X-Git-Url: http://v3vee.org/palacios/gitweb/gitweb.cgi?a=blobdiff_plain;f=palacios%2Fsrc%2Fdevices%2Fgeneric.c;h=1e06a80936776e82baf148edf19c65b3a58d6a1d;hb=9e70ba8a6d2bae61d62c99cbab56753cf1440716;hp=7a70e5d81c13bf960fdf5afab029231722b0e17b;hpb=33717ee76445b728dfa74df98863f14118c8d41d;p=palacios.git diff --git a/palacios/src/devices/generic.c b/palacios/src/devices/generic.c index 7a70e5d..1e06a80 100644 --- a/palacios/src/devices/generic.c +++ b/palacios/src/devices/generic.c @@ -19,181 +19,448 @@ * redistribute, and modify it as specified in the file "V3VEE_LICENSE". */ -#include #include #include #include +#include +#include +#include +#ifdef V3_CONFIG_HOST_DEVICE +#include +#endif - -#ifndef DEBUG_GENERIC +#ifndef V3_CONFIG_DEBUG_GENERIC #undef PrintDebug #define PrintDebug(fmt, args...) #endif +#define MAX_NAME 32 +#define MAX_MEM_HOOKS 16 + +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; + enum {GENERIC_PHYSICAL, GENERIC_HOST} forward_type; +#ifdef V3_CONFIG_HOST_DEVICE + v3_host_dev_t host_dev; +#endif + struct vm_device *dev; // me + char name[MAX_NAME]; + + uint32_t num_mem_hooks; + addr_t mem_hook[MAX_MEM_HOOKS]; }; -struct port_range { - uint_t start; - uint_t end; - uint_t type; - struct list_head range_link; -}; - +static int generic_write_port_passthrough(struct guest_info * core, + uint16_t port, + void * src, + uint_t length, + void * priv_data) +{ + struct generic_internal *state = (struct generic_internal *) priv_data; + uint_t i; -static int generic_reset_device(struct vm_device * dev) { - PrintDebug("generic: reset device\n"); - return 0; + switch (state->forward_type) { + case GENERIC_PHYSICAL: + 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]); + } + break; + } + return length; + break; +#ifdef V3_CONFIG_HOST_DEVICE + case GENERIC_HOST: + if (state->host_dev) { + return v3_host_dev_write_io(state->host_dev,port,src,length); + } else { + return -1; + } + break; +#endif + default: + PrintError(core->vm_info, core, "generic (%s): unknown forwarding type\n", state->name); + return -1; + break; + } } +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; +#ifdef V3_CONFIG_DEBUG_GENERIC + struct generic_internal *state = (struct generic_internal *) priv_data; +#endif + PrintDebug(core->vm_info, core, "generic (%s): writing 0x%x bytes to port 0x%x using %s ...", state->name, + length, port, + state->forward_type == GENERIC_PHYSICAL ? "physical" : + state->forward_type == GENERIC_HOST ? "host" : "UNKNOWN"); + PrintDebug(core->vm_info, core, "generic (%s): writing 0x", state->name); -static int generic_start_device(struct vm_device * dev) { - PrintDebug("generic: start device\n"); - return 0; -} + for (i = 0; i < length; i++) { + PrintDebug(core->vm_info, core, "%x", ((uint8_t *)src)[i]); + } + + PrintDebug(core->vm_info, core, " to port 0x%x ... ", port); + rc=generic_write_port_passthrough(core,port,src,length,priv_data); -static int generic_stop_device(struct vm_device * dev) { - PrintDebug("generic: stop device\n"); - return 0; + PrintDebug(core->vm_info, core, " done\n"); + + return rc; } +static int generic_read_port_passthrough(struct guest_info * core, + uint16_t port, + void * dst, + uint_t length, + void * priv_data) +{ + struct generic_internal *state = (struct generic_internal *) priv_data; - - -static int generic_write_port_passthrough(uint16_t port, void * src, - uint_t length, struct vm_device * dev) { uint_t i; - PrintDebug("generic: writing 0x"); - - for (i = 0; i < length; i++) { - PrintDebug("%x", ((uchar_t*)src)[i]); - } - - PrintDebug(" to port 0x%x ... ", port); - - switch (length) { - case 1: - v3_outb(port,((uchar_t*)src)[0]); - break; - case 2: - v3_outw(port,((uint16_t*)src)[0]); + switch (state->forward_type) { + case GENERIC_PHYSICAL: + switch (length) { + case 1: + ((uint8_t *)dst)[0] = v3_inb(port); + break; + case 2: + ((uint16_t *)dst)[0] = v3_inw(port); + break; + case 4: + ((uint32_t *)dst)[0] = v3_indw(port); + break; + default: + for (i = 0; i < length; i++) { + ((uint8_t *)dst)[i] = v3_inb(port); + } + } + return length; break; - case 4: - v3_outdw(port,((uint_t*)src)[0]); +#ifdef V3_CONFIG_HOST_DEVICE + case GENERIC_HOST: + if (state->host_dev) { + return v3_host_dev_read_io(state->host_dev,port,dst,length); + } break; +#endif default: - for (i = 0; i < length; i++) { - v3_outb(port, ((uchar_t*)src)[i]); - } + PrintError(core->vm_info, core, "generic (%s): unknown forwarding type\n", state->name); + return -1; + break; } - PrintDebug(" done\n"); - - return length; + return -1; } -static int generic_read_port_passthrough(uint16_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; + +#ifdef V3_CONFIG_DEBUG_GENERIC + struct generic_internal *state = (struct generic_internal *) priv_data; +#endif - PrintDebug("generic: reading 0x%x bytes from port 0x%x ...", length, port); + PrintDebug(core->vm_info, core, "generic (%s): reading 0x%x bytes from port 0x%x using %s ...", state->name, length, port, + state->forward_type == GENERIC_PHYSICAL ? "physical" : + state->forward_type == GENERIC_HOST ? "host" : "UNKNOWN"); - switch (length) { - case 1: - ((uchar_t*)src)[0] = v3_inb(port); - break; - case 2: - ((uint16_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); - } + rc=generic_read_port_passthrough(core,port,src,length,priv_data); + + if (rc<0) { + PrintError(core->vm_info, core, "FAILED\n"); + return rc; + } else { + PrintDebug(core->vm_info, core, " done ... read 0x"); + + for (i = 0; i < rc; i++) { + PrintDebug(core->vm_info, core, "%x", ((uint8_t *)src)[i]); + } + + PrintDebug(core->vm_info, core, "\n"); } + + return rc; +} - PrintDebug(" done ... read 0x"); - for (i = 0; i < length; i++) { - PrintDebug("%x", ((uchar_t*)src)[i]); - } +static int generic_read_port_ignore(struct guest_info * core, uint16_t port, void * src, + uint_t length, void * priv_data) { - PrintDebug("\n"); + memset((uint8_t *)src, 0, length); return length; } -static int generic_write_port_ignore(uint16_t port, void * src, - uint_t length, struct vm_device * dev) { - uint_t i; +static int generic_read_port_print_and_ignore(struct guest_info * core, uint16_t port, void * src, + uint_t length, void * priv_data) { + +#ifdef V3_CONFIG_DEBUG_GENERIC + struct generic_internal *state = (struct generic_internal *) priv_data; +#endif - PrintDebug("generic: writing 0x"); + PrintDebug(core->vm_info, core, "generic (%s): reading 0x%x bytes from port 0x%x using %s ...", state->name, length, port, + state->forward_type == GENERIC_PHYSICAL ? "physical" : + state->forward_type == GENERIC_HOST ? "host" : "UNKNOWN"); + + + memset((uint8_t *)src, 0, length); + PrintDebug(core->vm_info, core, " ignored (return zeroed buffer)\n"); - 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(uint16_t port, void * src, - uint_t length, struct vm_device * dev) { +static int generic_write_port_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); + 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; + +#ifdef V3_CONFIG_DEBUG_GENERIC + struct generic_internal *state = (struct generic_internal *) priv_data; +#endif + + PrintDebug(core->vm_info, core, "generic (%s): writing 0x%x bytes to port 0x%x using %s ", state->name, length, port, + state->forward_type == GENERIC_PHYSICAL ? "physical" : + state->forward_type == GENERIC_HOST ? "host" : "UNKNOWN"); + + memset((uint8_t *)src, 0, length); + PrintDebug(core->vm_info, core, " ignored - data was: 0x"); - memset((char*)src, 0, length); - PrintDebug(" ignored (return zeroed buffer)\n"); + for (i = 0; i < length; i++) { + PrintDebug(core->vm_info, core, "%x", ((uint8_t *)src)[i]); + } + + PrintDebug(core->vm_info, core, "\n"); return length; } +static int generic_write_mem_passthrough(struct guest_info * core, + addr_t gpa, + void * src, + uint_t len, + void * priv) +{ + struct vm_device *dev = (struct vm_device *) priv; + struct generic_internal *state = (struct generic_internal *) dev->private_data; + + switch (state->forward_type) { + case GENERIC_PHYSICAL: + memcpy(V3_VAddr((void*)gpa),src,len); + return len; + break; +#ifdef V3_CONFIG_HOST_DEVICE + case GENERIC_HOST: + if (state->host_dev) { + return v3_host_dev_write_mem(state->host_dev,gpa,src,len); + } else { + return -1; + } + break; +#endif + default: + PrintError(core->vm_info, core, "generic (%s): unknown forwarding type\n", state->name); + return -1; + break; + } +} + +static int generic_write_mem_print_and_passthrough(struct guest_info * core, + addr_t gpa, + void * src, + uint_t len, + void * priv) +{ +#ifdef V3_CONFIG_DEBUG_GENERIC + struct vm_device *dev = (struct vm_device *) priv; + struct generic_internal *state = (struct generic_internal *) dev->private_data; +#endif + + PrintDebug(core->vm_info, core, "generic (%s): writing %u bytes to GPA 0x%p via %s ... ", state->name, + len,(void*)gpa, + state->forward_type == GENERIC_PHYSICAL ? "physical" : + state->forward_type == GENERIC_HOST ? "host" : "UNKNOWN"); + + int rc = generic_write_mem_passthrough(core,gpa,src,len,priv); + PrintDebug(core->vm_info, core, "done\n"); + + return rc; +} -static int generic_free(struct vm_device * dev) { - struct generic_internal * state = (struct generic_internal *)(dev->private_data); - struct port_range * tmp; - struct port_range * cur; +static int generic_write_mem_ignore(struct guest_info * core, + addr_t gpa, + void * src, + uint_t len, + void * priv) +{ + return len; +} - PrintDebug("generic: deinit_device\n"); +static int generic_write_mem_print_and_ignore(struct guest_info * core, + addr_t gpa, + void * src, + uint_t len, + void * priv) +{ +#ifdef V3_CONFIG_DEBUG_GENERIC + struct vm_device *dev = (struct vm_device *) priv; + struct generic_internal *state = (struct generic_internal *) dev->private_data; +#endif - list_for_each_entry_safe(cur, tmp, &(state->port_list), range_link) { - uint_t i; + PrintDebug(core->vm_info, core, "generic (%s): ignoring write of %u bytes to GPA 0x%p via %s", state->name, + len,(void*)gpa, + state->forward_type == GENERIC_PHYSICAL ? "physical" : + state->forward_type == GENERIC_HOST ? "host" : "UNKNOWN"); + + return len; +} - 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); +static int generic_read_mem_passthrough(struct guest_info * core, + addr_t gpa, + void * dst, + uint_t len, + void * priv) +{ + struct vm_device *dev = (struct vm_device *) priv; + struct generic_internal *state = (struct generic_internal *) dev->private_data; + + switch (state->forward_type) { + case GENERIC_PHYSICAL: + memcpy(dst,V3_VAddr((void*)gpa),len); + return len; + break; +#ifdef V3_CONFIG_HOST_DEVICE + case GENERIC_HOST: + if (state->host_dev) { + return v3_host_dev_read_mem(state->host_dev,gpa,dst,len); + } else { + return -1; } - } - - list_del(&(cur->range_link)); - state->num_port_ranges--; - V3_Free(cur); + break; +#endif + default: + PrintError(core->vm_info, core, "generic (%s): unknown forwarding type\n", state->name); + break; } + + return -1; +} + +static int generic_read_mem_print_and_passthrough(struct guest_info * core, + addr_t gpa, + void * dst, + uint_t len, + void * priv) +{ +#ifdef V3_CONFIG_DEBUG_GENERIC + struct vm_device *dev = (struct vm_device *) priv; + struct generic_internal *state = (struct generic_internal *) dev->private_data; +#endif + + PrintDebug(core->vm_info, core, "generic (%s): attempting to read %u bytes from GPA 0x%p via %s ... ", state->name, + len,(void*)gpa, + state->forward_type == GENERIC_PHYSICAL ? "physical" : + state->forward_type == GENERIC_HOST ? "host" : "UNKNOWN"); + + int rc = generic_read_mem_passthrough(core,gpa,dst,len,priv); + + PrintDebug(core->vm_info, core, "done - read %d bytes\n", rc); + + return rc; +} - generic_reset_device(dev); +static int generic_read_mem_ignore(struct guest_info * core, + addr_t gpa, + void * dst, + uint_t len, + void * priv) +{ +#ifdef V3_CONFIG_DEBUG_GENERIC + struct vm_device *dev = (struct vm_device *) priv; + struct generic_internal *state = (struct generic_internal *) dev->private_data; +#endif + + PrintDebug(core->vm_info, core, "generic (%s): ignoring attempt to read %u bytes from GPA 0x%p via %s ... ", state->name, + len,(void*)gpa, + state->forward_type == GENERIC_PHYSICAL ? "physical" : + state->forward_type == GENERIC_HOST ? "host" : "UNKNOWN"); + + memset((uint8_t *)dst, 0, len); + + PrintDebug(core->vm_info, core, "returning zeros\n"); + + return len; +} + + +static int generic_read_mem_print_and_ignore(struct guest_info * core, + addr_t gpa, + void * dst, + uint_t len, + void * priv) +{ + memset((uint8_t *)dst, 0, len); + return len; +} + + +static int generic_free(struct generic_internal * state) { + int i; + + PrintDebug(VM_NONE,VCORE_NONE, "generic (%s): deinit_device\n", state->name); + +#ifdef V3_CONFIG_HOST_DEVICE + if (state->host_dev) { + v3_host_dev_close(state->host_dev); + state->host_dev=0; + } +#endif + + // Note that the device manager handles unhooking the I/O ports + // We need to handle unhooking memory regions + for (i=0;inum_mem_hooks;i++) { + if (v3_unhook_mem(state->dev->vm,V3_MEM_CORE_ANY,state->mem_hook[i])<0) { + PrintError(VM_NONE,VCORE_NONE , "generic (%s): unable to unhook memory starting at 0x%p\n", state->name,(void*)(state->mem_hook[i])); + return -1; + } + } + + V3_Free(state); return 0; } @@ -202,67 +469,369 @@ static int generic_free(struct vm_device * dev) { static struct v3_device_ops dev_ops = { - .free = generic_free, - .reset = generic_reset_device, - .start = generic_start_device, - .stop = generic_stop_device, + .free = (int (*)(void *))generic_free, }; -int v3_generic_add_port_range(struct vm_device * dev, uint_t start, uint_t end, uint_t type) { - struct generic_internal * state = (struct generic_internal *)(dev->private_data); - struct port_range * range = (struct port_range *)V3_Malloc(sizeof(struct port_range)); +static int add_port_range(struct vm_device * dev, uint_t start, uint_t end, generic_mode_t mode) { uint_t i = 0; - range->start = start; - range->end = end; - range->type = type; - - 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"); - + struct generic_internal *state = (struct generic_internal *) dev->private_data; + + PrintDebug(VM_NONE, VCORE_NONE, "generic (%s): adding port range 0x%x to 0x%x as %s\n", state->name, + start, end, + (mode == GENERIC_PRINT_AND_PASSTHROUGH) ? "print-and-passthrough" : + (mode == GENERIC_PRINT_AND_IGNORE) ? "print-and-ignore" : + (mode == GENERIC_PASSTHROUGH) ? "passthrough" : + (mode == GENERIC_IGNORE) ? "ignore" : "UNKNOWN"); + for (i = start; i <= end; i++) { - if (type == GENERIC_PRINT_AND_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); + switch (mode) { + case 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(VM_NONE, VCORE_NONE, "generic (%s): can't hook port 0x%x (already hooked?)\n", state->name, i); + return -1; + } + break; + + case 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(VM_NONE, VCORE_NONE, "generic (%s): can't hook port 0x%x (already hooked?)\n", state->name, i); + return -1; + } + break; + case GENERIC_PASSTHROUGH: + if (v3_dev_hook_io(dev, i, + &generic_read_port_passthrough, + &generic_write_port_passthrough) == -1) { + PrintError(VM_NONE, VCORE_NONE, "generic (%s): can't hook port 0x%x (already hooked?)\n", state->name, i); + return -1; + } + break; + case GENERIC_IGNORE: + if (v3_dev_hook_io(dev, i, + &generic_read_port_ignore, + &generic_write_port_ignore) == -1) { + PrintError(VM_NONE, VCORE_NONE, "generic (%s): can't hook port 0x%x (already hooked?)\n", state->name, i); + return -1; + } + break; + default: + PrintError(VM_NONE, VCORE_NONE, "generic (%s): huh?\n", state->name); + break; + } + } + + return 0; +} + + +static int add_mem_range(struct vm_device * dev, addr_t start, addr_t end, generic_mode_t mode) { + + struct generic_internal *state = (struct generic_internal *) dev->private_data; + + PrintDebug(VM_NONE, VCORE_NONE, "generic (%s): adding memory range 0x%p to 0x%p as %s\n", state->name, + (void*)start, (void*)end, + (mode == GENERIC_PRINT_AND_PASSTHROUGH) ? "print-and-passthrough" : + (mode == GENERIC_PRINT_AND_IGNORE) ? "print-and-ignore" : + (mode == GENERIC_PASSTHROUGH) ? "passthrough" : + (mode == GENERIC_IGNORE) ? "ignore" : "UNKNOWN"); + + switch (mode) { + case GENERIC_PRINT_AND_PASSTHROUGH: + if (v3_hook_full_mem(dev->vm, V3_MEM_CORE_ANY, start, end+1, + &generic_read_mem_print_and_passthrough, + &generic_write_mem_print_and_passthrough, dev) == -1) { + PrintError(VM_NONE, VCORE_NONE, "generic (%s): can't hook memory region 0x%p to 0x%p\n", state->name,(void*)start,(void*)end); return -1; } - } else if (type == GENERIC_PRINT_AND_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); + break; + + case GENERIC_PRINT_AND_IGNORE: + if (v3_hook_full_mem(dev->vm, V3_MEM_CORE_ANY, start, end+1, + &generic_read_mem_print_and_ignore, + &generic_write_mem_print_and_ignore, dev) == -1) { + PrintError(VM_NONE, VCORE_NONE, "generic (%s): can't hook memory region 0x%p to 0x%p\n", state->name,(void*)start,(void*)end); return -1; } - } - } + break; - list_add(&(range->range_link), &(state->port_list)); - state->num_port_ranges++; + case GENERIC_PASSTHROUGH: + if (v3_hook_full_mem(dev->vm, V3_MEM_CORE_ANY, start, end+1, + &generic_read_mem_passthrough, + &generic_write_mem_passthrough, dev) == -1) { + PrintError(VM_NONE, VCORE_NONE, "generic (%s): can't hook memory region 0x%p to 0x%p\n", state->name,(void*)start,(void*)end); + return -1; + } + break; + + case GENERIC_IGNORE: + if (v3_hook_full_mem(dev->vm, V3_MEM_CORE_ANY, start, end+1, + &generic_read_mem_ignore, + &generic_write_mem_ignore, dev) == -1) { + PrintError(VM_NONE, VCORE_NONE, "generic (%s): can't hook memory region 0x%p to 0x%p\n", state->name,(void*)start,(void*)end); + return -1; + } + break; + default: + PrintError(VM_NONE, VCORE_NONE, "generic (%s): huh?\n",state->name); + break; + } return 0; } +#if 1 +//This is a hack for host device testing and will be removed +static int osdebug_hcall(struct guest_info *core, uint_t hcall_id, void * priv_data) +{ + struct generic_internal * state = (struct generic_internal *)priv_data; -static int generic_init(struct guest_info * vm, void * cfg_data) { - struct generic_internal * state = (struct generic_internal *)V3_Malloc(sizeof(struct generic_internal)); - - INIT_LIST_HEAD(&(state->port_list)); - state->num_port_ranges = 0; + int msg_len = core->vm_regs.rcx; + addr_t msg_gpa = core->vm_regs.rbx; + int buf_is_va = core->vm_regs.rdx; + int i; + uint8_t c; + PrintDebug(core->vm_info, core, "generic (%s): handling hypercall (len=%d) as sequence of port writes\n", + state->name, msg_len); + + + for (i=0;ivm_info, core, "generic (%s): could not read debug message\n",state->name); + return -1; + } + } else { + if (v3_read_gpa_memory(core, msg_gpa+i, 1, &c) != 1) { + PrintError(core->vm_info, core, "generic (%s): Could not read debug message\n",state->name); + return -1; + } + } + if (generic_write_port_print_and_passthrough(core,0xc0c0,&c,1,priv_data)!=1) { + PrintError(core->vm_info, core, "generic (%s): write port passthrough failed\n",state->name); + return -1; + } + } + + return 0; +} + +#endif + +#ifdef V3_CONFIG_HOST_DEVICE +static void generic_intr_update_callback(v3_host_dev_t hdev, v3_guest_dev_t gdev, uint8_t irq, int raise) +{ + if (gdev) { + struct vm_device *dev = (struct vm_device *) gdev; + if (raise) { + v3_raise_irq(dev->vm,irq); + } else { + v3_lower_irq(dev->vm,irq); + } + } +} +#endif + +/* + The device can be used to forward to the underlying physical device + or to a host device that has a given url. Both memory and ports can be forwarded as + + GENERIC_PASSTHROUGH => send writes and reads to physical device or host + GENERIC_PRINT_AND_PASSTHROUGH => also print what it's doing + + GENERIC_IGNORE => ignore writes and reads + GENERIC_PRINT_AND_PASSTHROUGH => also print what it's doing + + + The purpose of the "PRINT" variants is to make it easy to spy on + device interactions (although you will not see DMA or interrupts) + + + + + (empty implies physical_dev) + + + portno1 + portno2 => portno1 through portno2 (inclusive) + PRINT_AND_PASSTHROUGH (as above) + + + + gpa1 + gpa2 => memory addreses gpa1 through gpa2 (inclusive); page granularity + ... as above + + +*/ + +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"); + char * forward = v3_cfg_val(cfg, "forward"); +#ifdef V3_CONFIG_HOST_DEVICE + char * host_dev = v3_cfg_val(cfg, "hostdev"); +#endif + v3_cfg_tree_t * port_cfg = v3_cfg_subtree(cfg, "ports"); + v3_cfg_tree_t * mem_cfg = v3_cfg_subtree(cfg, "memory"); + + + state = (struct generic_internal *)V3_Malloc(sizeof(struct generic_internal)); + + if (state == NULL) { + PrintError(vm, VCORE_NONE, "generic (%s): could not allocate generic state\n",dev_id); + return -1; + } - struct vm_device * dev = v3_allocate_device("GENERIC", &dev_ops, state); + memset(state, 0, sizeof(struct generic_internal)); + strncpy(state->name,dev_id,MAX_NAME); + state->name[MAX_NAME-1] = 0; + + if (!forward) { + state->forward_type=GENERIC_PHYSICAL; + } else { + if (!strcasecmp(forward,"physical_device")) { + state->forward_type=GENERIC_PHYSICAL; + } else if (!strcasecmp(forward,"host_device")) { +#ifdef V3_CONFIG_HOST_DEVICE + state->forward_type=GENERIC_HOST; +#else + PrintError(vm, VCORE_NONE, "generic (%s): cannot configure host device since host device support is not built in\n", state->name); + V3_Free(state); + return -1; +#endif + } else { + PrintError(vm, VCORE_NONE, "generic (%s): unknown forwarding type \"%s\"\n", state->name, forward); + V3_Free(state); + return -1; + } + } + + struct vm_device * dev = v3_add_device(vm, dev_id, &dev_ops, state); - if (v3_attach_device(vm, dev) == -1) { - PrintError("Could not attach device %s\n", "GENERIC"); + if (dev == NULL) { + PrintError(vm, VCORE_NONE, "generic: could not attach device %s\n", state->name); + V3_Free(state); return -1; } - PrintDebug("generic: init_device\n"); - generic_reset_device(dev); + state->dev=dev; + + +#ifdef V3_CONFIG_HOST_DEVICE + if (state->forward_type==GENERIC_HOST) { + if (!host_dev) { + PrintError(vm, VCORE_NONE, "generic (%s): host forwarding requested, but no host device given\n", state->name); + v3_remove_device(dev); + return -1; + } else { + state->host_dev = v3_host_dev_open(host_dev,V3_BUS_CLASS_DIRECT,dev,generic_intr_update_callback,vm); + if (!(state->host_dev)) { + PrintError(vm, VCORE_NONE, "generic (%s): unable to open host device \"%s\"\n", state->name,host_dev); + v3_remove_device(dev); + return -1; + } else { + PrintDebug(vm, VCORE_NONE, "generic (%s): successfully attached host device \"%s\"\n", state->name,host_dev); + } + } + } +#endif + + PrintDebug(vm, VCORE_NONE, "generic (%s): init_device\n", state->name); + + // 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"); + if (!mode_str) { + PrintError(vm, VCORE_NONE, "generic (%s): error getting port mode\n", state->name); + return -1; + } + 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(vm, VCORE_NONE, "generic (%s): invalid mode %s in adding ports\n", state->name, mode_str); + v3_remove_device(dev); + return -1; + } + + + if (add_port_range(dev, start, end, mode) == -1) { + PrintError(vm, VCORE_NONE, "generic (%s): could not add port range 0x%x to 0x%x\n", state->name, start, end); + v3_remove_device(dev); + return -1; + } + + port_cfg = v3_cfg_next_branch(port_cfg); + } + + // scan memory list.... + while (mem_cfg) { + addr_t start = atox(v3_cfg_val(mem_cfg, "start")); + addr_t end = atox(v3_cfg_val(mem_cfg, "end")); + char * mode_str = v3_cfg_val(mem_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(vm, VCORE_NONE, "generic (%s): invalid mode %s for adding memory\n", state->name, mode_str); + v3_remove_device(dev); + return -1; + } + + if (state->num_mem_hooks>=MAX_MEM_HOOKS) { + PrintError(vm, VCORE_NONE, "generic (%s): cannot add another memory hook (increase MAX_MEM_HOOKS)\n", state->name); + v3_remove_device(dev); + return -1; + } + + if (add_mem_range(dev, start, end, mode) == -1) { + PrintError(vm, VCORE_NONE, "generic (%s): could not add memory range 0x%p to 0x%p\n", state->name, (void*)start, (void*)end); + v3_remove_device(dev); + return -1; + } + + state->mem_hook[state->num_mem_hooks] = start; + state->num_mem_hooks++; + + mem_cfg = v3_cfg_next_branch(port_cfg); + } + +#if 1 + // hack for os debug testing + if (strcasecmp(state->name,"os debug")==0) { + PrintDebug(vm, VCORE_NONE, "generic (%s): adding hypercall for os debug device\n", state->name); + v3_register_hypercall(vm,0xc0c0,osdebug_hcall,state); + } +#endif + + PrintDebug(vm, VCORE_NONE, "generic (%s): initialization complete\n", state->name); return 0; }