X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=drivers%2Fssb%2Fpcmcia.c;h=bb44a76b3eb5508d605869936e34857afbfc2e18;hb=4fd3670eb1d3c33e8952cf1e79edbb2d517dcfb5;hp=7c773603b4025f41eacba761bc08484b60a470dd;hpb=e86908614f2c7fec401827e5cefd7a6ea9407f85;p=linux-2.6

diff --git a/drivers/ssb/pcmcia.c b/drivers/ssb/pcmcia.c
index 7c773603b4..bb44a76b3e 100644
--- a/drivers/ssb/pcmcia.c
+++ b/drivers/ssb/pcmcia.c
@@ -10,6 +10,7 @@
 
 #include <linux/ssb/ssb.h>
 #include <linux/delay.h>
+#include <linux/io.h>
 
 #include <pcmcia/cs_types.h>
 #include <pcmcia/cs.h>
@@ -62,17 +63,17 @@ int ssb_pcmcia_switch_coreidx(struct ssb_bus *bus,
 		err = pcmcia_access_configuration_register(pdev, &reg);
 		if (err != CS_SUCCESS)
 			goto error;
-		read_addr |= (reg.Value & 0xF) << 12;
+		read_addr |= ((u32)(reg.Value & 0x0F)) << 12;
 		reg.Offset = 0x30;
 		err = pcmcia_access_configuration_register(pdev, &reg);
 		if (err != CS_SUCCESS)
 			goto error;
-		read_addr |= reg.Value << 16;
+		read_addr |= ((u32)reg.Value) << 16;
 		reg.Offset = 0x32;
 		err = pcmcia_access_configuration_register(pdev, &reg);
 		if (err != CS_SUCCESS)
 			goto error;
-		read_addr |= reg.Value << 24;
+		read_addr |= ((u32)reg.Value) << 24;
 
 		cur_core = (read_addr - SSB_ENUM_BASE) / SSB_CORE_SIZE;
 		if (cur_core == coreidx)
@@ -151,28 +152,29 @@ error:
 	goto out_unlock;
 }
 
-/* These are the main device register access functions.
- * do_select_core is inline to have the likely hotpath inline.
- * All unlikely codepaths are out-of-line. */
-static inline int do_select_core(struct ssb_bus *bus,
-				 struct ssb_device *dev,
-				 u16 *offset)
+static int select_core_and_segment(struct ssb_device *dev,
+				   u16 *offset)
 {
+	struct ssb_bus *bus = dev->bus;
 	int err;
-	u8 need_seg = (*offset >= 0x800) ? 1 : 0;
+	u8 need_segment;
+
+	if (*offset >= 0x800) {
+		*offset -= 0x800;
+		need_segment = 1;
+	} else
+		need_segment = 0;
 
 	if (unlikely(dev != bus->mapped_device)) {
 		err = ssb_pcmcia_switch_core(bus, dev);
 		if (unlikely(err))
 			return err;
 	}
-	if (unlikely(need_seg != bus->mapped_pcmcia_seg)) {
-		err = ssb_pcmcia_switch_segment(bus, need_seg);
+	if (unlikely(need_segment != bus->mapped_pcmcia_seg)) {
+		err = ssb_pcmcia_switch_segment(bus, need_segment);
 		if (unlikely(err))
 			return err;
 	}
-	if (need_seg == 1)
-		*offset -= 0x800;
 
 	return 0;
 }
@@ -180,32 +182,31 @@ static inline int do_select_core(struct ssb_bus *bus,
 static u16 ssb_pcmcia_read16(struct ssb_device *dev, u16 offset)
 {
 	struct ssb_bus *bus = dev->bus;
-	u16 x;
 
-	if (unlikely(do_select_core(bus, dev, &offset)))
+	if (unlikely(select_core_and_segment(dev, &offset)))
 		return 0xFFFF;
-	x = readw(bus->mmio + offset);
 
-	return x;
+	return readw(bus->mmio + offset);
 }
 
 static u32 ssb_pcmcia_read32(struct ssb_device *dev, u16 offset)
 {
 	struct ssb_bus *bus = dev->bus;
-	u32 x;
+	u32 lo, hi;
 
-	if (unlikely(do_select_core(bus, dev, &offset)))
+	if (unlikely(select_core_and_segment(dev, &offset)))
 		return 0xFFFFFFFF;
-	x = readl(bus->mmio + offset);
+	lo = readw(bus->mmio + offset);
+	hi = readw(bus->mmio + offset + 2);
 
-	return x;
+	return (lo | (hi << 16));
 }
 
 static void ssb_pcmcia_write16(struct ssb_device *dev, u16 offset, u16 value)
 {
 	struct ssb_bus *bus = dev->bus;
 
-	if (unlikely(do_select_core(bus, dev, &offset)))
+	if (unlikely(select_core_and_segment(dev, &offset)))
 		return;
 	writew(value, bus->mmio + offset);
 }
@@ -214,12 +215,12 @@ static void ssb_pcmcia_write32(struct ssb_device *dev, u16 offset, u32 value)
 {
 	struct ssb_bus *bus = dev->bus;
 
-	if (unlikely(do_select_core(bus, dev, &offset)))
+	if (unlikely(select_core_and_segment(dev, &offset)))
 		return;
-	readw(bus->mmio + offset);
-	writew(value >> 16, bus->mmio + offset + 2);
-	readw(bus->mmio + offset);
-	writew(value, bus->mmio + offset);
+	writeb((value & 0xFF000000) >> 24, bus->mmio + offset + 3);
+	writeb((value & 0x00FF0000) >> 16, bus->mmio + offset + 2);
+	writeb((value & 0x0000FF00) >> 8, bus->mmio + offset + 1);
+	writeb((value & 0x000000FF) >> 0, bus->mmio + offset + 0);
 }
 
 /* Not "static", as it's used in main.c */