mirror of
https://github.com/DragonOS-Community/DragonOS.git
synced 2025-06-11 13:16:47 +00:00
xhci控制器初始化(还存在bug,无法reset端口)
This commit is contained in:
parent
c9c8147cdf
commit
fa1c2bd461
@ -25,7 +25,7 @@ struct tm
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struct timespec
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{
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long int tv_sec; // 秒
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long int tv_nsec; // 纳秒
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long long tv_nsec; // 纳秒
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};
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/**
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@ -36,7 +36,7 @@ static void pci_checkBus(uint8_t bus);
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* @brief 生成架构相关的message data
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*
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*/
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#define pci_get_arch_msi_message_data(vector, processor, edge_trigger, assert) ((uint32_t)((vector & 0xff) | (edge_trigger == 1 ? 0 : (1 << 15)) | (assert == 0 ? 0 : (1 << 14))))
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#define pci_get_arch_msi_message_data(vector, processor, edge_trigger, assert) ((uint32_t)((vector & 0xff) | (edge_trigger == 1 ? 0 : (1 << 15)) | ((assert == 0) ? 0 : (1 << 14))))
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/**
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* @brief 从pci配置空间读取信息
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@ -12,6 +12,12 @@
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#define USB_TYPE_UNSPEC 0x80 // Unspecified
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#define USB_TYPE_DEVICE 0xfe // USB Device(Not controller)
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// Reset wait times(milliseconds) ,USB 2.0 specs, page 153, section 7.1.7.5, paragraph 3
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#define USB_TIME_RST_RH 50 // reset on a root hub
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#define USB_TIME_RST_MIN 10 // minimum delay for a reset
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#define USB_TIME_RST_NOMORE 3 // No more than this between resets for root hubs
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#define USB_TIME_RST_REC 10 // reset recovery
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/**
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* @brief 初始化usb驱动程序
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*
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@ -20,6 +20,20 @@ void xhci_hc_irq_disable(uint64_t irq_num);
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uint64_t xhci_hc_irq_install(uint64_t irq_num, void *arg);
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void xhci_hc_irq_uninstall(uint64_t irq_num);
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static int xhci_hc_find_available_id();
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static int xhci_hc_stop(int id);
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static int xhci_hc_reset(int id);
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static int xhci_hc_stop_legacy(int id);
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static int xhci_hc_start_sched(int id);
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static int xhci_hc_stop_sched(int id);
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static uint32_t xhci_hc_get_protocol_offset(int id, uint32_t list_off, const int version, uint32_t *offset, uint32_t *count, uint16_t *protocol_flag);
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static int xhci_hc_pair_ports(int id);
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static uint64_t xhci_create_ring(int trbs);
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static uint64_t xhci_create_event_ring(int trbs, uint64_t *ret_ring_addr);
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void xhci_hc_irq_handler(uint64_t irq_num, uint64_t cid, struct pt_regs *regs);
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static int xhci_hc_init_intr(int id);
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static int xhci_hc_start_ports(int id);
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hardware_intr_controller xhci_hc_intr_controller =
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{
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.enable = xhci_hc_irq_enable,
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@ -210,9 +224,11 @@ static int xhci_hc_stop(int id)
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static int xhci_hc_reset(int id)
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{
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int retval = 0;
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kdebug("usbsts=%#010lx", xhci_read_op_reg32(id, XHCI_OPS_USBSTS));
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// 判断HCHalted是否置位
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if ((xhci_read_op_reg32(id, XHCI_OPS_USBSTS) & (1 << 0)) == 0)
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{
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kdebug("stopping usb hc...");
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// 未置位,需要先尝试停止usb主机控制器
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retval = xhci_hc_stop(id);
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if (unlikely(retval))
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@ -220,8 +236,11 @@ static int xhci_hc_reset(int id)
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}
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int timeout = 500; // wait 500ms
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// reset
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xhci_write_op_reg32(id, XHCI_OPS_USBCMD, (1 << 1));
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uint32_t cmd = xhci_read_op_reg32(id, XHCI_OPS_USBCMD);
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kdebug("cmd=%#010lx", cmd);
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cmd |= (1 << 1);
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xhci_write_op_reg32(id, XHCI_OPS_USBCMD, cmd);
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kdebug("after rst, sts=%#010lx", xhci_read_op_reg32(id, XHCI_OPS_USBSTS));
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while (xhci_read_op_reg32(id, XHCI_OPS_USBCMD) & (1 << 1))
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{
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usleep(1000);
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@ -285,6 +304,7 @@ static int xhci_hc_stop_legacy(int id)
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static int xhci_hc_start_sched(int id)
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{
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xhci_write_op_reg32(id, XHCI_OPS_USBCMD, (1 << 0) | (1 >> 2) | (1 << 3));
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usleep(100 * 1000);
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}
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/**
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@ -331,11 +351,11 @@ static uint32_t xhci_hc_get_protocol_offset(int id, uint32_t list_off, const int
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uint32_t dw2 = xhci_read_cap_reg32(id, list_off + 8);
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if (offset != NULL)
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*offset = (uint32_t)(dw2 & 0xff);
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*offset = (uint32_t)(dw2 & 0xff) - 1; // 使其转换为zero based
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if (count != NULL)
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*count = (uint32_t)((dw2 & 0xff00) >> 8);
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if (protocol_flag != NULL)
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*protocol_flag = (uint16_t)((dw2 >> 16) & 0xffff);
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*protocol_flag = (uint16_t)((dw2 >> 16) & 0x0fff);
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return next_list_off;
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}
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@ -378,7 +398,7 @@ static int xhci_hc_pair_ports(int id)
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{
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for (int i = 0; i < cnt; ++i)
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{
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xhci_hc[id].ports[offset + i].offset = ++xhci_hc[id].port_num_u2;
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xhci_hc[id].ports[offset + i].offset = xhci_hc[id].port_num_u2++;
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xhci_hc[id].ports[offset + i].flags = XHCI_PROTOCOL_USB2;
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// usb2 high speed only
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@ -398,16 +418,16 @@ static int xhci_hc_pair_ports(int id)
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{
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for (int i = 0; i < cnt; ++i)
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{
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xhci_hc[id].ports[offset + i].offset = ++xhci_hc[id].port_num_u3;
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xhci_hc[id].ports[offset + i].offset = xhci_hc[id].port_num_u3++;
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xhci_hc[id].ports[offset + i].flags = XHCI_PROTOCOL_USB3;
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}
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}
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}
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// 将对应的USB2端口和USB3端口进行配对
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for (int i = 1; i <= xhci_hc[id].port_num; ++i)
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for (int i = 0; i < xhci_hc[id].port_num; ++i)
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{
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for (int j = i; j <= xhci_hc[id].port_num; ++j)
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for (int j = 0; j < xhci_hc[id].port_num; ++j)
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{
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if (unlikely(i == j))
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continue;
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@ -424,8 +444,8 @@ static int xhci_hc_pair_ports(int id)
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}
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}
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// 标记所有的usb3端口为激活状态
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for (int i = 1; i <= xhci_hc[id].port_num; ++i)
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// 标记所有的usb3、单独的usb2端口为激活状态
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for (int i = 0; i < xhci_hc[id].port_num; ++i)
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{
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if (XHCI_PORT_IS_USB3(id, i) ||
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(XHCI_PORT_IS_USB2(id, i) && (!XHCI_PORT_HAS_PAIR(id, i))))
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@ -449,8 +469,8 @@ static int xhci_hc_pair_ports(int id)
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}
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else if (XHCI_PORT_IS_USB2(id, i))
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{
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kdebug("USB2 port %d, offset=%d, current port is %s, has pair=%s", i, xhci_hc[id].ports[i].offset,
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XHCI_PORT_IS_ACTIVE(id, i) ? "active" : "inactive", XHCI_PORT_HAS_PAIR(id, i)?"true":"false");
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kdebug("USB2 port %d, offset=%d, current port is %s, has pair=%s", i, xhci_hc[id].ports[i].offset,
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XHCI_PORT_IS_ACTIVE(id, i) ? "active" : "inactive", XHCI_PORT_HAS_PAIR(id, i) ? "true" : "false");
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}
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}
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*/
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@ -511,9 +531,13 @@ void xhci_hc_irq_enable(uint64_t irq_num)
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int cid = xhci_find_hcid_by_irq_num(irq_num);
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if (WARN_ON(cid == -1))
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return;
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kdebug("start msi");
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pci_start_msi(xhci_hc[cid].pci_dev_hdr);
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kdebug("start sched");
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xhci_hc_start_sched(cid);
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kdebug("start ports");
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xhci_hc_start_ports(cid);
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kdebug("enabled");
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}
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void xhci_hc_irq_disable(uint64_t irq_num)
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@ -535,6 +559,7 @@ uint64_t xhci_hc_irq_install(uint64_t irq_num, void *arg)
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struct xhci_hc_irq_install_info_t *info = (struct xhci_hc_irq_install_info_t *)arg;
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pci_enable_msi(xhci_hc[cid].pci_dev_hdr, irq_num, info->processor, info->edge_trigger, info->assert);
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kdebug("xhci irq %d installed.", irq_num);
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return 0;
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}
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@ -559,6 +584,136 @@ void xhci_hc_irq_handler(uint64_t irq_num, uint64_t cid, struct pt_regs *regs)
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kdebug("USB irq received.");
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}
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/**
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* @brief 重置端口
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*
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* @param id 控制器id
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* @param port 端口id
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* @return int
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*/
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static int xhci_reset_port(const int id, const int port)
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{
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int retval = 0;
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// 相对于op寄存器基地址的偏移量
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uint64_t port_status_offset = XHCI_OPS_PRS + port * 16;
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kdebug("to reset %d, offset=%#018lx", port, port_status_offset);
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// 检查端口电源状态
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if ((xhci_read_op_reg32(id, port_status_offset + XHCI_PORT_PORTSC) & (1 << 9)) == 0)
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{
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kdebug("port is power off, starting...");
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xhci_write_cap_reg32(id, port_status_offset + XHCI_PORT_PORTSC, (1 << 9));
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usleep(2000);
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// 检测端口是否被启用, 若未启用,则报错
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if ((xhci_read_op_reg32(id, port_status_offset + XHCI_PORT_PORTSC) & (1 << 9)) == 0)
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{
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kdebug("cannot power on %d", port);
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return -EAGAIN;
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}
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}
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kdebug("port:%d, power check ok", port);
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// 确保端口的status被清0
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xhci_write_op_reg32(id, port_status_offset + XHCI_PORT_PORTSC, (1 << 9) | XHCI_PORTUSB_CHANGE_BITS);
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// 重置当前端口
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if (XHCI_PORT_IS_USB3(id, port))
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xhci_write_op_reg32(id, port_status_offset + XHCI_PORT_PORTSC, (1 << 9) | (1 << 31));
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else
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xhci_write_op_reg32(id, port_status_offset + XHCI_PORT_PORTSC, (1 << 9) | (1 << 4));
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retval = -ETIMEDOUT;
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kdebug("val = %#010lx", xhci_read_op_reg32(id, port_status_offset + XHCI_PORT_PORTSC));
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// 等待portsc的port reset change位被置位,说明reset完成
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int timeout = 200;
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while (timeout)
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{
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uint32_t val = xhci_read_op_reg32(id, port_status_offset + XHCI_PORT_PORTSC);
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// if (timeout % 100)
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// kdebug("val = %#010lx", val);
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if (val & (1 << 21))
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break;
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--timeout;
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usleep(500);
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}
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kdebug("timeout= %d", timeout);
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if (timeout > 0)
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{
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// 等待恢复
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usleep(USB_TIME_RST_REC * 1000);
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uint32_t val = xhci_read_op_reg32(id, port_status_offset + XHCI_PORT_PORTSC);
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// 如果reset之后,enable bit仍然是1,那么说明reset成功
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if (val & (1 << 1))
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{
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// 清除status change bit
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xhci_write_op_reg32(id, port_status_offset + XHCI_PORT_PORTSC, (1 << 9) | XHCI_PORTUSB_CHANGE_BITS);
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}
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retval = 0;
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}
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// 如果usb2端口成功reset,则处理该端口的active状态
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if (retval == 0 && XHCI_PORT_IS_USB2(id, port))
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{
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xhci_hc[id].ports[port].flags |= XHCI_PROTOCOL_ACTIVE;
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if (XHCI_PORT_HAS_PAIR(id, port)) // 如果有对应的usb3端口,则将usb3端口设置为未激活
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xhci_hc[id].ports[xhci_hc[id].ports[port].paired_port_num].flags &= ~(XHCI_PROTOCOL_ACTIVE);
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}
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// 如果usb3端口reset失败,则启用与之配对的usb2端口
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if (retval != 0 && XHCI_PORT_IS_USB3(id, port))
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{
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xhci_hc[id].ports[port].flags &= ~XHCI_PROTOCOL_ACTIVE;
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xhci_hc[id].ports[xhci_hc[id].ports[port].paired_port_num].flags |= XHCI_PROTOCOL_ACTIVE;
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}
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return retval;
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}
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/**
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* @brief 启用xhci控制器的端口
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*
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* @param id 控制器id
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* @return int
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*/
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static int xhci_hc_start_ports(int id)
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{
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int cnt = 0;
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// 注意,这两个循环应该不能合并到一起,因为可能存在usb2端口offset在前,usb3端口在后的情况,那样的话就会出错
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// 循环启动所有的usb3端口
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for (int i = 0; i < xhci_hc[id].port_num; ++i)
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{
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if (XHCI_PORT_IS_USB3(id, i) && XHCI_PORT_IS_ACTIVE(id, i))
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{
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// reset该端口
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if (likely(xhci_reset_port(id, i) == 0)) // 如果端口reset成功,就获取它的描述符
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// 否则,reset函数会把它给设置为未激活,并且标志配对的usb2端口是激活的
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{
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// xhci_hc_get_descriptor(id, i);
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++cnt;
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}
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}
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}
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kdebug("active usb3 ports:%d", cnt);
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// 循环启动所有的usb2端口
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for (int i = 0; i < xhci_hc[id].port_num; ++i)
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{
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if (XHCI_PORT_IS_USB2(id, i) && XHCI_PORT_IS_ACTIVE(id, i))
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{
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// reset该端口
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if (likely(xhci_reset_port(id, i) == 0)) // 如果端口reset成功,就获取它的描述符
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// 否则,reset函数会把它给设置为未激活,并且标志配对的usb2端口是激活的
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{
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// xhci_hc_get_descriptor(id, i);
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++cnt;
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}
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}
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}
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kinfo("xHCI controller %d: Started %d ports.", id, cnt);
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}
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/**
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* @brief 初始化xhci主机控制器的中断控制
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*
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@ -594,18 +749,12 @@ static int xhci_hc_init_intr(int id)
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xhci_write_intr_reg64(id, 0, XHCI_IR_TABLE_ADDR, virt_2_phys(xhci_hc[id].event_ring_table_vaddr)); // 写入table地址
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// 清除状态位
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struct xhci_ops_usbsts_reg_t sts = {0};
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sts.hse = 1;
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sts.eint = 1;
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sts.pcd = 1;
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sts.sre = 1;
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kdebug("new_sts=%#010lx", *(uint32_t *)(&sts));
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xhci_write_op_reg32(id, XHCI_OPS_USBSTS, *(uint32_t *)(&sts));
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xhci_write_op_reg32(id, XHCI_OPS_USBSTS, (1 << 10) | (1 << 4) | (1 << 3) | (1 << 2));
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// 开启usb中断
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// 注册中断处理程序
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struct xhci_hc_irq_install_info_t install_info;
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install_info.assert = 0;
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install_info.assert = 1;
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install_info.edge_trigger = 1;
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install_info.processor = 0; // 投递到bsp
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@ -614,7 +763,7 @@ static int xhci_hc_init_intr(int id)
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sprintk(buf, "xHCI HC%d", id);
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irq_register(xhci_controller_irq_num[id], &install_info, &xhci_hc_irq_handler, id, &xhci_hc_intr_controller, buf);
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kfree(buf);
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kdebug("xhci host controller %d: interrupt registered. irq num=%d", id, xhci_controller_irq_num[id]);
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return 0;
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@ -674,7 +823,7 @@ void xhci_init(struct pci_device_structure_general_device_t *dev_hdr)
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xhci_hc[cid].db_offset = xhci_read_cap_reg32(cid, XHCI_CAPS_DBOFF) & (~0x3); // bits [1:0] reserved
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xhci_hc[cid].rts_offset = xhci_read_cap_reg32(cid, XHCI_CAPS_RTSOFF) & (~0x1f); // bits [4:0] reserved.
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xhci_hc[cid].ext_caps_off = (hcc1.xECP) * 4;
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xhci_hc[cid].ext_caps_off = 1UL * (hcc1.xECP) * 4;
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xhci_hc[cid].context_size = (hcc1.csz) ? 64 : 32;
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if (iversion < 0x95)
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@ -692,15 +841,17 @@ void xhci_init(struct pci_device_structure_general_device_t *dev_hdr)
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pci_write_config(dev_hdr->header.bus, dev_hdr->header.device, dev_hdr->header.func, 0xd0, 0xffffffff);
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}
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// 重置xhci控制器
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FAIL_ON(xhci_hc_reset(cid), failed);
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// 关闭legacy支持
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FAIL_ON(xhci_hc_stop_legacy(cid), failed);
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||||
// 重置xhci控制器
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||||
FAIL_ON(xhci_hc_reset(cid), failed);
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// 端口配对
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||||
FAIL_ON(xhci_hc_pair_ports(cid), failed);
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||||
// ========== 设置USB host controller =========
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||||
// 获取页面大小
|
||||
kdebug("ops pgsize=%#010lx", xhci_read_op_reg32(cid, XHCI_OPS_PAGESIZE));
|
||||
xhci_hc[cid].page_size = (xhci_read_op_reg32(cid, XHCI_OPS_PAGESIZE) & 0xffff) << 12;
|
||||
kdebug("page size=%d", xhci_hc[cid].page_size);
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||||
|
||||
@ -715,7 +866,7 @@ void xhci_init(struct pci_device_structure_general_device_t *dev_hdr)
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||||
goto failed_free_dyn;
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||||
}
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||||
// 写入dcbaap
|
||||
xhci_write_cap_reg64(cid, XHCI_OPS_DCBAAP, virt_2_phys(xhci_hc[cid].dcbaap_vaddr));
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||||
xhci_write_op_reg64(cid, XHCI_OPS_DCBAAP, virt_2_phys(xhci_hc[cid].dcbaap_vaddr));
|
||||
|
||||
// 创建command ring
|
||||
xhci_hc[cid].cmd_ring_vaddr = xhci_create_ring(XHCI_CMND_RING_TRBS);
|
||||
@ -731,7 +882,9 @@ void xhci_init(struct pci_device_structure_general_device_t *dev_hdr)
|
||||
// 写入command ring控制寄存器
|
||||
xhci_write_op_reg64(cid, XHCI_OPS_CRCR, virt_2_phys(xhci_hc[cid].cmd_ring_vaddr) | xhci_hc[cid].cmd_trb_cycle);
|
||||
// 写入配置寄存器
|
||||
xhci_write_op_reg32(cid, XHCI_OPS_CONFIG, hcs1.max_slots);
|
||||
uint32_t max_slots = hcs1.max_slots;
|
||||
kdebug("max slots = %d", max_slots);
|
||||
xhci_write_op_reg32(cid, XHCI_OPS_CONFIG, max_slots);
|
||||
// 写入设备通知控制寄存器
|
||||
xhci_write_op_reg32(cid, XHCI_OPS_DNCTRL, (1 << 1)); // 目前只有N1被支持
|
||||
|
||||
|
@ -323,7 +323,7 @@ struct xhci_intr_moderation_t
|
||||
} __attribute__((packed));
|
||||
// ======== Runtime Register Set END =========
|
||||
|
||||
// ======= xhci Extended Capabilities List ========
|
||||
// ======= xhci Extended Capabilities List BEGIN========
|
||||
|
||||
// ID 部分的含义定义
|
||||
#define XHCI_XECP_ID_RESERVED 0
|
||||
@ -341,6 +341,18 @@ struct xhci_intr_moderation_t
|
||||
#define XHCI_XECP_LEGACY_OS_OWNED (1 << 24) // 当系统控制着该hc时,该位被置位
|
||||
#define XHCI_XECP_LEGACY_OWNING_MASK (XHCI_XECP_LEGACY_BIOS_OWNED | XHCI_XECP_LEGACY_OS_OWNED)
|
||||
|
||||
// ======= xhci Extended Capabilities List END ========
|
||||
|
||||
// ======= Port status and control registers BEGIN ====
|
||||
#define XHCI_PORT_PORTSC 0x00 // Port status and control
|
||||
#define XHCI_PORT_PORTPMSC 0x04 // Port power management status and control
|
||||
#define XHCI_PORT_PORTLI 0x08 // Port Link info
|
||||
#define XHCI_PORT_PORTHLMPC 0x0c // Port hardware LPM control (version 1.10 only
|
||||
|
||||
#define XHCI_PORTUSB_CHANGE_BITS ((1 << 17) | (1 << 18) | (1 << 20) | (1 << 21) | (1 << 22))
|
||||
|
||||
// ======= Port status and control registers END ====
|
||||
|
||||
// 端口信息标志位
|
||||
#define XHCI_PROTOCOL_USB2 0
|
||||
#define XHCI_PROTOCOL_USB3 1
|
||||
@ -374,7 +386,7 @@ struct xhci_host_controller_t
|
||||
uint16_t port_num; // 总的端口数量
|
||||
uint8_t port_num_u2; // usb 2.0端口数量
|
||||
uint8_t port_num_u3; // usb 3端口数量
|
||||
uint8_t page_size; // page size
|
||||
uint32_t page_size; // page size
|
||||
uint64_t dcbaap_vaddr; // Device Context Base Address Array Pointer的虚拟地址
|
||||
uint64_t cmd_ring_vaddr; // command ring的虚拟地址
|
||||
uint64_t event_ring_vaddr; // event ring的虚拟地址
|
||||
|
Loading…
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Reference in New Issue
Block a user