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Code Issues Releases Wiki Activity

使mm支持4K虚拟地址映射

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This commit is contained in:
fslongjin
2022-07-18 16:07:34 +08:00
parent 8b6489dac3
commit aa3f433cd5
10 changed files with 335 additions and 111 deletions
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37
kernel/driver/usb/xhci/xhci.c
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@ -2,12 +2,14 @@
#include <common/kprint.h>
#include <debug/bug.h>
#include <process/spinlock.h>
#include <mm/mm.h>
#include <debug/traceback/traceback.h>
spinlock_t xhci_controller_init_lock; // xhci控制器初始化锁(在usb_init中被初始化)
static int xhci_ctrl_count = 0; // xhci控制器计数
static int xhci_ctrl_count = 0; // xhci控制器计数
static struct xhci_host_controller_t xhci_hc[MAX_XHCI_HOST_CONTROLLERS] = {0};
/**
* @brief 初始化xhci控制器
@ -17,12 +19,41 @@ static int xhci_ctrl_count = 0; // xhci控制器计数
void xhci_init(struct pci_device_structure_general_device_t *dev_hdr)
{
spin_lock(&xhci_controller_init_lock);
kinfo("Initializing xhci host controller: bus=%#02x, device=%#02x, func=%#02x, VendorID=%#04x, irq_line=%d, irq_pin=%d", dev_hdr->header.bus, dev_hdr->header.device, dev_hdr->header.func, dev_hdr->header.Vendor_ID, dev_hdr->Interrupt_Line, dev_hdr->Interrupt_PIN );
kinfo("Initializing xhci host controller: bus=%#02x, device=%#02x, func=%#02x, VendorID=%#04x, irq_line=%d, irq_pin=%d", dev_hdr->header.bus, dev_hdr->header.device, dev_hdr->header.func, dev_hdr->header.Vendor_ID, dev_hdr->Interrupt_Line, dev_hdr->Interrupt_PIN);
xhci_hc[xhci_ctrl_count].controller_id = xhci_ctrl_count;
xhci_hc[xhci_ctrl_count].pci_dev_hdr = dev_hdr;
pci_write_config(dev_hdr->header.bus, dev_hdr->header.device, dev_hdr->header.func, 0x4, 0x0006); // mem I/O access enable and bus master enable
// 为当前控制器映射寄存器地址空间
xhci_hc[xhci_ctrl_count].vbase = SPECIAL_MEMOEY_MAPPING_VIRT_ADDR_BASE + XHCI_MAPPING_OFFSET + PAGE_2M_SIZE * xhci_hc[xhci_ctrl_count].controller_id;
kdebug("dev_hdr->BAR0 & (~0xf)=%#018lx", dev_hdr->BAR0 & (~0xf));
mm_map_phys_addr(xhci_hc[xhci_ctrl_count].vbase, dev_hdr->BAR0 & (~0xf), 65536, PAGE_KERNEL_PAGE | PAGE_PWT | PAGE_PCD, true);
// 读取xhci控制寄存器
uint16_t iversion = *(uint16_t *)(xhci_hc[xhci_ctrl_count].vbase + XHCI_CAPS_HCIVERSION);
uint32_t dboff = *(uint16_t *)(xhci_hc[xhci_ctrl_count].vbase + XHCI_CAPS_DBOFF);
// kdebug("dboff=%ld", dboff);
// struct xhci_caps_HCSPARAMS1_reg_t hcs1 = *(struct xhci_caps_HCSPARAMS1_reg_t *)(xhci_hc[xhci_ctrl_count].vbase + XHCI_CAPS_HCSPARAMS1);
// kdebug("hcs1.max_ports=%d, hcs1.max_slots=%d, hcs1.max_intrs=%d", hcs1.max_ports, hcs1.max_slots, hcs1.max_intrs);
// kdebug("caps size=%d", *(uint8_t *)xhci_hc[xhci_ctrl_count].vbase);
// kdebug("iversion=%#06x", iversion);
if (iversion < 0x95)
{
kwarn("Unsupported/Unknowned xHCI controller version: %#06x. This may cause unexpected behavior.", iversion);
}
++xhci_ctrl_count;
spin_unlock(&xhci_controller_init_lock);
return;
failed:;
// 取消地址映射
mm_unmap(xhci_hc[xhci_ctrl_count].vbase, 65536);
// 清空数组
memset((void *)&xhci_hc[xhci_ctrl_count], 0, sizeof(struct xhci_host_controller_t));
spin_unlock(&xhci_controller_init_lock);
}

6
kernel/driver/usb/xhci/xhci.h
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@ -2,6 +2,8 @@
#include <driver/usb/usb.h>
#include <driver/pci/pci.h>
#define MAX_XHCI_HOST_CONTROLLERS 8
// xhci Capability Registers offset
#define XHCI_CAPS_CAPLENGTH 0x00 // Cap 寄存器组的长度
#define XHCI_CAPS_RESERVED 0x01
@ -85,11 +87,11 @@ struct xhci_port_info_t
uint8_t reserved;
} __attribute__((packed));
struct xhci_controller_t
struct xhci_host_controller_t
{
struct pci_device_structure_general_device_t *pci_dev_hdr; // 指向pci header结构体的指针
int controller_id; // 操作系统给controller的编号
int vbase; // 虚拟地址base（bar0映射到的虚拟地址）
uint64_t vbase; // 虚拟地址base（bar0映射到的虚拟地址）
struct xhci_port_info_t *ports; // 指向端口信息数组的指针
};