My apology that I have to continue the discussion from the old thread: ( http://sel4.systems/pipermail/devel/2016-October/001056.html). My goal is to read and write data from/to micro sd in SabreLite platform. I tried both Adrain and Anna's suggestions in that thread and they dont seem to fix the problem. Nothing returns error and I also changed cacheable parameter in sel4utils_new_pages_at_vaddr to 0 (I believe this is what Anna meant instead of setting 3rd argument of vspace_new_pages).
The code's still stuck inside mmc_block_read function. I tracked it down and it seems like BRR and BWR interrupt statuses are never set to 1 I add my code below, please let me know if anything is wrong with my code.
ps_io_mapper_t io_mapper = {0}; error = sel4platsupport_new_io_mapper(simple, vspace, vka, &io_mapper); assert(error == 0);
ps_io_ops_t io_ops = { .io_mapper = io_mapper };
sdio_host_dev_t* dev = (sdio_host_dev_t*) malloc(sizeof(*dev)); assert(dev != NULL); memset(dev, 0, sizeof(*dev));
enum sdio_id id = sdio_default_id(); // return id=3 error = sdio_init(id, &io_ops, dev); assert(error == 0);
mmc_card_t* mmc_card = (mmc_card_t*) malloc(sizeof(*mmc_card)); error = mmc_init(dev, &io_ops, mmc_card); assert(error == 0 && mmc_card != NULL);
void *vaddr = vspace_new_pages(&vspace, seL4_AllRights, 5, seL4_PageBits); assert(vaddr != NULL);
uintptr_t paddr = 0; printf("mmc card capacity %llu bytes\n", mmc_card_capacity(*mmc_card)); long read_len = mmc_block_read(*mmc_card, 0x50000, 1, vaddr, paddr, NULL, NULL); // Stuck here printf("read %lu bytes\n", read_len);
Thanks Oak