diff options
Diffstat (limited to 'bsps/powerpc/mpc55xxevb/net/if_smc.c')
| -rw-r--r-- | bsps/powerpc/mpc55xxevb/net/if_smc.c | 161 |
1 files changed, 161 insertions, 0 deletions
diff --git a/bsps/powerpc/mpc55xxevb/net/if_smc.c b/bsps/powerpc/mpc55xxevb/net/if_smc.c new file mode 100644 index 0000000000..995bf0b1b0 --- /dev/null +++ b/bsps/powerpc/mpc55xxevb/net/if_smc.c @@ -0,0 +1,161 @@ +#include <bsp.h> + +#ifdef HAS_SMC91111 + +#include <mpc55xx/mpc55xx.h> +#include <mpc55xx/regs.h> + +#include <rtems.h> + +#include <bsp/irq.h> +#include <rtems/bspIo.h> +#include <libcpu/powerpc-utility.h> + + +#include <stdlib.h> +#include <stdio.h> +#include <stdarg.h> +#include <rtems/error.h> +#include <rtems/rtems_bsdnet.h> +#include <rtems/irq-extension.h> + +#include <sys/param.h> +#include <sys/mbuf.h> + +#include <sys/socket.h> +#include <sys/sockio.h> +#include <net/if.h> +#include <netinet/in.h> +#include <netinet/if_ether.h> + +#include <libchip/smc91111exp.h> + + + +/* The SMC91111 on the MPC5554SOM is IRQ2. + */ +#define SMC91111_BASE_ADDR (void*)0x22000300 +#define SMC91111_BASE_IRQ MPC55XX_IRQ_SIU_EXTERNAL_2 +#define SMC91111_BASE_PIO 4 + +extern void lan91cxx_interrupt_handler(void *arg); + +static const union SIU_EISR_tag clear_eisr_2 = {.B.EIF2 = 1}; + +static void rtems_smc91111_interrupt_wrapper(void *arg) +{ + /* Clear external interrupt status */ + + SIU.EISR = clear_eisr_2; + + lan91cxx_interrupt_handler(arg); +} + +scmv91111_configuration_t mpc5554_scmv91111_configuration = { + SMC91111_BASE_ADDR, /* base address */ + SMC91111_BASE_IRQ, /* vector number */ + SMC91111_BASE_PIO, /* XXX: What's this? */ + 100, /* 100b */ + 1, /* fulldx */ + 1, /* autoneg */ + "SMC91111", + RTEMS_INTERRUPT_UNIQUE, + rtems_smc91111_interrupt_wrapper, + (void *)0 +}; + +/* + * Attach an SMC91111 driver to the system + */ +int rtems_smc91111_driver_attach_mpc5554(struct rtems_bsdnet_ifconfig *config) +{ + /* Configure IRQ2 (GPIO pin 211) is set up properly: + * Secondary, Alternate, Input. + */ + static const union SIU_PCR_tag irq_input_pcr = { + .B.PA = 2, /* Alternate function 1 */ + .B.OBE = 0, + .B.IBE = 1, /* Input Buffer Enable */ + .B.DSC = 0, + .B.ODE = 0, + .B.HYS = 1, + .B.SRC = 3, /* Maximum slew rate */ + .B.WPE = 0, /* Disable weak pullup/pulldown */ + .B.WPS = 1 /* Specify weak pullup? But it isn't enabled! */ + }; + + union SIU_ORER_tag orer = MPC55XX_ZERO_FLAGS; + union SIU_DIRER_tag direr = MPC55XX_ZERO_FLAGS; + union SIU_IREER_tag ireer = MPC55XX_ZERO_FLAGS; + union SIU_IFEER_tag ifeer = MPC55XX_ZERO_FLAGS; + union SIU_IDFR_tag idfr = MPC55XX_ZERO_FLAGS; + union SIU_DIRSR_tag dirsr = MPC55XX_ZERO_FLAGS; + rtems_interrupt_level level; + +#define MPC55XX_EBI_CS_2_BR 0x22000003 +#define MPC55XX_EBI_CS_2_OR 0xff000010 +#if MPC55XX_EBI_CS_2_BR + static const union SIU_PCR_tag primary_50pf_weak_pullup = { /* 0x4c3 */ + .B.PA = 1, + .B.DSC = 3, + .B.WPE = 1, + .B.WPS = 1 + }; + EBI.CS[2].BR.R = MPC55XX_EBI_CS_2_BR; + EBI.CS[2].OR.R = MPC55XX_EBI_CS_2_OR; + SIU.PCR[2] = primary_50pf_weak_pullup; +#endif + + SIU.PCR[211] = irq_input_pcr; + + /* XXX These should be using bit set and bit clear instructions */ + + /* DMA/Interrupt Request Select */ + rtems_interrupt_disable(level); + dirsr.R = SIU.DIRSR.R; + dirsr.B.DIRS2 = 0; /* Select interrupt not DMA */ + SIU.DIRSR.R = dirsr.R; + rtems_interrupt_enable(level); + + /* Overrun Request Enable */ + rtems_interrupt_disable(level); + orer.R = SIU.ORER.R; + orer.B.ORE2 = 0; /* Disable overruns. */ + SIU.ORER.R = orer.R; + rtems_interrupt_enable(level); + + /* IRQ Rising-Edge Enable */ + rtems_interrupt_disable(level); + ireer.R = SIU.IREER.R; + ireer.B.IREE2 = 1; /* Enable rising edge. */ + SIU.IREER.R = ireer.R; + rtems_interrupt_enable(level); + + /* IRQ Falling-Edge Enable */ + rtems_interrupt_disable(level); + ifeer.R = SIU.IFEER.R; + ifeer.B.IFEE2 = 0; /* Disable falling edge. */ + SIU.IFEER.R = ifeer.R; + rtems_interrupt_enable(level); + + /* IRQ Digital Filter */ + rtems_interrupt_disable(level); + idfr.R = SIU.IDFR.R; + idfr.B.DFL = 0; /* Minimal digital filter. */ + SIU.IDFR.R = idfr.R; + rtems_interrupt_enable(level); + + /* Clear external interrupt status */ + SIU.EISR = clear_eisr_2; + + /* DMA/Interrupt Request Enable */ + rtems_interrupt_disable(level); + direr.R = SIU.DIRER.R; + direr.B.EIRE2 = 1; /* Enable. */ + SIU.DIRER.R = direr.R; + rtems_interrupt_enable(level); + + return _rtems_smc91111_driver_attach(config,&mpc5554_scmv91111_configuration); +}; + +#endif /* HAS_SMC91111 */ |