Expose c0 and SW encap ICM for RDMA

These two series from Mark and Shun extend RDMA mlx5 API.

Mark's series provides c0 register used to match egress
traffic sent by local device.

Shun's series adds new type for ICM area.

Link: https://lore.kernel.org/all/cover.1701871118.git.leon@kernel.org
Signed-off-by: Leon Romanovsky <leon@kernel.org>

5 files changed, 59 insertions, 35 deletions

diff --git a/drivers/firmware/Kconfig b/drivers/firmware/Kconfig
index 74d00b0c83fe..4a98a859d44d 100644
--- a/drivers/firmware/Kconfig
+++ b/drivers/firmware/Kconfig
@@ -131,7 +131,7 @@ config RASPBERRYPI_FIRMWARE
 
 config FW_CFG_SYSFS
 	tristate "QEMU fw_cfg device support in sysfs"
-	depends on SYSFS && (ARM || ARM64 || PARISC || PPC_PMAC || SPARC || X86)
+	depends on SYSFS && (ARM || ARM64 || PARISC || PPC_PMAC || RISCV || SPARC || X86)
 	depends on HAS_IOPORT_MAP
 	default n
 	help
diff --git a/drivers/firmware/arm_ffa/driver.c b/drivers/firmware/arm_ffa/driver.c
index 07b72c679247..6146b2927d5c 100644
--- a/drivers/firmware/arm_ffa/driver.c
+++ b/drivers/firmware/arm_ffa/driver.c
@@ -99,6 +99,7 @@ struct ffa_drv_info {
 	void *tx_buffer;
 	bool mem_ops_native;
 	bool bitmap_created;
+	bool notif_enabled;
 	unsigned int sched_recv_irq;
 	unsigned int cpuhp_state;
 	struct ffa_pcpu_irq __percpu *irq_pcpu;
@@ -782,7 +783,7 @@ static void ffa_notification_info_get(void)
 			if (ids_processed >= max_ids - 1)
 				break;
 
-			part_id = packed_id_list[++ids_processed];
+			part_id = packed_id_list[ids_processed++];
 
 			if (!ids_count[list]) { /* Global Notification */
 				__do_sched_recv_cb(part_id, 0, false);
@@ -794,7 +795,7 @@ static void ffa_notification_info_get(void)
 				if (ids_processed >= max_ids - 1)
 					break;
 
-				vcpu_id = packed_id_list[++ids_processed];
+				vcpu_id = packed_id_list[ids_processed++];
 
 				__do_sched_recv_cb(part_id, vcpu_id, true);
 			}
@@ -889,6 +890,8 @@ static int ffa_memory_lend(struct ffa_mem_ops_args *args)
 
 #define FFA_SECURE_PARTITION_ID_FLAG	BIT(15)
 
+#define ffa_notifications_disabled()	(!drv_info->notif_enabled)
+
 enum notify_type {
 	NON_SECURE_VM,
 	SECURE_PARTITION,
@@ -908,6 +911,9 @@ static int ffa_sched_recv_cb_update(u16 part_id, ffa_sched_recv_cb callback,
 	struct ffa_dev_part_info *partition;
 	bool cb_valid;
 
+	if (ffa_notifications_disabled())
+		return -EOPNOTSUPP;
+
 	partition = xa_load(&drv_info->partition_info, part_id);
 	write_lock(&partition->rw_lock);
 
@@ -1001,6 +1007,9 @@ static int ffa_notify_relinquish(struct ffa_device *dev, int notify_id)
 	int rc;
 	enum notify_type type = ffa_notify_type_get(dev->vm_id);
 
+	if (ffa_notifications_disabled())
+		return -EOPNOTSUPP;
+
 	if (notify_id >= FFA_MAX_NOTIFICATIONS)
 		return -EINVAL;
 
@@ -1027,6 +1036,9 @@ static int ffa_notify_request(struct ffa_device *dev, bool is_per_vcpu,
 	u32 flags = 0;
 	enum notify_type type = ffa_notify_type_get(dev->vm_id);
 
+	if (ffa_notifications_disabled())
+		return -EOPNOTSUPP;
+
 	if (notify_id >= FFA_MAX_NOTIFICATIONS)
 		return -EINVAL;
 
@@ -1057,6 +1069,9 @@ static int ffa_notify_send(struct ffa_device *dev, int notify_id,
 {
 	u32 flags = 0;
 
+	if (ffa_notifications_disabled())
+		return -EOPNOTSUPP;
+
 	if (is_per_vcpu)
 		flags |= (PER_VCPU_NOTIFICATION_FLAG | vcpu << 16);
 
@@ -1233,7 +1248,7 @@ static void ffa_partitions_cleanup(void)
 	if (!count)
 		return;
 
-	info = kcalloc(count, sizeof(**info), GFP_KERNEL);
+	info = kcalloc(count, sizeof(*info), GFP_KERNEL);
 	if (!info)
 		return;
 
@@ -1311,8 +1326,10 @@ static int ffa_sched_recv_irq_map(void)
 
 static void ffa_sched_recv_irq_unmap(void)
 {
-	if (drv_info->sched_recv_irq)
+	if (drv_info->sched_recv_irq) {
 		irq_dispose_mapping(drv_info->sched_recv_irq);
+		drv_info->sched_recv_irq = 0;
+	}
 }
 
 static int ffa_cpuhp_pcpu_irq_enable(unsigned int cpu)
@@ -1329,17 +1346,23 @@ static int ffa_cpuhp_pcpu_irq_disable(unsigned int cpu)
 
 static void ffa_uninit_pcpu_irq(void)
 {
-	if (drv_info->cpuhp_state)
+	if (drv_info->cpuhp_state) {
 		cpuhp_remove_state(drv_info->cpuhp_state);
+		drv_info->cpuhp_state = 0;
+	}
 
-	if (drv_info->notif_pcpu_wq)
+	if (drv_info->notif_pcpu_wq) {
 		destroy_workqueue(drv_info->notif_pcpu_wq);
+		drv_info->notif_pcpu_wq = NULL;
+	}
 
 	if (drv_info->sched_recv_irq)
 		free_percpu_irq(drv_info->sched_recv_irq, drv_info->irq_pcpu);
 
-	if (drv_info->irq_pcpu)
+	if (drv_info->irq_pcpu) {
 		free_percpu(drv_info->irq_pcpu);
+		drv_info->irq_pcpu = NULL;
+	}
 }
 
 static int ffa_init_pcpu_irq(unsigned int irq)
@@ -1388,22 +1411,23 @@ static void ffa_notifications_cleanup(void)
 		ffa_notification_bitmap_destroy();
 		drv_info->bitmap_created = false;
 	}
+	drv_info->notif_enabled = false;
 }
 
-static int ffa_notifications_setup(void)
+static void ffa_notifications_setup(void)
 {
 	int ret, irq;
 
 	ret = ffa_features(FFA_NOTIFICATION_BITMAP_CREATE, 0, NULL, NULL);
 	if (ret) {
-		pr_err("Notifications not supported, continuing with it ..\n");
-		return 0;
+		pr_info("Notifications not supported, continuing with it ..\n");
+		return;
 	}
 
 	ret = ffa_notification_bitmap_create();
 	if (ret) {
-		pr_err("notification_bitmap_create error %d\n", ret);
-		return ret;
+		pr_info("Notification bitmap create error %d\n", ret);
+		return;
 	}
 	drv_info->bitmap_created = true;
 
@@ -1422,14 +1446,11 @@ static int ffa_notifications_setup(void)
 	hash_init(drv_info->notifier_hash);
 	mutex_init(&drv_info->notify_lock);
 
-	/* Register internal scheduling callback */
-	ret = ffa_sched_recv_cb_update(drv_info->vm_id, ffa_self_notif_handle,
-				       drv_info, true);
-	if (!ret)
-		return ret;
+	drv_info->notif_enabled = true;
+	return;
 cleanup:
+	pr_info("Notification setup failed %d, not enabled\n", ret);
 	ffa_notifications_cleanup();
-	return ret;
 }
 
 static int __init ffa_init(void)
@@ -1483,17 +1504,18 @@ static int __init ffa_init(void)
 	mutex_init(&drv_info->rx_lock);
 	mutex_init(&drv_info->tx_lock);
 
-	ffa_setup_partitions();
-
 	ffa_set_up_mem_ops_native_flag();
 
-	ret = ffa_notifications_setup();
+	ffa_notifications_setup();
+
+	ffa_setup_partitions();
+
+	ret = ffa_sched_recv_cb_update(drv_info->vm_id, ffa_self_notif_handle,
+				       drv_info, true);
 	if (ret)
-		goto partitions_cleanup;
+		pr_info("Failed to register driver sched callback %d\n", ret);
 
 	return 0;
-partitions_cleanup:
-	ffa_partitions_cleanup();
 free_pages:
 	if (drv_info->tx_buffer)
 		free_pages_exact(drv_info->tx_buffer, RXTX_BUFFER_SIZE);
diff --git a/drivers/firmware/arm_scmi/perf.c b/drivers/firmware/arm_scmi/perf.c
index c2435be0ae1b..e11555de99ab 100644
--- a/drivers/firmware/arm_scmi/perf.c
+++ b/drivers/firmware/arm_scmi/perf.c
@@ -152,7 +152,7 @@ struct perf_dom_info {
 	u32 opp_count;
 	u32 sustained_freq_khz;
 	u32 sustained_perf_level;
-	u32 mult_factor;
+	unsigned long mult_factor;
 	struct scmi_perf_domain_info info;
 	struct scmi_opp opp[MAX_OPPS];
 	struct scmi_fc_info *fc_info;
@@ -268,13 +268,14 @@ scmi_perf_domain_attributes_get(const struct scmi_protocol_handle *ph,
 		dom_info->sustained_perf_level =
 					le32_to_cpu(attr->sustained_perf_level);
 		if (!dom_info->sustained_freq_khz ||
-		    !dom_info->sustained_perf_level)
+		    !dom_info->sustained_perf_level ||
+		    dom_info->level_indexing_mode)
 			/* CPUFreq converts to kHz, hence default 1000 */
 			dom_info->mult_factor =	1000;
 		else
 			dom_info->mult_factor =
-					(dom_info->sustained_freq_khz * 1000) /
-					dom_info->sustained_perf_level;
+					(dom_info->sustained_freq_khz * 1000UL)
+					/ dom_info->sustained_perf_level;
 		strscpy(dom_info->info.name, attr->name,
 			SCMI_SHORT_NAME_MAX_SIZE);
 	}
@@ -798,7 +799,7 @@ static int scmi_dvfs_device_opps_add(const struct scmi_protocol_handle *ph,
 		if (!dom->level_indexing_mode)
 			freq = dom->opp[idx].perf * dom->mult_factor;
 		else
-			freq = dom->opp[idx].indicative_freq * 1000;
+			freq = dom->opp[idx].indicative_freq * dom->mult_factor;
 
 		data.level = dom->opp[idx].perf;
 		data.freq = freq;
@@ -845,7 +846,8 @@ static int scmi_dvfs_freq_set(const struct scmi_protocol_handle *ph, u32 domain,
 	} else {
 		struct scmi_opp *opp;
 
-		opp = LOOKUP_BY_FREQ(dom->opps_by_freq, freq / 1000);
+		opp = LOOKUP_BY_FREQ(dom->opps_by_freq,
+				     freq / dom->mult_factor);
 		if (!opp)
 			return -EIO;
 
@@ -879,7 +881,7 @@ static int scmi_dvfs_freq_get(const struct scmi_protocol_handle *ph, u32 domain,
 		if (!opp)
 			return -EIO;
 
-		*freq = opp->indicative_freq * 1000;
+		*freq = opp->indicative_freq * dom->mult_factor;
 	}
 
 	return ret;
@@ -902,7 +904,7 @@ static int scmi_dvfs_est_power_get(const struct scmi_protocol_handle *ph,
 		if (!dom->level_indexing_mode)
 			opp_freq = opp->perf * dom->mult_factor;
 		else
-			opp_freq = opp->indicative_freq * 1000;
+			opp_freq = opp->indicative_freq * dom->mult_factor;
 
 		if (opp_freq < *freq)
 			continue;
diff --git a/drivers/firmware/efi/unaccepted_memory.c b/drivers/firmware/efi/unaccepted_memory.c
index 3f2f7bf6e335..5b439d04079c 100644
--- a/drivers/firmware/efi/unaccepted_memory.c
+++ b/drivers/firmware/efi/unaccepted_memory.c
@@ -101,7 +101,7 @@ retry:
 	 * overlap on physical address level.
 	 */
 	list_for_each_entry(entry, &accepting_list, list) {
-		if (entry->end < range.start)
+		if (entry->end <= range.start)
 			continue;
 		if (entry->start >= range.end)
 			continue;
diff --git a/drivers/firmware/qemu_fw_cfg.c b/drivers/firmware/qemu_fw_cfg.c
index a69399a6b7c0..1448f61173b3 100644
--- a/drivers/firmware/qemu_fw_cfg.c
+++ b/drivers/firmware/qemu_fw_cfg.c
@@ -211,7 +211,7 @@ static void fw_cfg_io_cleanup(void)
 
 /* arch-specific ctrl & data register offsets are not available in ACPI, DT */
 #if !(defined(FW_CFG_CTRL_OFF) && defined(FW_CFG_DATA_OFF))
-# if (defined(CONFIG_ARM) || defined(CONFIG_ARM64))
+# if (defined(CONFIG_ARM) || defined(CONFIG_ARM64) || defined(CONFIG_RISCV))
 #  define FW_CFG_CTRL_OFF 0x08
 #  define FW_CFG_DATA_OFF 0x00
 #  define FW_CFG_DMA_OFF 0x10