[PCMCIA] 04-memres

Make find_mem_region() return a struct resource.  We preserve
pccard_mem_map's sys_start and sys_stop elements for the moment
since socket drivers are relying on this information for setting
up their windows.

drivers/pcmcia/cistpl.c

@@ -85,13 +85,15 @@ INT_MODULE_PARM(cis_width,	0);		/* 16-bit CIS? */
 
 void release_cis_mem(struct pcmcia_socket *s)
 {
-    if (s->cis_mem.sys_start != 0) {
+    if (s->cis_mem.flags & MAP_ACTIVE) {
 	s->cis_mem.flags &= ~MAP_ACTIVE;
 	s->ops->set_mem_map(s, &s->cis_mem);
-	if (!(s->features & SS_CAP_STATIC_MAP))
-	    release_mem_region(s->cis_mem.sys_start, s->map_size);
+	if (s->cis_mem.res) {
+	    release_resource(s->cis_mem.res);
+	    kfree(s->cis_mem.res);
+	    s->cis_mem.res = NULL;
+	}
 	iounmap(s->cis_virt);
-	s->cis_mem.sys_start = 0;
 	s->cis_virt = NULL;
     }
 }
@@ -105,16 +107,16 @@ static unsigned char *
 set_cis_map(struct pcmcia_socket *s, unsigned int card_offset, unsigned int flags)
 {
     pccard_mem_map *mem = &s->cis_mem;
-    if (!(s->features & SS_CAP_STATIC_MAP) &&
-	mem->sys_start == 0) {
-	mem->sys_start = 0;
-	if (find_mem_region(&mem->sys_start, s->map_size,
-			    s->map_size, 0, "card services", s)) {
+    if (!(s->features & SS_CAP_STATIC_MAP) && mem->res == NULL) {
+	mem->res = find_mem_region(0, s->map_size, s->map_size, 0,
+				   "card services", s);
+	if (mem->res == NULL) {
 	    printk(KERN_NOTICE "cs: unable to map card memory!\n");
 	    return NULL;
 	}
-	mem->sys_stop = mem->sys_start+s->map_size-1;
-	s->cis_virt = ioremap(mem->sys_start, s->map_size);
+	mem->sys_start = mem->res->start;
+	mem->sys_stop = mem->res->end;
+	s->cis_virt = ioremap(mem->res->start, s->map_size);
     }
     mem->card_start = card_offset;
     mem->flags = flags;

drivers/pcmcia/cs.c

@@ -1100,8 +1100,8 @@ int pcmcia_get_window(window_handle_t *handle, int idx, win_req_t *req)
     if (w == MAX_WIN)
 	return CS_NO_MORE_ITEMS;
     win = &s->win[w];
-    req->Base = win->ctl.sys_start;
-    req->Size = win->ctl.sys_stop - win->ctl.sys_start + 1;
+    req->Base = win->ctl.res->start;
+    req->Size = win->ctl.res->end - win->ctl.res->start + 1;
     req->AccessSpeed = win->ctl.speed;
     req->Attributes = 0;
     if (win->ctl.flags & MAP_ATTRIB)
@@ -1548,8 +1548,11 @@ int pcmcia_release_window(window_handle_t win)
     s->state &= ~SOCKET_WIN_REQ(win->index);
 
     /* Release system memory */
-    if(!(s->features & SS_CAP_STATIC_MAP))
-	release_mem_region(win->ctl.sys_start, win->ctl.sys_stop - win->ctl.sys_start + 1);
+    if (win->ctl.res) {
+	release_resource(win->ctl.res);
+	kfree(win->ctl.res);
+	win->ctl.res = NULL;
+    }
     win->handle->state &= ~CLIENT_WIN_REQ(win->index);
 
     win->magic = 0;
@@ -1871,14 +1874,19 @@ int pcmcia_request_window(client_handle_t *handle, win_req_t *req, window_handle
     win->index = w;
     win->handle = *handle;
     win->sock = s;
-    win->ctl.sys_start = req->Base;
 
-    if (!(s->features & SS_CAP_STATIC_MAP) &&
-	find_mem_region(&win->ctl.sys_start, req->Size, align,
+    if (!(s->features & SS_CAP_STATIC_MAP)) {
+	win->ctl.res = find_mem_region(req->Base, req->Size, align,
 				       (req->Attributes & WIN_MAP_BELOW_1MB),
-			(*handle)->dev_info, s))
+				       (*handle)->dev_info, s);
+	if (!win->ctl.res)
 	    return CS_IN_USE;
-    win->ctl.sys_stop = win->ctl.sys_start + req->Size - 1;
+	win->ctl.sys_start = win->ctl.res->start;
+	win->ctl.sys_stop = win->ctl.res->end;
+    } else {
+	win->ctl.sys_start = req->Base;
+	win->ctl.sys_stop = req->Base + req->Size - 1;
+    }
     (*handle)->state |= CLIENT_WIN_REQ(w);
 
     /* Configure the socket controller */

drivers/pcmcia/cs_internal.h

@@ -185,7 +185,7 @@ struct resource *find_io_region(unsigned long base, int num, unsigned long align
 		   char *name, struct pcmcia_socket *s);
 int adjust_io_region(struct resource *res, unsigned long r_start,
 		     unsigned long r_end, struct pcmcia_socket *s);
-int find_mem_region(u_long *base, u_long num, u_long align,
+struct resource *find_mem_region(u_long base, u_long num, u_long align,
 		    int low, char *name, struct pcmcia_socket *s);
 int try_irq(u_int Attributes, int irq, int specific);
 void undo_irq(u_int Attributes, int irq);

drivers/pcmcia/i82092.c

@@ -420,12 +420,12 @@ static void set_bridge_state(int sock)
 static int i82092aa_init(struct pcmcia_socket *sock)
 {
 	int i;
+	struct resource res = { .start = 0, .end = 0x0fff };
         pccard_io_map io = { 0, 0, 0, 0, 1 };
-        pccard_mem_map mem = { 0, 0, 0, 0, 0, 0 };
+	pccard_mem_map mem = { .res = &res, .sys_stop = 0x0fff, };
         
         enter("i82092aa_init");
                         
-        mem.sys_stop = 0x0fff;
         for (i = 0; i < 2; i++) {
         	io.map = i;
                 i82092aa_set_io_map(sock, &io);

drivers/pcmcia/i82365.c

@@ -1308,10 +1308,10 @@ static int pcic_set_mem_map(struct pcmcia_socket *s, struct pccard_mem_map *mem)
 static int pcic_init(struct pcmcia_socket *s)
 {
 	int i;
+	struct resource res = { .start = 0, .end = 0x1000 };
 	pccard_io_map io = { 0, 0, 0, 0, 1 };
-	pccard_mem_map mem = { 0, 0, 0, 0, 0, 0 };
+	pccard_mem_map mem = { .res = &res, .sys_stop = 0x1000, };
 
-	mem.sys_stop = 0x1000;
 	for (i = 0; i < 2; i++) {
 		io.map = i;
 		pcic_set_io_map(s, &io);

drivers/pcmcia/pd6729.c

@@ -563,10 +563,10 @@ static int pd6729_suspend(struct pcmcia_socket *sock)
 static int pd6729_init(struct pcmcia_socket *sock)
 {
 	int i;
+	struct resource res = { .end = 0x0fff };
 	pccard_io_map io = { 0, 0, 0, 0, 1 };
-	pccard_mem_map mem = { 0, 0, 0, 0, 0, 0 };
+	pccard_mem_map mem = { .res = &res, .sys_stop = 0x0fff };
 
-	mem.sys_stop = 0x0fff;
 	pd6729_set_socket(sock, &dead_socket);
 	for (i = 0; i < 2; i++) {
 		io.map = i;

drivers/pcmcia/rsrc_mgr.c

@@ -303,6 +303,7 @@ static int readable(struct pcmcia_socket *s, struct resource *res, cisinfo_t *in
 
 	s->cis_mem.sys_start = res->start;
 	s->cis_mem.sys_stop = res->end;
+	s->cis_mem.res = res;
 	s->cis_virt = ioremap(res->start, s->map_size);
 	if (s->cis_virt) {
 		ret = pcmcia_validate_cis(s->clients, info);
@@ -313,6 +314,7 @@ static int readable(struct pcmcia_socket *s, struct resource *res, cisinfo_t *in
 	}
 	s->cis_mem.sys_start = 0;
 	s->cis_mem.sys_stop = 0;
+	s->cis_mem.res = NULL;
 	if ((ret != 0) || (info->Chains == 0))
 		return 0;
 	return 1;
@@ -332,6 +334,7 @@ static int checksum(struct pcmcia_socket *s, struct resource *res)
 		map.speed = 0;
 		map.sys_start = res->start;
 		map.sys_stop = res->end;
+		map.res = res;
 		map.card_start = 0;
 		s->ops->set_mem_map(s, &map);
 
@@ -661,7 +664,7 @@ struct resource *find_io_region(unsigned long base, int num,
 	return res;
 }
 
-int find_mem_region(u_long *base, u_long num, u_long align,
+struct resource *find_mem_region(u_long base, u_long num, u_long align,
 				 int low, char *name, struct pcmcia_socket *s)
 {
 	struct resource *res = make_resource(0, num, IORESOURCE_MEM, name);
@@ -672,16 +675,16 @@ int find_mem_region(u_long *base, u_long num, u_long align,
 	low = low || !(s->features & SS_CAP_PAGE_REGS);
 
 	data.mask = align - 1;
-	data.offset = *base & data.mask;
+	data.offset = base & data.mask;
 	data.map = &mem_db;
 
 	for (i = 0; i < 2; i++) {
 		if (low) {
 			max = 0x100000UL;
-			min = *base < max ? *base : 0;
+			min = base < max ? base : 0;
 		} else {
 			max = ~0UL;
-			min = 0x100000UL + *base;
+			min = 0x100000UL + base;
 		}
 
 		down(&rsrc_sem);
@@ -702,10 +705,9 @@ int find_mem_region(u_long *base, u_long num, u_long align,
 
 	if (ret != 0) {
 		kfree(res);
-	} else {
-		*base = res->start;
+		res = NULL;
 	}
-	return ret;
+	return res;
 }
 
 /*======================================================================

drivers/pcmcia/tcic.c

@@ -868,10 +868,10 @@ static int tcic_set_mem_map(struct pcmcia_socket *sock, struct pccard_mem_map *m
 static int tcic_init(struct pcmcia_socket *s)
 {
 	int i;
+	struct resource res = { .start = 0, .end = 0x1000 };
 	pccard_io_map io = { 0, 0, 0, 0, 1 };
-	pccard_mem_map mem = { 0, 0, 0, 0, 0, 0 };
+	pccard_mem_map mem = { .res = &res, .sys_stop = 0x1000, };
 
-	mem.sys_stop = 0x1000;
 	for (i = 0; i < 2; i++) {
 		io.map = i;
 		tcic_set_io_map(s, &io);

drivers/pcmcia/yenta_socket.c

@@ -445,10 +445,10 @@ static void yenta_interrupt_wrapper(unsigned long data)
 static void yenta_clear_maps(struct yenta_socket *socket)
 {
 	int i;
+	struct resource res = { .start = 0, .end = 0x0fff };
 	pccard_io_map io = { 0, 0, 0, 0, 1 };
-	pccard_mem_map mem = { 0, 0, 0, 0, 0, 0 };
+	pccard_mem_map mem = { .res = &res, .sys_stop = 0x0fff, };
 
-	mem.sys_stop = 0x0fff;
 	yenta_set_socket(&socket->socket, &dead_socket);
 	for (i = 0; i < 2; i++) {
 		io.map = i;

include/pcmcia/ss.h

@@ -105,6 +105,7 @@ typedef struct pccard_mem_map {
     u_short	speed;
     u_long	sys_start, sys_stop;
     u_int	card_start;
+    struct resource *res;
 } pccard_mem_map;
 
 typedef struct cb_bridge_map {