diff options
| author | Christian Cunningham <cc@localhost> | 2021-12-23 21:42:32 -0800 |
|---|---|---|
| committer | Christian Cunningham <cc@localhost> | 2021-12-23 21:42:32 -0800 |
| commit | 9bc94963aefcb5028c3529ff59c974e48d814690 (patch) | |
| tree | eb90b58da616bce55176b4f8f72a238cce19cd0d /src/cpu | |
| parent | a905c499ceddc47a5fcd46f863e453919c196722 (diff) | |
Intro USB
Diffstat (limited to 'src/cpu')
| -rw-r--r-- | src/cpu/atomic/swap.h | 1 | ||||
| -rw-r--r-- | src/cpu/irq.c | 21 |
2 files changed, 22 insertions, 0 deletions
diff --git a/src/cpu/atomic/swap.h b/src/cpu/atomic/swap.h index 5e8ff57..374dd97 100644 --- a/src/cpu/atomic/swap.h +++ b/src/cpu/atomic/swap.h @@ -6,6 +6,7 @@ /// https://elixir.bootlin.com/linux/v4.9/source/arch/arm/include/asm/spinlock.h /// https://elixir.bootlin.com/linux/v4.9/source/arch/arm/include/asm/spinlock_types.h#L23 /// https://www.cs.uic.edu/~jbell/CourseNotes/OperatingSystems/3_Processes.html +/// https://developer.arm.com/documentation/dht0008/a/arm-synchronization-primitives/practical-uses/implementing-a-semaphore?lang=en static inline void atm_lock(unsigned long pid, unsigned long* addr) { unsigned long tmp, current_lock_value; diff --git a/src/cpu/irq.c b/src/cpu/irq.c index f2b326e..e99b398 100644 --- a/src/cpu/irq.c +++ b/src/cpu/irq.c @@ -1,5 +1,6 @@ #include "../cpu/irq.h" #include "../drivers/uart.h" +#include "../drivers/usb.h" #include "../graphics/drawer.h" #include "../sys/core.h" #include "../sys/timer.h" @@ -92,6 +93,26 @@ void c_irq_handler(void) { enableirq(); return; } + } 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"); } } } else if (source & (1 << 3)) { c_timer(); |