@@ -918,9 +918,9 @@ nfp_pf_init(struct rte_pci_device *pci_dev)
* use a lock file if UIO is being used.
*/
if (pci_dev->kdrv == RTE_PCI_KDRV_VFIO)
- cpp = nfp_cpp_from_nfp6000_pcie(pci_dev, false);
+ cpp = nfp_cpp_from_nfp6000_pcie(pci_dev, dev_info, false);
else
- cpp = nfp_cpp_from_nfp6000_pcie(pci_dev, true);
+ cpp = nfp_cpp_from_nfp6000_pcie(pci_dev, dev_info, true);
if (cpp == NULL) {
PMD_INIT_LOG(ERR, "A CPP handle can not be obtained");
@@ -1121,9 +1121,9 @@ nfp_pf_secondary_init(struct rte_pci_device *pci_dev)
* use a lock file if UIO is being used.
*/
if (pci_dev->kdrv == RTE_PCI_KDRV_VFIO)
- cpp = nfp_cpp_from_nfp6000_pcie(pci_dev, false);
+ cpp = nfp_cpp_from_nfp6000_pcie(pci_dev, dev_info, false);
else
- cpp = nfp_cpp_from_nfp6000_pcie(pci_dev, true);
+ cpp = nfp_cpp_from_nfp6000_pcie(pci_dev, dev_info, true);
if (cpp == NULL) {
PMD_INIT_LOG(ERR, "A CPP handle can not be obtained");
@@ -19,6 +19,8 @@
#include <unistd.h>
#include <fcntl.h>
+#include <rte_io.h>
+
#include "nfp_cpp.h"
#include "nfp_logs.h"
#include "nfp_target.h"
@@ -59,20 +61,12 @@
#define NFP_PCIE_P2C_GENERAL_TOKEN_OFFSET(bar, x) ((x) << ((bar)->bitsize - 4))
#define NFP_PCIE_P2C_GENERAL_SIZE(bar) (1 << ((bar)->bitsize - 4))
-#define NFP_PCIE_CFG_BAR_PCIETOCPPEXPBAR(id, bar, slot) \
- (NFP_PCIE_BAR(id) + ((bar) * 8 + (slot)) * 4)
-
-#define NFP_PCIE_CPP_BAR_PCIETOCPPEXPBAR(bar, slot) \
- (((bar) * 8 + (slot)) * 4)
+#define NFP_PCIE_P2C_EXPBAR_OFFSET(bar_index) ((bar_index) * 4)
struct nfp_pcie_user;
struct nfp6000_area_priv;
/* Describes BAR configuration and usage */
-#define NFP_BAR_MIN 1
-#define NFP_BAR_MID 5
-#define NFP_BAR_MAX 7
-
struct nfp_bar {
struct nfp_pcie_user *nfp; /**< Backlink to owner */
uint32_t barcfg; /**< BAR config CSR */
@@ -80,22 +74,26 @@ struct nfp_bar {
uint64_t mask; /**< Mask of the BAR aperture (read only) */
uint32_t bitsize; /**< Bit size of the BAR aperture (read only) */
uint32_t index; /**< Index of the BAR */
- int lock; /**< If the BAR has been locked */
+ bool lock; /**< If the BAR has been locked */
- char *csr;
char *iomem; /**< mapped IO memory */
+ struct rte_mem_resource *resource; /**< IOMEM resource window */
};
-#define BUSDEV_SZ 13
+#define NFP_PCI_BAR_MAX (PCI_64BIT_BAR_COUNT * 8)
+
struct nfp_pcie_user {
- struct nfp_bar bar[NFP_BAR_MAX];
+ struct rte_pci_device *pci_dev;
+ const struct nfp_dev_info *dev_info;
- int device;
int lock;
- char busdev[BUSDEV_SZ];
- int barsz;
- int dev_id;
- char *cfg;
+
+ /* PCI BAR management */
+ uint32_t bars;
+ struct nfp_bar bar[NFP_PCI_BAR_MAX];
+
+ /* Reserved BAR access */
+ char *csr;
};
/* Generic CPP bus access interface. */
@@ -206,19 +204,19 @@ nfp_bar_write(struct nfp_pcie_user *nfp,
struct nfp_bar *bar,
uint32_t newcfg)
{
- int base;
- int slot;
-
- base = bar->index >> 3;
- slot = bar->index & 7;
+ uint32_t xbar;
- if (nfp->cfg == NULL)
- return (-ENOMEM);
+ xbar = NFP_PCIE_P2C_EXPBAR_OFFSET(bar->index);
- bar->csr = nfp->cfg +
- NFP_PCIE_CFG_BAR_PCIETOCPPEXPBAR(nfp->dev_id, base, slot);
-
- *(uint32_t *)(bar->csr) = newcfg;
+ if (nfp->csr != NULL) {
+ rte_write32(newcfg, nfp->csr + xbar);
+ /* Readback to ensure BAR is flushed */
+ rte_read32(nfp->csr + xbar);
+ } else {
+ xbar += nfp->dev_info->pcie_cfg_expbar_offset;
+ rte_pci_write_config(nfp->pci_dev, &newcfg, sizeof(uint32_t),
+ xbar);
+ }
bar->barcfg = newcfg;
@@ -249,105 +247,323 @@ nfp_reconfigure_bar(struct nfp_pcie_user *nfp,
return nfp_bar_write(nfp, bar, newcfg);
}
-/*
- * Map all PCI bars. We assume that the BAR with the PCIe config block is
- * already mapped.
+static uint32_t
+nfp_bitsize_calc(uint64_t mask)
+{
+ uint64_t tmp = mask;
+ uint32_t bit_size = 0;
+
+ if (tmp == 0)
+ return 0;
+
+ for (; tmp != 0; tmp >>= 1)
+ bit_size++;
+
+ return bit_size;
+}
+
+static int
+nfp_cmp_bars(const void *ptr_a,
+ const void *ptr_b)
+{
+ const struct nfp_bar *a = ptr_a;
+ const struct nfp_bar *b = ptr_b;
+
+ if (a->bitsize == b->bitsize)
+ return a->index - b->index;
+ else
+ return a->bitsize - b->bitsize;
+}
+
+static bool
+nfp_bars_for_secondary(uint32_t index)
+{
+ uint8_t tmp = index & 0x07;
+
+ if (tmp == 0x06 || tmp == 0x07)
+ return true;
+ else
+ return false;
+}
+
+/**
+ * Map all PCI bars and fetch the actual BAR configurations from the board.
+ * We assume that the BAR with the PCIe config block is already mapped.
*
* BAR0.0: Reserved for General Mapping (for MSI-X access to PCIe SRAM)
+ * BAR0.1: --
+ * BAR0.2: --
+ * BAR0.3: --
+ * BAR0.4: --
+ * BAR0.5: --
+ * BAR0.6: --
+ * BAR0.7: --
*
- * Halving PCItoCPPBars for primary and secondary processes.
- * For CoreNIC firmware:
- * NFP PMD just requires two fixed slots, one for configuration BAR,
- * and another for accessing the hw queues. Another slot is needed
- * for setting the link up or down. Secondary processes do not need
- * to map the first two slots again, but it requires one slot for
- * accessing the link, even if it is not likely the secondary process
- * starting the port.
- * For Flower firmware:
- * NFP PMD need another fixed slots, used as the configureation BAR
- * for ctrl vNIC.
+ * BAR1.0-BAR1.7: --
+ * BAR2.0-BAR2.7: --
*/
static int
nfp_enable_bars(struct nfp_pcie_user *nfp)
{
- int x;
- int end;
- int start;
+ int pf;
+ uint32_t i;
+ uint8_t min_bars;
struct nfp_bar *bar;
+ enum rte_proc_type_t type;
+ struct rte_mem_resource *res;
+ const uint32_t barcfg_msix_general = NFP_PCIE_BAR_PCIE2CPP_MAPTYPE
+ (NFP_PCIE_BAR_PCIE2CPP_MAPTYPE_GENERAL) |
+ NFP_PCIE_BAR_PCIE2CPP_LENGTHSELECT_32BIT;
+
+ type = rte_eal_process_type();
+ if (type == RTE_PROC_PRIMARY)
+ min_bars = 12;
+ else
+ min_bars = 4;
+
+ for (i = 0; i < RTE_DIM(nfp->bar); i++) {
+ if (i != 0) {
+ if (type == RTE_PROC_PRIMARY) {
+ if (nfp_bars_for_secondary(i))
+ continue;
+ } else {
+ if (!nfp_bars_for_secondary(i))
+ continue;
+ }
+ }
- if (rte_eal_process_type() == RTE_PROC_PRIMARY) {
- start = NFP_BAR_MID;
- end = NFP_BAR_MIN;
- } else {
- start = NFP_BAR_MAX;
- end = NFP_BAR_MID;
+ /* 24 NFP bars mapping into BAR0, BAR2 and BAR4 */
+ res = &nfp->pci_dev->mem_resource[(i >> 3) * 2];
+
+ /* Skip over BARs that are not mapped */
+ if (res->addr != NULL) {
+ bar = &nfp->bar[i];
+ bar->resource = res;
+ bar->barcfg = 0;
+
+ bar->nfp = nfp;
+ bar->index = i;
+ /* The resource shared by 8 bars */
+ bar->mask = (res->len >> 3) - 1;
+ bar->bitsize = nfp_bitsize_calc(bar->mask);
+ bar->base = 0;
+ bar->lock = false;
+ bar->iomem = (char *)res->addr +
+ ((bar->index & 7) << bar->bitsize);
+
+ nfp->bars++;
+ }
+ }
+
+ if (nfp->bars < min_bars) {
+ PMD_DRV_LOG(ERR, "Not enough usable BARs found.");
+ return -EINVAL;
}
- for (x = start; x > end; x--) {
- bar = &nfp->bar[x - 1];
- bar->barcfg = 0;
- bar->nfp = nfp;
- bar->index = x;
- bar->mask = (1 << (nfp->barsz - 3)) - 1;
- bar->bitsize = nfp->barsz - 3;
- bar->base = 0;
- bar->iomem = NULL;
- bar->lock = 0;
- bar->csr = nfp->cfg + NFP_PCIE_CFG_BAR_PCIETOCPPEXPBAR(nfp->dev_id,
- bar->index >> 3, bar->index & 7);
- bar->iomem = nfp->cfg + (bar->index << bar->bitsize);
+ switch (nfp->pci_dev->id.device_id) {
+ case PCI_DEVICE_ID_NFP3800_PF_NIC:
+ pf = nfp->pci_dev->addr.function & 0x07;
+ nfp->csr = nfp->bar[0].iomem + NFP_PCIE_BAR(pf);
+ break;
+ case PCI_DEVICE_ID_NFP4000_PF_NIC:
+ case PCI_DEVICE_ID_NFP6000_PF_NIC:
+ nfp->csr = nfp->bar[0].iomem + NFP_PCIE_BAR(0);
+ break;
+ default:
+ PMD_DRV_LOG(ERR, "Unsupported device ID: %04hx!",
+ nfp->pci_dev->id.device_id);
+ return -EINVAL;
}
+
+ /* Configure, and lock, BAR0.0 for General Target use (MSI-X SRAM) */
+ bar = &nfp->bar[0];
+ bar->lock = true;
+
+ nfp_bar_write(nfp, bar, barcfg_msix_general);
+
+ /* Sort bars by bit size - use the smallest possible first. */
+ qsort(&nfp->bar[0], nfp->bars, sizeof(nfp->bar[0]), nfp_cmp_bars);
+
return 0;
}
-static struct nfp_bar *
-nfp_alloc_bar(struct nfp_pcie_user *nfp)
+/* Check if BAR can be used with the given parameters. */
+static bool
+matching_bar_exist(struct nfp_bar *bar,
+ int target,
+ int action,
+ int token,
+ uint64_t offset,
+ size_t size,
+ int width)
{
- int x;
- int end;
- int start;
- struct nfp_bar *bar;
+ int bar_width;
+ int bar_token;
+ int bar_target;
+ int bar_action;
+ uint32_t map_type;
+
+ bar_width = NFP_PCIE_BAR_PCIE2CPP_LENGTHSELECT_OF(bar->barcfg);
+ switch (bar_width) {
+ case NFP_PCIE_BAR_PCIE2CPP_LENGTHSELECT_32BIT:
+ bar_width = 4;
+ break;
+ case NFP_PCIE_BAR_PCIE2CPP_LENGTHSELECT_64BIT:
+ bar_width = 8;
+ break;
+ case NFP_PCIE_BAR_PCIE2CPP_LENGTHSELECT_0BYTE:
+ bar_width = 0;
+ break;
+ default:
+ bar_width = -1;
+ break;
+ }
- if (rte_eal_process_type() == RTE_PROC_PRIMARY) {
- start = NFP_BAR_MID;
- end = NFP_BAR_MIN;
- } else {
- start = NFP_BAR_MAX;
- end = NFP_BAR_MID;
+ /* Make sure to match up the width */
+ if (bar_width != width)
+ return false;
+
+ bar_token = NFP_PCIE_BAR_PCIE2CPP_TOKEN_BASEADDRESS_OF(bar->barcfg);
+ bar_action = NFP_PCIE_BAR_PCIE2CPP_ACTION_BASEADDRESS_OF(bar->barcfg);
+ map_type = NFP_PCIE_BAR_PCIE2CPP_MAPTYPE_OF(bar->barcfg);
+ switch (map_type) {
+ case NFP_PCIE_BAR_PCIE2CPP_MAPTYPE_TARGET:
+ bar_token = -1;
+ /* FALLTHROUGH */
+ case NFP_PCIE_BAR_PCIE2CPP_MAPTYPE_BULK:
+ bar_action = NFP_CPP_ACTION_RW;
+ if (action == 0)
+ action = NFP_CPP_ACTION_RW;
+ /* FALLTHROUGH */
+ case NFP_PCIE_BAR_PCIE2CPP_MAPTYPE_FIXED:
+ break;
+ default:
+ /* We don't match explicit bars through the area interface */
+ return false;
}
- for (x = start; x > end; x--) {
- bar = &nfp->bar[x - 1];
- if (bar->lock == 0) {
- bar->lock = 1;
- return bar;
- }
+ bar_target = NFP_PCIE_BAR_PCIE2CPP_TARGET_BASEADDRESS_OF(bar->barcfg);
+ if ((bar_target < 0 || bar_target == target) &&
+ (bar_token < 0 || bar_token == token) &&
+ bar_action == action &&
+ bar->base <= offset &&
+ (bar->base + (1 << bar->bitsize)) >= (offset + size))
+ return true;
+
+ /* No match */
+ return false;
+}
+
+static int
+find_matching_bar(struct nfp_pcie_user *nfp,
+ int target,
+ int action,
+ int token,
+ uint64_t offset,
+ size_t size,
+ int width)
+{
+ uint32_t n;
+
+ for (n = 0; n < nfp->bars; n++) {
+ struct nfp_bar *bar = &nfp->bar[n];
+
+ if (bar->lock)
+ continue;
+
+ if (matching_bar_exist(bar, target, action, token,
+ offset, size, width))
+ return n;
+ }
+
+ return -1;
+}
+
+/* Return EAGAIN if no resource is available */
+static int
+find_unused_bar_noblock(struct nfp_pcie_user *nfp,
+ int target,
+ int action,
+ int token,
+ uint64_t offset,
+ size_t size,
+ int width)
+{
+ int ret;
+ uint32_t n;
+ const struct nfp_bar *bar;
+
+ for (n = 0; n < nfp->bars; n++) {
+ bar = &nfp->bar[n];
+
+ if (bar->bitsize == 0)
+ continue;
+
+ /* Just check to see if we can make it fit... */
+ ret = nfp_compute_bar(bar, NULL, NULL, target, action,
+ token, offset, size, width);
+ if (ret != 0)
+ continue;
+
+ if (!bar->lock)
+ return n;
+ }
+
+ return -EAGAIN;
+}
+
+static int
+nfp_alloc_bar(struct nfp_pcie_user *nfp,
+ struct nfp6000_area_priv *priv)
+{
+ int ret;
+ int bar_num;
+ size_t size = priv->size;
+ int token = priv->token;
+ int target = priv->target;
+ int action = priv->action;
+ int width = priv->width.bar;
+ uint64_t offset = priv->offset;
+
+ /* Bar size should small than 16MB */
+ if (size > (1 << 24))
+ return -EINVAL;
+
+ bar_num = find_matching_bar(nfp, target, action, token,
+ offset, size, width);
+ if (bar_num >= 0) {
+ /* Found a perfect match. */
+ nfp->bar[bar_num].lock = true;
+ return bar_num;
}
- return NULL;
+ bar_num = find_unused_bar_noblock(nfp, target, action, token,
+ offset, size, width);
+ if (bar_num < 0)
+ return bar_num;
+
+ nfp->bar[bar_num].lock = true;
+ ret = nfp_reconfigure_bar(nfp, &nfp->bar[bar_num],
+ target, action, token, offset, size, width);
+ if (ret < 0) {
+ nfp->bar[bar_num].lock = false;
+ return ret;
+ }
+
+ return bar_num;
}
static void
nfp_disable_bars(struct nfp_pcie_user *nfp)
{
- int x;
- int end;
- int start;
+ uint32_t i;
struct nfp_bar *bar;
- if (rte_eal_process_type() == RTE_PROC_PRIMARY) {
- start = NFP_BAR_MID;
- end = NFP_BAR_MIN;
- } else {
- start = NFP_BAR_MAX;
- end = NFP_BAR_MID;
- }
-
- for (x = start; x > end; x--) {
- bar = &nfp->bar[x - 1];
- if (bar->iomem) {
+ for (i = 0; i < nfp->bars; i++) {
+ bar = &nfp->bar[i];
+ if (bar->iomem != NULL) {
bar->iomem = NULL;
- bar->lock = 0;
+ bar->lock = false;
}
}
}
@@ -364,7 +580,6 @@ nfp6000_area_init(struct nfp_cpp_area *area,
uint32_t target = NFP_CPP_ID_TARGET_of(dest);
uint32_t action = NFP_CPP_ID_ACTION_of(dest);
struct nfp6000_area_priv *priv = nfp_cpp_area_priv(area);
- struct nfp_pcie_user *nfp = nfp_cpp_priv(nfp_cpp_area_cpp(area));
pp = nfp_target_pushpull(NFP_CPP_ID(target, action, token), address);
if (pp < 0)
@@ -383,9 +598,7 @@ nfp6000_area_init(struct nfp_cpp_area *area,
else
priv->width.bar = priv->width.write;
- priv->bar = nfp_alloc_bar(nfp);
- if (priv->bar == NULL)
- return -ENOMEM;
+ priv->bar = NULL;
priv->target = target;
priv->action = action;
@@ -393,17 +606,29 @@ nfp6000_area_init(struct nfp_cpp_area *area,
priv->offset = address;
priv->size = size;
- ret = nfp_reconfigure_bar(nfp, priv->bar, priv->target, priv->action,
- priv->token, priv->offset, priv->size,
- priv->width.bar);
-
return ret;
}
static int
nfp6000_area_acquire(struct nfp_cpp_area *area)
{
+ int bar_num;
struct nfp6000_area_priv *priv = nfp_cpp_area_priv(area);
+ struct nfp_pcie_user *nfp = nfp_cpp_priv(nfp_cpp_area_cpp(area));
+
+ /* Already allocated. */
+ if (priv->bar != NULL)
+ return 0;
+
+ bar_num = nfp_alloc_bar(nfp, priv);
+ if (bar_num < 0) {
+ PMD_DRV_LOG(ERR, "Failed to allocate bar %d:%d:%d:%#lx: %d",
+ priv->target, priv->action, priv->token,
+ priv->offset, bar_num);
+ return bar_num;
+ }
+
+ priv->bar = &nfp->bar[bar_num];
/* Calculate offset into BAR. */
if (nfp_bar_maptype(priv->bar) ==
@@ -432,7 +657,7 @@ nfp6000_area_release(struct nfp_cpp_area *area)
{
struct nfp6000_area_priv *priv = nfp_cpp_area_priv(area);
- priv->bar->lock = 0;
+ priv->bar->lock = false;
priv->bar = NULL;
priv->iomem = NULL;
}
@@ -603,7 +828,8 @@ nfp_acquire_process_lock(struct nfp_pcie_user *desc)
memset(&lock, 0, sizeof(lock));
- snprintf(lockname, sizeof(lockname), "/var/lock/nfp_%s", desc->busdev);
+ snprintf(lockname, sizeof(lockname), "/var/lock/nfp_%s",
+ desc->pci_dev->device.name);
desc->lock = open(lockname, O_RDWR | O_CREAT, 0666);
if (desc->lock < 0)
return desc->lock;
@@ -693,32 +919,11 @@ nfp6000_get_serial(struct rte_pci_device *dev,
}
static int
-nfp6000_set_barsz(struct rte_pci_device *dev,
- struct nfp_pcie_user *desc)
-{
- int i = 0;
- uint64_t tmp;
-
- tmp = dev->mem_resource[0].len;
-
- while (tmp >>= 1)
- i++;
-
- desc->barsz = i;
-
- return 0;
-}
-
-static int
-nfp6000_init(struct nfp_cpp *cpp,
- struct rte_pci_device *dev)
+nfp6000_init(struct nfp_cpp *cpp)
{
int ret = 0;
struct nfp_pcie_user *desc = nfp_cpp_priv(cpp);
- memset(desc->busdev, 0, BUSDEV_SZ);
- strlcpy(desc->busdev, dev->device.name, sizeof(desc->busdev));
-
if (rte_eal_process_type() == RTE_PROC_PRIMARY &&
nfp_cpp_driver_need_lock(cpp)) {
ret = nfp_acquire_process_lock(desc);
@@ -726,12 +931,6 @@ nfp6000_init(struct nfp_cpp *cpp,
return -1;
}
- if (nfp6000_set_barsz(dev, desc) < 0)
- return -1;
-
- desc->cfg = dev->mem_resource[0].addr;
- desc->dev_id = dev->addr.function & 0x7;
-
ret = nfp_enable_bars(desc);
if (ret != 0) {
PMD_DRV_LOG(ERR, "Enable bars failed");
@@ -749,7 +948,6 @@ nfp6000_free(struct nfp_cpp *cpp)
nfp_disable_bars(desc);
if (nfp_cpp_driver_need_lock(cpp))
close(desc->lock);
- close(desc->device);
rte_free(desc);
}
@@ -789,6 +987,7 @@ nfp_cpp_operations *nfp_cpp_transport_operations(void)
*/
struct nfp_cpp *
nfp_cpp_from_nfp6000_pcie(struct rte_pci_device *pci_dev,
+ const struct nfp_dev_info *dev_info,
bool driver_lock_needed)
{
int ret;
@@ -800,6 +999,9 @@ nfp_cpp_from_nfp6000_pcie(struct rte_pci_device *pci_dev,
if (nfp == NULL)
return NULL;
+ nfp->pci_dev = pci_dev;
+ nfp->dev_info = dev_info;
+
ret = nfp6000_get_interface(pci_dev, &interface);
if (ret != 0) {
PMD_DRV_LOG(ERR, "Get interface failed.");
@@ -14,6 +14,7 @@
const struct nfp_cpp_operations *nfp_cpp_transport_operations(void);
struct nfp_cpp *nfp_cpp_from_nfp6000_pcie(struct rte_pci_device *pci_dev,
+ const struct nfp_dev_info *dev_info,
bool driver_lock_needed);
#endif /* __NFP6000_PCIE_H__ */
@@ -18,6 +18,8 @@ struct nfp_cpp_area;
#define NFP_CPP_NUM_TARGETS 16
+#define PCI_64BIT_BAR_COUNT 3
+
/*
* NFP CPP operations structure
*/
@@ -26,8 +28,7 @@ struct nfp_cpp_operations {
size_t area_priv_size;
/* Instance an NFP CPP */
- int (*init)(struct nfp_cpp *cpp,
- struct rte_pci_device *dev);
+ int (*init)(struct nfp_cpp *cpp);
/*
* Free the bus.
@@ -947,7 +947,7 @@ nfp_cpp_alloc(struct rte_pci_device *pci_dev,
* NOTE: cpp_lock is NOT locked for op->init,
* since it may call NFP CPP API operations
*/
- err = cpp->op->init(cpp, pci_dev);
+ err = cpp->op->init(cpp);
if (err < 0) {
PMD_DRV_LOG(ERR, "NFP interface initialization failed");
rte_free(cpp);