[PATCH 1/2] net: e1000: properly map dma allocations

Denis Orlov denorl2009 at gmail.com
Fri Feb 10 06:39:23 PST 2023


From: Antony Pavlov <antonynpavlov at gmail.com>

Signed-off-by: Antony Pavlov <antonynpavlov at gmail.com>
Signed-off-by: Denis Orlov <denorl2009 at gmail.com>
---
 drivers/net/e1000/e1000.h | 2 ++
 drivers/net/e1000/main.c  | 8 ++++----
 2 files changed, 6 insertions(+), 4 deletions(-)

diff --git a/drivers/net/e1000/e1000.h b/drivers/net/e1000/e1000.h
index 558a4ac271..d440d7540a 100644
--- a/drivers/net/e1000/e1000.h
+++ b/drivers/net/e1000/e1000.h
@@ -2183,7 +2183,9 @@ struct e1000_hw {
 	struct mii_bus miibus;
 
 	struct e1000_tx_desc *tx_base;
+	dma_addr_t tx_base_phys;
 	struct e1000_rx_desc *rx_base;
+	dma_addr_t rx_base_phys;
 	unsigned char *packet;
 	dma_addr_t packet_dma;
 
diff --git a/drivers/net/e1000/main.c b/drivers/net/e1000/main.c
index e00bc48417..c259d72f27 100644
--- a/drivers/net/e1000/main.c
+++ b/drivers/net/e1000/main.c
@@ -3267,7 +3267,7 @@ static void e1000_configure_tx(struct e1000_hw *hw)
 	unsigned long tctl;
 	unsigned long tipg, tarc;
 	uint32_t ipgr1, ipgr2;
-	const unsigned long tx_base = (unsigned long)hw->tx_base;
+	const unsigned long tx_base = (unsigned long)hw->tx_base_phys;
 
 	e1000_write_reg(hw, E1000_TDBAL, lower_32_bits(tx_base));
 	e1000_write_reg(hw, E1000_TDBAH, upper_32_bits(tx_base));
@@ -3386,7 +3386,7 @@ static void e1000_setup_rctl(struct e1000_hw *hw)
 static void e1000_configure_rx(struct e1000_hw *hw)
 {
 	unsigned long rctl, ctrl_ext;
-	const unsigned long rx_base = (unsigned long)hw->rx_base;
+	const unsigned long rx_base = (unsigned long)hw->rx_base_phys;
 
 	hw->rx_tail = 0;
 	/* make sure receives are disabled while setting up the descriptors */
@@ -3595,8 +3595,8 @@ static int e1000_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 
 	hw = xzalloc(sizeof(*hw));
 
-	hw->tx_base = dma_alloc_coherent(16 * sizeof(*hw->tx_base), DMA_ADDRESS_BROKEN);
-	hw->rx_base = dma_alloc_coherent(16 * sizeof(*hw->rx_base), DMA_ADDRESS_BROKEN);
+	hw->tx_base = dma_alloc_coherent(16 * sizeof(*hw->tx_base), &hw->tx_base_phys);
+	hw->rx_base = dma_alloc_coherent(16 * sizeof(*hw->rx_base), &hw->rx_base_phys);
 
 	edev = &hw->edev;
 
-- 
2.30.2




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