[rt2x00-users] [PATCH 09/12] rt2x00: WPDMA fix from Alban Browaeys for rt2800pci

[Benoit PAPILLAULT]

I don't know what it does but after applying it, all my freeze and WPDMA not
ready errors disapear.

Signed-off-by: Benoit PAPILLAULT <benoit.papillault at free.fr>
---
 drivers/net/wireless/rt2x00/rt2800pci.c |   40 +++++++++++++++++++++----------
 1 files changed, 27 insertions(+), 13 deletions(-)

diff --git a/drivers/net/wireless/rt2x00/rt2800pci.c b/drivers/net/wireless/rt2x00/rt2800pci.c
index f2fd2fb..ae3c85b 100644
--- a/drivers/net/wireless/rt2x00/rt2800pci.c
+++ b/drivers/net/wireless/rt2x00/rt2800pci.c
@@ -1389,19 +1389,6 @@ static int rt2800pci_init_registers(struct rt2x00_dev *rt2x00dev)
 	u32 reg;
 	unsigned int i;
 
-	rt2x00pci_register_read(rt2x00dev, WPDMA_RST_IDX, &reg);
-	rt2x00_set_field32(&reg, WPDMA_RST_IDX_DTX_IDX0, 1);
-	rt2x00_set_field32(&reg, WPDMA_RST_IDX_DTX_IDX1, 1);
-	rt2x00_set_field32(&reg, WPDMA_RST_IDX_DTX_IDX2, 1);
-	rt2x00_set_field32(&reg, WPDMA_RST_IDX_DTX_IDX3, 1);
-	rt2x00_set_field32(&reg, WPDMA_RST_IDX_DTX_IDX4, 1);
-	rt2x00_set_field32(&reg, WPDMA_RST_IDX_DTX_IDX5, 1);
-	rt2x00_set_field32(&reg, WPDMA_RST_IDX_DRX_IDX0, 1);
-	rt2x00pci_register_write(rt2x00dev, WPDMA_RST_IDX, reg);
-
-	rt2x00pci_register_write(rt2x00dev, PBF_SYS_CTRL, 0x00000e1f);
-	rt2x00pci_register_write(rt2x00dev, PBF_SYS_CTRL, 0x00000e00);
-
 	rt2x00pci_register_write(rt2x00dev, PWR_PIN_CFG, 0x00000003);
 
 	rt2x00pci_register_read(rt2x00dev, MAC_SYS_CTRL, &reg);
@@ -1647,6 +1634,9 @@ static int rt2800pci_init_registers(struct rt2x00_dev *rt2x00dev)
 	rt2x00pci_register_read(rt2x00dev, TX_STA_CNT1, &reg);
 	rt2x00pci_register_read(rt2x00dev, TX_STA_CNT2, &reg);
 
+	rt2x00pci_register_write(rt2x00dev, H2M_MAILBOX_STATUS, ~0);
+	rt2x00pci_register_write(rt2x00dev, H2M_MAILBOX_CID, ~0);
+
 	return 0;
 }
 
@@ -1957,6 +1947,19 @@ static int rt2800pci_enable_radio(struct rt2x00_dev *rt2x00dev)
 	u32 reg;
 	u16 word;
 
+	rt2x00pci_register_read(rt2x00dev, WPDMA_RST_IDX, &reg);
+	rt2x00_set_field32(&reg, WPDMA_RST_IDX_DTX_IDX0, 1);
+	rt2x00_set_field32(&reg, WPDMA_RST_IDX_DTX_IDX1, 1);
+	rt2x00_set_field32(&reg, WPDMA_RST_IDX_DTX_IDX2, 1);
+	rt2x00_set_field32(&reg, WPDMA_RST_IDX_DTX_IDX3, 1);
+	rt2x00_set_field32(&reg, WPDMA_RST_IDX_DTX_IDX4, 1);
+	rt2x00_set_field32(&reg, WPDMA_RST_IDX_DTX_IDX5, 1);
+	rt2x00_set_field32(&reg, WPDMA_RST_IDX_DRX_IDX0, 1);
+	rt2x00pci_register_write(rt2x00dev, WPDMA_RST_IDX, reg);
+
+	rt2x00pci_register_write(rt2x00dev, PBF_SYS_CTRL, 0x00000e1f);
+	rt2x00pci_register_write(rt2x00dev, PBF_SYS_CTRL, 0x00000e00);
+
 	/*
 	 * Initialize all registers.
 	 */
@@ -2030,6 +2033,17 @@ static void rt2800pci_disable_radio(struct rt2x00_dev *rt2x00dev)
 	rt2x00pci_register_write(rt2x00dev, PBF_SYS_CTRL, 0x00001280);
 
 	/* Wait for DMA, ignore error */
+	rt2x00pci_register_read(rt2x00dev, WPDMA_RST_IDX, &reg);
+	rt2x00_set_field32(&reg, WPDMA_RST_IDX_DTX_IDX0, 1);
+	rt2x00_set_field32(&reg, WPDMA_RST_IDX_DTX_IDX1, 1);
+	rt2x00_set_field32(&reg, WPDMA_RST_IDX_DTX_IDX2, 1);
+	rt2x00_set_field32(&reg, WPDMA_RST_IDX_DTX_IDX3, 1);
+	rt2x00_set_field32(&reg, WPDMA_RST_IDX_DTX_IDX4, 1);
+	rt2x00_set_field32(&reg, WPDMA_RST_IDX_DTX_IDX5, 1);
+	rt2x00_set_field32(&reg, WPDMA_RST_IDX_DRX_IDX0, 1);
+	rt2x00pci_register_write(rt2x00dev, WPDMA_RST_IDX, reg);
+	rt2x00pci_register_write(rt2x00dev, PBF_SYS_CTRL, 0x00000e1f);
+	rt2x00pci_register_write(rt2x00dev, PBF_SYS_CTRL, 0x00000e00);
 	rt2800pci_wait_wpdma_ready(rt2x00dev);
 }
 
-- 
1.6.2.4