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Date: Wed, 3 Jul 2019 19:12:50 -0700
From: Jeff Kirsher <jeffrey.t.kirsher@...el.com>
To: davem@...emloft.net, dledford@...hat.com, jgg@...lanox.com
Cc: Tony Nguyen <anthony.l.nguyen@...el.com>, netdev@...r.kernel.org,
linux-rdma@...r.kernel.org, nhorman@...hat.com,
sassmann@...hat.com, poswald@...e.com, mustafa.ismail@...el.com,
shiraz.saleem@...el.com, Dave Ertman <david.m.ertman@...el.com>,
Andrew Bowers <andrewx.bowers@...el.com>,
Jeff Kirsher <jeffrey.t.kirsher@...el.com>
Subject: [net-next 1/3] ice: Initialize and register platform device to provide RDMA
From: Tony Nguyen <anthony.l.nguyen@...el.com>
The RDMA block does not advertise on the PCI bus or any other bus.
Thus the ice driver needs to provide access to the RDMA hardware block
via a virtual bus; utilize the platform bus to provide this access.
This patch initializes the driver to support RDMA as well as creates
and registers a platform device for the RDMA driver to register to. At
this point the driver is fully initialized to register a platform
driver, however, can not yet register as the ops have not been
implemented.
We refer to the interaction of this platform device as Inter-Driver
Communication (IDC); where the platform device is referred to as the peer
device and the platform driver is referred to as the peer driver.
Signed-off-by: Dave Ertman <david.m.ertman@...el.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@...el.com>
Tested-by: Andrew Bowers <andrewx.bowers@...el.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@...el.com>
---
drivers/net/ethernet/intel/ice/Makefile | 1 +
drivers/net/ethernet/intel/ice/ice.h | 13 +
.../net/ethernet/intel/ice/ice_adminq_cmd.h | 1 +
drivers/net/ethernet/intel/ice/ice_common.c | 5 +
drivers/net/ethernet/intel/ice/ice_dcb_lib.c | 31 ++
drivers/net/ethernet/intel/ice/ice_dcb_lib.h | 2 +
.../net/ethernet/intel/ice/ice_hw_autogen.h | 1 +
drivers/net/ethernet/intel/ice/ice_idc.c | 427 ++++++++++++++++++
drivers/net/ethernet/intel/ice/ice_idc.h | 360 +++++++++++++++
drivers/net/ethernet/intel/ice/ice_idc_int.h | 67 +++
drivers/net/ethernet/intel/ice/ice_main.c | 42 ++
drivers/net/ethernet/intel/ice/ice_type.h | 1 +
12 files changed, 951 insertions(+)
create mode 100644 drivers/net/ethernet/intel/ice/ice_idc.c
create mode 100644 drivers/net/ethernet/intel/ice/ice_idc.h
create mode 100644 drivers/net/ethernet/intel/ice/ice_idc_int.h
diff --git a/drivers/net/ethernet/intel/ice/Makefile b/drivers/net/ethernet/intel/ice/Makefile
index 2d140ba83781..1500f7724b6f 100644
--- a/drivers/net/ethernet/intel/ice/Makefile
+++ b/drivers/net/ethernet/intel/ice/Makefile
@@ -15,6 +15,7 @@ ice-y := ice_main.o \
ice_sched.o \
ice_lib.o \
ice_txrx.o \
+ ice_idc.o \
ice_ethtool.o
ice-$(CONFIG_PCI_IOV) += ice_virtchnl_pf.o ice_sriov.o
ice-$(CONFIG_DCB) += ice_dcb.o ice_dcb_lib.o
diff --git a/drivers/net/ethernet/intel/ice/ice.h b/drivers/net/ethernet/intel/ice/ice.h
index 9ee6b55553c0..6ee2774699f0 100644
--- a/drivers/net/ethernet/intel/ice/ice.h
+++ b/drivers/net/ethernet/intel/ice/ice.h
@@ -38,6 +38,7 @@
#include "ice_switch.h"
#include "ice_common.h"
#include "ice_sched.h"
+#include "ice_idc_int.h"
#include "ice_virtchnl_pf.h"
#include "ice_sriov.h"
@@ -84,6 +85,7 @@ extern const char ice_drv_ver[];
#define ICE_MAX_SMALL_RSS_QS 8
#define ICE_RES_VALID_BIT 0x8000
#define ICE_RES_MISC_VEC_ID (ICE_RES_VALID_BIT - 1)
+#define ICE_RES_RDMA_VEC_ID (ICE_RES_MISC_VEC_ID - 1)
#define ICE_INVAL_Q_INDEX 0xffff
#define ICE_INVAL_VFID 256
#define ICE_MAX_VF_COUNT 256
@@ -331,6 +333,7 @@ struct ice_q_vector {
enum ice_pf_flags {
ICE_FLAG_MSIX_ENA,
ICE_FLAG_FLTR_SYNC,
+ ICE_FLAG_IWARP_ENA,
ICE_FLAG_RSS_ENA,
ICE_FLAG_SRIOV_ENA,
ICE_FLAG_SRIOV_CAPABLE,
@@ -373,6 +376,9 @@ struct ice_pf {
struct mutex avail_q_mutex; /* protects access to avail_[rx|tx]qs */
struct mutex sw_mutex; /* lock for protecting VSI alloc flow */
u32 msg_enable;
+ /* Total number of MSIX vectors reserved for base driver */
+ u32 num_rdma_msix;
+ u32 rdma_base_vector;
u32 hw_csum_rx_error;
u32 oicr_idx; /* Other interrupt cause MSIX vector index */
u32 num_avail_sw_msix; /* remaining MSIX SW vectors left unclaimed */
@@ -399,6 +405,7 @@ struct ice_pf {
unsigned long tx_timeout_last_recovery;
u32 tx_timeout_recovery_level;
char int_name[ICE_INT_NAME_STR_LEN];
+ struct ice_peer_dev_int **peers;
u32 sw_int_count;
};
@@ -406,6 +413,8 @@ struct ice_netdev_priv {
struct ice_vsi *vsi;
};
+extern struct ida ice_peer_index_ida;
+
/**
* ice_irq_dynamic_ena - Enable default interrupt generation settings
* @hw: pointer to HW struct
@@ -463,6 +472,10 @@ int ice_set_rss(struct ice_vsi *vsi, u8 *seed, u8 *lut, u16 lut_size);
int ice_get_rss(struct ice_vsi *vsi, u8 *seed, u8 *lut, u16 lut_size);
void ice_fill_rss_lut(u8 *lut, u16 rss_table_size, u16 rss_size);
void ice_print_link_msg(struct ice_vsi *vsi, bool isup);
+int ice_init_peer_devices(struct ice_pf *pf);
+int
+ice_for_each_peer(struct ice_pf *pf, void *data,
+ int (*fn)(struct ice_peer_dev_int *, void *));
#ifdef CONFIG_DCB
int ice_pf_ena_all_vsi(struct ice_pf *pf, bool locked);
void ice_pf_dis_all_vsi(struct ice_pf *pf, bool locked);
diff --git a/drivers/net/ethernet/intel/ice/ice_adminq_cmd.h b/drivers/net/ethernet/intel/ice/ice_adminq_cmd.h
index 765e3c2ed045..1e1bd5f0c2a2 100644
--- a/drivers/net/ethernet/intel/ice/ice_adminq_cmd.h
+++ b/drivers/net/ethernet/intel/ice/ice_adminq_cmd.h
@@ -96,6 +96,7 @@ struct ice_aqc_list_caps_elem {
#define ICE_AQC_CAPS_TXQS 0x0042
#define ICE_AQC_CAPS_MSIX 0x0043
#define ICE_AQC_CAPS_MAX_MTU 0x0047
+#define ICE_AQC_CAPS_IWARP 0x0051
u8 major_ver;
u8 minor_ver;
diff --git a/drivers/net/ethernet/intel/ice/ice_common.c b/drivers/net/ethernet/intel/ice/ice_common.c
index 2e0731c1e1a3..2788b2ede440 100644
--- a/drivers/net/ethernet/intel/ice/ice_common.c
+++ b/drivers/net/ethernet/intel/ice/ice_common.c
@@ -1613,6 +1613,11 @@ ice_parse_caps(struct ice_hw *hw, void *buf, u32 cap_count,
"%s: MSIX first vector index = %d\n", prefix,
caps->msix_vector_first_id);
break;
+ case ICE_AQC_CAPS_IWARP:
+ caps->iwarp = (number == 1);
+ ice_debug(hw, ICE_DBG_INIT,
+ "%s: iWARP = %d\n", prefix, caps->iwarp);
+ break;
case ICE_AQC_CAPS_MAX_MTU:
caps->max_mtu = number;
ice_debug(hw, ICE_DBG_INIT, "%s: max MTU = %d\n",
diff --git a/drivers/net/ethernet/intel/ice/ice_dcb_lib.c b/drivers/net/ethernet/intel/ice/ice_dcb_lib.c
index fe88b127ca42..c6466e16eef1 100644
--- a/drivers/net/ethernet/intel/ice/ice_dcb_lib.c
+++ b/drivers/net/ethernet/intel/ice/ice_dcb_lib.c
@@ -501,6 +501,37 @@ ice_tx_prepare_vlan_flags_dcb(struct ice_ring *tx_ring,
return 0;
}
+/**
+ * ice_setup_dcb_qos_info - Setup DCB QoS information
+ * @pf: ptr to ice_pf
+ * @qos_info: QoS param instance
+ */
+void ice_setup_dcb_qos_info(struct ice_pf *pf, struct ice_qos_params *qos_info)
+{
+ struct ice_dcbx_cfg *dcbx_cfg;
+ u32 up2tc;
+ int i;
+
+ dcbx_cfg = &pf->hw.port_info->local_dcbx_cfg;
+ up2tc = rd32(&pf->hw, PRTDCB_TUP2TC);
+ qos_info->num_apps = dcbx_cfg->numapps;
+
+ qos_info->num_tc = ice_dcb_get_num_tc(dcbx_cfg);
+
+ for (i = 0; i < ICE_IDC_MAX_USER_PRIORITY; i++)
+ qos_info->up2tc[i] = (up2tc >> (i * 3)) & 0x7;
+
+ for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++)
+ qos_info->tc_info[i].rel_bw =
+ dcbx_cfg->etscfg.tcbwtable[i];
+
+ for (i = 0; i < qos_info->num_apps; i++) {
+ qos_info->apps[i].priority = dcbx_cfg->app[i].priority;
+ qos_info->apps[i].prot_id = dcbx_cfg->app[i].prot_id;
+ qos_info->apps[i].selector = dcbx_cfg->app[i].selector;
+ }
+}
+
/**
* ice_dcb_need_recfg - Check if DCB needs reconfig
* @pf: board private structure
diff --git a/drivers/net/ethernet/intel/ice/ice_dcb_lib.h b/drivers/net/ethernet/intel/ice/ice_dcb_lib.h
index 819081053ff5..bce3899afb3a 100644
--- a/drivers/net/ethernet/intel/ice/ice_dcb_lib.h
+++ b/drivers/net/ethernet/intel/ice/ice_dcb_lib.h
@@ -19,6 +19,7 @@ void ice_update_dcb_stats(struct ice_pf *pf);
int
ice_tx_prepare_vlan_flags_dcb(struct ice_ring *tx_ring,
struct ice_tx_buf *first);
+void ice_setup_dcb_qos_info(struct ice_pf *pf, struct ice_qos_params *qos_info);
void
ice_dcb_process_lldp_set_mib_change(struct ice_pf *pf,
struct ice_rq_event_info *event);
@@ -56,6 +57,7 @@ ice_tx_prepare_vlan_flags_dcb(struct ice_ring __always_unused *tx_ring,
#define ice_update_dcb_stats(pf) do {} while (0)
#define ice_vsi_cfg_dcb_rings(vsi) do {} while (0)
+#define ice_setup_dcb_qos_info(pf, qos_info) do {} while (0)
#define ice_dcb_process_lldp_set_mib_change(pf, event) do {} while (0)
#define ice_set_cgd_num(tlan_ctx, ring) do {} while (0)
#endif /* CONFIG_DCB */
diff --git a/drivers/net/ethernet/intel/ice/ice_hw_autogen.h b/drivers/net/ethernet/intel/ice/ice_hw_autogen.h
index 6c5ce05742b1..0fa393f909dd 100644
--- a/drivers/net/ethernet/intel/ice/ice_hw_autogen.h
+++ b/drivers/net/ethernet/intel/ice/ice_hw_autogen.h
@@ -55,6 +55,7 @@
#define PRTDCB_GENS 0x00083020
#define PRTDCB_GENS_DCBX_STATUS_S 0
#define PRTDCB_GENS_DCBX_STATUS_M ICE_M(0x7, 0)
+#define PRTDCB_TUP2TC 0x001D26C0
#define GLFLXP_RXDID_FLAGS(_i, _j) (0x0045D000 + ((_i) * 4 + (_j) * 256))
#define GLFLXP_RXDID_FLAGS_FLEXIFLAG_4N_S 0
#define GLFLXP_RXDID_FLAGS_FLEXIFLAG_4N_M ICE_M(0x3F, 0)
diff --git a/drivers/net/ethernet/intel/ice/ice_idc.c b/drivers/net/ethernet/intel/ice/ice_idc.c
new file mode 100644
index 000000000000..0bf66e9fa159
--- /dev/null
+++ b/drivers/net/ethernet/intel/ice/ice_idc.c
@@ -0,0 +1,427 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright (c) 2019, Intel Corporation. */
+
+/* Inter-Driver Communication */
+#include "ice.h"
+#include "ice_lib.h"
+#include "ice_dcb_lib.h"
+
+DEFINE_IDA(ice_peer_index_ida);
+
+static const struct peer_dev_id peer_dev_ids[] = ASSIGN_PEER_INFO;
+
+/**
+ * ice_peer_state_change - manage state machine for peer
+ * @peer_dev: pointer to peer's configuration
+ * @new_state: the state requested to transition into
+ * @locked: boolean to determine if call made with mutex held
+ *
+ * This function handles all state transitions for peer devices.
+ * The state machine is as follows:
+ *
+ * +<-----------------------+<-----------------------------+
+ * |<-------+<----------+ +
+ * \/ + + +
+ * INIT --------------> PROBED --> OPENING CLOSED --> REMOVED
+ * + +
+ * OPENED --> CLOSING
+ * + +
+ * PREP_RST +
+ * + +
+ * PREPPED +
+ * +---------->+
+ */
+static void
+ice_peer_state_change(struct ice_peer_dev_int *peer_dev, long new_state,
+ bool locked)
+{
+ if (!locked)
+ mutex_lock(&peer_dev->peer_dev_state_mutex);
+
+ switch (new_state) {
+ case ICE_PEER_DEV_STATE_INIT:
+ if (test_and_clear_bit(ICE_PEER_DEV_STATE_REMOVED,
+ peer_dev->state)) {
+ set_bit(ICE_PEER_DEV_STATE_INIT, peer_dev->state);
+ dev_info(&peer_dev->peer_dev.platform_dev.dev,
+ "state transition from _REMOVED to _INIT\n");
+ } else {
+ set_bit(ICE_PEER_DEV_STATE_INIT, peer_dev->state);
+ dev_info(&peer_dev->peer_dev.platform_dev.dev,
+ "state set to _INIT\n");
+ }
+ break;
+ case ICE_PEER_DEV_STATE_PROBED:
+ if (test_and_clear_bit(ICE_PEER_DEV_STATE_INIT,
+ peer_dev->state)) {
+ set_bit(ICE_PEER_DEV_STATE_PROBED, peer_dev->state);
+ dev_info(&peer_dev->peer_dev.platform_dev.dev,
+ "state transition from _INIT to _PROBED\n");
+ } else if (test_and_clear_bit(ICE_PEER_DEV_STATE_REMOVED,
+ peer_dev->state)) {
+ set_bit(ICE_PEER_DEV_STATE_PROBED, peer_dev->state);
+ dev_info(&peer_dev->peer_dev.platform_dev.dev,
+ "state transition from _REMOVED to _PROBED\n");
+ } else if (test_and_clear_bit(ICE_PEER_DEV_STATE_OPENING,
+ peer_dev->state)) {
+ set_bit(ICE_PEER_DEV_STATE_PROBED, peer_dev->state);
+ dev_info(&peer_dev->peer_dev.platform_dev.dev,
+ "state transition from _OPENING to _PROBED\n");
+ }
+ break;
+ case ICE_PEER_DEV_STATE_OPENING:
+ if (test_and_clear_bit(ICE_PEER_DEV_STATE_PROBED,
+ peer_dev->state)) {
+ set_bit(ICE_PEER_DEV_STATE_OPENING, peer_dev->state);
+ dev_info(&peer_dev->peer_dev.platform_dev.dev,
+ "state transition from _PROBED to _OPENING\n");
+ } else if (test_and_clear_bit(ICE_PEER_DEV_STATE_CLOSED,
+ peer_dev->state)) {
+ set_bit(ICE_PEER_DEV_STATE_OPENING, peer_dev->state);
+ dev_info(&peer_dev->peer_dev.platform_dev.dev,
+ "state transition from _CLOSED to _OPENING\n");
+ }
+ break;
+ case ICE_PEER_DEV_STATE_OPENED:
+ if (test_and_clear_bit(ICE_PEER_DEV_STATE_OPENING,
+ peer_dev->state)) {
+ set_bit(ICE_PEER_DEV_STATE_OPENED, peer_dev->state);
+ dev_info(&peer_dev->peer_dev.platform_dev.dev,
+ "state transition from _OPENING to _OPENED\n");
+ }
+ break;
+ case ICE_PEER_DEV_STATE_PREP_RST:
+ if (test_and_clear_bit(ICE_PEER_DEV_STATE_OPENED,
+ peer_dev->state)) {
+ set_bit(ICE_PEER_DEV_STATE_PREP_RST, peer_dev->state);
+ dev_info(&peer_dev->peer_dev.platform_dev.dev,
+ "state transition from _OPENED to _PREP_RST\n");
+ }
+ break;
+ case ICE_PEER_DEV_STATE_PREPPED:
+ if (test_and_clear_bit(ICE_PEER_DEV_STATE_PREP_RST,
+ peer_dev->state)) {
+ set_bit(ICE_PEER_DEV_STATE_PREPPED, peer_dev->state);
+ dev_info(&peer_dev->peer_dev.platform_dev.dev,
+ "state transition _PREP_RST to _PREPPED\n");
+ }
+ break;
+ case ICE_PEER_DEV_STATE_CLOSING:
+ if (test_and_clear_bit(ICE_PEER_DEV_STATE_OPENED,
+ peer_dev->state)) {
+ set_bit(ICE_PEER_DEV_STATE_CLOSING, peer_dev->state);
+ dev_info(&peer_dev->peer_dev.platform_dev.dev,
+ "state transition from _OPENED to _CLOSING\n");
+ }
+ if (test_and_clear_bit(ICE_PEER_DEV_STATE_PREPPED,
+ peer_dev->state)) {
+ set_bit(ICE_PEER_DEV_STATE_CLOSING, peer_dev->state);
+ dev_info(&peer_dev->peer_dev.platform_dev.dev,
+ "state transition _PREPPED to _CLOSING\n");
+ }
+ /* NOTE - up to peer to handle this situation correctly */
+ if (test_and_clear_bit(ICE_PEER_DEV_STATE_PREP_RST,
+ peer_dev->state)) {
+ set_bit(ICE_PEER_DEV_STATE_CLOSING, peer_dev->state);
+ dev_warn(&peer_dev->peer_dev.platform_dev.dev,
+ "WARN: Peer state PREP_RST to _CLOSING\n");
+ }
+ break;
+ case ICE_PEER_DEV_STATE_CLOSED:
+ if (test_and_clear_bit(ICE_PEER_DEV_STATE_CLOSING,
+ peer_dev->state)) {
+ set_bit(ICE_PEER_DEV_STATE_CLOSED, peer_dev->state);
+ dev_info(&peer_dev->peer_dev.platform_dev.dev,
+ "state transition from _CLOSING to _CLOSED\n");
+ }
+ break;
+ case ICE_PEER_DEV_STATE_REMOVED:
+ if (test_and_clear_bit(ICE_PEER_DEV_STATE_OPENED,
+ peer_dev->state) ||
+ test_and_clear_bit(ICE_PEER_DEV_STATE_CLOSED,
+ peer_dev->state)) {
+ set_bit(ICE_PEER_DEV_STATE_REMOVED, peer_dev->state);
+ dev_info(&peer_dev->peer_dev.platform_dev.dev,
+ "state from _OPENED/_CLOSED to _REMOVED\n");
+ /* Clear registration for events when peer removed */
+ bitmap_zero(peer_dev->events, ICE_PEER_DEV_STATE_NBITS);
+ }
+ break;
+ default:
+ break;
+ }
+
+ if (!locked)
+ mutex_unlock(&peer_dev->peer_dev_state_mutex);
+}
+
+/**
+ * ice_for_each_peer - iterate across and call function for each peer dev
+ * @pf: pointer to private board struct
+ * @data: data to pass to function on each call
+ * @fn: pointer to function to call for each peer
+ *
+ * This function is to be used similarly to ice_for_each_peer
+ */
+int
+ice_for_each_peer(struct ice_pf *pf, void *data,
+ int (*fn)(struct ice_peer_dev_int *, void *))
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(peer_dev_ids); i++) {
+ struct ice_peer_dev_int *peer_dev_int;
+ int ret;
+
+ peer_dev_int = pf->peers[i];
+ if (peer_dev_int) {
+ ret = fn(peer_dev_int, data);
+ if (ret)
+ return ret;
+ }
+ }
+
+ return 0;
+}
+
+/**
+ * ice_unreg_peer_device - unregister specified device
+ * @peer_dev_int: ptr to peer device internal
+ * @data: ptr to opaque data
+ *
+ * This function invokes device unregistration, removes ID associated with
+ * the specified device.
+ */
+int
+ice_unreg_peer_device(struct ice_peer_dev_int *peer_dev_int,
+ void __always_unused *data)
+{
+ struct ice_pf *pf;
+
+ if (!peer_dev_int)
+ return 0;
+
+ platform_device_unregister(&peer_dev_int->peer_dev.platform_dev);
+
+ pf = pci_get_drvdata(peer_dev_int->peer_dev.pdev);
+ if (!pf)
+ return 0;
+
+ if (peer_dev_int->ice_peer_wq) {
+ if (peer_dev_int->peer_prep_task.func)
+ cancel_work_sync(&peer_dev_int->peer_prep_task);
+
+ if (peer_dev_int->peer_close_task.func)
+ cancel_work_sync(&peer_dev_int->peer_close_task);
+ destroy_workqueue(peer_dev_int->ice_peer_wq);
+ }
+
+ /* Cleanup the allocated ID for this peer device */
+ ida_simple_remove(&ice_peer_index_ida, peer_dev_int->peer_dev.index);
+
+ devm_kfree(&pf->pdev->dev, peer_dev_int);
+
+ return 0;
+}
+
+/**
+ * ice_unroll_peer - destroy peers and peer_wq in case of error
+ * @peer_dev_int: ptr to peer device internal struct
+ * @data: ptr to opaque data
+ *
+ * This function releases resources in the event of a failure in creating
+ * peer devices or their individual work_queues. Meant to be called from
+ * a ice_for_each_peer invocation
+ */
+int
+ice_unroll_peer(struct ice_peer_dev_int *peer_dev_int,
+ void __always_unused *data)
+{
+ struct ice_pf *pf;
+
+ pf = pci_get_drvdata(peer_dev_int->peer_dev.pdev);
+
+ if (peer_dev_int->ice_peer_wq)
+ destroy_workqueue(peer_dev_int->ice_peer_wq);
+ devm_kfree(&pf->pdev->dev, peer_dev_int);
+
+ return 0;
+}
+
+/**
+ * ice_reserve_peer_qvector - Reserve vector resources for peer drivers
+ * @pf: board private structure to initialize
+ */
+static int ice_reserve_peer_qvector(struct ice_pf *pf)
+{
+ if (test_bit(ICE_FLAG_IWARP_ENA, pf->flags)) {
+ int index;
+
+ index = ice_get_res(pf, pf->irq_tracker, pf->num_rdma_msix,
+ ICE_RES_RDMA_VEC_ID);
+ if (index < 0)
+ return index;
+ pf->num_avail_sw_msix -= pf->num_rdma_msix;
+ pf->rdma_base_vector = index;
+ }
+ return 0;
+}
+
+/**
+ * ice_peer_device_release - release function for platform peer device
+ * @dev: pointer to device structure
+ *
+ * This callback function is accessed by platform bus infrastructure when
+ * all references on the peer platform device we registered are removed
+ * (e.g. the peer priver has been removed). We will use this opportunity
+ * to set the peer's state to init to be ready if the peer driver re-loads.
+ */
+static void ice_peer_device_release(struct device *dev)
+{
+ struct ice_peer_dev_int *peer_dev_int;
+ struct ice_peer_dev *peer_dev;
+
+ peer_dev = dev_to_ice_peer(dev);
+ peer_dev_int = container_of(peer_dev, struct ice_peer_dev_int,
+ peer_dev);
+
+ ice_peer_state_change(peer_dev_int, ICE_PEER_DEV_STATE_INIT, false);
+}
+
+/**
+ * ice_init_peer_devices - initializes peer devices
+ * @pf: ptr to ice_pf
+ *
+ * This function initializes peer devices and associates them with specified
+ * pci_dev as their parent.
+ */
+int ice_init_peer_devices(struct ice_pf *pf)
+{
+ struct pci_dev *pdev = pf->pdev;
+ struct msix_entry *entry = NULL;
+ struct ice_port_info *port_info;
+ struct ice_vsi *vsi;
+ int status = 0;
+ int i;
+
+ /* Reserve vector resources */
+ status = ice_reserve_peer_qvector(pf);
+ if (status < 0) {
+ dev_err(&pdev->dev,
+ "failed to reserve vectors for peer drivers\n");
+ return status;
+ }
+ for (i = 0; i < ARRAY_SIZE(peer_dev_ids); i++) {
+ struct ice_peer_dev_int *peer_dev_int;
+ struct platform_device *platform_dev;
+ struct ice_qos_params *qos_info;
+ struct ice_peer_dev *peer_dev;
+ int j;
+
+ /* don't create an RDMA platform_device if NIC does not
+ * support RDMA functionality
+ */
+ if (peer_dev_ids[i].id == ICE_PEER_RDMA_DEV &&
+ !test_bit(ICE_FLAG_IWARP_ENA, pf->flags)) {
+ dev_warn(&pf->pdev->dev,
+ "RDMA not possible with this device config\n");
+ continue;
+ }
+
+ peer_dev_int = devm_kzalloc(&pdev->dev, sizeof(*peer_dev_int),
+ GFP_KERNEL);
+ if (!peer_dev_int)
+ return -ENOMEM;
+ pf->peers[i] = peer_dev_int;
+
+ mutex_init(&peer_dev_int->peer_dev_state_mutex);
+
+ peer_dev = &peer_dev_int->peer_dev;
+ peer_dev->peer_ops = NULL;
+ peer_dev->hw_addr = (u8 __iomem *)pf->hw.hw_addr;
+ peer_dev->ver.major = ICE_PEER_MAJOR_VER;
+ peer_dev->ver.minor = ICE_PEER_MINOR_VER;
+ peer_dev->ver.support = ICE_IDC_FEATURES;
+ peer_dev->peer_dev_id = peer_dev_ids[i].id;
+ port_info = pf->hw.port_info;
+ vsi = pf->vsi[0];
+ peer_dev->pf_vsi_num = vsi->vsi_num;
+ peer_dev->netdev = vsi->netdev;
+ peer_dev->initial_mtu = vsi->netdev->mtu;
+ ether_addr_copy(peer_dev->lan_addr, port_info->mac.lan_addr);
+
+ platform_dev = &peer_dev->platform_dev;
+ platform_dev->name = peer_dev_ids[i].name;
+ platform_dev->id = PLATFORM_DEVID_AUTO;
+ platform_dev->id_auto = true;
+ platform_dev->dev.release = ice_peer_device_release;
+ platform_dev->dev.parent = &pdev->dev;
+ peer_dev_int->ice_peer_wq =
+ alloc_ordered_workqueue("ice_peer_wq_%d", WQ_UNBOUND,
+ i);
+ if (!peer_dev_int->ice_peer_wq)
+ return -ENOMEM;
+
+ /* Assign a unique index and hence name for peer device */
+ status = ida_simple_get(&ice_peer_index_ida, 0, 0, GFP_KERNEL);
+ if (status < 0) {
+ dev_err(&pdev->dev,
+ "failed to get unique index for device\n");
+ devm_kfree(&pdev->dev, peer_dev);
+ return status;
+ }
+ peer_dev->index = status;
+ peer_dev->pdev = pdev;
+ peer_dev->ari_ena = pci_ari_enabled(pdev->bus);
+ peer_dev->bus_num = PCI_BUS_NUM(pdev->devfn);
+ if (!peer_dev->ari_ena) {
+ peer_dev->dev_num = PCI_SLOT(pdev->devfn);
+ peer_dev->fn_num = PCI_FUNC(pdev->devfn);
+ } else {
+ peer_dev->dev_num = 0;
+ peer_dev->fn_num = pdev->devfn & 0xff;
+ }
+
+ qos_info = &peer_dev->initial_qos_info;
+
+ /* setup qos_info fields with defaults */
+ qos_info->num_apps = 0;
+ qos_info->num_tc = 1;
+
+ for (j = 0; j < ICE_IDC_MAX_USER_PRIORITY; j++)
+ qos_info->up2tc[j] = 0;
+
+ qos_info->tc_info[0].rel_bw = 100;
+ for (j = 1; j < IEEE_8021QAZ_MAX_TCS; j++)
+ qos_info->tc_info[j].rel_bw = 0;
+
+ /* for DCB, override the qos_info defaults. */
+ ice_setup_dcb_qos_info(pf, qos_info);
+
+ /* make sure peer specific resources such as msix_count and
+ * msix_entries are initialized
+ */
+ switch (peer_dev_ids[i].id) {
+ case ICE_PEER_RDMA_DEV:
+ if (test_bit(ICE_FLAG_IWARP_ENA, pf->flags)) {
+ peer_dev->msix_count = pf->num_rdma_msix;
+ entry = &pf->msix_entries[pf->rdma_base_vector];
+ }
+ break;
+ default:
+ break;
+ }
+
+ peer_dev->msix_entries = entry;
+ ice_peer_state_change(peer_dev_int, ICE_PEER_DEV_STATE_INIT,
+ false);
+ status = platform_device_register(platform_dev);
+ if (status) {
+ pr_err("Failed to register peer device %s\n",
+ platform_dev->name);
+ return status;
+ }
+ }
+
+ return status;
+}
diff --git a/drivers/net/ethernet/intel/ice/ice_idc.h b/drivers/net/ethernet/intel/ice/ice_idc.h
new file mode 100644
index 000000000000..d29e946fe2f1
--- /dev/null
+++ b/drivers/net/ethernet/intel/ice/ice_idc.h
@@ -0,0 +1,360 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Copyright (c) 2019, Intel Corporation. */
+
+#ifndef _ICE_IDC_H_
+#define _ICE_IDC_H_
+
+#include <linux/kernel.h>
+#include <linux/device.h>
+#include <linux/if_ether.h>
+#include <linux/netdevice.h>
+#include <linux/dcbnl.h>
+#include <linux/platform_device.h>
+
+/* This major and minor version represent IDC API version information.
+ * During peer driver registration, peer driver specifies major and minor
+ * version information (via. peer_driver:ver_info). It gets checked against
+ * following defines and if mismatch, then peer driver registration
+ * fails and appropriate message gets logged.
+ */
+#define ICE_PEER_MAJOR_VER 6
+#define ICE_PEER_MINOR_VER 1
+
+enum ice_peer_features {
+ ICE_PEER_FEATURE_ADK_SUPPORT,
+ ICE_PEER_FEATURE_PTP_SUPPORT,
+ ICE_PEER_FEATURE_SRIOV_SUPPORT,
+ ICE_PEER_FEATURE_PCIIOV_SUPPORT,
+ ICE_PEER_FEATURE_NBITS
+};
+
+#define ICE_SRIOV_SUP BIT(ICE_PEER_FEATURE_SRIOV_SUPPORT)
+
+#ifdef CONFIG_PCI_IOV
+#define ICE_PCIIOV_SUP BIT(ICE_PEER_FEATURE_PCIIOV_SUPPORT)
+#else
+#define ICE_PCIIOV_SUP 0
+#endif /* CONFIG_PCI_IOV */
+
+#define ICE_IDC_FEATURES (ICE_SRIOV_SUP | ICE_PCIIOV_SUP)
+
+enum ice_event_type {
+ ICE_EVENT_LINK_CHANGE = 0x0,
+ ICE_EVENT_MTU_CHANGE,
+ ICE_EVENT_TC_CHANGE,
+ ICE_EVENT_API_CHANGE,
+ ICE_EVENT_MBX_CHANGE,
+ ICE_EVENT_NBITS /* must be last */
+};
+
+enum ice_res_type {
+ ICE_INVAL_RES = 0x0,
+ ICE_VSI,
+ ICE_VEB,
+ ICE_EVENT_Q,
+ ICE_EGRESS_CMPL_Q,
+ ICE_CMPL_EVENT_Q,
+ ICE_ASYNC_EVENT_Q,
+ ICE_DOORBELL_Q,
+ ICE_RDMA_QSETS_TXSCHED,
+};
+
+enum ice_peer_reset_type {
+ ICE_PEER_PFR = 0,
+ ICE_PEER_CORER,
+ ICE_PEER_CORER_SW_CORE,
+ ICE_PEER_CORER_SW_FULL,
+ ICE_PEER_GLOBR,
+};
+
+/* reason notified to peer driver as part of event handling */
+enum ice_close_reason {
+ ICE_REASON_INVAL = 0x0,
+ ICE_REASON_HW_UNRESPONSIVE,
+ ICE_REASON_INTERFACE_DOWN, /* Administrative down */
+ ICE_REASON_PEER_DRV_UNREG, /* peer driver getting unregistered */
+ ICE_REASON_PEER_DEV_UNINIT,
+ ICE_REASON_GLOBR_REQ,
+ ICE_REASON_CORER_REQ,
+ ICE_REASON_EMPR_REQ,
+ ICE_REASON_PFR_REQ,
+ ICE_REASON_HW_RESET_PENDING,
+ ICE_REASON_PARAM_CHANGE,
+};
+
+enum ice_rdma_filter {
+ ICE_RDMA_FILTER_INVAL = 0x0,
+ ICE_RDMA_FILTER_IWARP,
+ ICE_RDMA_FILTER_ROCEV2,
+ ICE_RDMA_FILTER_BOTH,
+};
+
+/* This information is needed to handle peer driver registration,
+ * instead of adding more params to peer_drv_registration function,
+ * let's get it thru' peer_drv object.
+ */
+struct ice_ver_info {
+ u16 major;
+ u16 minor;
+ u64 support;
+};
+
+/* Struct to hold per DCB APP info */
+struct ice_dcb_app_info {
+ u8 priority;
+ u8 selector;
+ u16 prot_id;
+};
+
+struct ice_peer_dev;
+struct ice_peer_dev_int;
+
+#define ICE_IDC_MAX_USER_PRIORITY 8
+#define ICE_IDC_MAX_APPS 8
+
+/* Struct to hold per RDMA Qset info */
+struct ice_rdma_qset_params {
+ u32 teid; /* qset TEID */
+ u16 qs_handle; /* RDMA driver provides this */
+ u16 vsi_id; /* VSI index */
+ u8 tc; /* TC branch the QSet should belong to */
+ u8 reserved[3];
+};
+
+struct ice_res_base {
+ /* Union for future provision e.g. other res_type */
+ union {
+ struct ice_rdma_qset_params qsets;
+ } res;
+};
+
+struct ice_res {
+ /* Type of resource. Filled by peer driver */
+ enum ice_res_type res_type;
+ /* Count requested by peer driver */
+ u16 cnt_req;
+
+ /* Number of resources allocated. Filled in by callee.
+ * Based on this value, caller to fill up "resources"
+ */
+ u16 res_allocated;
+
+ /* Unique handle to resources allocated. Zero if call fails.
+ * Allocated by callee and for now used by caller for internal
+ * tracking purpose.
+ */
+ u32 res_handle;
+
+ /* Peer driver has to allocate sufficient memory, to accommodate
+ * cnt_requested before calling this function.
+ * Memory has to be zero initialized. It is input/output param.
+ * As a result of alloc_res API, this structures will be populated.
+ */
+ struct ice_res_base res[1];
+};
+
+struct ice_qos_info {
+ u64 tc_ctx;
+ u8 rel_bw;
+ u8 prio_type;
+ u8 egress_virt_up;
+ u8 ingress_virt_up;
+};
+
+/* Struct to hold QoS info */
+struct ice_qos_params {
+ struct ice_qos_info tc_info[IEEE_8021QAZ_MAX_TCS];
+ u8 up2tc[ICE_IDC_MAX_USER_PRIORITY];
+ u8 vsi_relative_bw;
+ u8 vsi_priority_type;
+ u32 num_apps;
+ struct ice_dcb_app_info apps[ICE_IDC_MAX_APPS];
+ u8 num_tc;
+};
+
+union ice_event_info {
+ /* ICE_EVENT_LINK_CHANGE */
+ struct {
+ struct net_device *lwr_nd;
+ u16 vsi_num; /* HW index of VSI corresponding to lwr ndev */
+ u8 new_link_state;
+ u8 lport;
+ } link_info;
+ /* ICE_EVENT_MTU_CHANGE */
+ u16 mtu;
+ /* ICE_EVENT_TC_CHANGE */
+ struct ice_qos_params port_qos;
+ /* ICE_EVENT_API_CHANGE */
+ u8 api_rdy;
+ /* ICE_EVENT_MBX_CHANGE */
+ u8 mbx_rdy;
+};
+
+/* ice_event elements are to be passed back and forth between the ice driver
+ * and the peer drivers. They are to be used to both register/unregister
+ * for event reporting and to report an event (events can be either ice
+ * generated or peer generated).
+ *
+ * For (un)registering for events, the structure needs to be populated with:
+ * reporter - pointer to the ice_peer_dev struct of the peer (un)registering
+ * type - bitmap with bits set for event types to (un)register for
+ *
+ * For reporting events, the structure needs to be populated with:
+ * reporter - pointer to peer that generated the event (NULL for ice)
+ * type - bitmap with single bit set for this event type
+ * info - union containing data relevant to this event type
+ */
+struct ice_event {
+ struct ice_peer_dev *reporter;
+ DECLARE_BITMAP(type, ICE_EVENT_NBITS);
+ union ice_event_info info;
+};
+
+/* Following APIs are implemented by ICE driver and invoked by peer drivers */
+struct ice_ops {
+ /* APIs to allocate resources such as VEB, VSI, Doorbell queues,
+ * completion queues, Tx/Rx queues, etc...
+ */
+ int (*alloc_res)(struct ice_peer_dev *peer_dev,
+ struct ice_res *res,
+ int partial_acceptable);
+ int (*free_res)(struct ice_peer_dev *peer_dev,
+ struct ice_res *res);
+
+ int (*is_vsi_ready)(struct ice_peer_dev *peer_dev);
+ int (*peer_register)(struct ice_peer_dev *peer_dev);
+ int (*peer_unregister)(struct ice_peer_dev *peer_dev);
+ int (*request_reset)(struct ice_peer_dev *dev,
+ enum ice_peer_reset_type reset_type);
+
+ void (*notify_state_change)(struct ice_peer_dev *dev,
+ struct ice_event *event);
+
+ /* Notification APIs */
+ void (*reg_for_notification)(struct ice_peer_dev *dev,
+ struct ice_event *event);
+ void (*unreg_for_notification)(struct ice_peer_dev *dev,
+ struct ice_event *event);
+ int (*update_vsi_filter)(struct ice_peer_dev *peer_dev,
+ enum ice_rdma_filter filter, bool enable);
+ int (*vc_send)(struct ice_peer_dev *peer_dev, u32 vf_id, u8 *msg,
+ u16 len);
+};
+
+/* Following APIs are implemented by peer drivers and invoked by ICE driver */
+struct ice_peer_ops {
+ void (*event_handler)(struct ice_peer_dev *peer_dev,
+ struct ice_event *event);
+
+ /* Why we have 'open' and when it is expected to be called:
+ * 1. symmetric set of API w.r.t close
+ * 2. To be invoked form driver initialization path
+ * - call peer_driver:open once ice driver is fully initialized
+ * 3. To be invoked upon RESET complete
+ *
+ * Calls to open are performed from ice_finish_init_peer_device
+ * which is invoked from the service task. This helps keep devices
+ * from having their open called until the ice driver is ready and
+ * has scheduled its service task.
+ */
+ int (*open)(struct ice_peer_dev *peer_dev);
+
+ /* Peer's close function is to be called when the peer needs to be
+ * quiesced. This can be for a variety of reasons (enumerated in the
+ * ice_close_reason enum struct). A call to close will only be
+ * followed by a call to either remove or open. No IDC calls from the
+ * peer should be accepted until it is re-opened.
+ *
+ * The *reason* parameter is the reason for the call to close. This
+ * can be for any reason enumerated in the ice_close_reason struct.
+ * It's primary reason is for the peer's bookkeeping and in case the
+ * peer want to perform any different tasks dictated by the reason.
+ */
+ void (*close)(struct ice_peer_dev *peer_dev,
+ enum ice_close_reason reason);
+
+ int (*vc_receive)(struct ice_peer_dev *peer_dev, u32 vf_id, u8 *msg,
+ u16 len);
+ /* tell RDMA peer to prepare for TC change in a blocking call
+ * that will directly precede the change event
+ */
+ void (*prep_tc_change)(struct ice_peer_dev *peer_dev);
+};
+
+#define ICE_PEER_RDMA_NAME "ice_rdma"
+#define ICE_PEER_RDMA_DEV 0x00000010
+#define ICE_MAX_NUM_PEERS 4
+
+/* The const struct that instantiates peer_dev_id needs to be initialized
+ * in the .c with the macro ASSIGN_PEER_INFO.
+ * For example:
+ * static const struct peer_dev_id peer_dev_ids[] = ASSIGN_PEER_INFO;
+ */
+struct peer_dev_id {
+ char *name;
+ int id;
+};
+
+#define ASSIGN_PEER_INFO \
+{ \
+ { ICE_PEER_RDMA_NAME, ICE_PEER_RDMA_DEV }, \
+}
+
+/* structure representing peer device */
+struct ice_peer_dev {
+ struct platform_device platform_dev;
+ struct ice_ver_info ver;
+ struct pci_dev *pdev; /* PCI device of corresponding to main function */
+ /* KVA / Linear address corresponding to BAR0 of underlying
+ * pci_device.
+ */
+ u8 __iomem *hw_addr;
+ int peer_dev_id;
+
+ unsigned int index;
+
+ u8 ftype; /* PF(false) or VF (true) */
+
+ /* Data VSI created by driver */
+ u16 pf_vsi_num;
+
+ u8 lan_addr[ETH_ALEN]; /* default MAC address of main netdev */
+ u16 initial_mtu; /* Initial MTU of main netdev */
+ struct ice_qos_params initial_qos_info;
+ struct net_device *netdev;
+ /* PCI info */
+ u8 ari_ena;
+ u16 bus_num;
+ u16 dev_num;
+ u16 fn_num;
+
+ /* Based on peer driver type, this shall point to corresponding MSIx
+ * entries in pf->msix_entries (which were allocated as part of driver
+ * initialization) e.g. for RDMA driver, msix_entries reserved will be
+ * num_online_cpus + 1.
+ */
+ u16 msix_count; /* How many vectors are reserved for this device */
+ struct msix_entry *msix_entries;
+
+ /* Following struct contains function pointers to be initialized
+ * by ICE driver and called by peer driver
+ */
+ const struct ice_ops *ops;
+
+ /* Following struct contains function pointers to be initialized
+ * by peer driver and called by ICE driver
+ */
+ const struct ice_peer_ops *peer_ops;
+
+ /* Pointer to peer_drv struct to be populated by peer driver */
+ struct ice_peer_drv *peer_drv;
+};
+
+static inline struct ice_peer_dev *dev_to_ice_peer(struct device *_dev)
+{
+ struct platform_device *platform_dev;
+
+ platform_dev = container_of(_dev, struct platform_device, dev);
+ return container_of(platform_dev, struct ice_peer_dev, platform_dev);
+}
+#endif /* _ICE_IDC_H_*/
diff --git a/drivers/net/ethernet/intel/ice/ice_idc_int.h b/drivers/net/ethernet/intel/ice/ice_idc_int.h
new file mode 100644
index 000000000000..f8ff8cac7a26
--- /dev/null
+++ b/drivers/net/ethernet/intel/ice/ice_idc_int.h
@@ -0,0 +1,67 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Copyright (c) 2019, Intel Corporation. */
+
+#ifndef _ICE_IDC_INT_H_
+#define _ICE_IDC_INT_H_
+
+#include "ice_idc.h"
+
+int ice_unroll_peer(struct ice_peer_dev_int *peer_dev_int, void *data);
+int ice_unreg_peer_device(struct ice_peer_dev_int *peer_dev_int, void *data);
+
+enum ice_peer_dev_state {
+ ICE_PEER_DEV_STATE_INIT,
+ ICE_PEER_DEV_STATE_PROBED,
+ ICE_PEER_DEV_STATE_OPENING,
+ ICE_PEER_DEV_STATE_OPENED,
+ ICE_PEER_DEV_STATE_PREP_RST,
+ ICE_PEER_DEV_STATE_PREPPED,
+ ICE_PEER_DEV_STATE_CLOSING,
+ ICE_PEER_DEV_STATE_CLOSED,
+ ICE_PEER_DEV_STATE_REMOVED,
+ ICE_PEER_DEV_STATE_API_RDY,
+ ICE_PEER_DEV_STATE_NBITS, /* must be last */
+};
+
+enum ice_peer_drv_state {
+ ICE_PEER_DRV_STATE_MBX_RDY,
+ ICE_PEER_DRV_STATE_NBITS, /* must be last */
+};
+
+struct ice_peer_drv_int {
+ struct ice_peer_drv *peer_drv;
+ struct ice_peer_dev *peer_dev;
+
+ /* States associated with peer driver */
+ DECLARE_BITMAP(state, ICE_PEER_DRV_STATE_NBITS);
+
+ /* if this peer_dev is the originator of an event, these are the
+ * most recent events of each type
+ */
+ struct ice_event current_events[ICE_EVENT_NBITS];
+};
+
+struct ice_peer_dev_int {
+ struct ice_peer_dev peer_dev; /* public structure */
+ struct ice_peer_drv_int *peer_drv_int; /* driver private structure */
+
+ /* if this peer_dev is the originator of an event, these are the
+ * most recent events of each type
+ */
+ struct ice_event current_events[ICE_EVENT_NBITS];
+ /* Events a peer has registered to be notified about */
+ DECLARE_BITMAP(events, ICE_EVENT_NBITS);
+
+ /* States associated with peer device */
+ DECLARE_BITMAP(state, ICE_PEER_DEV_STATE_NBITS);
+ struct mutex peer_dev_state_mutex; /* peer_dev state mutex */
+
+ /* per peer workqueue */
+ struct workqueue_struct *ice_peer_wq;
+
+ struct work_struct peer_prep_task;
+ struct work_struct peer_close_task;
+
+ enum ice_close_reason rst_type;
+};
+#endif /* !_ICE_IDC_INT_H_ */
diff --git a/drivers/net/ethernet/intel/ice/ice_main.c b/drivers/net/ethernet/intel/ice/ice_main.c
index 28ec0d57941d..08bce0d67634 100644
--- a/drivers/net/ethernet/intel/ice/ice_main.c
+++ b/drivers/net/ethernet/intel/ice/ice_main.c
@@ -2092,6 +2092,8 @@ static void ice_init_pf(struct ice_pf *pf)
{
bitmap_zero(pf->flags, ICE_PF_FLAGS_NBITS);
set_bit(ICE_FLAG_MSIX_ENA, pf->flags);
+ if (pf->hw.func_caps.common_cap.iwarp)
+ set_bit(ICE_FLAG_IWARP_ENA, pf->flags);
#ifdef CONFIG_PCI_IOV
if (pf->hw.func_caps.common_cap.sr_iov_1_1) {
struct ice_hw *hw = &pf->hw;
@@ -2145,6 +2147,17 @@ static int ice_ena_msix_range(struct ice_pf *pf)
v_budget += pf->num_lan_msix;
v_left -= pf->num_lan_msix;
+ /* reserve vectors for RDMA peer driver */
+ if (test_bit(ICE_FLAG_IWARP_ENA, pf->flags)) {
+ /* RDMA peer driver needs one extra to handle misc causes */
+ needed = min_t(int, num_online_cpus(), v_left) + 1;
+ if (v_left < needed)
+ goto no_vecs_left_err;
+ pf->num_rdma_msix = needed;
+ v_budget += needed;
+ v_left -= needed;
+ }
+
pf->msix_entries = devm_kcalloc(&pf->pdev->dev, v_budget,
sizeof(*pf->msix_entries), GFP_KERNEL);
@@ -2171,6 +2184,8 @@ static int ice_ena_msix_range(struct ice_pf *pf)
"not enough vectors. requested = %d, obtained = %d\n",
v_budget, v_actual);
if (v_actual >= (pf->num_lan_msix + 1)) {
+ clear_bit(ICE_FLAG_IWARP_ENA, pf->flags);
+ pf->num_rdma_msix = 0;
pf->num_avail_sw_msix = v_actual -
(pf->num_lan_msix + 1);
} else if (v_actual >= 2) {
@@ -2189,6 +2204,11 @@ static int ice_ena_msix_range(struct ice_pf *pf)
devm_kfree(&pf->pdev->dev, pf->msix_entries);
goto exit_err;
+no_vecs_left_err:
+ dev_err(&pf->pdev->dev,
+ "not enough vectors. requested = %d, available = %d\n",
+ needed, v_left);
+ err = -ERANGE;
exit_err:
pf->num_lan_msix = 0;
clear_bit(ICE_FLAG_MSIX_ENA, pf->flags);
@@ -2351,6 +2371,12 @@ ice_probe(struct pci_dev *pdev, const struct pci_device_id __always_unused *ent)
ice_init_pf(pf);
+ pf->peers = devm_kcalloc(dev, ICE_MAX_NUM_PEERS, sizeof(*pf->peers),
+ GFP_KERNEL);
+ if (!pf->peers) {
+ err = -ENOMEM;
+ goto err_init_peer_unroll;
+ }
err = ice_init_pf_dcb(pf, false);
if (err) {
clear_bit(ICE_FLAG_DCB_CAPABLE, pf->flags);
@@ -2432,10 +2458,20 @@ ice_probe(struct pci_dev *pdev, const struct pci_device_id __always_unused *ent)
goto err_alloc_sw_unroll;
}
+ err = ice_init_peer_devices(pf);
+ if (err) {
+ dev_err(dev, "Failed to initialize peer devices: 0x%x\n", err);
+ err = -EIO;
+ goto err_init_peer_unroll;
+ }
+
ice_verify_cacheline_size(pf);
return 0;
+ /* Unwind non-managed device resources, etc. if something failed */
+err_init_peer_unroll:
+ ice_for_each_peer(pf, NULL, ice_unroll_peer);
err_alloc_sw_unroll:
set_bit(__ICE_SERVICE_DIS, pf->state);
set_bit(__ICE_DOWN, pf->state);
@@ -2477,6 +2513,7 @@ static void ice_remove(struct pci_dev *pdev)
if (test_bit(ICE_FLAG_SRIOV_ENA, pf->flags))
ice_free_vfs(pf);
ice_vsi_release_all(pf);
+ ice_for_each_peer(pf, NULL, ice_unreg_peer_device);
ice_free_irq_msix_misc(pf);
ice_for_each_vsi(pf, i) {
if (!pf->vsi[i])
@@ -2676,6 +2713,7 @@ static int __init ice_module_init(void)
if (status) {
pr_err("failed to register PCI driver, err %d\n", status);
destroy_workqueue(ice_wq);
+ ida_destroy(&ice_peer_index_ida);
}
return status;
@@ -2692,6 +2730,10 @@ static void __exit ice_module_exit(void)
{
pci_unregister_driver(&ice_driver);
destroy_workqueue(ice_wq);
+ /* release all cached layer within ida tree, associated with
+ * ice_peer_index_ida object
+ */
+ ida_destroy(&ice_peer_index_ida);
pr_info("module unloaded\n");
}
module_exit(ice_module_exit);
diff --git a/drivers/net/ethernet/intel/ice/ice_type.h b/drivers/net/ethernet/intel/ice/ice_type.h
index 24bbef8bbe69..99822b4e8621 100644
--- a/drivers/net/ethernet/intel/ice/ice_type.h
+++ b/drivers/net/ethernet/intel/ice/ice_type.h
@@ -161,6 +161,7 @@ struct ice_hw_common_caps {
u8 rss_table_entry_width; /* RSS Entry width in bits */
u8 dcb;
+ u8 iwarp;
};
/* Function specific capabilities */
--
2.21.0
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