enic: add support for multiple BARs
Nic firmware can place resources (queues, intrs, etc) on multiple BARs, so allow driver to discover/map resources beyond BAR0. Signed-off-by: Scott Feldman <scofeldm@cisco.com> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
parent
1a123a3168
commit
27e6c7d338
|
@ -33,13 +33,15 @@
|
|||
|
||||
#define DRV_NAME "enic"
|
||||
#define DRV_DESCRIPTION "Cisco 10G Ethernet Driver"
|
||||
#define DRV_VERSION "1.0.0.933"
|
||||
#define DRV_COPYRIGHT "Copyright 2008 Cisco Systems, Inc"
|
||||
#define DRV_VERSION "1.1.0.100"
|
||||
#define DRV_COPYRIGHT "Copyright 2008-2009 Cisco Systems, Inc"
|
||||
#define PFX DRV_NAME ": "
|
||||
|
||||
#define ENIC_LRO_MAX_DESC 8
|
||||
#define ENIC_LRO_MAX_AGGR 64
|
||||
|
||||
#define ENIC_BARS_MAX 6
|
||||
|
||||
enum enic_cq_index {
|
||||
ENIC_CQ_RQ,
|
||||
ENIC_CQ_WQ,
|
||||
|
@ -73,7 +75,7 @@ struct enic {
|
|||
struct net_device *netdev;
|
||||
struct pci_dev *pdev;
|
||||
struct vnic_enet_config config;
|
||||
struct vnic_dev_bar bar0;
|
||||
struct vnic_dev_bar bar[ENIC_BARS_MAX];
|
||||
struct vnic_dev *vdev;
|
||||
struct timer_list notify_timer;
|
||||
struct work_struct reset;
|
||||
|
|
|
@ -1609,12 +1609,6 @@ static void enic_clear_intr_mode(struct enic *enic)
|
|||
vnic_dev_set_intr_mode(enic->vdev, VNIC_DEV_INTR_MODE_UNKNOWN);
|
||||
}
|
||||
|
||||
static void enic_iounmap(struct enic *enic)
|
||||
{
|
||||
if (enic->bar0.vaddr)
|
||||
iounmap(enic->bar0.vaddr);
|
||||
}
|
||||
|
||||
static const struct net_device_ops enic_netdev_ops = {
|
||||
.ndo_open = enic_open,
|
||||
.ndo_stop = enic_stop,
|
||||
|
@ -1633,6 +1627,15 @@ static const struct net_device_ops enic_netdev_ops = {
|
|||
#endif
|
||||
};
|
||||
|
||||
static void enic_iounmap(struct enic *enic)
|
||||
{
|
||||
unsigned int i;
|
||||
|
||||
for (i = 0; i < ARRAY_SIZE(enic->bar); i++)
|
||||
if (enic->bar[i].vaddr)
|
||||
iounmap(enic->bar[i].vaddr);
|
||||
}
|
||||
|
||||
static int __devinit enic_probe(struct pci_dev *pdev,
|
||||
const struct pci_device_id *ent)
|
||||
{
|
||||
|
@ -1710,31 +1713,28 @@ static int __devinit enic_probe(struct pci_dev *pdev,
|
|||
using_dac = 1;
|
||||
}
|
||||
|
||||
/* Map vNIC resources from BAR0
|
||||
/* Map vNIC resources from BAR0-5
|
||||
*/
|
||||
|
||||
if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
|
||||
printk(KERN_ERR PFX
|
||||
"BAR0 not memory-map'able, aborting.\n");
|
||||
err = -ENODEV;
|
||||
goto err_out_release_regions;
|
||||
}
|
||||
|
||||
enic->bar0.vaddr = pci_iomap(pdev, 0, enic->bar0.len);
|
||||
enic->bar0.bus_addr = pci_resource_start(pdev, 0);
|
||||
enic->bar0.len = pci_resource_len(pdev, 0);
|
||||
|
||||
if (!enic->bar0.vaddr) {
|
||||
printk(KERN_ERR PFX
|
||||
"Cannot memory-map BAR0 res hdr, aborting.\n");
|
||||
err = -ENODEV;
|
||||
goto err_out_release_regions;
|
||||
for (i = 0; i < ARRAY_SIZE(enic->bar); i++) {
|
||||
if (!(pci_resource_flags(pdev, i) & IORESOURCE_MEM))
|
||||
continue;
|
||||
enic->bar[i].len = pci_resource_len(pdev, i);
|
||||
enic->bar[i].vaddr = pci_iomap(pdev, i, enic->bar[i].len);
|
||||
if (!enic->bar[i].vaddr) {
|
||||
printk(KERN_ERR PFX
|
||||
"Cannot memory-map BAR %d, aborting.\n", i);
|
||||
err = -ENODEV;
|
||||
goto err_out_iounmap;
|
||||
}
|
||||
enic->bar[i].bus_addr = pci_resource_start(pdev, i);
|
||||
}
|
||||
|
||||
/* Register vNIC device
|
||||
*/
|
||||
|
||||
enic->vdev = vnic_dev_register(NULL, enic, pdev, &enic->bar0);
|
||||
enic->vdev = vnic_dev_register(NULL, enic, pdev, enic->bar,
|
||||
ARRAY_SIZE(enic->bar));
|
||||
if (!enic->vdev) {
|
||||
printk(KERN_ERR PFX
|
||||
"vNIC registration failed, aborting.\n");
|
||||
|
|
|
@ -31,6 +31,7 @@
|
|||
|
||||
struct vnic_res {
|
||||
void __iomem *vaddr;
|
||||
dma_addr_t bus_addr;
|
||||
unsigned int count;
|
||||
};
|
||||
|
||||
|
@ -67,12 +68,15 @@ void *vnic_dev_priv(struct vnic_dev *vdev)
|
|||
}
|
||||
|
||||
static int vnic_dev_discover_res(struct vnic_dev *vdev,
|
||||
struct vnic_dev_bar *bar)
|
||||
struct vnic_dev_bar *bar, unsigned int num_bars)
|
||||
{
|
||||
struct vnic_resource_header __iomem *rh;
|
||||
struct vnic_resource __iomem *r;
|
||||
u8 type;
|
||||
|
||||
if (num_bars == 0)
|
||||
return -EINVAL;
|
||||
|
||||
if (bar->len < VNIC_MAX_RES_HDR_SIZE) {
|
||||
printk(KERN_ERR "vNIC BAR0 res hdr length error\n");
|
||||
return -EINVAL;
|
||||
|
@ -104,7 +108,10 @@ static int vnic_dev_discover_res(struct vnic_dev *vdev,
|
|||
|
||||
r++;
|
||||
|
||||
if (bar_num != 0) /* only mapping in BAR0 resources */
|
||||
if (bar_num >= num_bars)
|
||||
continue;
|
||||
|
||||
if (!bar[bar_num].len || !bar[bar_num].vaddr)
|
||||
continue;
|
||||
|
||||
switch (type) {
|
||||
|
@ -114,13 +121,13 @@ static int vnic_dev_discover_res(struct vnic_dev *vdev,
|
|||
case RES_TYPE_INTR_CTRL:
|
||||
/* each count is stride bytes long */
|
||||
len = count * VNIC_RES_STRIDE;
|
||||
if (len + bar_offset > bar->len) {
|
||||
if (len + bar_offset > bar[bar_num].len) {
|
||||
printk(KERN_ERR "vNIC BAR0 resource %d "
|
||||
"out-of-bounds, offset 0x%x + "
|
||||
"size 0x%x > bar len 0x%lx\n",
|
||||
type, bar_offset,
|
||||
len,
|
||||
bar->len);
|
||||
bar[bar_num].len);
|
||||
return -EINVAL;
|
||||
}
|
||||
break;
|
||||
|
@ -133,7 +140,9 @@ static int vnic_dev_discover_res(struct vnic_dev *vdev,
|
|||
}
|
||||
|
||||
vdev->res[type].count = count;
|
||||
vdev->res[type].vaddr = (char __iomem *)bar->vaddr + bar_offset;
|
||||
vdev->res[type].vaddr = (char __iomem *)bar[bar_num].vaddr +
|
||||
bar_offset;
|
||||
vdev->res[type].bus_addr = bar[bar_num].bus_addr + bar_offset;
|
||||
}
|
||||
|
||||
return 0;
|
||||
|
@ -163,6 +172,21 @@ void __iomem *vnic_dev_get_res(struct vnic_dev *vdev, enum vnic_res_type type,
|
|||
}
|
||||
}
|
||||
|
||||
dma_addr_t vnic_dev_get_res_bus_addr(struct vnic_dev *vdev,
|
||||
enum vnic_res_type type, unsigned int index)
|
||||
{
|
||||
switch (type) {
|
||||
case RES_TYPE_WQ:
|
||||
case RES_TYPE_RQ:
|
||||
case RES_TYPE_CQ:
|
||||
case RES_TYPE_INTR_CTRL:
|
||||
return vdev->res[type].bus_addr +
|
||||
index * VNIC_RES_STRIDE;
|
||||
default:
|
||||
return vdev->res[type].bus_addr;
|
||||
}
|
||||
}
|
||||
|
||||
unsigned int vnic_dev_desc_ring_size(struct vnic_dev_ring *ring,
|
||||
unsigned int desc_count, unsigned int desc_size)
|
||||
{
|
||||
|
@ -257,7 +281,7 @@ int vnic_dev_cmd(struct vnic_dev *vdev, enum vnic_devcmd_cmd cmd,
|
|||
iowrite32(cmd, &devcmd->cmd);
|
||||
|
||||
if ((_CMD_FLAGS(cmd) & _CMD_FLAGS_NOWAIT))
|
||||
return 0;
|
||||
return 0;
|
||||
|
||||
for (delay = 0; delay < wait; delay++) {
|
||||
|
||||
|
@ -684,7 +708,8 @@ void vnic_dev_unregister(struct vnic_dev *vdev)
|
|||
}
|
||||
|
||||
struct vnic_dev *vnic_dev_register(struct vnic_dev *vdev,
|
||||
void *priv, struct pci_dev *pdev, struct vnic_dev_bar *bar)
|
||||
void *priv, struct pci_dev *pdev, struct vnic_dev_bar *bar,
|
||||
unsigned int num_bars)
|
||||
{
|
||||
if (!vdev) {
|
||||
vdev = kzalloc(sizeof(struct vnic_dev), GFP_ATOMIC);
|
||||
|
@ -695,7 +720,7 @@ struct vnic_dev *vnic_dev_register(struct vnic_dev *vdev,
|
|||
vdev->priv = priv;
|
||||
vdev->pdev = pdev;
|
||||
|
||||
if (vnic_dev_discover_res(vdev, bar))
|
||||
if (vnic_dev_discover_res(vdev, bar, num_bars))
|
||||
goto err_out;
|
||||
|
||||
vdev->devcmd = vnic_dev_get_res(vdev, RES_TYPE_DEVCMD, 0);
|
||||
|
|
|
@ -75,6 +75,8 @@ unsigned int vnic_dev_get_res_count(struct vnic_dev *vdev,
|
|||
enum vnic_res_type type);
|
||||
void __iomem *vnic_dev_get_res(struct vnic_dev *vdev, enum vnic_res_type type,
|
||||
unsigned int index);
|
||||
dma_addr_t vnic_dev_get_res_bus_addr(struct vnic_dev *vdev,
|
||||
enum vnic_res_type type, unsigned int index);
|
||||
unsigned int vnic_dev_desc_ring_size(struct vnic_dev_ring *ring,
|
||||
unsigned int desc_count, unsigned int desc_size);
|
||||
void vnic_dev_clear_desc_ring(struct vnic_dev_ring *ring);
|
||||
|
@ -117,6 +119,7 @@ void vnic_dev_set_intr_mode(struct vnic_dev *vdev,
|
|||
enum vnic_dev_intr_mode vnic_dev_get_intr_mode(struct vnic_dev *vdev);
|
||||
void vnic_dev_unregister(struct vnic_dev *vdev);
|
||||
struct vnic_dev *vnic_dev_register(struct vnic_dev *vdev,
|
||||
void *priv, struct pci_dev *pdev, struct vnic_dev_bar *bar);
|
||||
void *priv, struct pci_dev *pdev, struct vnic_dev_bar *bar,
|
||||
unsigned int num_bars);
|
||||
|
||||
#endif /* _VNIC_DEV_H_ */
|
||||
|
|
Loading…
Reference in a new issue