X-Git-Url: http://v3vee.org/palacios/gitweb/gitweb.cgi?a=blobdiff_plain;f=palacios%2Fsrc%2Fdevices%2Fgeneric.c;h=b7d1a181001368de960bf16ee7e17a680bb2341a;hb=0a7690f54cb5bda83780dac26ce433ad24b1d766;hp=ee1562f9e5a16e8b3a5aaab197b52edeb0508e4f;hpb=8983cf1320218fdd8cb3e1c38ea444fa3b041e63;p=palacios.git diff --git a/palacios/src/devices/generic.c b/palacios/src/devices/generic.c index ee1562f..b7d1a18 100644 --- a/palacios/src/devices/generic.c +++ b/palacios/src/devices/generic.c @@ -19,293 +19,284 @@ * redistribute, and modify it as specified in the file "V3VEE_LICENSE". */ -#include #include #include #include +#include +#include - - -#ifndef DEBUG_GENERIC +#ifndef CONFIG_DEBUG_GENERIC #undef PrintDebug #define PrintDebug(fmt, args...) #endif -#define PORT_HOOKS 1 - +typedef enum {GENERIC_IGNORE, + GENERIC_PASSTHROUGH, + GENERIC_PRINT_AND_PASSTHROUGH, + GENERIC_PRINT_AND_IGNORE} generic_mode_t; struct generic_internal { - struct list_head port_list; - uint_t num_port_ranges; - -}; - - -struct port_range { - uint_t start; - uint_t end; - uint_t type; - struct list_head range_link; }; -static int generic_reset_device(struct vm_device * dev) { - PrintDebug("generic: reset device\n"); - return 0; -} - - - - - -static int generic_start_device(struct vm_device * dev) { - PrintDebug("generic: start device\n"); - return 0; -} +static int generic_write_port_passthrough(struct guest_info * core, uint16_t port, void * src, + uint_t length, void * priv_data) { + uint_t i; + switch (length) { + case 1: + v3_outb(port, ((uint8_t *)src)[0]); + break; + case 2: + v3_outw(port, ((uint16_t *)src)[0]); + break; + case 4: + v3_outdw(port, ((uint32_t *)src)[0]); + break; + default: + for (i = 0; i < length; i++) { + v3_outb(port, ((uint8_t *)src)[i]); + } + } -static int generic_stop_device(struct vm_device * dev) { - PrintDebug("generic: stop device\n"); - return 0; + return length; } - - - -static int generic_write_port_passthrough(ushort_t port, - void * src, - uint_t length, - struct vm_device * dev) { +static int generic_write_port_print_and_passthrough(struct guest_info * core, uint16_t port, void * src, + uint_t length, void * priv_data) { uint_t i; + int rc; PrintDebug("generic: writing 0x"); for (i = 0; i < length; i++) { - PrintDebug("%x", ((uchar_t*)src)[i]); + PrintDebug("%x", ((uint8_t *)src)[i]); } PrintDebug(" to port 0x%x ... ", port); + rc=generic_write_port_passthrough(core,port,src,length,priv_data); + + PrintDebug(" done\n"); + + return rc; +} + +static int generic_read_port_passthrough(struct guest_info * core, uint16_t port, void * src, + uint_t length, void * priv_data) { + uint_t i; switch (length) { case 1: - v3_outb(port,((uchar_t*)src)[0]); + ((uint8_t *)src)[0] = v3_inb(port); break; case 2: - v3_outw(port,((ushort_t*)src)[0]); + ((uint16_t *)src)[0] = v3_inw(port); break; case 4: - v3_outdw(port,((uint_t*)src)[0]); + ((uint32_t *)src)[0] = v3_indw(port); break; default: for (i = 0; i < length; i++) { - v3_outb(port, ((uchar_t*)src)[i]); + ((uint8_t *)src)[i] = v3_inb(port); } - } //switch length - + } - PrintDebug(" done\n"); - return length; } -static int generic_read_port_passthrough(ushort_t port, - void * src, - uint_t length, - struct vm_device * dev) { +static int generic_read_port_print_and_passthrough(struct guest_info * core, uint16_t port, void * src, + uint_t length, void * priv_data) { uint_t i; - + int rc; + PrintDebug("generic: reading 0x%x bytes from port 0x%x ...", length, port); - switch (length) { - case 1: - ((uchar_t*)src)[0] = v3_inb(port); - break; - case 2: - ((ushort_t*)src)[0] = v3_inw(port); - break; - case 4: - ((uint_t*)src)[0] = v3_indw(port); - break; - default: - for (i = 0; i < length; i++) { - ((uchar_t*)src)[i] = v3_inb(port); - } - }//switch length + rc=generic_read_port_passthrough(core,port,src,length,priv_data); PrintDebug(" done ... read 0x"); - for (i = 0; i < length; i++) { - PrintDebug("%x", ((uchar_t*)src)[i]); + for (i = 0; i < rc; i++) { + PrintDebug("%x", ((uint8_t *)src)[i]); } PrintDebug("\n"); - return length; + return rc; } -static int generic_write_port_ignore(ushort_t port, - void * src, - uint_t length, - struct vm_device * dev) { - uint_t i; - PrintDebug("generic: writing 0x"); +static int generic_read_port_ignore(struct guest_info * core, uint16_t port, void * src, + uint_t length, void * priv_data) { + + memset((uint8_t *)src, 0, length); - for (i = 0; i < length; i++) { - PrintDebug("%x", ((uchar_t*)src)[i]); - } - - PrintDebug(" to port 0x%x ... ignored\n", port); - return length; } -static int generic_read_port_ignore(ushort_t port, - void * src, - uint_t length, - struct vm_device * dev) { - +static int generic_read_port_print_and_ignore(struct guest_info * core, uint16_t port, void * src, + uint_t length, void * priv_data) { + PrintDebug("generic: reading 0x%x bytes from port 0x%x ...", length, port); - memset((char*)src, 0, length); + memset((uint8_t *)src, 0, length); PrintDebug(" ignored (return zeroed buffer)\n"); return length; } +static int generic_write_port_ignore(struct guest_info * core, uint16_t port, void * src, + uint_t length, void * priv_data) { + return length; +} +static int generic_write_port_print_and_ignore(struct guest_info * core, uint16_t port, void * src, + uint_t length, void * priv_data) { + int i; -static int generic_init_device(struct vm_device * dev) { - struct generic_internal * state = (struct generic_internal *)(dev->private_data); + PrintDebug("generic: writing 0x%x bytes to port 0x%x ", length, port); - PrintDebug("generic: init_device\n"); - generic_reset_device(dev); - - - if (PORT_HOOKS) { // This is a runtime conditional on a #define - struct port_range * tmp = NULL; - - list_for_each_entry(tmp, &(state->port_list), range_link) { - uint_t i = 0; - - PrintDebug("generic: hooking ports 0x%x to 0x%x as %s\n", - tmp->start, tmp->end, - (tmp->type == GENERIC_PRINT_AND_PASSTHROUGH) ? "print-and-passthrough" : "print-and-ignore"); - - for (i = tmp->start; i <= tmp->end; i++) { - if (tmp->type == GENERIC_PRINT_AND_PASSTHROUGH) { - - if (v3_dev_hook_io(dev, i, &generic_read_port_passthrough, &generic_write_port_passthrough)) { - PrintDebug("generic: can't hook port 0x%x (already hooked?)\n", i); - } - - } else if (tmp->type == GENERIC_PRINT_AND_IGNORE) { - - if (v3_dev_hook_io(dev, i, &generic_read_port_ignore, &generic_write_port_ignore)) { - PrintDebug("generic: can't hook port 0x%x (already hooked?)\n", i); - } - } - } + memset((uint8_t *)src, 0, length); + PrintDebug(" ignored - data was: 0x"); - } - } else { - PrintDebug("generic: hooking ports not supported\n"); + for (i = 0; i < length; i++) { + PrintDebug("%x", ((uint8_t *)src)[i]); } + + PrintDebug("\n"); - - return 0; + return length; } -static int generic_deinit_device(struct vm_device * dev) { - struct generic_internal * state = (struct generic_internal *)(dev->private_data); + +static int generic_free(struct generic_internal * state) { PrintDebug("generic: deinit_device\n"); - if (PORT_HOOKS) { - struct port_range * tmp; - struct port_range * cur; - - list_for_each_entry_safe(cur, tmp, &(state->port_list), range_link) { - uint_t i; - - PrintDebug("generic: unhooking ports 0x%x to 0x%x\n", - cur->start, cur->end); - - for (i = cur->start; i <= cur->end; i++) { - if (v3_dev_unhook_io(dev, i)) { - PrintDebug("generic: can't unhook port 0x%x (already unhooked?)\n", i); - } - } + V3_Free(state); + return 0; +} - list_del(&(cur->range_link)); - state->num_port_ranges--; - V3_Free(cur); - } - } else { - PrintDebug("generic: unhooking ports not supported\n"); - } - generic_reset_device(dev); - return 0; -} +static struct v3_device_ops dev_ops = { + .free = (int (*)(void *))generic_free, +}; -static struct vm_device_ops dev_ops = { - .init = generic_init_device, - .deinit = generic_deinit_device, - .reset = generic_reset_device, - .start = generic_start_device, - .stop = generic_stop_device, -}; +static int add_port_range(struct vm_device * dev, uint_t start, uint_t end, generic_mode_t mode) { + uint_t i = 0; + + PrintDebug("generic: Adding Port Range: 0x%x to 0x%x as %s\n", + start, end, + (mode == GENERIC_PRINT_AND_PASSTHROUGH) ? "print-and-passthrough" : "print-and-ignore"); + + for (i = start; i <= end; i++) { + if (mode == GENERIC_PRINT_AND_PASSTHROUGH) { + if (v3_dev_hook_io(dev, i, + &generic_read_port_print_and_passthrough, + &generic_write_port_print_and_passthrough) == -1) { + PrintError("generic: can't hook port 0x%x (already hooked?)\n", i); + return -1; + } + } else if (mode == GENERIC_PRINT_AND_IGNORE) { + if (v3_dev_hook_io(dev, i, + &generic_read_port_print_and_ignore, + &generic_write_port_print_and_ignore) == -1) { + PrintError("generic: can't hook port 0x%x (already hooked?)\n", i); + return -1; + } + } else if (mode == GENERIC_PASSTHROUGH) { + if (v3_dev_hook_io(dev, i, + &generic_read_port_passthrough, + &generic_write_port_passthrough) == -1) { + PrintError("generic: can't hook port 0x%x (already hooked?)\n", i); + return -1; + } + } else if (mode == GENERIC_IGNORE) { + if (v3_dev_hook_io(dev, i, + &generic_read_port_ignore, + &generic_write_port_ignore) == -1) { + PrintError("generic: can't hook port 0x%x (already hooked?)\n", i); + return -1; + } + } + } + + return 0; +} + + +static int generic_init(struct v3_vm_info * vm, v3_cfg_tree_t * cfg) { + struct generic_internal * state = NULL; + char * dev_id = v3_cfg_val(cfg, "ID"); + v3_cfg_tree_t * port_cfg = v3_cfg_subtree(cfg, "ports"); -int v3_generic_add_port_range(struct vm_device * dev, uint_t start, uint_t end, uint_t type) { - if (PORT_HOOKS) { - struct generic_internal * state = (struct generic_internal *)(dev->private_data); + state = (struct generic_internal *)V3_Malloc(sizeof(struct generic_internal)); - struct port_range * range = (struct port_range *)V3_Malloc(sizeof(struct port_range)); - range->start = start; - range->end = end; - range->type = type; + if (state == NULL) { + PrintError("Could not allocate generic state\n"); + return -1; + } - - PrintDebug("generic: Adding Port Range: 0x%x to 0x%x as %s\n", - range->start, range->end, - (range->type == GENERIC_PRINT_AND_PASSTHROUGH) ? "print-and-passthrough" : "print-and-ignore"); + memset(state, 0, sizeof(struct generic_internal)); - list_add(&(range->range_link), &(state->port_list)); - state->num_port_ranges++; - } else { - PrintDebug("generic: hooking IO ports not supported\n"); + struct vm_device * dev = v3_add_device(vm, dev_id, &dev_ops, state); + + if (dev == NULL) { + PrintError("Could not attach device %s\n", dev_id); + V3_Free(state); return -1; } - return 0; -} + PrintDebug("generic: init_device\n"); -struct vm_device * v3_create_generic() { - struct generic_internal * generic_state = (struct generic_internal *)V3_Malloc(sizeof(struct generic_internal)); - - generic_state->num_port_ranges = 0; + // scan port list.... + while (port_cfg) { + uint16_t start = atox(v3_cfg_val(port_cfg, "start")); + uint16_t end = atox(v3_cfg_val(port_cfg, "end")); + char * mode_str = v3_cfg_val(port_cfg, "mode"); + generic_mode_t mode = GENERIC_IGNORE; + + if (strcasecmp(mode_str, "print_and_ignore") == 0) { + mode = GENERIC_PRINT_AND_IGNORE; + } else if (strcasecmp(mode_str, "print_and_passthrough") == 0) { + mode = GENERIC_PRINT_AND_PASSTHROUGH; + } else if (strcasecmp(mode_str, "passthrough") == 0) { + mode = GENERIC_PASSTHROUGH; + } else if (strcasecmp(mode_str, "ignore") == 0) { + mode = GENERIC_IGNORE; + } else { + PrintError("Invalid Mode %s\n", mode_str); + v3_remove_device(dev); + return -1; + } + + if (add_port_range(dev, start, end, mode) == -1) { + PrintError("Could not add port range %d-%d\n", start, end); + v3_remove_device(dev); + return -1; + } - INIT_LIST_HEAD(&(generic_state->port_list)); - - struct vm_device * device = v3_create_device("GENERIC", &dev_ops, generic_state); + port_cfg = v3_cfg_next_branch(port_cfg); + } - return device; + + return 0; } + +device_register("GENERIC", generic_init)