints[4].remain = 20;
// this command is used to read data from external memory (with respect to the internal 8051 cpu)
// setup->wValue = start address to read from
// setup->wIndex = number of bytes to read
// data will be transferred to the host using endpoint 3 (IN)
endpoints[endpoint].buffer[0] = 0;
}
else if (setup->bRequest == 0x19)
{
const int tosend = 20;
// this command is used to retreive the jvs packets that have been received in response to the ones of 0x20
// data for the packets will be transferred to the host using endpoint 4 (IN)
// the nuber of bytes to transfer is returned at bytes 4 and 5 in the data stage of this control transfer
// data transferred starts with a byte with value 0, then a byte with value the number of packets received, then a block of bytes for each packet
// the bytes for a packet start with the jvs node address, then a dummy one, then a 16 bit number in little endian format that specifies how many bytes follow
// the bytes that follow contain the body of the packet as received from the jvs bus
endpoints[endpoint].buffer[0] = 0; // 0 if not busy
endpoints[endpoint].buffer[5] = tosend >> 8; // amount to transfer with endpoint 4
endpoints[endpoint].buffer[4] = (tosend & 0xff);
endpoints[4].remain = tosend;
endpoints[4].position = endpoints[4].buffer;
memset(endpoints[4].buffer, 0, 20);
endpoints[endpoint].buffer[0] = 0;
}
if (setup->bRequest == 0x20)
else if (setup->bRequest == 0x1c)
{
printf(" Jvs packet of %d bytes\n\r", setup->wIndex-3);
// this command is used to read from the RV5C386A chip
// setup->wValue = what to read
// setup->wIndex = number of bytes to read
// data will be transferred to the host using endpoint 5 (IN)
endpoints[endpoint].buffer[0] = 0;
}
else if (setup->bRequest == 0x1d)
{
// this command is used to write data to the first i2c serial eeprom connected to the chip
// no more than 32 bytes can be written at a time
// setup->wValue = start address to write to
// setup->wIndex = number of bytes to write
// data will be transferred from the host using endpoint 1 (OUT)
endpoints[endpoint].buffer[0] = 0;
}
else if (setup->bRequest == 0x1e)
{
// this command is used to write data to the second i2c serial eeprom connected to the chip
// no more than 8 bytes can be written at a time
// setup->wValue = start address to write to
// setup->wIndex = number of bytes to write
// data will be transferred from the host using endpoint 2 (OUT)
endpoints[endpoint].buffer[0] = 0;
}
else if (setup->bRequest == 0x1f)
{
// this command is used to write data to external memory (with respect to the internal 8051 cpu)
// setup->wValue = start address to write to
// setup->wIndex = number of bytes to write
// data will be transferred from the host using endpoint 3 (OUT)
endpoints[endpoint].buffer[0] = 0;
}
else if (setup->bRequest == 0x20)
{
// this command is used to send a set of jvs packets, each to a different node
// for each packet sent, the respective answer will be stored, and can be retrieved with 0x19
// setup->wIndex = number of bytes to be sent by the host
// data for the packets will be transferred from the host using endpoint 4 (OUT)
// data sent by the host contains first a byte with value 0 that is ignored, then a byte specifying the number of packets that follow, then the data for each packet
// the data for each packet contains first a byte with value 0, then the sync byte (0xe0) then all the other bytes of the packet ending with the checksum byte
printf(" Jvs packets data of %d bytes\n\r", setup->wIndex);
endpoints[endpoint].buffer[0] = 0;
}
else if (setup->bRequest == 0x24)
{
// this command is used to write to the RV5C386A chip
// no more than 0x20 bytes can be written
// setup->wValue = what to read
// data will be transferred from the host using endpoint 5 (OUT)
endpoints[endpoint].buffer[0] = 0;
}
else if (setup->bRequest == 0x30)
{
// this command first disables external interrupt 0 if the lower 8 bits of setup->wValue are 0
// or enables it if those bits, seen as a signed 8 bit value, represent a number greater than 0
// then it will return in byte 4 of the data stage the value 0 if external interrupt 0 has been disabled or value 1 if it has been enabled
// and in byte 5 the value of an 8 bit counter that is incremented at every external interrupt 0
endpoints[endpoint].buffer[0] = 0;
if ((setup->wValue & 255) == 0)
endpoints[endpoint].buffer[4] = 0;
else if ((setup->wValue & 255) < 128)
endpoints[endpoint].buffer[4] = 1;
endpoints[endpoint].buffer[5] = 0;
} else
endpoints[endpoint].buffer[0] = 0x99; // usnupported command
endpoints[endpoint].buffer[0] = 0;
endpoints[endpoint].position = endpoints[endpoint].buffer;
endpoints[endpoint].remain = setup->wLength;
return 0;