setos

commit f3294d1323a3c63ef40c3680fca074fbbd1853e8
parent 905898fdce5117298a54c419e06fa984bfbca3a9
Author: Matsuda Kenji <info@mtkn.jp>
Date:   Wed,  1 May 2024 12:04:14 +0900

setup an event ring

Diffstat:
M
sys/include/xhc.h
 | 
3
++-
M
sys/src/kernel/main.c
 | 
21
+++++++++++++++++++--

2 files changed, 21 insertions(+), 3 deletions(-)
diff --git a/sys/include/xhc.h b/sys/include/xhc.h
@@ -36,10 +36,11 @@ struct xhc_operational_registers {
 	uint32 PAGESIZE;
 	uint8  RsvdZ0[8];
 	uint32 NDCTRL;
-	uint32 CRCR;
+	uint64 CRCR;
 	uint8  RsvdZ1[16];
 	uint64 DCBAAP;
 	uint32 CONFIG;
+	// TODO: port register set
 };
 
 struct xhc_runtime_registers {
diff --git a/sys/src/kernel/main.c b/sys/src/kernel/main.c
@@ -95,7 +95,7 @@ kernel_main(EFI_GRAPHICS_OUTPUT_PROTOCOL *gop)
 		goto halt;
 	}
 	xhc.op->CONFIG |= 1; // CONFIG.MaxSlotsEn
-	cons_printf(&con0, "set CONFIG.MaxSlotsEn: %x\n", xhc.op->CONFIG);
+	cons_printf(&con0, "CONFIG: %x\n", xhc.op->CONFIG);
 	// TODO: align DCBAAP in 64-byte.
 	// I don't like __attribute__
 	xhc_device_context *DCBAAP[2] __attribute__((aligned(64))) = {0};
@@ -106,7 +106,24 @@ kernel_main(EFI_GRAPHICS_OUTPUT_PROTOCOL *gop)
 	xhc_device_context device_context;
 	DCBAAP[1] = &device_context;
 	xhc.op->DCBAAP = (uint64) DCBAAP;
-	cons_printf(&con0, "DCBAAP set to: %x\n", xhc.op->DCBAAP);
+	cons_printf(&con0, "DCBAAP: %x\n", xhc.op->DCBAAP);
+
+	// setup the command ring.
+	xhc_trb command_ring[16] __attribute__((aligned(64))) = {0};
+	// set link TRB.
+	command_ring[15].parameter = (uint64) command_ring;
+	command_ring[15].control = 6 << 10; // TRB type: link TRB
+	xhc.op->CRCR = (uint64) command_ring;
+
+	// setup an event ring.
+	xhc_trb event_ring_segment_table[1] __attribute__((aligned(64))) = {0};
+	xhc_trb event_ring_segment[16] __attribute__((aligned(16))) = {0};
+	event_ring_segment_table[0].parameter = (uint64) event_ring_segment;
+	xhc.runtime->IR[0].ERSTSZ = sizeof(event_ring_segment_table) / sizeof(event_ring_segment_table[0]);
+	xhc.runtime->IR[0].ERDP = (uint64) event_ring_segment;
+	xhc.runtime->IR[0].ERSTBA = (uint64) event_ring_segment_table;
+
+	// setup the primary interrupter
 
 	cons_printf(&con0, "local apic id: %x\n", *(uint32 *) (0xfee00020) >> 24);
 	uintptr pci_config_base = (uintptr) pci_xhc;