2 * Copyright (c) 2004-2011 Atheros Communications Inc.
3 * Copyright (c) 2011-2012 Qualcomm Atheros, Inc.
4 * Copyright (c) 2016-2017 Erik Stromdahl <erik.stromdahl@gmail.com>
6 * Permission to use, copy, modify, and/or distribute this software for any
7 * purpose with or without fee is hereby granted, provided that the above
8 * copyright notice and this permission notice appear in all copies.
10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
22 #define ATH10K_HIF_MBOX_BLOCK_SIZE 256
24 #define QCA_MANUFACTURER_ID_BASE GENMASK(11, 8)
25 #define QCA_MANUFACTURER_ID_AR6005_BASE 0x5
26 #define QCA_MANUFACTURER_ID_QCA9377_BASE 0x7
27 #define QCA_SDIO_ID_AR6005_BASE 0x500
28 #define QCA_SDIO_ID_QCA9377_BASE 0x700
29 #define QCA_MANUFACTURER_ID_REV_MASK 0x00FF
30 #define QCA_MANUFACTURER_CODE 0x271 /* Qualcomm/Atheros */
32 #define ATH10K_SDIO_MAX_BUFFER_SIZE 4096 /*Unsure of this constant*/
34 /* Mailbox address in SDIO address space */
35 #define ATH10K_HIF_MBOX_BASE_ADDR 0x1000
36 #define ATH10K_HIF_MBOX_WIDTH 0x800
38 #define ATH10K_HIF_MBOX_TOT_WIDTH \
39 (ATH10K_HIF_MBOX_NUM_MAX * ATH10K_HIF_MBOX_WIDTH)
41 #define ATH10K_HIF_MBOX0_EXT_BASE_ADDR 0x5000
42 #define ATH10K_HIF_MBOX0_EXT_WIDTH (36 * 1024)
43 #define ATH10K_HIF_MBOX0_EXT_WIDTH_ROME_2_0 (56 * 1024)
44 #define ATH10K_HIF_MBOX1_EXT_WIDTH (36 * 1024)
45 #define ATH10K_HIF_MBOX_DUMMY_SPACE_SIZE (2 * 1024)
47 #define ATH10K_HTC_MBOX_MAX_PAYLOAD_LENGTH \
48 (ATH10K_SDIO_MAX_BUFFER_SIZE - sizeof(struct ath10k_htc_hdr))
50 #define ATH10K_HIF_MBOX_NUM_MAX 4
51 #define ATH10K_SDIO_BUS_REQUEST_MAX_NUM 64
53 #define ATH10K_SDIO_HIF_COMMUNICATION_TIMEOUT_HZ (100 * HZ)
55 /* HTC runs over mailbox 0 */
56 #define ATH10K_HTC_MAILBOX 0
57 #define ATH10K_HTC_MAILBOX_MASK BIT(ATH10K_HTC_MAILBOX)
60 #define ATH10K_HIF_GMBOX_BASE_ADDR 0x7000
61 #define ATH10K_HIF_GMBOX_WIDTH 0x4000
63 /* Modified versions of the sdio.h macros.
64 * The macros in sdio.h can't be used easily with the FIELD_{PREP|GET}
65 * macros in bitfield.h, so we define our own macros here.
67 #define ATH10K_SDIO_DRIVE_DTSX_MASK \
68 (SDIO_DRIVE_DTSx_MASK << SDIO_DRIVE_DTSx_SHIFT)
70 #define ATH10K_SDIO_DRIVE_DTSX_TYPE_B 0
71 #define ATH10K_SDIO_DRIVE_DTSX_TYPE_A 1
72 #define ATH10K_SDIO_DRIVE_DTSX_TYPE_C 2
73 #define ATH10K_SDIO_DRIVE_DTSX_TYPE_D 3
75 /* SDIO CCCR register definitions */
76 #define CCCR_SDIO_IRQ_MODE_REG 0xF0
77 #define CCCR_SDIO_IRQ_MODE_REG_SDIO3 0x16
79 #define CCCR_SDIO_DRIVER_STRENGTH_ENABLE_ADDR 0xF2
81 #define CCCR_SDIO_DRIVER_STRENGTH_ENABLE_A 0x02
82 #define CCCR_SDIO_DRIVER_STRENGTH_ENABLE_C 0x04
83 #define CCCR_SDIO_DRIVER_STRENGTH_ENABLE_D 0x08
85 #define CCCR_SDIO_ASYNC_INT_DELAY_ADDRESS 0xF0
86 #define CCCR_SDIO_ASYNC_INT_DELAY_MASK 0xC0
88 /* mode to enable special 4-bit interrupt assertion without clock */
89 #define SDIO_IRQ_MODE_ASYNC_4BIT_IRQ BIT(0)
90 #define SDIO_IRQ_MODE_ASYNC_4BIT_IRQ_SDIO3 BIT(1)
92 #define ATH10K_SDIO_TARGET_DEBUG_INTR_MASK 0x01
94 /* The theoretical maximum number of RX messages that can be fetched
95 * from the mbox interrupt handler in one loop is derived in the following
98 * Let's assume that each packet in a bundle of the maximum bundle size
99 * (HTC_HOST_MAX_MSG_PER_RX_BUNDLE) has the HTC header bundle count set
100 * to the maximum value (HTC_HOST_MAX_MSG_PER_RX_BUNDLE).
102 * in this case the driver must allocate
103 * (HTC_HOST_MAX_MSG_PER_RX_BUNDLE * HTC_HOST_MAX_MSG_PER_RX_BUNDLE) skb's.
105 #define ATH10K_SDIO_MAX_RX_MSGS \
106 (HTC_HOST_MAX_MSG_PER_RX_BUNDLE * HTC_HOST_MAX_MSG_PER_RX_BUNDLE)
108 #define ATH10K_FIFO_TIMEOUT_AND_CHIP_CONTROL 0x00000868u
109 #define ATH10K_FIFO_TIMEOUT_AND_CHIP_CONTROL_DISABLE_SLEEP_OFF 0xFFFEFFFF
110 #define ATH10K_FIFO_TIMEOUT_AND_CHIP_CONTROL_DISABLE_SLEEP_ON 0x10000
112 struct ath10k_sdio_bus_request {
113 struct list_head list;
119 enum ath10k_htc_ep_id eid;
121 /* Specifies if the current request is an HTC message.
122 * If not, the eid is not applicable an the TX completion handler
123 * associated with the endpoint will not be invoked.
126 /* Completion that (if set) will be invoked for non HTC requests
127 * (htc_msg == false) when the request has been processed.
129 struct completion *comp;
132 struct ath10k_sdio_rx_data {
136 enum ath10k_htc_ep_id eid;
143 struct ath10k_sdio_irq_proc_regs {
147 u8 counter_int_status;
149 u8 rx_lookahead_valid;
152 __le32 rx_lookahead[2];
153 __le32 rx_gmbox_lookahead_alias[2];
156 struct ath10k_sdio_irq_enable_regs {
158 u8 cpu_int_status_en;
159 u8 err_int_status_en;
160 u8 cntr_int_status_en;
163 struct ath10k_sdio_irq_data {
164 /* protects irq_proc_reg and irq_en_reg below.
165 * We use a mutex here and not a spinlock since we will have the
166 * mutex locked while calling the sdio_memcpy_ functions.
167 * These function require non atomic context, and hence, spinlocks
168 * can be held while calling these functions.
171 struct ath10k_sdio_irq_proc_regs *irq_proc_reg;
172 struct ath10k_sdio_irq_enable_regs *irq_en_reg;
175 struct ath10k_mbox_ext_info {
180 struct ath10k_mbox_info {
182 struct ath10k_mbox_ext_info ext_info[2];
190 struct sdio_func *func;
192 struct ath10k_mbox_info mbox_info;
194 u32 mbox_addr[ATH10K_HTC_EP_COUNT];
195 u32 mbox_size[ATH10K_HTC_EP_COUNT];
197 /* available bus requests */
198 struct ath10k_sdio_bus_request bus_req[ATH10K_SDIO_BUS_REQUEST_MAX_NUM];
199 /* free list of bus requests */
200 struct list_head bus_req_freeq;
201 /* protects access to bus_req_freeq */
204 struct ath10k_sdio_rx_data rx_pkts[ATH10K_SDIO_MAX_RX_MSGS];
208 struct ath10k_sdio_irq_data irq_data;
210 /* temporary buffer for BMI requests */
215 struct workqueue_struct *workqueue;
216 struct work_struct wr_async_work;
217 struct list_head wr_asyncq;
218 /* protects access to wr_asyncq */
219 spinlock_t wr_async_lock;
222 static inline struct ath10k_sdio *ath10k_sdio_priv(struct ath10k *ar)
224 return (struct ath10k_sdio *)ar->drv_priv;