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-rw-r--r--later/usb.c361
1 files changed, 361 insertions, 0 deletions
diff --git a/later/usb.c b/later/usb.c
new file mode 100644
index 0000000..371f470
--- /dev/null
+++ b/later/usb.c
@@ -0,0 +1,361 @@
+#include "../drivers/uart.h"
+#include "../drivers/usb.h"
+#include "../sys/core.h"
+
+#define DRIVERS_USB_C
+unsigned char usb_buffer0[256] = {0};
+unsigned char usb_buffer1[256] = {0};
+unsigned char usb_buffer3[256] = {0};
+
+void my_memcpy(void *dest, void *src, size_t n) {
+ char *src_char = (char *)src;
+ char *dest_char = (char *)dest;
+ for (size_t i=0; i<n; i++) {
+ dest_char[i] = src_char[i];
+ }
+}
+
+static void *my_memset(void *s, int c, size_t n)
+{
+ const uint8_t uc = c % 0xff;
+ uint8_t *p = (uint8_t *)s;
+
+ while (n-- > 0)
+ *p++ = uc;
+
+ return (s);
+}
+
+static void txrx_control_msg(uint8_t txlen)
+{
+ // send setup & control packet
+ // set dma buffer
+ *USB_HOST_HCDMA0 = (uint64_t) usb_buffer0;
+ *USB_HOST_HCDMA0 |= 0xC0000000;
+ // HCTSIZ0.Pid = 2'd3 (SETUP) , HCTSIZ0.PktCnt = 10'h1 , HCTSIZ0.XferSize = 18'd8
+ *USB_HOST_HCTSIZ0 = 3 << 29 | 1 << 19 | txlen;
+ // HCCAR1.ChEna = 1'b1
+ *USB_HOST_HCCHAR0 |= 1<<31;
+
+ // recieve control packet
+ // set dma buffer
+ *USB_HOST_HCDMA1 = (uint64_t) usb_buffer1;
+ *USB_HOST_HCDMA1 |= 0xC0000000;
+ // HCTSIZ1.Pid = 2'd2 (DATA1) , HCTSIZ1.PktCnt = 10'h1 , HCTSIZ1.XferSize = 18'd64
+ *USB_HOST_HCTSIZ1 = 2 << 29 | 1 << 19 | 64;
+ // HCCAR1.ChEna = 1'b1
+ *USB_HOST_HCCHAR1 |= 1<<31;
+}
+
+void usbhost_id(void)
+{
+ uart_string("USB_CORE_GUID ");
+ uart_hex(*USB_CORE_GUID);
+ uart_string("\nUSB_CORE_GSNPSID ");
+ uart_hex(*USB_CORE_GSNPSID);
+ uart_char('\n');
+}
+
+void usbhost_start(void)
+{
+ // USB Host power on
+ // HPRT.PrtPwr = 1'b1 -> HPRT.PrtRst = 1'b1 -> wait 60msec -> HPRT.PrtRst = 1'b0
+ *USB_HOST_HPRT |= 1 << 12;
+ *USB_HOST_HPRT |= 1 << 8;
+ delay(0x100000);
+ *USB_HOST_HPRT &= ~(1 << 8);
+
+ // enable irq
+ // GAHBCFG.GlblIntrMsk = 1'b1
+ // GINTMSK.ConIDStsChngMsk = 1'b1, GINTMSK.PrtIntMsk = 1'b1, GINTMSK.SofMsk = 1'b1
+ *USB_CORE_GAHBCFG |= 1;
+ *USB_CORE_GINTMSK = 1 << 28 | 1 << 24 | 0 << 3;
+
+ // port enable and retry detect
+ // HPRT.PrtPwr = 1'b1, HPRT.PrtEnChng = 1'b1, HPRT.PrtConnDet = 1'b1
+ *USB_HOST_HPRT = 1 << 12 | 1 << 3 | 1 << 1;
+
+ // enable channel irq
+ // HAINTMASK.HAINTMsk = 16'h3
+ // HCINTMSK0.XferComplMsk = 1'b1
+ *USB_HOST_HAINTMSK |= 0x3;
+ *USB_HOST_HCINTMSK0 |= 1;
+ *USB_HOST_HCINTMSK1 |= 1;
+
+ // HCCAR1.EPDir = 1'b0 (OUT) / 1'b01(IN), HCCAR1.MPS = 11'h40
+ *USB_HOST_HCCHAR0 |= 0x40; // OUT
+ *USB_HOST_HCCHAR1 |= 1 << 15 | 0x40; // IN
+}
+
+void usbhost_poll_intr(void)
+{
+ uint8_t dev = 2;
+
+ my_memset(usb_buffer3, 0, 256);
+
+ // HCCAR3.EPType = 2'b11 (Interupt), HCCAR3.EPDir = 1'b01(IN), HCCAR3.MPS = 11'h40
+ *USB_HOST_HCCHAR3 |= 3 << 18 | 1 << 15 | 1 << 11 | 0x40; // IN
+ *USB_HOST_HCCHAR3 |= dev << 22 ;
+
+ // recieve interrupt transfer
+ // set dma buffer
+ *USB_HOST_HCDMA3 = (uint64_t) usb_buffer3;
+ *USB_HOST_HCDMA3 |= 0xC0000000;
+ // HCTSIZ1.Pid = 2'd2 (DATA1) , HCTSIZ1.PktCnt = 10'h1 , HCTSIZ1.XferSize = 18'd64
+ *USB_HOST_HCTSIZ3 = 2 << 29 | 1 << 19 | 64;
+ // HCCAR1.ChEna = 1'b1
+ *USB_HOST_HCCHAR3 |= 1<<31;
+
+ uart_string("HUB INT ");
+ for (int i = 0; i < 2; i++) {
+ uart_hex(usb_buffer3[i]);
+ uart_char(' ');
+ }
+ uart_char('\n');
+}
+
+static void prepare_control_msg(void)
+{
+ my_memset(usb_buffer0, 0, 256);
+ my_memset(usb_buffer1, 0, 256);
+
+ // HCCAR1.EPDir = 1'b0 (OUT) / 1'b01(IN), HCCAR1.MPS = 11'h40
+ *USB_HOST_HCCHAR0 |= 0x40; // OUT
+ *USB_HOST_HCCHAR1 |= 1 << 15 | 0x40; // IN
+
+ //clear dev
+ *USB_HOST_HCCHAR0 &= ~(0x7f << 22);
+ *USB_HOST_HCCHAR1 &= ~(0x7f << 22);
+}
+
+
+void usbhost_get_descriptor(uint8_t dev, uint8_t descriptor_type, bool is_hub)
+{
+ prepare_control_msg();
+
+ *USB_HOST_HCCHAR0 |= dev << 22;
+ *USB_HOST_HCCHAR1 |= dev << 22;
+
+ // build packet
+ my_memcpy(usb_buffer0, &(struct UsbDeviceRequest) {
+ .Type = is_hub ? 0xA0 : 0x80, // DEVICE_TO_HOST | STANDARD | DEVICE
+ .Request = 0x06, // GET_DESCRIPTOR
+ .Value = descriptor_type << 8 | 0x00, // descriptor.type = 0x01, decriptor.index = 0x00
+ .Index = 0,
+ .Length = 64,
+ }, 8);
+
+ txrx_control_msg(8);
+}
+
+void usbhost_get_portstatus(uint8_t dev, uint8_t port, bool is_hub)
+{
+ prepare_control_msg();
+
+ *USB_HOST_HCCHAR0 |= dev << 22;
+ *USB_HOST_HCCHAR1 |= dev << 22;
+
+ // build packet
+ my_memcpy(usb_buffer0, &(struct UsbDeviceRequest) {
+ .Type = is_hub ? 0xA3 : 0x80, // DEVICE_TO_HOST | CLASS or STANDARD | DEVICE
+ .Request = 0x00, // GET_STATUS
+ .Index = port,
+ .Length = 4,
+ }, 8);
+
+ txrx_control_msg(8);
+
+ uart_string("PORT STATUS ");
+ uart_10(port);
+ for (int i = 0; i < 4; i++) {
+ uart_hex(usb_buffer1[i]);
+ uart_char(' ');
+ }
+ uart_char('\n');
+}
+
+void usbhost_set_address(uint8_t address)
+{
+ prepare_control_msg();
+
+ // build packet
+ my_memcpy(usb_buffer0, &(struct UsbDeviceRequest) {
+ .Type = 0,
+ .Request = 5, // Set address request
+ .Value = address, // Address to set
+ }, 8);
+
+ txrx_control_msg(8);
+}
+
+void usbhost_set_config(uint8_t dev, uint8_t config)
+{
+ prepare_control_msg();
+
+ *USB_HOST_HCCHAR0 |= dev << 22;
+ *USB_HOST_HCCHAR1 |= dev << 22;
+
+ // build packet
+ my_memcpy(usb_buffer0, &(struct UsbDeviceRequest) {
+ .Type = 0,
+ .Request = 9, // Set config
+ .Value = config, // Address to set
+ .Length = 0,
+ }, 8);
+
+ txrx_control_msg(8);
+}
+
+void usbhost_set_portfeature(uint8_t dev, uint8_t port, uint16_t feature)
+{
+ prepare_control_msg();
+
+ *USB_HOST_HCCHAR0 |= dev << 22;
+ *USB_HOST_HCCHAR1 |= dev << 22;
+
+ // build packet
+ my_memcpy(usb_buffer0, &(struct UsbDeviceRequest) {
+ .Type = 0x23, // ??
+ .Request = 0x03, // SET_FEATURE
+ .Value = (uint16_t)feature, // Feature we are changing
+ .Index = port,
+ .Length = 0,
+ }, 8);
+
+ txrx_control_msg(8);
+}
+
+void usbhost_clear_portfeature(uint8_t dev, uint8_t port, uint16_t feature)
+{
+ prepare_control_msg();
+
+ *USB_HOST_HCCHAR0 |= dev << 22;
+ *USB_HOST_HCCHAR1 |= dev << 22;
+
+ // build packet
+ my_memcpy(usb_buffer0, &(struct UsbDeviceRequest) {
+ .Type = 0x23, // ??
+ .Request = 0x01, // CLEAR_FEATURE
+ .Value = feature,
+ .Index = port,
+ .Length = 0,
+ }, 8);
+
+ txrx_control_msg(8);
+}
+
+void usb_trig(void)
+{
+ usbhost_id();
+ usbhost_start();
+
+ uart_string("GET DEVICE_DESCRIPTOR\n");
+ usbhost_get_descriptor(0, 0x01, false);
+ for (int i = 0; i < 18; i++) {
+ uart_hex(usb_buffer1[i]);
+ uart_char(' ');
+ }
+ uart_char('\n');
+
+ uart_string("SET ADDRESS 2\n");
+ usbhost_set_address(2);
+
+ uart_string("GET CONFIG_DESCRIPTOR\n");
+ usbhost_get_descriptor(2, 0x02, false);
+ for (int i = 0; i < 18; i++) {
+ uart_hex(usb_buffer1[i]);
+ uart_char(' ');
+ }
+ uart_char('\n');
+
+ uart_string("SET CONFIG 1\n");
+ usbhost_set_config(2, 1);
+
+ uart_string("GET HUB_DESCRIPTOR\n");
+ usbhost_get_descriptor(2, 41, true);
+ for (int i = 0; i < 18; i++) {
+ uart_hex(usb_buffer1[i]);
+ uart_char(' ');
+ }
+ uart_char('\n');
+ uart_string("Hub device 0 has ");
+ uart_10(usb_buffer1[2]);
+ uart_string(" ports\n");
+
+ usbhost_get_portstatus(2, 0, false);
+ usbhost_get_portstatus(2, 1, true);
+ usbhost_clear_portfeature(2, 1, 0x0010);
+ usbhost_get_portstatus(2, 1, true);
+
+ uart_string("SET PORT 1 POWER ON\n");
+ usbhost_set_portfeature(2, 1, 0x0008);
+ usbhost_get_portstatus(2, 1, true);
+
+ delay(0x100000);
+
+ uart_string("CLEAR PORT FEATURE\n");
+ usbhost_clear_portfeature(2, 1, 0x0010);
+ // usbhost_get_portstatus(2, 1, true);
+ // usbhost_poll_intr();
+
+ uart_string("SET PORT 1 RESET\n");
+ usbhost_set_portfeature(2, 1, 0x0004);
+ // usbhost_poll_intr();
+
+ uart_string("CLEAR PORT FEATURE\n");
+ usbhost_clear_portfeature(2, 1, 0x0014);
+ usbhost_clear_portfeature(2, 1, 0x0011);
+ // usbhost_get_portstatus(2, 1, true);
+ // usbhost_poll_intr();
+
+ uart_string("GET DEVICE_DESCRIPTOR\n");
+ usbhost_get_descriptor(0, 0x01, false);
+ for (int i = 0; i < 18; i++) {
+ uart_hex(usb_buffer1[i]);
+ uart_char(' ');
+ }
+ uart_string("\n");
+
+ usbhost_set_address(3);
+ uart_string("GET CONFIG_DESCRIPTOR\n");
+ usbhost_get_descriptor(3, 0x02, false);
+ for (int i = 0; i < 18; i++) {
+ uart_hex(usb_buffer1[i]);
+ uart_char(' ');
+ }
+ uart_string("\n");
+}
+
+
+/* src/cpu/irq.c
+ } else if (load32(IRQ_PENDING1) & (1 << 9)) {
+ unsigned long reg = *USB_CORE_GINTSTS;
+ *USB_CORE_GINTSTS = reg; //clear
+ g_Drawer.y = 20;
+ write_hex32(&g_Drawer, reg);
+ g_Drawer.x = 0;
+ g_Drawer.y = 0;
+ if (reg & 1 << 28) { uart_string("Connector ID Status Change\n"); }
+ if (reg & 1 << 27) { uart_string("LPM Transaction Received Interrupt\n"); }
+ if (reg & 1 << 26) { uart_string("Periodic TxFIFO Empty\n"); }
+ if (reg & 1 << 25) { uart_string("Host Channels Interrupt\n");
+ }
+ if (reg & 1 << 24) { *USB_HOST_HPRT |= 1 << 1; //clear host port interrupt
+ uart_string("Host Port Interrupt\n"); }
+ if (reg & 1 << 6) { uart_string("Global IN Non-periodic NAK Effective\n"); }
+ if (reg & 1 << 5) { uart_string("Non-periodic TxFIFO Empty\n"); }
+ if (reg & 1 << 4) { uart_string("Host and Device RxFIFO Non-Empty (RxFLvl) \n"); }
+ if (reg & 1 << 3) { uart_string("Host and Device Start of Frame\n"); }
+ if (reg & 1 << 2) { uart_string("OTG Interrupt\n"); }
+ if (reg & 1 << 1) { uart_string("Mode Mismatch Interrupt\n"); }
+
+
+ * src/sys/core.c sysinit(void)
+ // Enable USB Interrupt
+ store32(1<<9, IRQ_ENABLE1);
+ usbhost_start();
+
+
+ * src/sys/core.c postinit()
+ usb_trig();
+*/
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