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authorRalf Baechle <ralf@linux-mips.org>2005-10-31 23:34:52 +0000
committerRalf Baechle <ralf@linux-mips.org>2005-11-07 18:05:36 +0000
commit307bd284c205616e02fb85557b97f0e3e969662e (patch)
tree716a79ba83a86bd841208c4ee4ca70ba590a0ff2 /arch/mips/kernel/vpe.c
parentb8c2a77ce38defcf539a4ba5c666f8e9f093f887 (diff)
downloadlinux-stericsson-307bd284c205616e02fb85557b97f0e3e969662e.tar.gz
VPE loader janitoring
o Switch to dynamic major o Remove duplicate SHN_MIPS_SCOMMON definition o Coding style: remove typedefs. o Coding style: reorder to avoid the need for forward declarations o Use kzalloc. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/kernel/vpe.c')
-rw-r--r--arch/mips/kernel/vpe.c100
1 files changed, 44 insertions, 56 deletions
diff --git a/arch/mips/kernel/vpe.c b/arch/mips/kernel/vpe.c
index 97fefcc9dbe7..06be405be399 100644
--- a/arch/mips/kernel/vpe.c
+++ b/arch/mips/kernel/vpe.c
@@ -58,10 +58,6 @@
typedef void *vpe_handle;
-// defined here because the kernel module loader doesn't have
-// anything to do with it.
-#define SHN_MIPS_SCOMMON 0xff03
-
#ifndef ARCH_SHF_SMALL
#define ARCH_SHF_SMALL 0
#endif
@@ -69,11 +65,8 @@ typedef void *vpe_handle;
/* If this is set, the section belongs in the init part of the module */
#define INIT_OFFSET_MASK (1UL << (BITS_PER_LONG-1))
-// temp number,
-#define VPE_MAJOR 63
-
static char module_name[] = "vpe";
-static int major = 0;
+static int major;
/* grab the likely amount of memory we will need. */
#ifdef CONFIG_MIPS_VPE_LOADER_TOM
@@ -98,22 +91,7 @@ enum tc_state {
TC_STATE_DYNAMIC
};
-struct vpe;
-typedef struct tc {
- enum tc_state state;
- int index;
-
- /* parent VPE */
- struct vpe *pvpe;
-
- /* The list of TC's with this VPE */
- struct list_head tc;
-
- /* The global list of tc's */
- struct list_head list;
-} tc_t;
-
-typedef struct vpe {
+struct vpe {
enum vpe_state state;
/* (device) minor associated with this vpe */
@@ -135,7 +113,21 @@ typedef struct vpe {
/* shared symbol address */
void *shared_ptr;
-} vpe_t;
+};
+
+struct tc {
+ enum tc_state state;
+ int index;
+
+ /* parent VPE */
+ struct vpe *pvpe;
+
+ /* The list of TC's with this VPE */
+ struct list_head tc;
+
+ /* The global list of tc's */
+ struct list_head list;
+};
struct vpecontrol_ {
/* Virtual processing elements */
@@ -146,7 +138,7 @@ struct vpecontrol_ {
} vpecontrol;
static void release_progmem(void *ptr);
-static void dump_vpe(vpe_t * v);
+static void dump_vpe(struct vpe * v);
extern void save_gp_address(unsigned int secbase, unsigned int rel);
/* get the vpe associated with this minor */
@@ -197,13 +189,11 @@ struct vpe *alloc_vpe(int minor)
{
struct vpe *v;
- if ((v = kmalloc(sizeof(struct vpe), GFP_KERNEL)) == NULL) {
+ if ((v = kzalloc(sizeof(struct vpe), GFP_KERNEL)) == NULL) {
printk(KERN_WARNING "VPE: alloc_vpe no mem\n");
return NULL;
}
- memset(v, 0, sizeof(struct vpe));
-
INIT_LIST_HEAD(&v->tc);
list_add_tail(&v->list, &vpecontrol.vpe_list);
@@ -216,13 +206,11 @@ struct tc *alloc_tc(int index)
{
struct tc *t;
- if ((t = kmalloc(sizeof(struct tc), GFP_KERNEL)) == NULL) {
+ if ((t = kzalloc(sizeof(struct tc), GFP_KERNEL)) == NULL) {
printk(KERN_WARNING "VPE: alloc_tc no mem\n");
return NULL;
}
- memset(t, 0, sizeof(struct tc));
-
INIT_LIST_HEAD(&t->tc);
list_add_tail(&t->list, &vpecontrol.tc_list);
@@ -412,16 +400,17 @@ static int apply_r_mips_26(struct module *me, uint32_t *location,
return -ENOEXEC;
}
-/* Not desperately convinced this is a good check of an overflow condition
- anyway. But it gets in the way of handling undefined weak symbols which
- we want to set to zero.
- if ((v & 0xf0000000) != (((unsigned long)location + 4) & 0xf0000000)) {
- printk(KERN_ERR
- "module %s: relocation overflow\n",
- me->name);
- return -ENOEXEC;
- }
-*/
+/*
+ * Not desperately convinced this is a good check of an overflow condition
+ * anyway. But it gets in the way of handling undefined weak symbols which
+ * we want to set to zero.
+ * if ((v & 0xf0000000) != (((unsigned long)location + 4) & 0xf0000000)) {
+ * printk(KERN_ERR
+ * "module %s: relocation overflow\n",
+ * me->name);
+ * return -ENOEXEC;
+ * }
+ */
*location = (*location & ~0x03ffffff) |
((*location + (v >> 2)) & 0x03ffffff);
@@ -681,7 +670,7 @@ static void dump_tclist(void)
}
/* We are prepared so configure and start the VPE... */
-int vpe_run(vpe_t * v)
+int vpe_run(struct vpe * v)
{
unsigned long val;
struct tc *t;
@@ -772,7 +761,7 @@ int vpe_run(vpe_t * v)
return 0;
}
-static unsigned long find_vpe_symbols(vpe_t * v, Elf_Shdr * sechdrs,
+static unsigned long find_vpe_symbols(struct vpe * v, Elf_Shdr * sechdrs,
unsigned int symindex, const char *strtab,
struct module *mod)
{
@@ -792,10 +781,12 @@ static unsigned long find_vpe_symbols(vpe_t * v, Elf_Shdr * sechdrs,
return 0;
}
-/* Allocates a VPE with some program code space(the load address), copies the contents
- of the program (p)buffer performing relocatations/etc, free's it when finished.
+/*
+ * Allocates a VPE with some program code space(the load address), copies
+ * the contents of the program (p)buffer performing relocatations/etc,
+ * free's it when finished.
*/
-int vpe_elfload(vpe_t * v)
+int vpe_elfload(struct vpe * v)
{
Elf_Ehdr *hdr;
Elf_Shdr *sechdrs;
@@ -931,7 +922,7 @@ cleanup:
return err;
}
-static void dump_vpe(vpe_t * v)
+static void dump_vpe(struct vpe * v)
{
struct tc *t;
@@ -947,7 +938,7 @@ static void dump_vpe(vpe_t * v)
static int vpe_open(struct inode *inode, struct file *filp)
{
int minor;
- vpe_t *v;
+ struct vpe *v;
/* assume only 1 device at the mo. */
if ((minor = MINOR(inode->i_rdev)) != 1) {
@@ -1001,7 +992,7 @@ static int vpe_open(struct inode *inode, struct file *filp)
static int vpe_release(struct inode *inode, struct file *filp)
{
int minor, ret = 0;
- vpe_t *v;
+ struct vpe *v;
Elf_Ehdr *hdr;
minor = MINOR(inode->i_rdev);
@@ -1035,7 +1026,7 @@ static ssize_t vpe_write(struct file *file, const char __user * buffer,
{
int minor;
size_t ret = count;
- vpe_t *v;
+ struct vpe *v;
minor = MINOR(file->f_dentry->d_inode->i_rdev);
if ((v = get_vpe(minor)) == NULL)
@@ -1180,14 +1171,11 @@ static int __init vpe_module_init(void)
return -ENODEV;
}
- if ((major = register_chrdev(VPE_MAJOR, module_name, &vpe_fops) < 0)) {
+ if ((major = register_chrdev(0, module_name, &vpe_fops) < 0)) {
printk("VPE loader: unable to register character device\n");
- return -EBUSY;
+ return major;
}
- if (major == 0)
- major = VPE_MAJOR;
-
dmt();
dvpe();