串口打开log
root@ImmortalWrt:/# microcom -s 115200 /dev/stty_nr31
[ 524.757880] spipe 1-6 not ready to open!
microcom: can't open '/dev/stty_nr31': No such device
root@ImmortalWrt:/#
pci查询设备
root@ImmortalWrt:/# lspci
00:00.0 Class 0604: 14c3:1f32
00:00.0 Class 0002: 14c3:7986
01:00.0 Class 0d80: 16c3:abcd
root@ImmortalWrt:/#
完整的kernel log
MobaXterm_COM5USB-SERIALCH340COM5_20250207_120205.txt (146.2 KB)
[ 9.660593] sprd-pcie-ep-device 0001:01:00.0: pci alloc msi irq cnt = 32
[ 9.667286] sprd-pcie-ep-device 0001:01:00.0: ep: BAR[0] [mem 0x20000000-0x23ffffff pref]
[ 9.675450] sprd-pcie-ep-device 0001:01:00.0: ep: BAR[1] [mem 0x26100000-0x2610ffff]
[ 9.683180] sprd-pcie-ep-device 0001:01:00.0: ep: BAR[2] [mem 0x24000000-0x25ffffff pref]
[ 9.691346] sprd-pcie-ep-device 0001:01:00.0: ep: BAR[3] [mem 0x26110000-0x2611ffff]
[ 9.699077] sprd-pcie-ep-device 0001:01:00.0: ep: BAR[4] [mem 0x26000000-0x260fffff]
[ 9.706807] sprd-pcie-ep-device 0001:01:00.0: ep: BAR[5] [mem 0x26120000-0x2612ffff]
[ 9.714557] sprd-pcie-ep-device 0001:01:00.0: ep: atu_view_port val = 0xffffffff
[ 9.721941] sprd-pcie-ep-device 0001:01:00.0: ep: request IRQ = 135, cnt =32
这里第二次中断申请失败要查下。
1.Make file内容如下
#
# Makefile for the sprd staging modem files
#
EXTRA_CFLAGS += -Wno-error -Wno-packed-bitfield-compat -Wno-unused-result -Wno-format
ccflags-y += -DCONFIG_SPRD_PCIE_EP_DEVICE
ccflags-y += -DCONFIG_SPRD_SIPA
########## Option feature ##########
# For NSS feature of some Qualcom platform(eg.ipq5018)
#ccflags-y += -DCONFIG_QCA_NSS_DRV
# define is normal mode, net dev type is ethernet;
# undefine is direct mode, net dev type is rawip, should set module to direct by
# using AT command[AT+QCFG="pcie/direct",1];
ccflags-y += -DCONFIG_SPRD_ETHERNET
# For pcie msi type interrupt
ccflags-y += -DCONFIG_PCI_IRQ_MSI
# For big endian platform
#ccflags-y += -DCONFIG_SIPC_BIG_TO_LITTLE
obj-m += sprd_pcie.o
sprd_pcie-objs := pcie/sprd_pcie_ep_device.o pcie/pcie_host_resource.o pcie/sprd_pcie_quirks.o sipc/sipc.o sipc/sblock.o sipc/sbuf.o \
sipc/sipc_debugfs.o sipc/smem.o sipc/smsg.o sipc/spipe.o sipc/spool.o power_manager/power_manager.o \
sipa/sipa_core.o sipa/sipa_eth.o sipa/sipa_nic.o sipa/sipa_skb_send.o sipa/sipa_skb_recv.o sipa/sipa_dummy.o sipa/sipa_debugfs.o sipa/sipa_dele_cmn.o \
sipa/sipa_phy_v0/sipa_fifo_irq_hal.o sipa/sipa_phy_v0/sipa_common_fifo_hal.o
PWD := $(shell pwd)
ifeq ($(ARCH),)
ARCH := $(shell uname -m)
endif
ifeq ($(CROSS_COMPILE),)
CROSS_COMPILE :=
endif
ifeq ($(KDIR),)
KDIR := /lib/modules/$(shell uname -r)/build
endif
sprd_pcie: clean
$(MAKE) ARCH=${ARCH} CROSS_COMPILE=${CROSS_COMPILE} -C $(KDIR) M=$(PWD) modules
clean:
$(MAKE) ARCH=${ARCH} CROSS_COMPILE=${CROSS_COMPILE} -C $(KDIR) M=$(PWD) clean
find . -name *.o.ur-safe | xargs rm -f
install: sprd_pcie
sudo cp sprd_pcie.ko /lib/modules/${shell uname -r}/kernel/drivers/pci/
sudo depmod
2.已经切换成EP模式了
AT+QCFG="pcie/mode"
+QCFG: "pcie/mode",0
OK
这个也注释掉。这个驱动一般不能编译成内核模块，一般要built-in.
ccflags-y += -DCONFIG_PCI_IRQ_MSI如果注释掉，中断请求就没有了，lspci命令就找到不到模块ID了，
--- PCI support │ │
│ │ [ ] PCI Express Port Bus support │ │
│ │ -*- Message Signaled Interrupts (MSI and MSI-X) │ │
│ │ [*] Enable PCI quirk workarounds │ │
│ │ [ ] PCI Debugging │ │
│ │ < > PCI Stub driver │ │
│ │ [ ] PCI disable common quirks │ │
│ │ [ ] PCI IOV support │ │
│ │ [ ] PCI PRI support │ │
│ │ [ ] PCI PASID support │ │
│ │ [ ] Support for PCI Hotplug ---- │ │
│ │ PCI controller drivers ---> │ │
│ │ PCI Endpoint ---> │ │
│ │ PCI switch controller drivers ---> │ │
ap端pci配置如上
已经编译成built-in
已上传完整log
kernel_log_没有注释DCONFIG_PCI_IRQ_MS.txt (296.7 KB)
kernel_log_注释DCONFIG_PCI_IRQ_MS.txt (289.8 KB)
我看上面的那份log 没有报错了。
看看打开/dev/stty_nr31 有什么报错和内核的打印。
看看中断 cat /proc/interrupts
回复晚了，现在可以打开串口了
重新上传一下log
注释Makefile CONFIG_PCI_IRQ_MSI
kernel配置
--- PCI support │ │
│ │ [*] PCI Express Port Bus support │ │
│ │ [ ] PCI Express Advanced Error Reporting support │ │
│ │ [ ] PCI Express ASPM control │ │
│ │ [ ] PCI Express Precision Time Measurement support │ │
│ │ [ ] PCI Express Bandwidth Change Notification │ │
│ │ -*- Message Signaled Interrupts (MSI and MSI-X) │ │
│ │ [*] Enable PCI quirk workarounds │ │
│ │ [*] PCI Debugging │ │
│ │ < > PCI Stub driver │ │
│ │ [ ] PCI disable common quirks │ │
│ │ [ ] PCI IOV support │ │
│ │ [ ] PCI PRI support │ │
│ │ [ ] PCI PASID support │ │
│ │ [ ] Support for PCI Hotplug ---- │ │
│ │ PCI controller drivers ---> │ │
│ │ PCI Endpoint ---> │ │
│ │ PCI switch controller drivers --->
[kernel_log_注释DCONFIG_PCI_IRQ_MS_20250217_184703.txt|attachment](upload://m3ShajbZjckkI6QB0l11MN25GUF.txt) (148.5 KB)
打开stty_nr31
root@ImmortalWrt:/# microcom -s 115200 /dev/stty_nr31
+CPIN: NOT INSERTED
+CFUN: 1
ATI
Quectel
RM500U-CN
Revision: RM500UCNCBR03A03M2G
OK
查看中断
root@ImmortalWrt:/# cat proc/interrupts
CPU0 CPU1 CPU2 CPU3
3: 53692 15923 16406 11116 GICv3 30 Level arch_timer
6: 701 0 0 30724 GICv3 237 Level 0000:00:00.0
8: 600 0 0 0 GICv3 243 Level ccif_wo_isr
10: 0 0 0 0 GICv3 142 Level wdt_bark
12: 193 0 0 0 GICv3 155 Level ttyS0
15: 0 0 0 0 GICv3 168 Level i2c-mt65xx
18: 0 0 0 0 GICv3 148 Level 10320000.crypto
19: 0 0 0 0 GICv3 149 Level 10320000.crypto
20: 0 0 0 0 GICv3 150 Level 10320000.crypto
21: 0 0 0 0 GICv3 151 Level 10320000.crypto
125: 10 317 0 0 GICv3 229 Level 15100000.ethernet
126: 634 0 0 0 GICv3 230 Level 15100000.ethernet
127: 0 0 0 0 GICv3 231 Level 15100000.ethernet
132: 2579 0 0 0 GICv3 175 Level 11230000.mmc
133: 0 0 0 0 GICv3 205 Level xhci-hcd:usb1
135: 102 0 0 0 INTx 0 Edge -INTx sprd-pcie-ep-device
136: 0 0 0 0 MSI 134217728 Edge PCIe PME
IPI0: 5972 11440 6094 8257 Rescheduling interrupts
IPI1: 241 692 496 593 Function call interrupts
IPI2: 0 0 0 0 CPU stop interrupts
IPI3: 0 0 0 0 CPU stop (for crash dump) interrupts
IPI4: 0 0 0 0 Timer broadcast interrupts
IPI5: 5 0 0 2 IRQ work interrupts
IPI6: 0 0 0 0 CPU wake-up interrupts
Err: 0
好的。理论上MSI和INTx都可以，不过好多客户使用MSI都没成功。
可以试下网卡和上网的功能。