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From 108ed3960c8f1e65ad64b22a4a073c4e42204132 Mon Sep 17 00:00:00 2001
From: Long Li <longli@microsoft.com>
Date: Thu, 3 Nov 2022 12:16:20 -0700
Subject: [PATCH 04/23] net: mana: Record the physical address for doorbell
page region
For supporting RDMA device with multiple user contexts with their
individual doorbell pages, record the start address of doorbell page
region for use by the RDMA driver to allocate user context doorbell IDs.
Reviewed-by: Dexuan Cui <decui@microsoft.com>
Signed-off-by: Long Li <longli@microsoft.com>
Link: https://lore.kernel.org/r/1667502990-2559-3-git-send-email-longli@linuxonhyperv.com
Acked-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
(cherry picked from commit f3dc096246091048677c45cfc0e24ad512927b52)
Signed-off-by: Bastian Blank <waldi@debian.org>
---
drivers/net/ethernet/microsoft/mana/gdma.h | 2 ++
drivers/net/ethernet/microsoft/mana/gdma_main.c | 4 ++++
2 files changed, 6 insertions(+)
diff --git a/drivers/net/ethernet/microsoft/mana/gdma.h b/drivers/net/ethernet/microsoft/mana/gdma.h
index df0ffe35db92..86d8a9e36005 100644
--- a/drivers/net/ethernet/microsoft/mana/gdma.h
+++ b/drivers/net/ethernet/microsoft/mana/gdma.h
@@ -354,9 +354,11 @@ struct gdma_context {
u32 test_event_eq_id;
bool is_pf;
+ phys_addr_t bar0_pa;
void __iomem *bar0_va;
void __iomem *shm_base;
void __iomem *db_page_base;
+ phys_addr_t phys_db_page_base;
u32 db_page_size;
int numa_node;
diff --git a/drivers/net/ethernet/microsoft/mana/gdma_main.c b/drivers/net/ethernet/microsoft/mana/gdma_main.c
index abe9888a40aa..a00bd88443d3 100644
--- a/drivers/net/ethernet/microsoft/mana/gdma_main.c
+++ b/drivers/net/ethernet/microsoft/mana/gdma_main.c
@@ -44,6 +44,9 @@ static void mana_gd_init_vf_regs(struct pci_dev *pdev)
gc->db_page_base = gc->bar0_va +
mana_gd_r64(gc, GDMA_REG_DB_PAGE_OFFSET);
+ gc->phys_db_page_base = gc->bar0_pa +
+ mana_gd_r64(gc, GDMA_REG_DB_PAGE_OFFSET);
+
gc->shm_base = gc->bar0_va + mana_gd_r64(gc, GDMA_REG_SHM_OFFSET);
}
@@ -1407,6 +1410,7 @@ static int mana_gd_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
mutex_init(&gc->eq_test_event_mutex);
pci_set_drvdata(pdev, gc);
+ gc->bar0_pa = pci_resource_start(pdev, 0);
bar0_va = pci_iomap(pdev, bar, 0);
if (!bar0_va)
--
2.40.1
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