| 51,8 → 51,12 |
|---|
| #include <align.h> |
| #include <async.h> |
| #include <futex.h> |
| #include <stdio.h> |
| #include <ipc/devmap.h> |
| #include "rd.h" |
| |
| #define NAME "rd" |
| |
| /** Pointer to the ramdisk's image. */ |
| static void *rd_addr; |
| /** Size of the ramdisk. */ |
| 104,7 → 108,8 |
|---|
| * Now we wait for the client to send us its communication as_area. |
| */ |
| size_t size; |
| if (ipc_share_out_receive(&callid, &size, NULL)) { |
| int flags; |
| if (ipc_share_out_receive(&callid, &size, &flags)) { |
| if (size >= BLOCK_SIZE) { |
| /* |
| * The client sends an as_area that can absorb the whole |
| 149,7 → 154,7 |
|---|
| break; |
| } |
| futex_down(&rd_futex); |
| memcpy(fs_va, rd_addr + offset, BLOCK_SIZE); |
| memcpy(fs_va, rd_addr + offset * BLOCK_SIZE, BLOCK_SIZE); |
| futex_up(&rd_futex); |
| retval = EOK; |
| break; |
| 163,7 → 168,7 |
|---|
| break; |
| } |
| futex_up(&rd_futex); |
| memcpy(rd_addr + offset, fs_va, BLOCK_SIZE); |
| memcpy(rd_addr + offset * BLOCK_SIZE, fs_va, BLOCK_SIZE); |
| futex_down(&rd_futex); |
| retval = EOK; |
| break; |
| 181,46 → 186,119 |
|---|
| } |
| } |
| |
| static int driver_register(char *name) |
| { |
| ipcarg_t retval; |
| aid_t req; |
| ipc_call_t answer; |
| int phone; |
| ipcarg_t callback_phonehash; |
| |
| phone = ipc_connect_me_to(PHONE_NS, SERVICE_DEVMAP, DEVMAP_DRIVER, 0); |
| |
| while (phone < 0) { |
| usleep(10000); |
| phone = ipc_connect_me_to(PHONE_NS, SERVICE_DEVMAP, |
| DEVMAP_DRIVER, 0); |
| } |
| |
| req = async_send_2(phone, DEVMAP_DRIVER_REGISTER, 0, 0, &answer); |
| |
| retval = ipc_data_write_start(phone, (char *) name, strlen(name) + 1); |
| |
| if (retval != EOK) { |
| async_wait_for(req, NULL); |
| return -1; |
| } |
| |
| async_set_client_connection(rd_connection); |
| |
| ipc_connect_to_me(phone, 0, 0, 0, &callback_phonehash); |
| async_wait_for(req, &retval); |
| |
| return phone; |
| } |
| |
| static int device_register(int driver_phone, char *name, int *handle) |
| { |
| ipcarg_t retval; |
| aid_t req; |
| ipc_call_t answer; |
| |
| req = async_send_2(driver_phone, DEVMAP_DEVICE_REGISTER, 0, 0, &answer); |
| |
| retval = ipc_data_write_start(driver_phone, (char *) name, strlen(name) + 1); |
| |
| if (retval != EOK) { |
| async_wait_for(req, NULL); |
| return retval; |
| } |
| |
| async_wait_for(req, &retval); |
| |
| if (handle != NULL) |
| *handle = -1; |
| |
| if (EOK == retval) { |
| if (NULL != handle) |
| *handle = (int) IPC_GET_ARG1(answer); |
| } |
| |
| return retval; |
| } |
| |
| /** Prepare the ramdisk image for operation. */ |
| static bool rd_init(void) |
| { |
| int retval, flags; |
| |
| rd_size = sysinfo_value("rd.size"); |
| void *rd_ph_addr = (void *) sysinfo_value("rd.address.physical"); |
| |
| if (rd_size == 0) |
| if (rd_size == 0) { |
| printf(NAME ": No RAM disk found\n"); |
| return false; |
| } |
| |
| rd_addr = as_get_mappable_page(rd_size); |
| |
| flags = AS_AREA_READ | AS_AREA_WRITE | AS_AREA_CACHEABLE; |
| retval = physmem_map(rd_ph_addr, rd_addr, |
| int flags = AS_AREA_READ | AS_AREA_WRITE | AS_AREA_CACHEABLE; |
| int retval = physmem_map(rd_ph_addr, rd_addr, |
| ALIGN_UP(rd_size, PAGE_SIZE) >> PAGE_WIDTH, flags); |
| |
| if (retval < 0) |
| if (retval < 0) { |
| printf(NAME ": Error mapping RAM disk\n"); |
| return false; |
| } |
| |
| printf(NAME ": Found RAM disk at %p, %d bytes\n", rd_ph_addr, rd_size); |
| |
| int driver_phone = driver_register(NAME); |
| if (driver_phone < 0) { |
| printf(NAME ": Unable to register driver\n"); |
| return false; |
| } |
| |
| int dev_handle; |
| if (EOK != device_register(driver_phone, "initrd", &dev_handle)) { |
| ipc_hangup(driver_phone); |
| printf(NAME ": Unable to register device\n"); |
| return false; |
| } |
| |
| return true; |
| } |
| |
| int main(int argc, char **argv) |
| { |
| if (rd_init()) { |
| ipcarg_t phonead; |
| |
| async_set_client_connection(rd_connection); |
| |
| /* Register service at nameserver */ |
| if (ipc_connect_to_me(PHONE_NS, SERVICE_RD, 0, 0, &phonead) != 0) |
| return -1; |
| |
| async_manager(); |
| |
| /* Never reached */ |
| return 0; |
| } |
| printf(NAME ": HelenOS RAM disk server\n"); |
| |
| return -1; |
| if (!rd_init()) |
| return -1; |
| |
| printf(NAME ": Accepting connections\n"); |
| async_manager(); |
| |
| /* Never reached */ |
| return 0; |
| } |
| |
| /** |