X-Git-Url: http://git.droids-corp.org/?a=blobdiff_plain;f=drivers%2Fnet%2Fvirtio%2Fvirtio_pci.c;h=1df26a691df9ba052291f4de9aba58fe1fc5dc21;hb=ee1843bd89076c59e50cadbef5c935613f543765;hp=040f1b5fee3341e90ad54f0d62cec13b033fc80e;hpb=981e61f55f4ae70074ec394b6ef60f98d077ede9;p=dpdk.git

diff --git a/drivers/net/virtio/virtio_pci.c b/drivers/net/virtio/virtio_pci.c
index 040f1b5fee..1df26a691d 100644
--- a/drivers/net/virtio/virtio_pci.c
+++ b/drivers/net/virtio/virtio_pci.c
@@ -37,6 +37,8 @@
  #include <fcntl.h>
 #endif
 
+#include <rte_io.h>
+
 #include "virtio_pci.h"
 #include "virtio_logs.h"
 #include "virtqueue.h"
@@ -48,6 +50,7 @@
  */
 #define PCI_CAPABILITY_LIST	0x34
 #define PCI_CAP_ID_VNDR		0x09
+#define PCI_CAP_ID_MSIX		0x11
 
 /*
  * The remaining space is defined by each driver as the per-driver
@@ -219,6 +222,19 @@ legacy_set_config_irq(struct virtio_hw *hw, uint16_t vec)
 	return dst;
 }
 
+static uint16_t
+legacy_set_queue_irq(struct virtio_hw *hw, struct virtqueue *vq, uint16_t vec)
+{
+	uint16_t dst;
+
+	rte_eal_pci_ioport_write(VTPCI_IO(hw), &vq->vq_queue_index, 2,
+				 VIRTIO_PCI_QUEUE_SEL);
+	rte_eal_pci_ioport_write(VTPCI_IO(hw), &vec, 2,
+				 VIRTIO_MSI_QUEUE_VECTOR);
+	rte_eal_pci_ioport_read(VTPCI_IO(hw), &dst, 2, VIRTIO_MSI_QUEUE_VECTOR);
+	return dst;
+}
+
 static uint16_t
 legacy_get_queue_num(struct virtio_hw *hw, uint16_t queue_id)
 {
@@ -263,47 +279,6 @@ legacy_notify_queue(struct virtio_hw *hw, struct virtqueue *vq)
 			 VIRTIO_PCI_QUEUE_NOTIFY);
 }
 
-#ifdef RTE_EXEC_ENV_LINUXAPP
-static int
-legacy_virtio_has_msix(const struct rte_pci_addr *loc)
-{
-	DIR *d;
-	char dirname[PATH_MAX];
-
-	snprintf(dirname, sizeof(dirname),
-		     "%s/" PCI_PRI_FMT "/msi_irqs", pci_get_sysfs_path(),
-		     loc->domain, loc->bus, loc->devid, loc->function);
-
-	d = opendir(dirname);
-	if (d)
-		closedir(d);
-
-	return d != NULL;
-}
-#else
-static int
-legacy_virtio_has_msix(const struct rte_pci_addr *loc __rte_unused)
-{
-	/* nic_uio does not enable interrupts, return 0 (false). */
-	return 0;
-}
-#endif
-
-static int
-legacy_virtio_resource_init(struct rte_pci_device *pci_dev,
-			    struct virtio_hw *hw, uint32_t *dev_flags)
-{
-	if (rte_eal_pci_ioport_map(pci_dev, 0, VTPCI_IO(hw)) < 0)
-		return -1;
-
-	if (pci_dev->intr_handle.type != RTE_INTR_HANDLE_UNKNOWN)
-		*dev_flags |= RTE_ETH_DEV_INTR_LSC;
-	else
-		*dev_flags &= ~RTE_ETH_DEV_INTR_LSC;
-
-	return 0;
-}
-
 const struct virtio_pci_ops legacy_ops = {
 	.read_dev_cfg	= legacy_read_dev_config,
 	.write_dev_cfg	= legacy_write_dev_config,
@@ -314,54 +289,18 @@ const struct virtio_pci_ops legacy_ops = {
 	.set_features	= legacy_set_features,
 	.get_isr	= legacy_get_isr,
 	.set_config_irq	= legacy_set_config_irq,
+	.set_queue_irq  = legacy_set_queue_irq,
 	.get_queue_num	= legacy_get_queue_num,
 	.setup_queue	= legacy_setup_queue,
 	.del_queue	= legacy_del_queue,
 	.notify_queue	= legacy_notify_queue,
 };
 
-
-static inline uint8_t
-io_read8(uint8_t *addr)
-{
-	return *(volatile uint8_t *)addr;
-}
-
-static inline void
-io_write8(uint8_t val, uint8_t *addr)
-{
-	*(volatile uint8_t *)addr = val;
-}
-
-static inline uint16_t
-io_read16(uint16_t *addr)
-{
-	return *(volatile uint16_t *)addr;
-}
-
-static inline void
-io_write16(uint16_t val, uint16_t *addr)
-{
-	*(volatile uint16_t *)addr = val;
-}
-
-static inline uint32_t
-io_read32(uint32_t *addr)
-{
-	return *(volatile uint32_t *)addr;
-}
-
-static inline void
-io_write32(uint32_t val, uint32_t *addr)
-{
-	*(volatile uint32_t *)addr = val;
-}
-
 static inline void
 io_write64_twopart(uint64_t val, uint32_t *lo, uint32_t *hi)
 {
-	io_write32(val & ((1ULL << 32) - 1), lo);
-	io_write32(val >> 32,		     hi);
+	rte_write32(val & ((1ULL << 32) - 1), lo);
+	rte_write32(val >> 32,		     hi);
 }
 
 static void
@@ -373,13 +312,13 @@ modern_read_dev_config(struct virtio_hw *hw, size_t offset,
 	uint8_t old_gen, new_gen;
 
 	do {
-		old_gen = io_read8(&hw->common_cfg->config_generation);
+		old_gen = rte_read8(&hw->common_cfg->config_generation);
 
 		p = dst;
 		for (i = 0;  i < length; i++)
-			*p++ = io_read8((uint8_t *)hw->dev_cfg + offset + i);
+			*p++ = rte_read8((uint8_t *)hw->dev_cfg + offset + i);
 
-		new_gen = io_read8(&hw->common_cfg->config_generation);
+		new_gen = rte_read8(&hw->common_cfg->config_generation);
 	} while (old_gen != new_gen);
 }
 
@@ -391,7 +330,7 @@ modern_write_dev_config(struct virtio_hw *hw, size_t offset,
 	const uint8_t *p = src;
 
 	for (i = 0;  i < length; i++)
-		io_write8(*p++, (uint8_t *)hw->dev_cfg + offset + i);
+		rte_write8((*p++), (((uint8_t *)hw->dev_cfg) + offset + i));
 }
 
 static uint64_t
@@ -399,11 +338,11 @@ modern_get_features(struct virtio_hw *hw)
 {
 	uint32_t features_lo, features_hi;
 
-	io_write32(0, &hw->common_cfg->device_feature_select);
-	features_lo = io_read32(&hw->common_cfg->device_feature);
+	rte_write32(0, &hw->common_cfg->device_feature_select);
+	features_lo = rte_read32(&hw->common_cfg->device_feature);
 
-	io_write32(1, &hw->common_cfg->device_feature_select);
-	features_hi = io_read32(&hw->common_cfg->device_feature);
+	rte_write32(1, &hw->common_cfg->device_feature_select);
+	features_hi = rte_read32(&hw->common_cfg->device_feature);
 
 	return ((uint64_t)features_hi << 32) | features_lo;
 }
@@ -411,25 +350,25 @@ modern_get_features(struct virtio_hw *hw)
 static void
 modern_set_features(struct virtio_hw *hw, uint64_t features)
 {
-	io_write32(0, &hw->common_cfg->guest_feature_select);
-	io_write32(features & ((1ULL << 32) - 1),
-		&hw->common_cfg->guest_feature);
+	rte_write32(0, &hw->common_cfg->guest_feature_select);
+	rte_write32(features & ((1ULL << 32) - 1),
+		    &hw->common_cfg->guest_feature);
 
-	io_write32(1, &hw->common_cfg->guest_feature_select);
-	io_write32(features >> 32,
-		&hw->common_cfg->guest_feature);
+	rte_write32(1, &hw->common_cfg->guest_feature_select);
+	rte_write32(features >> 32,
+		    &hw->common_cfg->guest_feature);
 }
 
 static uint8_t
 modern_get_status(struct virtio_hw *hw)
 {
-	return io_read8(&hw->common_cfg->device_status);
+	return rte_read8(&hw->common_cfg->device_status);
 }
 
 static void
 modern_set_status(struct virtio_hw *hw, uint8_t status)
 {
-	io_write8(status, &hw->common_cfg->device_status);
+	rte_write8(status, &hw->common_cfg->device_status);
 }
 
 static void
@@ -442,21 +381,29 @@ modern_reset(struct virtio_hw *hw)
 static uint8_t
 modern_get_isr(struct virtio_hw *hw)
 {
-	return io_read8(hw->isr);
+	return rte_read8(hw->isr);
 }
 
 static uint16_t
 modern_set_config_irq(struct virtio_hw *hw, uint16_t vec)
 {
-	io_write16(vec, &hw->common_cfg->msix_config);
-	return io_read16(&hw->common_cfg->msix_config);
+	rte_write16(vec, &hw->common_cfg->msix_config);
+	return rte_read16(&hw->common_cfg->msix_config);
+}
+
+static uint16_t
+modern_set_queue_irq(struct virtio_hw *hw, struct virtqueue *vq, uint16_t vec)
+{
+	rte_write16(vq->vq_queue_index, &hw->common_cfg->queue_select);
+	rte_write16(vec, &hw->common_cfg->queue_msix_vector);
+	return rte_read16(&hw->common_cfg->queue_msix_vector);
 }
 
 static uint16_t
 modern_get_queue_num(struct virtio_hw *hw, uint16_t queue_id)
 {
-	io_write16(queue_id, &hw->common_cfg->queue_select);
-	return io_read16(&hw->common_cfg->queue_size);
+	rte_write16(queue_id, &hw->common_cfg->queue_select);
+	return rte_read16(&hw->common_cfg->queue_size);
 }
 
 static int
@@ -474,7 +421,7 @@ modern_setup_queue(struct virtio_hw *hw, struct virtqueue *vq)
 							 ring[vq->vq_nentries]),
 				   VIRTIO_PCI_VRING_ALIGN);
 
-	io_write16(vq->vq_queue_index, &hw->common_cfg->queue_select);
+	rte_write16(vq->vq_queue_index, &hw->common_cfg->queue_select);
 
 	io_write64_twopart(desc_addr, &hw->common_cfg->queue_desc_lo,
 				      &hw->common_cfg->queue_desc_hi);
@@ -483,11 +430,11 @@ modern_setup_queue(struct virtio_hw *hw, struct virtqueue *vq)
 	io_write64_twopart(used_addr, &hw->common_cfg->queue_used_lo,
 				      &hw->common_cfg->queue_used_hi);
 
-	notify_off = io_read16(&hw->common_cfg->queue_notify_off);
+	notify_off = rte_read16(&hw->common_cfg->queue_notify_off);
 	vq->notify_addr = (void *)((uint8_t *)hw->notify_base +
 				notify_off * hw->notify_off_multiplier);
 
-	io_write16(1, &hw->common_cfg->queue_enable);
+	rte_write16(1, &hw->common_cfg->queue_enable);
 
 	PMD_INIT_LOG(DEBUG, "queue %u addresses:", vq->vq_queue_index);
 	PMD_INIT_LOG(DEBUG, "\t desc_addr: %" PRIx64, desc_addr);
@@ -502,7 +449,7 @@ modern_setup_queue(struct virtio_hw *hw, struct virtqueue *vq)
 static void
 modern_del_queue(struct virtio_hw *hw, struct virtqueue *vq)
 {
-	io_write16(vq->vq_queue_index, &hw->common_cfg->queue_select);
+	rte_write16(vq->vq_queue_index, &hw->common_cfg->queue_select);
 
 	io_write64_twopart(0, &hw->common_cfg->queue_desc_lo,
 				  &hw->common_cfg->queue_desc_hi);
@@ -511,13 +458,13 @@ modern_del_queue(struct virtio_hw *hw, struct virtqueue *vq)
 	io_write64_twopart(0, &hw->common_cfg->queue_used_lo,
 				  &hw->common_cfg->queue_used_hi);
 
-	io_write16(0, &hw->common_cfg->queue_enable);
+	rte_write16(0, &hw->common_cfg->queue_enable);
 }
 
 static void
 modern_notify_queue(struct virtio_hw *hw __rte_unused, struct virtqueue *vq)
 {
-	io_write16(1, vq->notify_addr);
+	rte_write16(vq->vq_queue_index, vq->notify_addr);
 }
 
 const struct virtio_pci_ops modern_ops = {
@@ -530,6 +477,7 @@ const struct virtio_pci_ops modern_ops = {
 	.set_features	= modern_set_features,
 	.get_isr	= modern_get_isr,
 	.set_config_irq	= modern_set_config_irq,
+	.set_queue_irq  = modern_set_queue_irq,
 	.get_queue_num	= modern_get_queue_num,
 	.setup_queue	= modern_setup_queue,
 	.del_queue	= modern_del_queue,
@@ -662,6 +610,9 @@ virtio_read_caps(struct rte_pci_device *dev, struct virtio_hw *hw)
 			break;
 		}
 
+		if (cap.cap_vndr == PCI_CAP_ID_MSIX)
+			hw->use_msix = 1;
+
 		if (cap.cap_vndr != PCI_CAP_ID_VNDR) {
 			PMD_INIT_LOG(DEBUG,
 				"[%2x] skipping non VNDR cap id: %02x",
@@ -720,8 +671,7 @@ next:
  * Return 0 on success.
  */
 int
-vtpci_init(struct rte_pci_device *dev, struct virtio_hw *hw,
-	   uint32_t *dev_flags)
+vtpci_init(struct rte_pci_device *dev, struct virtio_hw *hw)
 {
 	/*
 	 * Try if we can succeed reading virtio pci caps, which exists
@@ -732,12 +682,11 @@ vtpci_init(struct rte_pci_device *dev, struct virtio_hw *hw,
 		PMD_INIT_LOG(INFO, "modern virtio pci detected.");
 		virtio_hw_internal[hw->port_id].vtpci_ops = &modern_ops;
 		hw->modern = 1;
-		*dev_flags |= RTE_ETH_DEV_INTR_LSC;
 		return 0;
 	}
 
 	PMD_INIT_LOG(INFO, "trying with legacy virtio pci.");
-	if (legacy_virtio_resource_init(dev, hw, dev_flags) < 0) {
+	if (rte_eal_pci_ioport_map(dev, 0, VTPCI_IO(hw)) < 0) {
 		if (dev->kdrv == RTE_KDRV_UNKNOWN &&
 		    (!dev->device.devargs ||
 		     dev->device.devargs->type !=
@@ -750,7 +699,6 @@ vtpci_init(struct rte_pci_device *dev, struct virtio_hw *hw,
 	}
 
 	virtio_hw_internal[hw->port_id].vtpci_ops = &legacy_ops;
-	hw->use_msix = legacy_virtio_has_msix(&dev->addr);
 	hw->modern   = 0;
 
 	return 0;