hello at all, at the moment I use development board ML410 with montavistalinux.
I have a problem, please help me! I try to write a linux-driver for writing or reading registers. I have a ace-file, which contents Linux and EDK-project with a component (IP-wizard) which is added on a PLB-bus. I also have a driver-construct which I can register (insmod driver.ko) into the linux-Kernel only if i do not use functions to write or read the bus (XIO_out32() or XIO_in32 () ). If I use this function after registering the driver I got an error. If I try to insert the modul with Insmod driver.ko I get a bus error! my driver is similar to http://ozlabs.org/pipermail/linuxppc-embedded/2006-January/021578.html her the two importent functions of the driver: #define REG_BASE (u32) XPAR_komponente_0_BASEADDR // defined in xparameters_ml41x.h #define REG_HIGH (u32) XPAR_komponente_0_HIGHADDR // defined in xparameters_ml41x.h #define reg0_upper (u32) komponente_SLV_REG0_OFFSET // 32-bit register / defined in komponente.h #define reg1_upper (u32) komponente_SLV_REG1_OFFSET // 32-bit register / defined in komponente.h #define reg2_upper (u32) komponente_SLV_REG2_OFFSET // 32-bit register / defined in komponente.h const static long remap_size = REG_HIGH - REG_BASE + 1; static void read_register_values(void) { static u32 upper; printk("%s:\n",DRIVERNAME); printk("%s: | upper |\n",DRIVERNAME); printk("%s:----------------------|-------------------|\n",DRIVERNAME); upper = XIo_In32(reg_remapped_address + reg1_upper); printk("%s: Daten im Register 35 |%15X |\n", DRIVERNAME, upper ); } static int __init meintreiber_init(void) reg_remapped_address = (u32) ioremap(REG_BASE, remap_size); rtn = misc_register(&miscdev); if (rtn) { printk("%s: %s error driver not reg. \n",DRIVERNAME, miscdev.name); return rtn; } read2_register_values(); in the messeges log file i got the 3 printk lins and this line "upper = XIo_In32(reg_remapped_address + reg1_upper);" creates a error Thank you very much for your kind help! ________________________________________________________________________ Schon gehört? Bei WEB.DE gibt' s viele kostenlose Spiele: http://games.entertainment.web.de/de/entertainment/games/free/index.html _______________________________________________ Linuxppc-embedded mailing list Linuxppc-embedded@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-embedded
