diff options
Diffstat (limited to 'old/xenolinux-2.4.16-sparse/arch/xeno/drivers/dom0/dom0_core.c')
| -rw-r--r-- | old/xenolinux-2.4.16-sparse/arch/xeno/drivers/dom0/dom0_core.c | 334 |
1 files changed, 0 insertions, 334 deletions
diff --git a/old/xenolinux-2.4.16-sparse/arch/xeno/drivers/dom0/dom0_core.c b/old/xenolinux-2.4.16-sparse/arch/xeno/drivers/dom0/dom0_core.c deleted file mode 100644 index f8af85358b..0000000000 --- a/old/xenolinux-2.4.16-sparse/arch/xeno/drivers/dom0/dom0_core.c +++ /dev/null @@ -1,334 +0,0 @@ -/****************************************************************************** - * dom0_core.c - * - * Interface to privileged domain-0 commands. - * - * Copyright (c) 2002, K A Fraser, B Dragovic - */ - -#include <linux/config.h> -#include <linux/module.h> -#include <linux/kernel.h> -#include <linux/sched.h> -#include <linux/slab.h> -#include <linux/string.h> -#include <linux/errno.h> -#include <linux/proc_fs.h> - -#include <linux/mm.h> -#include <linux/mman.h> -#include <linux/swap.h> -#include <linux/smp_lock.h> -#include <linux/swapctl.h> -#include <linux/iobuf.h> -#include <linux/highmem.h> -#include <linux/pagemap.h> - -#include <asm/pgalloc.h> -#include <asm/pgtable.h> -#include <asm/uaccess.h> -#include <asm/tlb.h> - -#include "dom0_ops.h" - -/* Private proc-file data structures. */ -typedef struct proc_data { - unsigned int domain; - unsigned long map_size; -} dom_procdata_t; - -typedef struct proc_mem_data { - unsigned long pfn; - int tot_pages; -} proc_memdata_t; - -#define XENO_BASE "xeno" -#define DOM0_CMD_INTF "dom0_cmd" -#define DOM0_NEWDOM "new_dom_data" - -#define MAX_LEN 16 -#define DOM_DIR "dom" -#define DOM_MEM "mem" -#define DOM_VIF "vif" - -#define MAP_DISCONT 1 - -static struct proc_dir_entry *xeno_base; -static struct proc_dir_entry *dom0_cmd_intf; -static struct proc_dir_entry *proc_ft; - -unsigned long direct_mmap(unsigned long, unsigned long, pgprot_t, int, int); -int direct_unmap(unsigned long, unsigned long); -int direct_disc_unmap(unsigned long, unsigned long, int); - -static unsigned char readbuf[1204]; - -static int cmd_read_proc(char *page, char **start, off_t off, - int count, int *eof, void *data) -{ - strcpy(page, readbuf); - *readbuf = '\0'; - *eof = 1; - *start = page; - return strlen(page); -} - -static ssize_t dom_vif_read(struct file * file, char * buff, size_t size, loff_t * off) -{ - char hyp_buf[128]; // Hypervisor is going to write its reply here. - network_op_t op; - static int finished = 0; - - // This seems to be the only way to make the OS stop making read requests - // to the file. When we use the fileoperations version of read, offset - // seems to be ignored altogether. - - if (finished) - { - finished = 0; - return 0; - } - - op.cmd = NETWORK_OP_VIFQUERY; - op.u.vif_query.domain = (unsigned int) ((struct proc_dir_entry *)file->f_dentry->d_inode->u.generic_ip)->data; - op.u.vif_query.buf = hyp_buf; - - strcpy(hyp_buf, "Error getting domain's vif list from hypervisor.\n"); // This will be replaced if everything works. - - (void)HYPERVISOR_network_op(&op); - - if (*off >= (strlen(hyp_buf)+1)) return 0; - - copy_to_user(buff, hyp_buf, strlen(hyp_buf)); - - finished = 1; - - return strlen(hyp_buf)+1; -} - -struct file_operations dom_vif_ops = { - read: dom_vif_read -}; - - -static void create_proc_dom_entries(int dom) -{ - struct proc_dir_entry * dir; - dom_procdata_t * dom_data; - char dir_name[MAX_LEN]; - struct proc_dir_entry * file; - - snprintf(dir_name, MAX_LEN, "%s%d", DOM_DIR, dom); - - dom_data = (dom_procdata_t *)kmalloc(sizeof(dom_procdata_t), GFP_KERNEL); - dom_data->domain = dom; - - dir = proc_mkdir(dir_name, xeno_base); - dir->data = dom_data; - - file = create_proc_entry(DOM_VIF, 0600, dir); - if (file != NULL) - { - file->owner = THIS_MODULE; - file->nlink = 1; - file->proc_fops = &dom_vif_ops; - file->data = (void *) dom; - } -} - -static ssize_t dom_mem_write(struct file * file, const char * buff, - size_t size , loff_t * off) -{ - dom_mem_t mem_data; - - copy_from_user(&mem_data, (dom_mem_t *)buff, sizeof(dom_mem_t)); - - if(direct_disc_unmap(mem_data.vaddr, mem_data.start_pfn, - mem_data.tot_pages) == 0){ - return sizeof(sizeof(dom_mem_t)); - } else { - return -1; - } -} - -static ssize_t dom_mem_read(struct file * file, char * buff, size_t size, loff_t * off) -{ - unsigned long addr; - pgprot_t prot; - - proc_memdata_t * mem_data = (proc_memdata_t *)((struct proc_dir_entry *)file->f_dentry->d_inode->u.generic_ip)->data; - - prot = PAGE_SHARED; - - /* remap the range using xen specific routines */ - - addr = direct_mmap(mem_data->pfn << PAGE_SHIFT, mem_data->tot_pages << PAGE_SHIFT, prot, MAP_DISCONT, mem_data->tot_pages); - - copy_to_user((unsigned long *)buff, &addr, sizeof(addr)); - - return sizeof(addr); -} - -struct file_operations dom_mem_ops = { - read: dom_mem_read, - write: dom_mem_write, -}; - -static int dom_map_mem(unsigned int dom, unsigned long pfn, int tot_pages) -{ - int ret = -ENOENT; - struct proc_dir_entry * pd = xeno_base->subdir; - struct proc_dir_entry * file; - proc_memdata_t * memdata; - - while(pd != NULL){ - - if((pd->mode & S_IFDIR) && ((dom_procdata_t *)pd->data)->domain == dom){ - - /* check if there is already an entry for mem and if so - * remove it. - */ - remove_proc_entry(DOM_MEM, pd); - - /* create new entry with parameters describing what to do - * when it is mmaped. - */ - file = create_proc_entry(DOM_MEM, 0600, pd); - if(file != NULL) - { - file->owner = THIS_MODULE; - file->nlink = 1; - file->proc_fops = &dom_mem_ops; - - memdata = (proc_memdata_t *)kmalloc(sizeof(proc_memdata_t), GFP_KERNEL); - memdata->pfn = pfn; - memdata->tot_pages = tot_pages; - file->data = memdata; - - ret = 0; - break; - } - - ret = -EAGAIN; - break; - } - pd = pd->next; - } - - return ret; -} - -/* function used to retrieve data associated with new domain */ -static ssize_t dom_data_read(struct file * file, char * buff, size_t size, loff_t * off) -{ - dom0_newdomain_t * dom_data = (dom0_newdomain_t *) - ((struct proc_dir_entry *)file->f_dentry->d_inode->u.generic_ip)->data; - - copy_to_user((dom0_newdomain_t *)buff, dom_data, sizeof(dom0_newdomain_t)); - - remove_proc_entry(DOM0_NEWDOM, xeno_base); - - kfree(dom_data); - - return sizeof(dom0_newdomain_t); -} - -struct file_operations newdom_data_fops = { - read: dom_data_read, -}; - -static int cmd_write_proc(struct file *file, const char *buffer, - u_long count, void *data) -{ - dom0_op_t op; - int ret = 0; - struct proc_dir_entry * new_dom_id; - dom0_newdomain_t * params; - int i; - unsigned long p; - - copy_from_user(&op, buffer, sizeof(dom0_op_t)); - - /* do some sanity checks */ - if(op.cmd > MAX_CMD){ - ret = -ENOSYS; - goto out; - } - - if ( op.cmd == MAP_DOM_MEM ) - { - ret = dom_map_mem(op.u.dommem.domain, op.u.dommem.start_pfn, - op.u.dommem.tot_pages); - } - else if ( op.cmd == DO_PGUPDATES ) - { - ret = HYPERVISOR_pt_update(op.u.pgupdate.pgt_update_arr, - op.u.pgupdate.num_pgt_updates); - } - else - { - ret = HYPERVISOR_dom0_op(&op); - - /* if new domain created, create proc entries */ - if(op.cmd == DOM0_NEWDOMAIN){ - create_proc_dom_entries(ret); - - params = (dom0_newdomain_t *)kmalloc(sizeof(dom0_newdomain_t), - GFP_KERNEL); - params->memory_kb = op.u.newdomain.memory_kb; - params->pg_head = op.u.newdomain.pg_head; - params->num_vifs = op.u.newdomain.num_vifs; - params->domain = op.u.newdomain.domain; - - /* now notify user space of the new domain's id */ - new_dom_id = create_proc_entry(DOM0_NEWDOM, 0600, xeno_base); - if ( new_dom_id != NULL ) - { - new_dom_id->owner = THIS_MODULE; - new_dom_id->nlink = 1; - new_dom_id->proc_fops = &newdom_data_fops; - new_dom_id->data = (void *)params; - } - - } - - } - -out: - return ret; - -} - -static int __init init_module(void) -{ - /* xeno proc root setup */ - xeno_base = proc_mkdir(XENO_BASE, &proc_root); - - /* xeno control interface */ - *readbuf = '\0'; - dom0_cmd_intf = create_proc_entry (DOM0_CMD_INTF, 0600, xeno_base); - if ( dom0_cmd_intf != NULL ) - { - dom0_cmd_intf->owner = THIS_MODULE; - dom0_cmd_intf->nlink = 1; - dom0_cmd_intf->read_proc = cmd_read_proc; - dom0_cmd_intf->write_proc = cmd_write_proc; - } - - /* set up /proc entries for dom 0 */ - create_proc_dom_entries(0); - - return 0; -} - - -static void __exit cleanup_module(void) -{ - if ( dom0_cmd_intf == NULL ) return; - remove_proc_entry("dom0", &proc_root); - dom0_cmd_intf = NULL; -} - - -module_init(init_module); -module_exit(cleanup_module); |