X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=drivers%2Fssb%2Fmain.c;h=d831a2beff393079d9a20686494bf022be1f7651;hb=ae0645a451b02ad35c520b01177b70ebd59c91ab;hp=e12371916444502e2e7742e4e7b5c21429b3e9cd;hpb=e7ec2e3230633a858af1b0b359f6c4670dbeb997;p=linux-2.6

diff --git a/drivers/ssb/main.c b/drivers/ssb/main.c
index e123719164..d831a2beff 100644
--- a/drivers/ssb/main.c
+++ b/drivers/ssb/main.c
@@ -120,35 +120,12 @@ static void ssb_device_put(struct ssb_device *dev)
 		put_device(dev->dev);
 }
 
-static int ssb_bus_resume(struct ssb_bus *bus)
-{
-	int err;
-
-	ssb_pci_xtal(bus, SSB_GPIO_XTAL | SSB_GPIO_PLL, 1);
-	err = ssb_pcmcia_init(bus);
-	if (err) {
-		/* No need to disable XTAL, as we don't have one on PCMCIA. */
-		return err;
-	}
-	ssb_chipco_resume(&bus->chipco);
-
-	return 0;
-}
-
 static int ssb_device_resume(struct device *dev)
 {
 	struct ssb_device *ssb_dev = dev_to_ssb_dev(dev);
 	struct ssb_driver *ssb_drv;
-	struct ssb_bus *bus;
 	int err = 0;
 
-	bus = ssb_dev->bus;
-	if (bus->suspend_cnt == bus->nr_devices) {
-		err = ssb_bus_resume(bus);
-		if (err)
-			return err;
-	}
-	bus->suspend_cnt--;
 	if (dev->driver) {
 		ssb_drv = drv_to_ssb_drv(dev->driver);
 		if (ssb_drv && ssb_drv->resume)
@@ -160,27 +137,10 @@ out:
 	return err;
 }
 
-static void ssb_bus_suspend(struct ssb_bus *bus, pm_message_t state)
-{
-	ssb_chipco_suspend(&bus->chipco, state);
-	ssb_pci_xtal(bus, SSB_GPIO_XTAL | SSB_GPIO_PLL, 0);
-
-	/* Reset HW state information in memory, so that HW is
-	 * completely reinitialized on resume. */
-	bus->mapped_device = NULL;
-#ifdef CONFIG_SSB_DRIVER_PCICORE
-	bus->pcicore.setup_done = 0;
-#endif
-#ifdef CONFIG_SSB_DEBUG
-	bus->powered_up = 0;
-#endif
-}
-
 static int ssb_device_suspend(struct device *dev, pm_message_t state)
 {
 	struct ssb_device *ssb_dev = dev_to_ssb_dev(dev);
 	struct ssb_driver *ssb_drv;
-	struct ssb_bus *bus;
 	int err = 0;
 
 	if (dev->driver) {
@@ -190,19 +150,46 @@ static int ssb_device_suspend(struct device *dev, pm_message_t state)
 		if (err)
 			goto out;
 	}
+out:
+	return err;
+}
+
+int ssb_bus_resume(struct ssb_bus *bus)
+{
+	int err;
 
-	bus = ssb_dev->bus;
-	bus->suspend_cnt++;
-	if (bus->suspend_cnt == bus->nr_devices) {
-		/* All devices suspended. Shutdown the bus. */
-		ssb_bus_suspend(bus, state);
+	/* Reset HW state information in memory, so that HW is
+	 * completely reinitialized. */
+	bus->mapped_device = NULL;
+#ifdef CONFIG_SSB_DRIVER_PCICORE
+	bus->pcicore.setup_done = 0;
+#endif
+
+	err = ssb_bus_powerup(bus, 0);
+	if (err)
+		return err;
+	err = ssb_pcmcia_hardware_setup(bus);
+	if (err) {
+		ssb_bus_may_powerdown(bus);
+		return err;
 	}
+	ssb_chipco_resume(&bus->chipco);
+	ssb_bus_may_powerdown(bus);
 
-out:
-	return err;
+	return 0;
 }
+EXPORT_SYMBOL(ssb_bus_resume);
 
-#ifdef CONFIG_SSB_PCIHOST
+int ssb_bus_suspend(struct ssb_bus *bus)
+{
+	ssb_chipco_suspend(&bus->chipco);
+	ssb_pci_xtal(bus, SSB_GPIO_XTAL | SSB_GPIO_PLL, 0);
+
+	return 0;
+}
+EXPORT_SYMBOL(ssb_bus_suspend);
+
+#ifdef CONFIG_SSB_SPROM
 int ssb_devices_freeze(struct ssb_bus *bus)
 {
 	struct ssb_device *dev;
@@ -288,7 +275,7 @@ int ssb_devices_thaw(struct ssb_bus *bus)
 
 	return 0;
 }
-#endif /* CONFIG_SSB_PCIHOST */
+#endif /* CONFIG_SSB_SPROM */
 
 static void ssb_device_shutdown(struct device *dev)
 {
@@ -568,6 +555,55 @@ static u32 ssb_ssb_read32(struct ssb_device *dev, u16 offset)
 	return readl(bus->mmio + offset);
 }
 
+#ifdef CONFIG_SSB_BLOCKIO
+static void ssb_ssb_block_read(struct ssb_device *dev, void *buffer,
+			       size_t count, u16 offset, u8 reg_width)
+{
+	struct ssb_bus *bus = dev->bus;
+	void __iomem *addr;
+
+	offset += dev->core_index * SSB_CORE_SIZE;
+	addr = bus->mmio + offset;
+
+	switch (reg_width) {
+	case sizeof(u8): {
+		u8 *buf = buffer;
+
+		while (count) {
+			*buf = __raw_readb(addr);
+			buf++;
+			count--;
+		}
+		break;
+	}
+	case sizeof(u16): {
+		__le16 *buf = buffer;
+
+		SSB_WARN_ON(count & 1);
+		while (count) {
+			*buf = (__force __le16)__raw_readw(addr);
+			buf++;
+			count -= 2;
+		}
+		break;
+	}
+	case sizeof(u32): {
+		__le32 *buf = buffer;
+
+		SSB_WARN_ON(count & 3);
+		while (count) {
+			*buf = (__force __le32)__raw_readl(addr);
+			buf++;
+			count -= 4;
+		}
+		break;
+	}
+	default:
+		SSB_WARN_ON(1);
+	}
+}
+#endif /* CONFIG_SSB_BLOCKIO */
+
 static void ssb_ssb_write8(struct ssb_device *dev, u16 offset, u8 value)
 {
 	struct ssb_bus *bus = dev->bus;
@@ -592,6 +628,55 @@ static void ssb_ssb_write32(struct ssb_device *dev, u16 offset, u32 value)
 	writel(value, bus->mmio + offset);
 }
 
+#ifdef CONFIG_SSB_BLOCKIO
+static void ssb_ssb_block_write(struct ssb_device *dev, const void *buffer,
+				size_t count, u16 offset, u8 reg_width)
+{
+	struct ssb_bus *bus = dev->bus;
+	void __iomem *addr;
+
+	offset += dev->core_index * SSB_CORE_SIZE;
+	addr = bus->mmio + offset;
+
+	switch (reg_width) {
+	case sizeof(u8): {
+		const u8 *buf = buffer;
+
+		while (count) {
+			__raw_writeb(*buf, addr);
+			buf++;
+			count--;
+		}
+		break;
+	}
+	case sizeof(u16): {
+		const __le16 *buf = buffer;
+
+		SSB_WARN_ON(count & 1);
+		while (count) {
+			__raw_writew((__force u16)(*buf), addr);
+			buf++;
+			count -= 2;
+		}
+		break;
+	}
+	case sizeof(u32): {
+		const __le32 *buf = buffer;
+
+		SSB_WARN_ON(count & 3);
+		while (count) {
+			__raw_writel((__force u32)(*buf), addr);
+			buf++;
+			count -= 4;
+		}
+		break;
+	}
+	default:
+		SSB_WARN_ON(1);
+	}
+}
+#endif /* CONFIG_SSB_BLOCKIO */
+
 /* Ops for the plain SSB bus without a host-device (no PCI or PCMCIA). */
 static const struct ssb_bus_ops ssb_ssb_ops = {
 	.read8		= ssb_ssb_read8,
@@ -600,6 +685,10 @@ static const struct ssb_bus_ops ssb_ssb_ops = {
 	.write8		= ssb_ssb_write8,
 	.write16	= ssb_ssb_write16,
 	.write32	= ssb_ssb_write32,
+#ifdef CONFIG_SSB_BLOCKIO
+	.block_read	= ssb_ssb_block_read,
+	.block_write	= ssb_ssb_block_write,
+#endif
 };
 
 static int ssb_fetch_invariants(struct ssb_bus *bus,
@@ -1066,29 +1155,80 @@ u32 ssb_dma_translation(struct ssb_device *dev)
 	case SSB_BUSTYPE_SSB:
 		return 0;
 	case SSB_BUSTYPE_PCI:
-	case SSB_BUSTYPE_PCMCIA:
 		return SSB_PCI_DMA;
+	default:
+		__ssb_dma_not_implemented(dev);
 	}
 	return 0;
 }
 EXPORT_SYMBOL(ssb_dma_translation);
 
-int ssb_dma_set_mask(struct ssb_device *ssb_dev, u64 mask)
+int ssb_dma_set_mask(struct ssb_device *dev, u64 mask)
 {
-	struct device *dev = ssb_dev->dev;
-
-#ifdef CONFIG_SSB_PCIHOST
-	if (ssb_dev->bus->bustype == SSB_BUSTYPE_PCI &&
-	    !dma_supported(dev, mask))
-		return -EIO;
-#endif
-	dev->coherent_dma_mask = mask;
-	dev->dma_mask = &dev->coherent_dma_mask;
+	int err;
 
-	return 0;
+	switch (dev->bus->bustype) {
+	case SSB_BUSTYPE_PCI:
+		err = pci_set_dma_mask(dev->bus->host_pci, mask);
+		if (err)
+			return err;
+		err = pci_set_consistent_dma_mask(dev->bus->host_pci, mask);
+		return err;
+	case SSB_BUSTYPE_SSB:
+		return dma_set_mask(dev->dev, mask);
+	default:
+		__ssb_dma_not_implemented(dev);
+	}
+	return -ENOSYS;
 }
 EXPORT_SYMBOL(ssb_dma_set_mask);
 
+void * ssb_dma_alloc_consistent(struct ssb_device *dev, size_t size,
+				dma_addr_t *dma_handle, gfp_t gfp_flags)
+{
+	switch (dev->bus->bustype) {
+	case SSB_BUSTYPE_PCI:
+		if (gfp_flags & GFP_DMA) {
+			/* Workaround: The PCI API does not support passing
+			 * a GFP flag. */
+			return dma_alloc_coherent(&dev->bus->host_pci->dev,
+						  size, dma_handle, gfp_flags);
+		}
+		return pci_alloc_consistent(dev->bus->host_pci, size, dma_handle);
+	case SSB_BUSTYPE_SSB:
+		return dma_alloc_coherent(dev->dev, size, dma_handle, gfp_flags);
+	default:
+		__ssb_dma_not_implemented(dev);
+	}
+	return NULL;
+}
+EXPORT_SYMBOL(ssb_dma_alloc_consistent);
+
+void ssb_dma_free_consistent(struct ssb_device *dev, size_t size,
+			     void *vaddr, dma_addr_t dma_handle,
+			     gfp_t gfp_flags)
+{
+	switch (dev->bus->bustype) {
+	case SSB_BUSTYPE_PCI:
+		if (gfp_flags & GFP_DMA) {
+			/* Workaround: The PCI API does not support passing
+			 * a GFP flag. */
+			dma_free_coherent(&dev->bus->host_pci->dev,
+					  size, vaddr, dma_handle);
+			return;
+		}
+		pci_free_consistent(dev->bus->host_pci, size,
+				    vaddr, dma_handle);
+		return;
+	case SSB_BUSTYPE_SSB:
+		dma_free_coherent(dev->dev, size, vaddr, dma_handle);
+		return;
+	default:
+		__ssb_dma_not_implemented(dev);
+	}
+}
+EXPORT_SYMBOL(ssb_dma_free_consistent);
+
 int ssb_bus_may_powerdown(struct ssb_bus *bus)
 {
 	struct ssb_chipcommon *cc;
@@ -1101,6 +1241,12 @@ int ssb_bus_may_powerdown(struct ssb_bus *bus)
 		goto out;
 
 	cc = &bus->chipco;
+
+	if (!cc->dev)
+		goto out;
+	if (cc->dev->id.revision < 5)
+		goto out;
+
 	ssb_chipco_set_clockmode(cc, SSB_CLKMODE_SLOW);
 	err = ssb_pci_xtal(bus, SSB_GPIO_XTAL | SSB_GPIO_PLL, 0);
 	if (err)