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path: root/drivers/net/ethernet/cavium/liquidio/octeon_device.c
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Diffstat (limited to 'drivers/net/ethernet/cavium/liquidio/octeon_device.c')
-rw-r--r--drivers/net/ethernet/cavium/liquidio/octeon_device.c103
1 files changed, 89 insertions, 14 deletions
diff --git a/drivers/net/ethernet/cavium/liquidio/octeon_device.c b/drivers/net/ethernet/cavium/liquidio/octeon_device.c
index e21b477d0159..623e28ca736e 100644
--- a/drivers/net/ethernet/cavium/liquidio/octeon_device.c
+++ b/drivers/net/ethernet/cavium/liquidio/octeon_device.c
@@ -51,7 +51,6 @@ static struct octeon_config default_cn66xx_conf = {
/** OQ attributes */
.oq = {
.max_oqs = CN6XXX_CFG_IO_QUEUES,
- .info_ptr = OCTEON_OQ_INFOPTR_MODE,
.refill_threshold = CN6XXX_OQ_REFIL_THRESHOLD,
.oq_intr_pkt = CN6XXX_OQ_INTR_PKT,
.oq_intr_time = CN6XXX_OQ_INTR_TIME,
@@ -161,7 +160,6 @@ static struct octeon_config default_cn68xx_conf = {
/** OQ attributes */
.oq = {
.max_oqs = CN6XXX_CFG_IO_QUEUES,
- .info_ptr = OCTEON_OQ_INFOPTR_MODE,
.refill_threshold = CN6XXX_OQ_REFIL_THRESHOLD,
.oq_intr_pkt = CN6XXX_OQ_INTR_PKT,
.oq_intr_time = CN6XXX_OQ_INTR_TIME,
@@ -328,7 +326,6 @@ static struct octeon_config default_cn68xx_210nv_conf = {
/** OQ attributes */
.oq = {
.max_oqs = CN6XXX_CFG_IO_QUEUES,
- .info_ptr = OCTEON_OQ_INFOPTR_MODE,
.refill_threshold = CN6XXX_OQ_REFIL_THRESHOLD,
.oq_intr_pkt = CN6XXX_OQ_INTR_PKT,
.oq_intr_time = CN6XXX_OQ_INTR_TIME,
@@ -432,7 +429,6 @@ static struct octeon_config default_cn23xx_conf = {
/** OQ attributes */
.oq = {
.max_oqs = CN23XX_CFG_IO_QUEUES,
- .info_ptr = OCTEON_OQ_INFOPTR_MODE,
.pkts_per_intr = CN23XX_OQ_PKTSPER_INTR,
.refill_threshold = CN23XX_OQ_REFIL_THRESHOLD,
.oq_intr_pkt = CN23XX_OQ_INTR_PKT,
@@ -543,7 +539,11 @@ static char oct_dev_app_str[CVM_DRV_APP_COUNT + 1][32] = {
"BASE", "NIC", "UNKNOWN"};
static struct octeon_device *octeon_device[MAX_OCTEON_DEVICES];
+static atomic_t adapter_refcounts[MAX_OCTEON_DEVICES];
+
static u32 octeon_device_count;
+/* locks device array (i.e. octeon_device[]) */
+static spinlock_t octeon_devices_lock;
static struct octeon_core_setup core_setup[MAX_OCTEON_DEVICES];
@@ -561,6 +561,7 @@ void octeon_init_device_list(int conf_type)
memset(octeon_device, 0, (sizeof(void *) * MAX_OCTEON_DEVICES));
for (i = 0; i < MAX_OCTEON_DEVICES; i++)
oct_set_config_info(i, conf_type);
+ spin_lock_init(&octeon_devices_lock);
}
static void *__retrieve_octeon_config_info(struct octeon_device *oct,
@@ -720,23 +721,27 @@ struct octeon_device *octeon_allocate_device(u32 pci_id,
u32 oct_idx = 0;
struct octeon_device *oct = NULL;
+ spin_lock(&octeon_devices_lock);
+
for (oct_idx = 0; oct_idx < MAX_OCTEON_DEVICES; oct_idx++)
if (!octeon_device[oct_idx])
break;
- if (oct_idx == MAX_OCTEON_DEVICES)
- return NULL;
+ if (oct_idx < MAX_OCTEON_DEVICES) {
+ oct = octeon_allocate_device_mem(pci_id, priv_size);
+ if (oct) {
+ octeon_device_count++;
+ octeon_device[oct_idx] = oct;
+ }
+ }
- oct = octeon_allocate_device_mem(pci_id, priv_size);
+ spin_unlock(&octeon_devices_lock);
if (!oct)
return NULL;
spin_lock_init(&oct->pci_win_lock);
spin_lock_init(&oct->mem_access_lock);
- octeon_device_count++;
- octeon_device[oct_idx] = oct;
-
oct->octeon_id = oct_idx;
snprintf(oct->device_name, sizeof(oct->device_name),
"LiquidIO%d", (oct->octeon_id));
@@ -744,6 +749,72 @@ struct octeon_device *octeon_allocate_device(u32 pci_id,
return oct;
}
+/** Register a device's bus location at initialization time.
+ * @param octeon_dev - pointer to the octeon device structure.
+ * @param bus - PCIe bus #
+ * @param dev - PCIe device #
+ * @param func - PCIe function #
+ * @param is_pf - TRUE for PF, FALSE for VF
+ * @return reference count of device's adapter
+ */
+int octeon_register_device(struct octeon_device *oct,
+ int bus, int dev, int func, int is_pf)
+{
+ int idx, refcount;
+
+ oct->loc.bus = bus;
+ oct->loc.dev = dev;
+ oct->loc.func = func;
+
+ oct->adapter_refcount = &adapter_refcounts[oct->octeon_id];
+ atomic_set(oct->adapter_refcount, 0);
+
+ spin_lock(&octeon_devices_lock);
+ for (idx = (int)oct->octeon_id - 1; idx >= 0; idx--) {
+ if (!octeon_device[idx]) {
+ dev_err(&oct->pci_dev->dev,
+ "%s: Internal driver error, missing dev",
+ __func__);
+ spin_unlock(&octeon_devices_lock);
+ atomic_inc(oct->adapter_refcount);
+ return 1; /* here, refcount is guaranteed to be 1 */
+ }
+ /* if another device is at same bus/dev, use its refcounter */
+ if ((octeon_device[idx]->loc.bus == bus) &&
+ (octeon_device[idx]->loc.dev == dev)) {
+ oct->adapter_refcount =
+ octeon_device[idx]->adapter_refcount;
+ break;
+ }
+ }
+ spin_unlock(&octeon_devices_lock);
+
+ atomic_inc(oct->adapter_refcount);
+ refcount = atomic_read(oct->adapter_refcount);
+
+ dev_dbg(&oct->pci_dev->dev, "%s: %02x:%02x:%d refcount %u", __func__,
+ oct->loc.bus, oct->loc.dev, oct->loc.func, refcount);
+
+ return refcount;
+}
+
+/** Deregister a device at de-initialization time.
+ * @param octeon_dev - pointer to the octeon device structure.
+ * @return reference count of device's adapter
+ */
+int octeon_deregister_device(struct octeon_device *oct)
+{
+ int refcount;
+
+ atomic_dec(oct->adapter_refcount);
+ refcount = atomic_read(oct->adapter_refcount);
+
+ dev_dbg(&oct->pci_dev->dev, "%s: %04d:%02d:%d refcount %u", __func__,
+ oct->loc.bus, oct->loc.dev, oct->loc.func, refcount);
+
+ return refcount;
+}
+
int
octeon_allocate_ioq_vector(struct octeon_device *oct)
{
@@ -1161,13 +1232,15 @@ int octeon_core_drv_init(struct octeon_recv_info *recv_info, void *buf)
cs = &core_setup[oct->octeon_id];
- if (recv_pkt->buffer_size[0] != sizeof(*cs)) {
+ if (recv_pkt->buffer_size[0] != (sizeof(*cs) + OCT_DROQ_INFO_SIZE)) {
dev_dbg(&oct->pci_dev->dev, "Core setup bytes expected %u found %d\n",
(u32)sizeof(*cs),
recv_pkt->buffer_size[0]);
}
- memcpy(cs, get_rbd(recv_pkt->buffer_ptr[0]), sizeof(*cs));
+ memcpy(cs, get_rbd(
+ recv_pkt->buffer_ptr[0]) + OCT_DROQ_INFO_SIZE, sizeof(*cs));
+
strncpy(oct->boardinfo.name, cs->boardname, OCT_BOARD_NAME);
strncpy(oct->boardinfo.serial_number, cs->board_serial_number,
OCT_SERIAL_LEN);
@@ -1354,13 +1427,15 @@ int lio_get_device_id(void *dev)
void lio_enable_irq(struct octeon_droq *droq, struct octeon_instr_queue *iq)
{
u64 instr_cnt;
+ u32 pkts_pend;
struct octeon_device *oct = NULL;
/* the whole thing needs to be atomic, ideally */
if (droq) {
+ pkts_pend = (u32)atomic_read(&droq->pkts_pending);
spin_lock_bh(&droq->lock);
- writel(droq->pkt_count, droq->pkts_sent_reg);
- droq->pkt_count = 0;
+ writel(droq->pkt_count - pkts_pend, droq->pkts_sent_reg);
+ droq->pkt_count = pkts_pend;
/* this write needs to be flushed before we release the lock */
mmiowb();
spin_unlock_bh(&droq->lock);
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-04 06:46:25 +0300