пн, 5 дек. 2022 г. в 17:19, Greg KH <gregkh@xxxxxxxxxxxxxxxxxxx>: > > On Sun, Dec 04, 2022 at 08:11:11PM +0200, Oleksii Hryhorovych wrote: > > вс, 4 дек. 2022 г. в 18:53, Greg KH <gregkh@xxxxxxxxxxxxxxxxxxx>: > > > > > > On Sun, Dec 04, 2022 at 06:42:19PM +0200, Oleksii Hryhorovych wrote: > > > > Hi. I have a problem with linux "serial" driver. I`m using a MosChip > > > > 9901 based ExpressCard 34 dual rs-232 controller. When I plugged this > > > > card into my PC, the system detected it, but when I tried to send or > > > > read something from one of the ports, there was silence. Loopback test > > > > also fails. On windows this card works perfectly, so this is not a > > > > hardware issue. My kernel version is "5.15.78-1-MANJARO". > > > > > > How exactly are you trying to send data through the port? What command > > > did you use and what was the result? > > > > > I tried(each test 4 times, trying each device node for each port): > > 1) Execute "cat /dev/ttyS6"(or ttyS7), connect rs-232 cable to port on > > the card and to another PC, then send from another PC something to > > port. > > Result: nothing new appeared in console > > "cat" isn't the best test, minicom is good, as you tried: > > > 2) Connect rs232 cable to port on card and to another PC. Run terminal > > on another PC, run minicom on this PC. Disable flow control. Send > > something to terminal on both PCs. > > Result: nothing appeared in terminals on both PCs. > > 3) Connect pins number 2 and 3 on rs232 port (loopback test). Open > > minicom, disable flow control and send something to the terminal. > > Result: nothing new appeared in the terminal > > 4) Connect pins number 2 and 3 on rs232 port (loopback test). Open > > first console window, run "cat /dev/ttyS6"(or ttyS7). Open second > > window, run "echo "test" > /dev/ttyS6"(or ttyS7). > > Result: nothing new appeared in the first console > > I think the problem is that you do not have a driver attached to your > serial ports, because: > > > > > "dmesg" output about this card: > > > > > > > > [64329.311478] pcieport 0000:00:1c.1: pciehp: Slot(1): Card present > > > > [64329.311485] pcieport 0000:00:1c.1: pciehp: Slot(1): Link Up > > > > [64329.442833] pci 0000:02:00.0: [9710:9901] type 00 class 0x070002 > > > > [64329.442867] pci 0000:02:00.0: reg 0x10: [io 0x0000-0x0007] > > > > [64329.442883] pci 0000:02:00.0: reg 0x14: [mem 0x00000000-0x00000fff] > > > > [64329.442922] pci 0000:02:00.0: reg 0x20: [mem 0x00000000-0x00000fff] > > > > [64329.443096] pci 0000:02:00.0: supports D1 D2 > > > > [64329.443099] pci 0000:02:00.0: PME# supported from D0 D1 D2 D3hot D3cold > > > > [64329.443402] pci 0000:02:00.1: [9710:9901] type 00 class 0x070002 > > > > [64329.443434] pci 0000:02:00.1: reg 0x10: [io 0x0000-0x0007] > > > > [64329.443451] pci 0000:02:00.1: reg 0x14: [mem 0x00000000-0x00000fff] > > > > [64329.443495] pci 0000:02:00.1: reg 0x20: [mem 0x00000000-0x00000fff] > > > > [64329.443679] pci 0000:02:00.1: supports D1 D2 > > > > [64329.443683] pci 0000:02:00.1: PME# supported from D0 D1 D2 D3hot D3cold > > > > [64329.443948] pci 0000:02:00.0: BAR 1: assigned [mem 0xd0000000-0xd0000fff] > > > > [64329.443960] pci 0000:02:00.0: BAR 4: assigned [mem 0xd0001000-0xd0001fff] > > > > [64329.443969] pci 0000:02:00.1: BAR 1: assigned [mem 0xd0002000-0xd0002fff] > > > > [64329.443979] pci 0000:02:00.1: BAR 4: assigned [mem 0xd0003000-0xd0003fff] > > > > [64329.443987] pci 0000:02:00.0: BAR 0: assigned [io 0x2000-0x2007] > > > > [64329.443995] pci 0000:02:00.1: BAR 0: assigned [io 0x2008-0x200f] > > > > [64329.444006] pcieport 0000:00:1c.1: PCI bridge to [bus 02-22] > > > > [64329.444012] pcieport 0000:00:1c.1: bridge window [io 0x2000-0x3fff] > > > > [64329.444017] pcieport 0000:00:1c.1: bridge window [mem > > > > 0xd0000000-0xd3ffffff] > > > > [64329.444023] pcieport 0000:00:1c.1: bridge window [mem > > > > 0xbfb00000-0xbfcfffff 64bit pref] > > > > [64329.444110] serial 0000:02:00.0: enabling device (0000 -> 0003) > > > > [64329.444690] 0000:02:00.0: ttyS6 at I/O 0x2000 (irq = 17, base_baud > > > > = 115200) is a 16550A > > > > [64329.448040] serial 0000:02:00.1: enabling device (0000 -> 0003) > > > > [64329.452843] 0000:02:00.1: ttyS7 at I/O 0x2008 (irq = 18, base_baud > > > > = 115200) is a 16550A > > ttyS6 and ttyS7 seem to be the correct devices, but: > > > > Which tty device node are you using here? > > > > > I tried using both nodes, /dev/ttyS6 and /dev/ttyS7, and the result > > was the same. > > > What does the output of `find /dev/serial/` show? > > > > > /dev/serial/ > > /dev/serial/by-id > > /dev/serial/by-id/usb-HP_HP_hs2340_HSPA+_MobileBroadband_C69366190FA2EB60-if01 > > /dev/serial/by-id/usb-HP_HP_hs2340_HSPA+_MobileBroadband_C69366190FA2EB60-if03 > > /dev/serial/by-id/usb-HP_HP_hs2340_HSPA+_MobileBroadband_C69366190FA2EB60-if09 > > /dev/serial/by-path > > /dev/serial/by-path/pci-0000:00:1a.0-usb-0:1.2:1.9 > > /dev/serial/by-path/pci-0000:00:1a.0-usb-0:1.2:1.1 > > /dev/serial/by-path/pci-0000:00:1a.0-usb-0:1.2:1.3 > > You only have usb-serial devices seen in the system. > > Are you sure the PCI card is being controlled properly? No other kernel > log messages? I'm not sure about it, because I haven't proof of it. But there are no other kernel messages about this card, and no errors in general. > > Is /dev/ttyS6 and ttyS7 present in /dev? Yes. > > What does 'ls -l /sys/class/tty/' show? lrwxrwxrwx 1 root root 0 дек 2 15:03 console -> ../../devices/virtual/tty/console lrwxrwxrwx 1 root root 0 дек 2 15:03 ptmx -> ../../devices/virtual/tty/ptmx lrwxrwxrwx 1 root root 0 дек 2 15:03 tty -> ../../devices/virtual/tty/tty lrwxrwxrwx 1 root root 0 дек 2 15:03 tty0 -> ../../devices/virtual/tty/tty0 lrwxrwxrwx 1 root root 0 дек 2 15:03 tty1 -> ../../devices/virtual/tty/tty1 lrwxrwxrwx 1 root root 0 дек 2 15:03 tty10 -> ../../devices/virtual/tty/tty10 lrwxrwxrwx 1 root root 0 дек 2 15:03 tty11 -> ../../devices/virtual/tty/tty11 lrwxrwxrwx 1 root root 0 дек 2 15:03 tty12 -> ../../devices/virtual/tty/tty12 lrwxrwxrwx 1 root root 0 дек 2 15:03 tty13 -> ../../devices/virtual/tty/tty13 lrwxrwxrwx 1 root root 0 дек 2 15:03 tty14 -> ../../devices/virtual/tty/tty14 lrwxrwxrwx 1 root root 0 дек 2 15:03 tty15 -> ../../devices/virtual/tty/tty15 lrwxrwxrwx 1 root root 0 дек 2 15:03 tty16 -> ../../devices/virtual/tty/tty16 lrwxrwxrwx 1 root root 0 дек 2 15:03 tty17 -> ../../devices/virtual/tty/tty17 lrwxrwxrwx 1 root root 0 дек 2 15:03 tty18 -> ../../devices/virtual/tty/tty18 lrwxrwxrwx 1 root root 0 дек 2 15:03 tty19 -> ../../devices/virtual/tty/tty19 lrwxrwxrwx 1 root root 0 дек 2 15:03 tty2 -> ../../devices/virtual/tty/tty2 lrwxrwxrwx 1 root root 0 дек 2 15:03 tty20 -> ../../devices/virtual/tty/tty20 lrwxrwxrwx 1 root root 0 дек 2 15:03 tty21 -> ../../devices/virtual/tty/tty21 lrwxrwxrwx 1 root root 0 дек 2 15:03 tty22 -> ../../devices/virtual/tty/tty22 lrwxrwxrwx 1 root root 0 дек 2 15:03 tty23 -> ../../devices/virtual/tty/tty23 lrwxrwxrwx 1 root root 0 дек 2 15:03 tty24 -> ../../devices/virtual/tty/tty24 lrwxrwxrwx 1 root root 0 дек 2 15:03 tty25 -> ../../devices/virtual/tty/tty25 lrwxrwxrwx 1 root root 0 дек 2 15:03 tty26 -> ../../devices/virtual/tty/tty26 lrwxrwxrwx 1 root root 0 дек 2 15:03 tty27 -> ../../devices/virtual/tty/tty27 lrwxrwxrwx 1 root root 0 дек 2 15:03 tty28 -> ../../devices/virtual/tty/tty28 lrwxrwxrwx 1 root root 0 дек 2 15:03 tty29 -> ../../devices/virtual/tty/tty29 lrwxrwxrwx 1 root root 0 дек 2 15:03 tty3 -> ../../devices/virtual/tty/tty3 lrwxrwxrwx 1 root root 0 дек 2 15:03 tty30 -> ../../devices/virtual/tty/tty30 lrwxrwxrwx 1 root root 0 дек 2 15:03 tty31 -> ../../devices/virtual/tty/tty31 lrwxrwxrwx 1 root root 0 дек 2 15:03 tty32 -> ../../devices/virtual/tty/tty32 lrwxrwxrwx 1 root root 0 дек 2 15:03 tty33 -> ../../devices/virtual/tty/tty33 lrwxrwxrwx 1 root root 0 дек 2 15:03 tty34 -> ../../devices/virtual/tty/tty34 lrwxrwxrwx 1 root root 0 дек 2 15:03 tty35 -> ../../devices/virtual/tty/tty35 lrwxrwxrwx 1 root root 0 дек 2 15:03 tty36 -> ../../devices/virtual/tty/tty36 lrwxrwxrwx 1 root root 0 дек 2 15:03 tty37 -> ../../devices/virtual/tty/tty37 lrwxrwxrwx 1 root root 0 дек 2 15:03 tty38 -> ../../devices/virtual/tty/tty38 lrwxrwxrwx 1 root root 0 дек 2 15:03 tty39 -> ../../devices/virtual/tty/tty39 lrwxrwxrwx 1 root root 0 дек 2 15:03 tty4 -> ../../devices/virtual/tty/tty4 lrwxrwxrwx 1 root root 0 дек 2 15:03 tty40 -> ../../devices/virtual/tty/tty40 lrwxrwxrwx 1 root root 0 дек 2 15:03 tty41 -> ../../devices/virtual/tty/tty41 lrwxrwxrwx 1 root root 0 дек 2 15:03 tty42 -> ../../devices/virtual/tty/tty42 lrwxrwxrwx 1 root root 0 дек 2 15:03 tty43 -> ../../devices/virtual/tty/tty43 lrwxrwxrwx 1 root root 0 дек 2 15:03 tty44 -> ../../devices/virtual/tty/tty44 lrwxrwxrwx 1 root root 0 дек 2 15:03 tty45 -> ../../devices/virtual/tty/tty45 lrwxrwxrwx 1 root root 0 дек 2 15:03 tty46 -> ../../devices/virtual/tty/tty46 lrwxrwxrwx 1 root root 0 дек 2 15:03 tty47 -> ../../devices/virtual/tty/tty47 lrwxrwxrwx 1 root root 0 дек 2 15:03 tty48 -> ../../devices/virtual/tty/tty48 lrwxrwxrwx 1 root root 0 дек 2 15:03 tty49 -> ../../devices/virtual/tty/tty49 lrwxrwxrwx 1 root root 0 дек 2 15:03 tty5 -> ../../devices/virtual/tty/tty5 lrwxrwxrwx 1 root root 0 дек 2 15:03 tty50 -> ../../devices/virtual/tty/tty50 lrwxrwxrwx 1 root root 0 дек 2 15:03 tty51 -> ../../devices/virtual/tty/tty51 lrwxrwxrwx 1 root root 0 дек 2 15:03 tty52 -> ../../devices/virtual/tty/tty52 lrwxrwxrwx 1 root root 0 дек 2 15:03 tty53 -> ../../devices/virtual/tty/tty53 lrwxrwxrwx 1 root root 0 дек 2 15:03 tty54 -> ../../devices/virtual/tty/tty54 lrwxrwxrwx 1 root root 0 дек 2 15:03 tty55 -> ../../devices/virtual/tty/tty55 lrwxrwxrwx 1 root root 0 дек 2 15:03 tty56 -> ../../devices/virtual/tty/tty56 lrwxrwxrwx 1 root root 0 дек 2 15:03 tty57 -> ../../devices/virtual/tty/tty57 lrwxrwxrwx 1 root root 0 дек 2 15:03 tty58 -> ../../devices/virtual/tty/tty58 lrwxrwxrwx 1 root root 0 дек 2 15:03 tty59 -> ../../devices/virtual/tty/tty59 lrwxrwxrwx 1 root root 0 дек 2 15:03 tty6 -> ../../devices/virtual/tty/tty6 lrwxrwxrwx 1 root root 0 дек 2 15:03 tty60 -> ../../devices/virtual/tty/tty60 lrwxrwxrwx 1 root root 0 дек 2 15:03 tty61 -> ../../devices/virtual/tty/tty61 lrwxrwxrwx 1 root root 0 дек 2 15:03 tty62 -> ../../devices/virtual/tty/tty62 lrwxrwxrwx 1 root root 0 дек 2 15:03 tty63 -> ../../devices/virtual/tty/tty63 lrwxrwxrwx 1 root root 0 дек 2 15:03 tty7 -> ../../devices/virtual/tty/tty7 lrwxrwxrwx 1 root root 0 дек 2 15:03 tty8 -> ../../devices/virtual/tty/tty8 lrwxrwxrwx 1 root root 0 дек 2 15:03 tty9 -> ../../devices/virtual/tty/tty9 lrwxrwxrwx 1 root root 0 дек 2 16:19 ttyACM0 -> ../../devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.2/1-1.2:1.1/tty/ttyACM0 lrwxrwxrwx 1 root root 0 дек 2 16:19 ttyACM1 -> ../../devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.2/1-1.2:1.3/tty/ttyACM1 lrwxrwxrwx 1 root root 0 дек 2 16:19 ttyACM2 -> ../../devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.2/1-1.2:1.9/tty/ttyACM2 lrwxrwxrwx 1 root root 0 дек 2 15:03 ttyS0 -> ../../devices/platform/serial8250/tty/ttyS0 lrwxrwxrwx 1 root root 0 дек 2 15:03 ttyS1 -> ../../devices/platform/serial8250/tty/ttyS1 lrwxrwxrwx 1 root root 0 дек 2 15:03 ttyS10 -> ../../devices/platform/serial8250/tty/ttyS10 lrwxrwxrwx 1 root root 0 дек 2 15:03 ttyS11 -> ../../devices/platform/serial8250/tty/ttyS11 lrwxrwxrwx 1 root root 0 дек 2 15:03 ttyS12 -> ../../devices/platform/serial8250/tty/ttyS12 lrwxrwxrwx 1 root root 0 дек 2 15:03 ttyS13 -> ../../devices/platform/serial8250/tty/ttyS13 lrwxrwxrwx 1 root root 0 дек 2 15:03 ttyS14 -> ../../devices/platform/serial8250/tty/ttyS14 lrwxrwxrwx 1 root root 0 дек 2 15:03 ttyS15 -> ../../devices/platform/serial8250/tty/ttyS15 lrwxrwxrwx 1 root root 0 дек 2 15:03 ttyS16 -> ../../devices/platform/serial8250/tty/ttyS16 lrwxrwxrwx 1 root root 0 дек 2 15:03 ttyS17 -> ../../devices/platform/serial8250/tty/ttyS17 lrwxrwxrwx 1 root root 0 дек 2 15:03 ttyS18 -> ../../devices/platform/serial8250/tty/ttyS18 lrwxrwxrwx 1 root root 0 дек 2 15:03 ttyS19 -> ../../devices/platform/serial8250/tty/ttyS19 lrwxrwxrwx 1 root root 0 дек 2 15:03 ttyS2 -> ../../devices/platform/serial8250/tty/ttyS2 lrwxrwxrwx 1 root root 0 дек 2 15:03 ttyS20 -> ../../devices/platform/serial8250/tty/ttyS20 lrwxrwxrwx 1 root root 0 дек 2 15:03 ttyS21 -> ../../devices/platform/serial8250/tty/ttyS21 lrwxrwxrwx 1 root root 0 дек 2 15:03 ttyS22 -> ../../devices/platform/serial8250/tty/ttyS22 lrwxrwxrwx 1 root root 0 дек 2 15:03 ttyS23 -> ../../devices/platform/serial8250/tty/ttyS23 lrwxrwxrwx 1 root root 0 дек 2 15:03 ttyS24 -> ../../devices/platform/serial8250/tty/ttyS24 lrwxrwxrwx 1 root root 0 дек 2 15:03 ttyS25 -> ../../devices/platform/serial8250/tty/ttyS25 lrwxrwxrwx 1 root root 0 дек 2 15:03 ttyS26 -> ../../devices/platform/serial8250/tty/ttyS26 lrwxrwxrwx 1 root root 0 дек 2 15:03 ttyS27 -> ../../devices/platform/serial8250/tty/ttyS27 lrwxrwxrwx 1 root root 0 дек 2 15:03 ttyS28 -> ../../devices/platform/serial8250/tty/ttyS28 lrwxrwxrwx 1 root root 0 дек 2 15:03 ttyS29 -> ../../devices/platform/serial8250/tty/ttyS29 lrwxrwxrwx 1 root root 0 дек 2 15:03 ttyS3 -> ../../devices/platform/serial8250/tty/ttyS3 lrwxrwxrwx 1 root root 0 дек 2 15:03 ttyS30 -> ../../devices/platform/serial8250/tty/ttyS30 lrwxrwxrwx 1 root root 0 дек 2 15:03 ttyS31 -> ../../devices/platform/serial8250/tty/ttyS31 lrwxrwxrwx 1 root root 0 дек 2 15:03 ttyS4 -> ../../devices/pnp0/00:04/tty/ttyS4 lrwxrwxrwx 1 root root 0 дек 2 15:03 ttyS5 -> ../../devices/pci0000:00/0000:00:16.3/tty/ttyS5 lrwxrwxrwx 1 root root 0 дек 5 18:50 ttyS6 -> ../../devices/pci0000:00/0000:00:1c.1/0000:02:00.0/tty/ttyS6 lrwxrwxrwx 1 root root 0 дек 5 18:50 ttyS7 -> ../../devices/pci0000:00/0000:00:1c.1/0000:02:00.1/tty/ttyS7 lrwxrwxrwx 1 root root 0 дек 2 15:03 ttyS8 -> ../../devices/platform/serial8250/tty/ttyS8 lrwxrwxrwx 1 root root 0 дек 2 15:03 ttyS9 -> ../../devices/platform/serial8250/tty/ttyS9 > > thanks, > > greg k-h
