iwlwifi: pcie: add 9000 series multi queue rx DMA support
The 9000 series introduces several changes in the device
DMA operation.
As the device now supports multi-queue rx, several DMA channels
should be configured.
The flows of providing the device with the allocated RBDs now
changes as well - the device maintains a separate table of used
and free table.
The hardware may use the free table to feed RBDs to any queue.
This requires maintaing a shared table to map returned RBDs to
the original RXB - for that purpose the VID is introduced - an
internal identifier of the RB placed in the lower 12 bits and
returned by HW in the used data.
Another change is the support of 64 bit DMA address.
Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
diff --git a/drivers/net/wireless/intel/iwlwifi/iwl-fh.h b/drivers/net/wireless/intel/iwlwifi/iwl-fh.h
index 5cc6be92..4ab6682 100644
--- a/drivers/net/wireless/intel/iwlwifi/iwl-fh.h
+++ b/drivers/net/wireless/intel/iwlwifi/iwl-fh.h
@@ -6,6 +6,7 @@
* GPL LICENSE SUMMARY
*
* Copyright(c) 2005 - 2014 Intel Corporation. All rights reserved.
+ * Copyright(c) 2015 Intel Deutschland GmbH
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of version 2 of the GNU General Public License as
@@ -31,6 +32,7 @@
* BSD LICENSE
*
* Copyright(c) 2005 - 2014 Intel Corporation. All rights reserved.
+ * Copyright(c) 2015 Intel Deutschland GmbH
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
@@ -312,6 +314,77 @@
#define FH_MEM_TFDIB_REG1_ADDR_BITSHIFT 28
#define FH_MEM_TB_MAX_LENGTH (0x00020000)
+/* 9000 rx series registers */
+
+#define RFH_Q0_FRBDCB_BA_LSB 0xA08000 /* 64 bit address */
+#define RFH_Q_FRBDCB_BA_LSB(q) (RFH_Q0_FRBDCB_BA_LSB + (q) * 8)
+/* Write index table */
+#define RFH_Q0_FRBDCB_WIDX 0xA08080
+#define RFH_Q_FRBDCB_WIDX(q) (RFH_Q0_FRBDCB_WIDX + (q) * 4)
+/* Read index table */
+#define RFH_Q0_FRBDCB_RIDX 0xA080C0
+#define RFH_Q_FRBDCB_RIDX(q) (RFH_Q0_FRBDCB_RIDX + (q) * 4)
+/* Used list table */
+#define RFH_Q0_URBDCB_BA_LSB 0xA08100 /* 64 bit address */
+#define RFH_Q_URBDCB_BA_LSB(q) (RFH_Q0_URBDCB_BA_LSB + (q) * 8)
+/* Write index table */
+#define RFH_Q0_URBDCB_WIDX 0xA08180
+#define RFH_Q_URBDCB_WIDX(q) (RFH_Q0_URBDCB_WIDX + (q) * 4)
+#define RFH_Q0_URBDCB_VAID 0xA081C0
+#define RFH_Q_URBDCB_VAID(q) (RFH_Q0_URBDCB_VAID + (q) * 4)
+/* stts */
+#define RFH_Q0_URBD_STTS_WPTR_LSB 0xA08200 /*64 bits address */
+#define RFH_Q_URBD_STTS_WPTR_LSB(q) (RFH_Q0_URBD_STTS_WPTR_LSB + (q) * 8)
+
+#define RFH_Q0_ORB_WPTR_LSB 0xA08280
+#define RFH_Q_ORB_WPTR_LSB(q) (RFH_Q0_ORB_WPTR_LSB + (q) * 8)
+#define RFH_RBDBUF_RBD0_LSB 0xA08300
+#define RFH_RBDBUF_RBD_LSB(q) (RFH_RBDBUF_RBD0_LSB + (q) * 8)
+
+/* DMA configuration */
+#define RFH_RXF_DMA_CFG 0xA09820
+/* RB size */
+#define RFH_RXF_DMA_RB_SIZE_MASK (0x000F0000) /* bits 16-19 */
+#define RFH_RXF_DMA_RB_SIZE_POS 16
+#define RFH_RXF_DMA_RB_SIZE_1K (0x1 << RFH_RXF_DMA_RB_SIZE_POS)
+#define RFH_RXF_DMA_RB_SIZE_2K (0x2 << RFH_RXF_DMA_RB_SIZE_POS)
+#define RFH_RXF_DMA_RB_SIZE_4K (0x4 << RFH_RXF_DMA_RB_SIZE_POS)
+#define RFH_RXF_DMA_RB_SIZE_8K (0x8 << RFH_RXF_DMA_RB_SIZE_POS)
+#define RFH_RXF_DMA_RB_SIZE_12K (0x9 << RFH_RXF_DMA_RB_SIZE_POS)
+#define RFH_RXF_DMA_RB_SIZE_16K (0xA << RFH_RXF_DMA_RB_SIZE_POS)
+#define RFH_RXF_DMA_RB_SIZE_20K (0xB << RFH_RXF_DMA_RB_SIZE_POS)
+#define RFH_RXF_DMA_RB_SIZE_24K (0xC << RFH_RXF_DMA_RB_SIZE_POS)
+#define RFH_RXF_DMA_RB_SIZE_28K (0xD << RFH_RXF_DMA_RB_SIZE_POS)
+#define RFH_RXF_DMA_RB_SIZE_32K (0xE << RFH_RXF_DMA_RB_SIZE_POS)
+/* RB Circular Buffer size:defines the table sizes in RBD units */
+#define RFH_RXF_DMA_RBDCB_SIZE_MASK (0x00F00000) /* bits 20-23 */
+#define RFH_RXF_DMA_RBDCB_SIZE_POS 20
+#define RFH_RXF_DMA_RBDCB_SIZE_8 (0x3 << RFH_RXF_DMA_RBDCB_SIZE_POS)
+#define RFH_RXF_DMA_RBDCB_SIZE_16 (0x4 << RFH_RXF_DMA_RBDCB_SIZE_POS)
+#define RFH_RXF_DMA_RBDCB_SIZE_32 (0x5 << RFH_RXF_DMA_RBDCB_SIZE_POS)
+#define RFH_RXF_DMA_RBDCB_SIZE_64 (0x7 << RFH_RXF_DMA_RBDCB_SIZE_POS)
+#define RFH_RXF_DMA_RBDCB_SIZE_128 (0x7 << RFH_RXF_DMA_RBDCB_SIZE_POS)
+#define RFH_RXF_DMA_RBDCB_SIZE_256 (0x8 << RFH_RXF_DMA_RBDCB_SIZE_POS)
+#define RFH_RXF_DMA_RBDCB_SIZE_512 (0x9 << RFH_RXF_DMA_RBDCB_SIZE_POS)
+#define RFH_RXF_DMA_RBDCB_SIZE_1024 (0xA << RFH_RXF_DMA_RBDCB_SIZE_POS)
+#define RFH_RXF_DMA_RBDCB_SIZE_2048 (0xB << RFH_RXF_DMA_RBDCB_SIZE_POS)
+#define RFH_RXF_DMA_MIN_RB_SIZE_MASK (0x03000000) /* bit 24-25 */
+#define RFH_RXF_DMA_MIN_RB_SIZE_POS 24
+#define RFH_RXF_DMA_MIN_RB_4_8 (3 << RFH_RXF_DMA_MIN_RB_SIZE_POS)
+#define RFH_RXF_DMA_SINGLE_FRAME_MASK (0x20000000) /* bit 29 */
+#define RFH_DMA_EN_MASK (0xC0000000) /* bits 30-31*/
+#define RFH_DMA_EN_ENABLE_VAL BIT(31)
+
+#define RFH_RXF_RXQ_ACTIVE 0xA0980C
+
+#define RFH_GEN_CFG 0xA09800
+#define RFH_GEN_CFG_DEFAULT_RXQ_NUM_MASK 0xF00
+#define RFH_GEN_CFG_SERVICE_DMA_SNOOP BIT(0)
+#define RFH_GEN_CFG_RFH_DMA_SNOOP BIT(1)
+#define DEFAULT_RXQ_NUM 8
+
+/* end of 9000 rx series registers */
+
/* TFDB Area - TFDs buffer table */
#define FH_MEM_TFDIB_DRAM_ADDR_LSB_MSK (0xFFFFFFFF)
#define FH_TFDIB_LOWER_BOUND (FH_MEM_LOWER_BOUND + 0x900)
@@ -434,6 +507,10 @@
*/
#define FH_TX_CHICKEN_BITS_SCD_AUTO_RETRY_EN (0x00000002)
+#define MQ_RX_TABLE_SIZE 512
+#define MQ_RX_TABLE_MASK (MQ_RX_TABLE_SIZE - 1)
+#define MQ_RX_POOL_SIZE MQ_RX_TABLE_MASK
+
#define RX_QUEUE_SIZE 256
#define RX_QUEUE_MASK 255
#define RX_QUEUE_SIZE_LOG 8