Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1 | /* |
| 2 | * Driver for the NXP ISP1760 chip |
| 3 | * |
| 4 | * However, the code might contain some bugs. What doesn't work for sure is: |
| 5 | * - ISO |
| 6 | * - OTG |
| 7 | e The interrupt line is configured as active low, level. |
| 8 | * |
| 9 | * (c) 2007 Sebastian Siewior <bigeasy@linutronix.de> |
| 10 | * |
Arvid Brodin | 71a9f9d | 2011-04-26 21:48:30 +0200 | [diff] [blame] | 11 | * (c) 2011 Arvid Brodin <arvid.brodin@enea.com> |
| 12 | * |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 13 | */ |
Laurent Pinchart | 7eb42c6 | 2015-01-21 00:55:40 +0200 | [diff] [blame] | 14 | #include <linux/gpio/consumer.h> |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 15 | #include <linux/module.h> |
| 16 | #include <linux/kernel.h> |
| 17 | #include <linux/slab.h> |
| 18 | #include <linux/list.h> |
| 19 | #include <linux/usb.h> |
Eric Lescouet | 27729aa | 2010-04-24 23:21:52 +0200 | [diff] [blame] | 20 | #include <linux/usb/hcd.h> |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 21 | #include <linux/debugfs.h> |
| 22 | #include <linux/uaccess.h> |
| 23 | #include <linux/io.h> |
Catalin Marinas | db8516f | 2010-02-02 15:31:02 +0000 | [diff] [blame] | 24 | #include <linux/mm.h> |
Arvid Brodin | 6d50c60 | 2011-08-21 08:29:26 +0200 | [diff] [blame] | 25 | #include <linux/timer.h> |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 26 | #include <asm/unaligned.h> |
Catalin Marinas | db8516f | 2010-02-02 15:31:02 +0000 | [diff] [blame] | 27 | #include <asm/cacheflush.h> |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 28 | |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 29 | #include "isp1760-hcd.h" |
Laurent Pinchart | e19c99e | 2015-01-21 00:55:56 +0200 | [diff] [blame^] | 30 | #include "isp1760-regs.h" |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 31 | |
| 32 | static struct kmem_cache *qtd_cachep; |
| 33 | static struct kmem_cache *qh_cachep; |
Arvid Brodin | 71a9f9d | 2011-04-26 21:48:30 +0200 | [diff] [blame] | 34 | static struct kmem_cache *urb_listitem_cachep; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 35 | |
Laurent Pinchart | f0bdbb0 | 2015-01-21 00:55:47 +0200 | [diff] [blame] | 36 | typedef void (packet_enqueue)(struct usb_hcd *hcd, struct isp1760_qh *qh, |
| 37 | struct isp1760_qtd *qtd); |
| 38 | |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 39 | static inline struct isp1760_hcd *hcd_to_priv(struct usb_hcd *hcd) |
| 40 | { |
Laurent Pinchart | cdd36e8 | 2015-01-21 00:55:54 +0200 | [diff] [blame] | 41 | return *(struct isp1760_hcd **)hcd->hcd_priv; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 42 | } |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 43 | |
Laurent Pinchart | e19c99e | 2015-01-21 00:55:56 +0200 | [diff] [blame^] | 44 | /* urb state*/ |
| 45 | #define DELETE_URB (0x0008) |
| 46 | #define NO_TRANSFER_ACTIVE (0xffffffff) |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 47 | |
Laurent Pinchart | e19c99e | 2015-01-21 00:55:56 +0200 | [diff] [blame^] | 48 | /* Philips Proprietary Transfer Descriptor (PTD) */ |
| 49 | typedef __u32 __bitwise __dw; |
| 50 | struct ptd { |
| 51 | __dw dw0; |
| 52 | __dw dw1; |
| 53 | __dw dw2; |
| 54 | __dw dw3; |
| 55 | __dw dw4; |
| 56 | __dw dw5; |
| 57 | __dw dw6; |
| 58 | __dw dw7; |
| 59 | }; |
| 60 | #define PTD_OFFSET 0x0400 |
| 61 | #define ISO_PTD_OFFSET 0x0400 |
| 62 | #define INT_PTD_OFFSET 0x0800 |
| 63 | #define ATL_PTD_OFFSET 0x0c00 |
| 64 | #define PAYLOAD_OFFSET 0x1000 |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 65 | |
Laurent Pinchart | e19c99e | 2015-01-21 00:55:56 +0200 | [diff] [blame^] | 66 | |
| 67 | /* ATL */ |
| 68 | /* DW0 */ |
| 69 | #define DW0_VALID_BIT 1 |
| 70 | #define FROM_DW0_VALID(x) ((x) & 0x01) |
| 71 | #define TO_DW0_LENGTH(x) (((u32) x) << 3) |
| 72 | #define TO_DW0_MAXPACKET(x) (((u32) x) << 18) |
| 73 | #define TO_DW0_MULTI(x) (((u32) x) << 29) |
| 74 | #define TO_DW0_ENDPOINT(x) (((u32) x) << 31) |
| 75 | /* DW1 */ |
| 76 | #define TO_DW1_DEVICE_ADDR(x) (((u32) x) << 3) |
| 77 | #define TO_DW1_PID_TOKEN(x) (((u32) x) << 10) |
| 78 | #define DW1_TRANS_BULK ((u32) 2 << 12) |
| 79 | #define DW1_TRANS_INT ((u32) 3 << 12) |
| 80 | #define DW1_TRANS_SPLIT ((u32) 1 << 14) |
| 81 | #define DW1_SE_USB_LOSPEED ((u32) 2 << 16) |
| 82 | #define TO_DW1_PORT_NUM(x) (((u32) x) << 18) |
| 83 | #define TO_DW1_HUB_NUM(x) (((u32) x) << 25) |
| 84 | /* DW2 */ |
| 85 | #define TO_DW2_DATA_START_ADDR(x) (((u32) x) << 8) |
| 86 | #define TO_DW2_RL(x) ((x) << 25) |
| 87 | #define FROM_DW2_RL(x) (((x) >> 25) & 0xf) |
| 88 | /* DW3 */ |
| 89 | #define FROM_DW3_NRBYTESTRANSFERRED(x) ((x) & 0x7fff) |
| 90 | #define FROM_DW3_SCS_NRBYTESTRANSFERRED(x) ((x) & 0x07ff) |
| 91 | #define TO_DW3_NAKCOUNT(x) ((x) << 19) |
| 92 | #define FROM_DW3_NAKCOUNT(x) (((x) >> 19) & 0xf) |
| 93 | #define TO_DW3_CERR(x) ((x) << 23) |
| 94 | #define FROM_DW3_CERR(x) (((x) >> 23) & 0x3) |
| 95 | #define TO_DW3_DATA_TOGGLE(x) ((x) << 25) |
| 96 | #define FROM_DW3_DATA_TOGGLE(x) (((x) >> 25) & 0x1) |
| 97 | #define TO_DW3_PING(x) ((x) << 26) |
| 98 | #define FROM_DW3_PING(x) (((x) >> 26) & 0x1) |
| 99 | #define DW3_ERROR_BIT (1 << 28) |
| 100 | #define DW3_BABBLE_BIT (1 << 29) |
| 101 | #define DW3_HALT_BIT (1 << 30) |
| 102 | #define DW3_ACTIVE_BIT (1 << 31) |
| 103 | #define FROM_DW3_ACTIVE(x) (((x) >> 31) & 0x01) |
| 104 | |
| 105 | #define INT_UNDERRUN (1 << 2) |
| 106 | #define INT_BABBLE (1 << 1) |
| 107 | #define INT_EXACT (1 << 0) |
| 108 | |
| 109 | #define SETUP_PID (2) |
| 110 | #define IN_PID (1) |
| 111 | #define OUT_PID (0) |
| 112 | |
| 113 | /* Errata 1 */ |
| 114 | #define RL_COUNTER (0) |
| 115 | #define NAK_COUNTER (0) |
| 116 | #define ERR_COUNTER (2) |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 117 | |
| 118 | struct isp1760_qtd { |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 119 | u8 packet_type; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 120 | void *data_buffer; |
Arvid Brodin | a041d8e | 2011-02-26 22:04:40 +0100 | [diff] [blame] | 121 | u32 payload_addr; |
| 122 | |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 123 | /* the rest is HCD-private */ |
| 124 | struct list_head qtd_list; |
| 125 | struct urb *urb; |
| 126 | size_t length; |
Arvid Brodin | 71a9f9d | 2011-04-26 21:48:30 +0200 | [diff] [blame] | 127 | size_t actual_length; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 128 | |
Arvid Brodin | 71a9f9d | 2011-04-26 21:48:30 +0200 | [diff] [blame] | 129 | /* QTD_ENQUEUED: waiting for transfer (inactive) */ |
| 130 | /* QTD_PAYLOAD_ALLOC: chip mem has been allocated for payload */ |
| 131 | /* QTD_XFER_STARTED: valid ptd has been written to isp176x - only |
| 132 | interrupt handler may touch this qtd! */ |
| 133 | /* QTD_XFER_COMPLETE: payload has been transferred successfully */ |
| 134 | /* QTD_RETIRE: transfer error/abort qtd */ |
| 135 | #define QTD_ENQUEUED 0 |
| 136 | #define QTD_PAYLOAD_ALLOC 1 |
| 137 | #define QTD_XFER_STARTED 2 |
| 138 | #define QTD_XFER_COMPLETE 3 |
| 139 | #define QTD_RETIRE 4 |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 140 | u32 status; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 141 | }; |
| 142 | |
Arvid Brodin | 71a9f9d | 2011-04-26 21:48:30 +0200 | [diff] [blame] | 143 | /* Queue head, one for each active endpoint */ |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 144 | struct isp1760_qh { |
Arvid Brodin | 71a9f9d | 2011-04-26 21:48:30 +0200 | [diff] [blame] | 145 | struct list_head qh_list; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 146 | struct list_head qtd_list; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 147 | u32 toggle; |
| 148 | u32 ping; |
Arvid Brodin | 71a9f9d | 2011-04-26 21:48:30 +0200 | [diff] [blame] | 149 | int slot; |
Arvid Brodin | 74ad602 | 2011-08-23 01:25:30 +0200 | [diff] [blame] | 150 | int tt_buffer_dirty; /* See USB2.0 spec section 11.17.5 */ |
Arvid Brodin | 71a9f9d | 2011-04-26 21:48:30 +0200 | [diff] [blame] | 151 | }; |
| 152 | |
| 153 | struct urb_listitem { |
| 154 | struct list_head urb_list; |
| 155 | struct urb *urb; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 156 | }; |
| 157 | |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 158 | /* |
| 159 | * Access functions for isp176x registers (addresses 0..0x03FF). |
| 160 | */ |
| 161 | static u32 reg_read32(void __iomem *base, u32 reg) |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 162 | { |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 163 | return readl(base + reg); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 164 | } |
| 165 | |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 166 | static void reg_write32(void __iomem *base, u32 reg, u32 val) |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 167 | { |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 168 | writel(val, base + reg); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 169 | } |
| 170 | |
| 171 | /* |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 172 | * Access functions for isp176x memory (offset >= 0x0400). |
| 173 | * |
| 174 | * bank_reads8() reads memory locations prefetched by an earlier write to |
| 175 | * HC_MEMORY_REG (see isp176x datasheet). Unless you want to do fancy multi- |
| 176 | * bank optimizations, you should use the more generic mem_reads8() below. |
| 177 | * |
| 178 | * For access to ptd memory, use the specialized ptd_read() and ptd_write() |
| 179 | * below. |
| 180 | * |
| 181 | * These functions copy via MMIO data to/from the device. memcpy_{to|from}io() |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 182 | * doesn't quite work because some people have to enforce 32-bit access |
| 183 | */ |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 184 | static void bank_reads8(void __iomem *src_base, u32 src_offset, u32 bank_addr, |
| 185 | __u32 *dst, u32 bytes) |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 186 | { |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 187 | __u32 __iomem *src; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 188 | u32 val; |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 189 | __u8 *src_byteptr; |
| 190 | __u8 *dst_byteptr; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 191 | |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 192 | src = src_base + (bank_addr | src_offset); |
| 193 | |
| 194 | if (src_offset < PAYLOAD_OFFSET) { |
| 195 | while (bytes >= 4) { |
| 196 | *dst = le32_to_cpu(__raw_readl(src)); |
| 197 | bytes -= 4; |
| 198 | src++; |
| 199 | dst++; |
| 200 | } |
| 201 | } else { |
| 202 | while (bytes >= 4) { |
| 203 | *dst = __raw_readl(src); |
| 204 | bytes -= 4; |
| 205 | src++; |
| 206 | dst++; |
| 207 | } |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 208 | } |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 209 | |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 210 | if (!bytes) |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 211 | return; |
| 212 | |
| 213 | /* in case we have 3, 2 or 1 by left. The dst buffer may not be fully |
| 214 | * allocated. |
| 215 | */ |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 216 | if (src_offset < PAYLOAD_OFFSET) |
| 217 | val = le32_to_cpu(__raw_readl(src)); |
| 218 | else |
| 219 | val = __raw_readl(src); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 220 | |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 221 | dst_byteptr = (void *) dst; |
| 222 | src_byteptr = (void *) &val; |
| 223 | while (bytes > 0) { |
| 224 | *dst_byteptr = *src_byteptr; |
| 225 | dst_byteptr++; |
| 226 | src_byteptr++; |
| 227 | bytes--; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 228 | } |
| 229 | } |
| 230 | |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 231 | static void mem_reads8(void __iomem *src_base, u32 src_offset, void *dst, |
| 232 | u32 bytes) |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 233 | { |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 234 | reg_write32(src_base, HC_MEMORY_REG, src_offset + ISP_BANK(0)); |
| 235 | ndelay(90); |
| 236 | bank_reads8(src_base, src_offset, ISP_BANK(0), dst, bytes); |
| 237 | } |
| 238 | |
| 239 | static void mem_writes8(void __iomem *dst_base, u32 dst_offset, |
| 240 | __u32 const *src, u32 bytes) |
| 241 | { |
| 242 | __u32 __iomem *dst; |
| 243 | |
| 244 | dst = dst_base + dst_offset; |
| 245 | |
| 246 | if (dst_offset < PAYLOAD_OFFSET) { |
| 247 | while (bytes >= 4) { |
| 248 | __raw_writel(cpu_to_le32(*src), dst); |
| 249 | bytes -= 4; |
| 250 | src++; |
| 251 | dst++; |
| 252 | } |
| 253 | } else { |
| 254 | while (bytes >= 4) { |
| 255 | __raw_writel(*src, dst); |
| 256 | bytes -= 4; |
| 257 | src++; |
| 258 | dst++; |
| 259 | } |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 260 | } |
| 261 | |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 262 | if (!bytes) |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 263 | return; |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 264 | /* in case we have 3, 2 or 1 bytes left. The buffer is allocated and the |
| 265 | * extra bytes should not be read by the HW. |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 266 | */ |
| 267 | |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 268 | if (dst_offset < PAYLOAD_OFFSET) |
| 269 | __raw_writel(cpu_to_le32(*src), dst); |
| 270 | else |
| 271 | __raw_writel(*src, dst); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 272 | } |
| 273 | |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 274 | /* |
| 275 | * Read and write ptds. 'ptd_offset' should be one of ISO_PTD_OFFSET, |
| 276 | * INT_PTD_OFFSET, and ATL_PTD_OFFSET. 'slot' should be less than 32. |
| 277 | */ |
| 278 | static void ptd_read(void __iomem *base, u32 ptd_offset, u32 slot, |
| 279 | struct ptd *ptd) |
| 280 | { |
| 281 | reg_write32(base, HC_MEMORY_REG, |
| 282 | ISP_BANK(0) + ptd_offset + slot*sizeof(*ptd)); |
| 283 | ndelay(90); |
| 284 | bank_reads8(base, ptd_offset + slot*sizeof(*ptd), ISP_BANK(0), |
| 285 | (void *) ptd, sizeof(*ptd)); |
| 286 | } |
| 287 | |
| 288 | static void ptd_write(void __iomem *base, u32 ptd_offset, u32 slot, |
| 289 | struct ptd *ptd) |
| 290 | { |
| 291 | mem_writes8(base, ptd_offset + slot*sizeof(*ptd) + sizeof(ptd->dw0), |
| 292 | &ptd->dw1, 7*sizeof(ptd->dw1)); |
| 293 | /* Make sure dw0 gets written last (after other dw's and after payload) |
| 294 | since it contains the enable bit */ |
| 295 | wmb(); |
| 296 | mem_writes8(base, ptd_offset + slot*sizeof(*ptd), &ptd->dw0, |
| 297 | sizeof(ptd->dw0)); |
| 298 | } |
| 299 | |
| 300 | |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 301 | /* memory management of the 60kb on the chip from 0x1000 to 0xffff */ |
| 302 | static void init_memory(struct isp1760_hcd *priv) |
| 303 | { |
Arvid Brodin | a041d8e | 2011-02-26 22:04:40 +0100 | [diff] [blame] | 304 | int i, curr; |
| 305 | u32 payload_addr; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 306 | |
Arvid Brodin | a041d8e | 2011-02-26 22:04:40 +0100 | [diff] [blame] | 307 | payload_addr = PAYLOAD_OFFSET; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 308 | for (i = 0; i < BLOCK_1_NUM; i++) { |
Arvid Brodin | a041d8e | 2011-02-26 22:04:40 +0100 | [diff] [blame] | 309 | priv->memory_pool[i].start = payload_addr; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 310 | priv->memory_pool[i].size = BLOCK_1_SIZE; |
| 311 | priv->memory_pool[i].free = 1; |
Arvid Brodin | a041d8e | 2011-02-26 22:04:40 +0100 | [diff] [blame] | 312 | payload_addr += priv->memory_pool[i].size; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 313 | } |
| 314 | |
Arvid Brodin | a041d8e | 2011-02-26 22:04:40 +0100 | [diff] [blame] | 315 | curr = i; |
| 316 | for (i = 0; i < BLOCK_2_NUM; i++) { |
| 317 | priv->memory_pool[curr + i].start = payload_addr; |
| 318 | priv->memory_pool[curr + i].size = BLOCK_2_SIZE; |
| 319 | priv->memory_pool[curr + i].free = 1; |
| 320 | payload_addr += priv->memory_pool[curr + i].size; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 321 | } |
| 322 | |
Arvid Brodin | a041d8e | 2011-02-26 22:04:40 +0100 | [diff] [blame] | 323 | curr = i; |
| 324 | for (i = 0; i < BLOCK_3_NUM; i++) { |
| 325 | priv->memory_pool[curr + i].start = payload_addr; |
| 326 | priv->memory_pool[curr + i].size = BLOCK_3_SIZE; |
| 327 | priv->memory_pool[curr + i].free = 1; |
| 328 | payload_addr += priv->memory_pool[curr + i].size; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 329 | } |
| 330 | |
Arvid Brodin | 3453773 | 2011-04-26 21:47:37 +0200 | [diff] [blame] | 331 | WARN_ON(payload_addr - priv->memory_pool[0].start > PAYLOAD_AREA_SIZE); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 332 | } |
| 333 | |
Arvid Brodin | 6bda21b | 2011-02-26 22:06:37 +0100 | [diff] [blame] | 334 | static void alloc_mem(struct usb_hcd *hcd, struct isp1760_qtd *qtd) |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 335 | { |
Arvid Brodin | 6bda21b | 2011-02-26 22:06:37 +0100 | [diff] [blame] | 336 | struct isp1760_hcd *priv = hcd_to_priv(hcd); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 337 | int i; |
| 338 | |
Arvid Brodin | 3453773 | 2011-04-26 21:47:37 +0200 | [diff] [blame] | 339 | WARN_ON(qtd->payload_addr); |
Arvid Brodin | a041d8e | 2011-02-26 22:04:40 +0100 | [diff] [blame] | 340 | |
| 341 | if (!qtd->length) |
| 342 | return; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 343 | |
| 344 | for (i = 0; i < BLOCKS; i++) { |
Arvid Brodin | a041d8e | 2011-02-26 22:04:40 +0100 | [diff] [blame] | 345 | if (priv->memory_pool[i].size >= qtd->length && |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 346 | priv->memory_pool[i].free) { |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 347 | priv->memory_pool[i].free = 0; |
Arvid Brodin | a041d8e | 2011-02-26 22:04:40 +0100 | [diff] [blame] | 348 | qtd->payload_addr = priv->memory_pool[i].start; |
| 349 | return; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 350 | } |
| 351 | } |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 352 | } |
| 353 | |
Arvid Brodin | 6bda21b | 2011-02-26 22:06:37 +0100 | [diff] [blame] | 354 | static void free_mem(struct usb_hcd *hcd, struct isp1760_qtd *qtd) |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 355 | { |
Arvid Brodin | 6bda21b | 2011-02-26 22:06:37 +0100 | [diff] [blame] | 356 | struct isp1760_hcd *priv = hcd_to_priv(hcd); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 357 | int i; |
| 358 | |
Arvid Brodin | a041d8e | 2011-02-26 22:04:40 +0100 | [diff] [blame] | 359 | if (!qtd->payload_addr) |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 360 | return; |
| 361 | |
| 362 | for (i = 0; i < BLOCKS; i++) { |
Arvid Brodin | a041d8e | 2011-02-26 22:04:40 +0100 | [diff] [blame] | 363 | if (priv->memory_pool[i].start == qtd->payload_addr) { |
Arvid Brodin | 3453773 | 2011-04-26 21:47:37 +0200 | [diff] [blame] | 364 | WARN_ON(priv->memory_pool[i].free); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 365 | priv->memory_pool[i].free = 1; |
Arvid Brodin | a041d8e | 2011-02-26 22:04:40 +0100 | [diff] [blame] | 366 | qtd->payload_addr = 0; |
| 367 | return; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 368 | } |
| 369 | } |
| 370 | |
Arvid Brodin | 6bda21b | 2011-02-26 22:06:37 +0100 | [diff] [blame] | 371 | dev_err(hcd->self.controller, "%s: Invalid pointer: %08x\n", |
| 372 | __func__, qtd->payload_addr); |
Arvid Brodin | 71a9f9d | 2011-04-26 21:48:30 +0200 | [diff] [blame] | 373 | WARN_ON(1); |
| 374 | qtd->payload_addr = 0; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 375 | } |
| 376 | |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 377 | static int handshake(struct usb_hcd *hcd, u32 reg, |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 378 | u32 mask, u32 done, int usec) |
| 379 | { |
| 380 | u32 result; |
| 381 | |
| 382 | do { |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 383 | result = reg_read32(hcd->regs, reg); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 384 | if (result == ~0) |
| 385 | return -ENODEV; |
| 386 | result &= mask; |
| 387 | if (result == done) |
| 388 | return 0; |
| 389 | udelay(1); |
| 390 | usec--; |
| 391 | } while (usec > 0); |
| 392 | return -ETIMEDOUT; |
| 393 | } |
| 394 | |
| 395 | /* reset a non-running (STS_HALT == 1) controller */ |
Arvid Brodin | 6bda21b | 2011-02-26 22:06:37 +0100 | [diff] [blame] | 396 | static int ehci_reset(struct usb_hcd *hcd) |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 397 | { |
| 398 | int retval; |
Arvid Brodin | 6bda21b | 2011-02-26 22:06:37 +0100 | [diff] [blame] | 399 | struct isp1760_hcd *priv = hcd_to_priv(hcd); |
| 400 | |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 401 | u32 command = reg_read32(hcd->regs, HC_USBCMD); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 402 | |
| 403 | command |= CMD_RESET; |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 404 | reg_write32(hcd->regs, HC_USBCMD, command); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 405 | hcd->state = HC_STATE_HALT; |
| 406 | priv->next_statechange = jiffies; |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 407 | retval = handshake(hcd, HC_USBCMD, |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 408 | CMD_RESET, 0, 250 * 1000); |
| 409 | return retval; |
| 410 | } |
| 411 | |
Arvid Brodin | 71a9f9d | 2011-04-26 21:48:30 +0200 | [diff] [blame] | 412 | static struct isp1760_qh *qh_alloc(gfp_t flags) |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 413 | { |
| 414 | struct isp1760_qh *qh; |
| 415 | |
| 416 | qh = kmem_cache_zalloc(qh_cachep, flags); |
| 417 | if (!qh) |
Arvid Brodin | 71a9f9d | 2011-04-26 21:48:30 +0200 | [diff] [blame] | 418 | return NULL; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 419 | |
Arvid Brodin | 71a9f9d | 2011-04-26 21:48:30 +0200 | [diff] [blame] | 420 | INIT_LIST_HEAD(&qh->qh_list); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 421 | INIT_LIST_HEAD(&qh->qtd_list); |
Arvid Brodin | 71a9f9d | 2011-04-26 21:48:30 +0200 | [diff] [blame] | 422 | qh->slot = -1; |
| 423 | |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 424 | return qh; |
| 425 | } |
| 426 | |
Arvid Brodin | 71a9f9d | 2011-04-26 21:48:30 +0200 | [diff] [blame] | 427 | static void qh_free(struct isp1760_qh *qh) |
| 428 | { |
| 429 | WARN_ON(!list_empty(&qh->qtd_list)); |
| 430 | WARN_ON(qh->slot > -1); |
| 431 | kmem_cache_free(qh_cachep, qh); |
| 432 | } |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 433 | |
| 434 | /* one-time init, only for memory state */ |
| 435 | static int priv_init(struct usb_hcd *hcd) |
| 436 | { |
| 437 | struct isp1760_hcd *priv = hcd_to_priv(hcd); |
| 438 | u32 hcc_params; |
Arvid Brodin | e08f6a27 | 2011-11-23 18:10:41 +0100 | [diff] [blame] | 439 | int i; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 440 | |
| 441 | spin_lock_init(&priv->lock); |
| 442 | |
Arvid Brodin | e08f6a27 | 2011-11-23 18:10:41 +0100 | [diff] [blame] | 443 | for (i = 0; i < QH_END; i++) |
| 444 | INIT_LIST_HEAD(&priv->qh_list[i]); |
Arvid Brodin | 71a9f9d | 2011-04-26 21:48:30 +0200 | [diff] [blame] | 445 | |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 446 | /* |
| 447 | * hw default: 1K periodic list heads, one per frame. |
| 448 | * periodic_size can shrink by USBCMD update if hcc_params allows. |
| 449 | */ |
| 450 | priv->periodic_size = DEFAULT_I_TDPS; |
| 451 | |
| 452 | /* controllers may cache some of the periodic schedule ... */ |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 453 | hcc_params = reg_read32(hcd->regs, HC_HCCPARAMS); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 454 | /* full frame cache */ |
| 455 | if (HCC_ISOC_CACHE(hcc_params)) |
| 456 | priv->i_thresh = 8; |
| 457 | else /* N microframes cached */ |
| 458 | priv->i_thresh = 2 + HCC_ISOC_THRES(hcc_params); |
| 459 | |
| 460 | return 0; |
| 461 | } |
| 462 | |
| 463 | static int isp1760_hc_setup(struct usb_hcd *hcd) |
| 464 | { |
| 465 | struct isp1760_hcd *priv = hcd_to_priv(hcd); |
| 466 | int result; |
Nate Case | 3faefc8 | 2008-06-17 11:11:38 -0500 | [diff] [blame] | 467 | u32 scratch, hwmode; |
| 468 | |
Joachim Foerster | 3a7655f | 2011-10-19 14:18:41 +0200 | [diff] [blame] | 469 | /* low-level chip reset */ |
Laurent Pinchart | 7eb42c6 | 2015-01-21 00:55:40 +0200 | [diff] [blame] | 470 | if (priv->rst_gpio) { |
| 471 | gpiod_set_value_cansleep(priv->rst_gpio, 1); |
Joachim Foerster | 3a7655f | 2011-10-19 14:18:41 +0200 | [diff] [blame] | 472 | mdelay(50); |
Laurent Pinchart | 7eb42c6 | 2015-01-21 00:55:40 +0200 | [diff] [blame] | 473 | gpiod_set_value_cansleep(priv->rst_gpio, 0); |
Joachim Foerster | 3a7655f | 2011-10-19 14:18:41 +0200 | [diff] [blame] | 474 | } |
| 475 | |
Nate Case | 3faefc8 | 2008-06-17 11:11:38 -0500 | [diff] [blame] | 476 | /* Setup HW Mode Control: This assumes a level active-low interrupt */ |
| 477 | hwmode = HW_DATA_BUS_32BIT; |
| 478 | |
| 479 | if (priv->devflags & ISP1760_FLAG_BUS_WIDTH_16) |
| 480 | hwmode &= ~HW_DATA_BUS_32BIT; |
| 481 | if (priv->devflags & ISP1760_FLAG_ANALOG_OC) |
| 482 | hwmode |= HW_ANA_DIGI_OC; |
| 483 | if (priv->devflags & ISP1760_FLAG_DACK_POL_HIGH) |
| 484 | hwmode |= HW_DACK_POL_HIGH; |
| 485 | if (priv->devflags & ISP1760_FLAG_DREQ_POL_HIGH) |
| 486 | hwmode |= HW_DREQ_POL_HIGH; |
Michael Hennerich | 9da69c6 | 2009-07-15 23:22:54 -0400 | [diff] [blame] | 487 | if (priv->devflags & ISP1760_FLAG_INTR_POL_HIGH) |
| 488 | hwmode |= HW_INTR_HIGH_ACT; |
| 489 | if (priv->devflags & ISP1760_FLAG_INTR_EDGE_TRIG) |
| 490 | hwmode |= HW_INTR_EDGE_TRIG; |
Nate Case | 3faefc8 | 2008-06-17 11:11:38 -0500 | [diff] [blame] | 491 | |
| 492 | /* |
| 493 | * We have to set this first in case we're in 16-bit mode. |
| 494 | * Write it twice to ensure correct upper bits if switching |
| 495 | * to 16-bit mode. |
| 496 | */ |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 497 | reg_write32(hcd->regs, HC_HW_MODE_CTRL, hwmode); |
| 498 | reg_write32(hcd->regs, HC_HW_MODE_CTRL, hwmode); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 499 | |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 500 | reg_write32(hcd->regs, HC_SCRATCH_REG, 0xdeadbabe); |
Nate Case | 3faefc8 | 2008-06-17 11:11:38 -0500 | [diff] [blame] | 501 | /* Change bus pattern */ |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 502 | scratch = reg_read32(hcd->regs, HC_CHIP_ID_REG); |
| 503 | scratch = reg_read32(hcd->regs, HC_SCRATCH_REG); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 504 | if (scratch != 0xdeadbabe) { |
Arvid Brodin | 6bda21b | 2011-02-26 22:06:37 +0100 | [diff] [blame] | 505 | dev_err(hcd->self.controller, "Scratch test failed.\n"); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 506 | return -ENODEV; |
| 507 | } |
| 508 | |
| 509 | /* pre reset */ |
Arvid Brodin | 71a9f9d | 2011-04-26 21:48:30 +0200 | [diff] [blame] | 510 | reg_write32(hcd->regs, HC_BUFFER_STATUS_REG, 0); |
| 511 | reg_write32(hcd->regs, HC_ATL_PTD_SKIPMAP_REG, NO_TRANSFER_ACTIVE); |
| 512 | reg_write32(hcd->regs, HC_INT_PTD_SKIPMAP_REG, NO_TRANSFER_ACTIVE); |
| 513 | reg_write32(hcd->regs, HC_ISO_PTD_SKIPMAP_REG, NO_TRANSFER_ACTIVE); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 514 | |
| 515 | /* reset */ |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 516 | reg_write32(hcd->regs, HC_RESET_REG, SW_RESET_RESET_ALL); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 517 | mdelay(100); |
| 518 | |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 519 | reg_write32(hcd->regs, HC_RESET_REG, SW_RESET_RESET_HC); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 520 | mdelay(100); |
| 521 | |
Arvid Brodin | 6bda21b | 2011-02-26 22:06:37 +0100 | [diff] [blame] | 522 | result = ehci_reset(hcd); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 523 | if (result) |
| 524 | return result; |
| 525 | |
| 526 | /* Step 11 passed */ |
| 527 | |
Arvid Brodin | 6bda21b | 2011-02-26 22:06:37 +0100 | [diff] [blame] | 528 | dev_info(hcd->self.controller, "bus width: %d, oc: %s\n", |
Nate Case | 3faefc8 | 2008-06-17 11:11:38 -0500 | [diff] [blame] | 529 | (priv->devflags & ISP1760_FLAG_BUS_WIDTH_16) ? |
| 530 | 16 : 32, (priv->devflags & ISP1760_FLAG_ANALOG_OC) ? |
| 531 | "analog" : "digital"); |
| 532 | |
| 533 | /* ATL reset */ |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 534 | reg_write32(hcd->regs, HC_HW_MODE_CTRL, hwmode | ALL_ATX_RESET); |
Nate Case | 3faefc8 | 2008-06-17 11:11:38 -0500 | [diff] [blame] | 535 | mdelay(10); |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 536 | reg_write32(hcd->regs, HC_HW_MODE_CTRL, hwmode); |
Nate Case | 3faefc8 | 2008-06-17 11:11:38 -0500 | [diff] [blame] | 537 | |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 538 | reg_write32(hcd->regs, HC_INTERRUPT_ENABLE, INTERRUPT_ENABLE_MASK); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 539 | |
Nate Case | 3faefc8 | 2008-06-17 11:11:38 -0500 | [diff] [blame] | 540 | /* |
| 541 | * PORT 1 Control register of the ISP1760 is the OTG control |
Thomas Hommel | 42c6539 | 2008-12-18 10:31:40 +0100 | [diff] [blame] | 542 | * register on ISP1761. Since there is no OTG or device controller |
| 543 | * support in this driver, we use port 1 as a "normal" USB host port on |
| 544 | * both chips. |
Nate Case | 3faefc8 | 2008-06-17 11:11:38 -0500 | [diff] [blame] | 545 | */ |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 546 | reg_write32(hcd->regs, HC_PORT1_CTRL, PORT1_POWER | PORT1_INIT2); |
Thomas Hommel | 42c6539 | 2008-12-18 10:31:40 +0100 | [diff] [blame] | 547 | mdelay(10); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 548 | |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 549 | priv->hcs_params = reg_read32(hcd->regs, HC_HCSPARAMS); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 550 | |
| 551 | return priv_init(hcd); |
| 552 | } |
| 553 | |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 554 | static u32 base_to_chip(u32 base) |
| 555 | { |
| 556 | return ((base - 0x400) >> 3); |
| 557 | } |
| 558 | |
Arvid Brodin | 7adc14b1 | 2011-02-26 22:08:47 +0100 | [diff] [blame] | 559 | static int last_qtd_of_urb(struct isp1760_qtd *qtd, struct isp1760_qh *qh) |
| 560 | { |
| 561 | struct urb *urb; |
| 562 | |
| 563 | if (list_is_last(&qtd->qtd_list, &qh->qtd_list)) |
| 564 | return 1; |
| 565 | |
| 566 | urb = qtd->urb; |
| 567 | qtd = list_entry(qtd->qtd_list.next, typeof(*qtd), qtd_list); |
| 568 | return (qtd->urb != urb); |
| 569 | } |
| 570 | |
Arvid Brodin | 71a9f9d | 2011-04-26 21:48:30 +0200 | [diff] [blame] | 571 | /* magic numbers that can affect system performance */ |
| 572 | #define EHCI_TUNE_CERR 3 /* 0-3 qtd retries; 0 == don't stop */ |
| 573 | #define EHCI_TUNE_RL_HS 4 /* nak throttle; see 4.9 */ |
| 574 | #define EHCI_TUNE_RL_TT 0 |
| 575 | #define EHCI_TUNE_MULT_HS 1 /* 1-3 transactions/uframe; 4.10.3 */ |
| 576 | #define EHCI_TUNE_MULT_TT 1 |
| 577 | #define EHCI_TUNE_FLS 2 /* (small) 256 frame schedule */ |
| 578 | |
| 579 | static void create_ptd_atl(struct isp1760_qh *qh, |
Arvid Brodin | a041d8e | 2011-02-26 22:04:40 +0100 | [diff] [blame] | 580 | struct isp1760_qtd *qtd, struct ptd *ptd) |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 581 | { |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 582 | u32 maxpacket; |
| 583 | u32 multi; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 584 | u32 rl = RL_COUNTER; |
| 585 | u32 nak = NAK_COUNTER; |
| 586 | |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 587 | memset(ptd, 0, sizeof(*ptd)); |
| 588 | |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 589 | /* according to 3.6.2, max packet len can not be > 0x400 */ |
Arvid Brodin | a041d8e | 2011-02-26 22:04:40 +0100 | [diff] [blame] | 590 | maxpacket = usb_maxpacket(qtd->urb->dev, qtd->urb->pipe, |
| 591 | usb_pipeout(qtd->urb->pipe)); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 592 | multi = 1 + ((maxpacket >> 11) & 0x3); |
| 593 | maxpacket &= 0x7ff; |
| 594 | |
| 595 | /* DW0 */ |
Arvid Brodin | 71a9f9d | 2011-04-26 21:48:30 +0200 | [diff] [blame] | 596 | ptd->dw0 = DW0_VALID_BIT; |
| 597 | ptd->dw0 |= TO_DW0_LENGTH(qtd->length); |
| 598 | ptd->dw0 |= TO_DW0_MAXPACKET(maxpacket); |
| 599 | ptd->dw0 |= TO_DW0_ENDPOINT(usb_pipeendpoint(qtd->urb->pipe)); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 600 | |
| 601 | /* DW1 */ |
Arvid Brodin | a041d8e | 2011-02-26 22:04:40 +0100 | [diff] [blame] | 602 | ptd->dw1 = usb_pipeendpoint(qtd->urb->pipe) >> 1; |
Arvid Brodin | 71a9f9d | 2011-04-26 21:48:30 +0200 | [diff] [blame] | 603 | ptd->dw1 |= TO_DW1_DEVICE_ADDR(usb_pipedevice(qtd->urb->pipe)); |
| 604 | ptd->dw1 |= TO_DW1_PID_TOKEN(qtd->packet_type); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 605 | |
Arvid Brodin | a041d8e | 2011-02-26 22:04:40 +0100 | [diff] [blame] | 606 | if (usb_pipebulk(qtd->urb->pipe)) |
Arvid Brodin | 71a9f9d | 2011-04-26 21:48:30 +0200 | [diff] [blame] | 607 | ptd->dw1 |= DW1_TRANS_BULK; |
Arvid Brodin | a041d8e | 2011-02-26 22:04:40 +0100 | [diff] [blame] | 608 | else if (usb_pipeint(qtd->urb->pipe)) |
Arvid Brodin | 71a9f9d | 2011-04-26 21:48:30 +0200 | [diff] [blame] | 609 | ptd->dw1 |= DW1_TRANS_INT; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 610 | |
Arvid Brodin | a041d8e | 2011-02-26 22:04:40 +0100 | [diff] [blame] | 611 | if (qtd->urb->dev->speed != USB_SPEED_HIGH) { |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 612 | /* split transaction */ |
| 613 | |
Arvid Brodin | 71a9f9d | 2011-04-26 21:48:30 +0200 | [diff] [blame] | 614 | ptd->dw1 |= DW1_TRANS_SPLIT; |
Arvid Brodin | a041d8e | 2011-02-26 22:04:40 +0100 | [diff] [blame] | 615 | if (qtd->urb->dev->speed == USB_SPEED_LOW) |
Arvid Brodin | 71a9f9d | 2011-04-26 21:48:30 +0200 | [diff] [blame] | 616 | ptd->dw1 |= DW1_SE_USB_LOSPEED; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 617 | |
Arvid Brodin | 71a9f9d | 2011-04-26 21:48:30 +0200 | [diff] [blame] | 618 | ptd->dw1 |= TO_DW1_PORT_NUM(qtd->urb->dev->ttport); |
| 619 | ptd->dw1 |= TO_DW1_HUB_NUM(qtd->urb->dev->tt->hub->devnum); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 620 | |
| 621 | /* SE bit for Split INT transfers */ |
Arvid Brodin | a041d8e | 2011-02-26 22:04:40 +0100 | [diff] [blame] | 622 | if (usb_pipeint(qtd->urb->pipe) && |
| 623 | (qtd->urb->dev->speed == USB_SPEED_LOW)) |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 624 | ptd->dw1 |= 2 << 16; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 625 | |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 626 | rl = 0; |
| 627 | nak = 0; |
| 628 | } else { |
Arvid Brodin | 71a9f9d | 2011-04-26 21:48:30 +0200 | [diff] [blame] | 629 | ptd->dw0 |= TO_DW0_MULTI(multi); |
Arvid Brodin | a041d8e | 2011-02-26 22:04:40 +0100 | [diff] [blame] | 630 | if (usb_pipecontrol(qtd->urb->pipe) || |
| 631 | usb_pipebulk(qtd->urb->pipe)) |
Arvid Brodin | 71a9f9d | 2011-04-26 21:48:30 +0200 | [diff] [blame] | 632 | ptd->dw3 |= TO_DW3_PING(qh->ping); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 633 | } |
| 634 | /* DW2 */ |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 635 | ptd->dw2 = 0; |
Arvid Brodin | 71a9f9d | 2011-04-26 21:48:30 +0200 | [diff] [blame] | 636 | ptd->dw2 |= TO_DW2_DATA_START_ADDR(base_to_chip(qtd->payload_addr)); |
| 637 | ptd->dw2 |= TO_DW2_RL(rl); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 638 | |
| 639 | /* DW3 */ |
Arvid Brodin | 71a9f9d | 2011-04-26 21:48:30 +0200 | [diff] [blame] | 640 | ptd->dw3 |= TO_DW3_NAKCOUNT(nak); |
| 641 | ptd->dw3 |= TO_DW3_DATA_TOGGLE(qh->toggle); |
Arvid Brodin | 7adc14b1 | 2011-02-26 22:08:47 +0100 | [diff] [blame] | 642 | if (usb_pipecontrol(qtd->urb->pipe)) { |
| 643 | if (qtd->data_buffer == qtd->urb->setup_packet) |
Arvid Brodin | 71a9f9d | 2011-04-26 21:48:30 +0200 | [diff] [blame] | 644 | ptd->dw3 &= ~TO_DW3_DATA_TOGGLE(1); |
Arvid Brodin | 7adc14b1 | 2011-02-26 22:08:47 +0100 | [diff] [blame] | 645 | else if (last_qtd_of_urb(qtd, qh)) |
Arvid Brodin | 71a9f9d | 2011-04-26 21:48:30 +0200 | [diff] [blame] | 646 | ptd->dw3 |= TO_DW3_DATA_TOGGLE(1); |
Arvid Brodin | 7adc14b1 | 2011-02-26 22:08:47 +0100 | [diff] [blame] | 647 | } |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 648 | |
Arvid Brodin | 71a9f9d | 2011-04-26 21:48:30 +0200 | [diff] [blame] | 649 | ptd->dw3 |= DW3_ACTIVE_BIT; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 650 | /* Cerr */ |
Arvid Brodin | 71a9f9d | 2011-04-26 21:48:30 +0200 | [diff] [blame] | 651 | ptd->dw3 |= TO_DW3_CERR(ERR_COUNTER); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 652 | } |
| 653 | |
Arvid Brodin | 6bda21b | 2011-02-26 22:06:37 +0100 | [diff] [blame] | 654 | static void transform_add_int(struct isp1760_qh *qh, |
Arvid Brodin | a041d8e | 2011-02-26 22:04:40 +0100 | [diff] [blame] | 655 | struct isp1760_qtd *qtd, struct ptd *ptd) |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 656 | { |
Arvid Brodin | 65f1b52 | 2011-02-26 22:07:35 +0100 | [diff] [blame] | 657 | u32 usof; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 658 | u32 period; |
| 659 | |
Arvid Brodin | 65f1b52 | 2011-02-26 22:07:35 +0100 | [diff] [blame] | 660 | /* |
| 661 | * Most of this is guessing. ISP1761 datasheet is quite unclear, and |
| 662 | * the algorithm from the original Philips driver code, which was |
| 663 | * pretty much used in this driver before as well, is quite horrendous |
| 664 | * and, i believe, incorrect. The code below follows the datasheet and |
| 665 | * USB2.0 spec as far as I can tell, and plug/unplug seems to be much |
| 666 | * more reliable this way (fingers crossed...). |
| 667 | */ |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 668 | |
Arvid Brodin | 65f1b52 | 2011-02-26 22:07:35 +0100 | [diff] [blame] | 669 | if (qtd->urb->dev->speed == USB_SPEED_HIGH) { |
| 670 | /* urb->interval is in units of microframes (1/8 ms) */ |
| 671 | period = qtd->urb->interval >> 3; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 672 | |
Arvid Brodin | 65f1b52 | 2011-02-26 22:07:35 +0100 | [diff] [blame] | 673 | if (qtd->urb->interval > 4) |
| 674 | usof = 0x01; /* One bit set => |
| 675 | interval 1 ms * uFrame-match */ |
| 676 | else if (qtd->urb->interval > 2) |
| 677 | usof = 0x22; /* Two bits set => interval 1/2 ms */ |
| 678 | else if (qtd->urb->interval > 1) |
| 679 | usof = 0x55; /* Four bits set => interval 1/4 ms */ |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 680 | else |
Arvid Brodin | 65f1b52 | 2011-02-26 22:07:35 +0100 | [diff] [blame] | 681 | usof = 0xff; /* All bits set => interval 1/8 ms */ |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 682 | } else { |
Arvid Brodin | 65f1b52 | 2011-02-26 22:07:35 +0100 | [diff] [blame] | 683 | /* urb->interval is in units of frames (1 ms) */ |
| 684 | period = qtd->urb->interval; |
| 685 | usof = 0x0f; /* Execute Start Split on any of the |
| 686 | four first uFrames */ |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 687 | |
Arvid Brodin | 65f1b52 | 2011-02-26 22:07:35 +0100 | [diff] [blame] | 688 | /* |
| 689 | * First 8 bits in dw5 is uSCS and "specifies which uSOF the |
| 690 | * complete split needs to be sent. Valid only for IN." Also, |
| 691 | * "All bits can be set to one for every transfer." (p 82, |
| 692 | * ISP1761 data sheet.) 0x1c is from Philips driver. Where did |
| 693 | * that number come from? 0xff seems to work fine... |
| 694 | */ |
| 695 | /* ptd->dw5 = 0x1c; */ |
| 696 | ptd->dw5 = 0xff; /* Execute Complete Split on any uFrame */ |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 697 | } |
| 698 | |
Arvid Brodin | 65f1b52 | 2011-02-26 22:07:35 +0100 | [diff] [blame] | 699 | period = period >> 1;/* Ensure equal or shorter period than requested */ |
| 700 | period &= 0xf8; /* Mask off too large values and lowest unused 3 bits */ |
| 701 | |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 702 | ptd->dw2 |= period; |
| 703 | ptd->dw4 = usof; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 704 | } |
| 705 | |
Arvid Brodin | 71a9f9d | 2011-04-26 21:48:30 +0200 | [diff] [blame] | 706 | static void create_ptd_int(struct isp1760_qh *qh, |
Arvid Brodin | a041d8e | 2011-02-26 22:04:40 +0100 | [diff] [blame] | 707 | struct isp1760_qtd *qtd, struct ptd *ptd) |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 708 | { |
Arvid Brodin | 71a9f9d | 2011-04-26 21:48:30 +0200 | [diff] [blame] | 709 | create_ptd_atl(qh, qtd, ptd); |
Arvid Brodin | 6bda21b | 2011-02-26 22:06:37 +0100 | [diff] [blame] | 710 | transform_add_int(qh, qtd, ptd); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 711 | } |
| 712 | |
Arvid Brodin | 6bda21b | 2011-02-26 22:06:37 +0100 | [diff] [blame] | 713 | static void isp1760_urb_done(struct usb_hcd *hcd, struct urb *urb) |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 714 | __releases(priv->lock) |
| 715 | __acquires(priv->lock) |
| 716 | { |
Arvid Brodin | 6bda21b | 2011-02-26 22:06:37 +0100 | [diff] [blame] | 717 | struct isp1760_hcd *priv = hcd_to_priv(hcd); |
| 718 | |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 719 | if (!urb->unlinked) { |
Arvid Brodin | 6bda21b | 2011-02-26 22:06:37 +0100 | [diff] [blame] | 720 | if (urb->status == -EINPROGRESS) |
| 721 | urb->status = 0; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 722 | } |
| 723 | |
Catalin Marinas | db8516f | 2010-02-02 15:31:02 +0000 | [diff] [blame] | 724 | if (usb_pipein(urb->pipe) && usb_pipetype(urb->pipe) != PIPE_CONTROL) { |
| 725 | void *ptr; |
| 726 | for (ptr = urb->transfer_buffer; |
| 727 | ptr < urb->transfer_buffer + urb->transfer_buffer_length; |
| 728 | ptr += PAGE_SIZE) |
| 729 | flush_dcache_page(virt_to_page(ptr)); |
| 730 | } |
| 731 | |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 732 | /* complete() can reenter this HCD */ |
Arvid Brodin | 6bda21b | 2011-02-26 22:06:37 +0100 | [diff] [blame] | 733 | usb_hcd_unlink_urb_from_ep(hcd, urb); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 734 | spin_unlock(&priv->lock); |
Arvid Brodin | 6bda21b | 2011-02-26 22:06:37 +0100 | [diff] [blame] | 735 | usb_hcd_giveback_urb(hcd, urb, urb->status); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 736 | spin_lock(&priv->lock); |
| 737 | } |
| 738 | |
Arvid Brodin | 3453773 | 2011-04-26 21:47:37 +0200 | [diff] [blame] | 739 | static struct isp1760_qtd *qtd_alloc(gfp_t flags, struct urb *urb, |
| 740 | u8 packet_type) |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 741 | { |
Arvid Brodin | 3453773 | 2011-04-26 21:47:37 +0200 | [diff] [blame] | 742 | struct isp1760_qtd *qtd; |
| 743 | |
| 744 | qtd = kmem_cache_zalloc(qtd_cachep, flags); |
| 745 | if (!qtd) |
| 746 | return NULL; |
| 747 | |
| 748 | INIT_LIST_HEAD(&qtd->qtd_list); |
| 749 | qtd->urb = urb; |
| 750 | qtd->packet_type = packet_type; |
Arvid Brodin | 71a9f9d | 2011-04-26 21:48:30 +0200 | [diff] [blame] | 751 | qtd->status = QTD_ENQUEUED; |
| 752 | qtd->actual_length = 0; |
Arvid Brodin | 3453773 | 2011-04-26 21:47:37 +0200 | [diff] [blame] | 753 | |
| 754 | return qtd; |
| 755 | } |
| 756 | |
| 757 | static void qtd_free(struct isp1760_qtd *qtd) |
| 758 | { |
| 759 | WARN_ON(qtd->payload_addr); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 760 | kmem_cache_free(qtd_cachep, qtd); |
| 761 | } |
| 762 | |
Arvid Brodin | 71a9f9d | 2011-04-26 21:48:30 +0200 | [diff] [blame] | 763 | static void start_bus_transfer(struct usb_hcd *hcd, u32 ptd_offset, int slot, |
Laurent Pinchart | ea0b1fa | 2015-01-21 00:55:55 +0200 | [diff] [blame] | 764 | struct isp1760_slotinfo *slots, |
| 765 | struct isp1760_qtd *qtd, struct isp1760_qh *qh, |
| 766 | struct ptd *ptd) |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 767 | { |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 768 | struct isp1760_hcd *priv = hcd_to_priv(hcd); |
Arvid Brodin | d05b6ec | 2011-05-20 00:17:45 +0200 | [diff] [blame] | 769 | int skip_map; |
| 770 | |
Arvid Brodin | 71a9f9d | 2011-04-26 21:48:30 +0200 | [diff] [blame] | 771 | WARN_ON((slot < 0) || (slot > 31)); |
| 772 | WARN_ON(qtd->length && !qtd->payload_addr); |
| 773 | WARN_ON(slots[slot].qtd); |
| 774 | WARN_ON(slots[slot].qh); |
| 775 | WARN_ON(qtd->status != QTD_PAYLOAD_ALLOC); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 776 | |
Arvid Brodin | d05b6ec | 2011-05-20 00:17:45 +0200 | [diff] [blame] | 777 | /* Make sure done map has not triggered from some unlinked transfer */ |
| 778 | if (ptd_offset == ATL_PTD_OFFSET) { |
| 779 | priv->atl_done_map |= reg_read32(hcd->regs, |
| 780 | HC_ATL_PTD_DONEMAP_REG); |
Arvid Brodin | 6477acc | 2011-08-21 08:29:28 +0200 | [diff] [blame] | 781 | priv->atl_done_map &= ~(1 << slot); |
| 782 | } else { |
| 783 | priv->int_done_map |= reg_read32(hcd->regs, |
| 784 | HC_INT_PTD_DONEMAP_REG); |
| 785 | priv->int_done_map &= ~(1 << slot); |
| 786 | } |
Arvid Brodin | d05b6ec | 2011-05-20 00:17:45 +0200 | [diff] [blame] | 787 | |
Arvid Brodin | 6477acc | 2011-08-21 08:29:28 +0200 | [diff] [blame] | 788 | qh->slot = slot; |
| 789 | qtd->status = QTD_XFER_STARTED; |
| 790 | slots[slot].timestamp = jiffies; |
| 791 | slots[slot].qtd = qtd; |
| 792 | slots[slot].qh = qh; |
| 793 | ptd_write(hcd->regs, ptd_offset, slot, ptd); |
| 794 | |
| 795 | if (ptd_offset == ATL_PTD_OFFSET) { |
Arvid Brodin | d05b6ec | 2011-05-20 00:17:45 +0200 | [diff] [blame] | 796 | skip_map = reg_read32(hcd->regs, HC_ATL_PTD_SKIPMAP_REG); |
| 797 | skip_map &= ~(1 << qh->slot); |
| 798 | reg_write32(hcd->regs, HC_ATL_PTD_SKIPMAP_REG, skip_map); |
| 799 | } else { |
Arvid Brodin | d05b6ec | 2011-05-20 00:17:45 +0200 | [diff] [blame] | 800 | skip_map = reg_read32(hcd->regs, HC_INT_PTD_SKIPMAP_REG); |
| 801 | skip_map &= ~(1 << qh->slot); |
| 802 | reg_write32(hcd->regs, HC_INT_PTD_SKIPMAP_REG, skip_map); |
| 803 | } |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 804 | } |
| 805 | |
Arvid Brodin | 71a9f9d | 2011-04-26 21:48:30 +0200 | [diff] [blame] | 806 | static int is_short_bulk(struct isp1760_qtd *qtd) |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 807 | { |
Arvid Brodin | 71a9f9d | 2011-04-26 21:48:30 +0200 | [diff] [blame] | 808 | return (usb_pipebulk(qtd->urb->pipe) && |
| 809 | (qtd->actual_length < qtd->length)); |
| 810 | } |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 811 | |
Arvid Brodin | 71a9f9d | 2011-04-26 21:48:30 +0200 | [diff] [blame] | 812 | static void collect_qtds(struct usb_hcd *hcd, struct isp1760_qh *qh, |
| 813 | struct list_head *urb_list) |
| 814 | { |
| 815 | int last_qtd; |
| 816 | struct isp1760_qtd *qtd, *qtd_next; |
| 817 | struct urb_listitem *urb_listitem; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 818 | |
Arvid Brodin | 71a9f9d | 2011-04-26 21:48:30 +0200 | [diff] [blame] | 819 | list_for_each_entry_safe(qtd, qtd_next, &qh->qtd_list, qtd_list) { |
| 820 | if (qtd->status < QTD_XFER_COMPLETE) |
| 821 | break; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 822 | |
Arvid Brodin | 38679b7 | 2011-08-21 08:29:27 +0200 | [diff] [blame] | 823 | last_qtd = last_qtd_of_urb(qtd, qh); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 824 | |
Arvid Brodin | 71a9f9d | 2011-04-26 21:48:30 +0200 | [diff] [blame] | 825 | if ((!last_qtd) && (qtd->status == QTD_RETIRE)) |
| 826 | qtd_next->status = QTD_RETIRE; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 827 | |
Arvid Brodin | 71a9f9d | 2011-04-26 21:48:30 +0200 | [diff] [blame] | 828 | if (qtd->status == QTD_XFER_COMPLETE) { |
| 829 | if (qtd->actual_length) { |
| 830 | switch (qtd->packet_type) { |
| 831 | case IN_PID: |
| 832 | mem_reads8(hcd->regs, qtd->payload_addr, |
| 833 | qtd->data_buffer, |
| 834 | qtd->actual_length); |
| 835 | /* Fall through (?) */ |
| 836 | case OUT_PID: |
| 837 | qtd->urb->actual_length += |
| 838 | qtd->actual_length; |
| 839 | /* Fall through ... */ |
| 840 | case SETUP_PID: |
| 841 | break; |
| 842 | } |
| 843 | } |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 844 | |
Arvid Brodin | 71a9f9d | 2011-04-26 21:48:30 +0200 | [diff] [blame] | 845 | if (is_short_bulk(qtd)) { |
| 846 | if (qtd->urb->transfer_flags & URB_SHORT_NOT_OK) |
| 847 | qtd->urb->status = -EREMOTEIO; |
| 848 | if (!last_qtd) |
| 849 | qtd_next->status = QTD_RETIRE; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 850 | } |
| 851 | } |
| 852 | |
Arvid Brodin | 71a9f9d | 2011-04-26 21:48:30 +0200 | [diff] [blame] | 853 | if (qtd->payload_addr) |
| 854 | free_mem(hcd, qtd); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 855 | |
Arvid Brodin | 71a9f9d | 2011-04-26 21:48:30 +0200 | [diff] [blame] | 856 | if (last_qtd) { |
| 857 | if ((qtd->status == QTD_RETIRE) && |
| 858 | (qtd->urb->status == -EINPROGRESS)) |
| 859 | qtd->urb->status = -EPIPE; |
| 860 | /* Defer calling of urb_done() since it releases lock */ |
| 861 | urb_listitem = kmem_cache_zalloc(urb_listitem_cachep, |
| 862 | GFP_ATOMIC); |
| 863 | if (unlikely(!urb_listitem)) |
Arvid Brodin | 38679b7 | 2011-08-21 08:29:27 +0200 | [diff] [blame] | 864 | break; /* Try again on next call */ |
Arvid Brodin | 71a9f9d | 2011-04-26 21:48:30 +0200 | [diff] [blame] | 865 | urb_listitem->urb = qtd->urb; |
| 866 | list_add_tail(&urb_listitem->urb_list, urb_list); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 867 | } |
| 868 | |
Arvid Brodin | 71a9f9d | 2011-04-26 21:48:30 +0200 | [diff] [blame] | 869 | list_del(&qtd->qtd_list); |
| 870 | qtd_free(qtd); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 871 | } |
| 872 | } |
| 873 | |
Arvid Brodin | 71a9f9d | 2011-04-26 21:48:30 +0200 | [diff] [blame] | 874 | #define ENQUEUE_DEPTH 2 |
| 875 | static void enqueue_qtds(struct usb_hcd *hcd, struct isp1760_qh *qh) |
| 876 | { |
| 877 | struct isp1760_hcd *priv = hcd_to_priv(hcd); |
| 878 | int ptd_offset; |
Laurent Pinchart | ea0b1fa | 2015-01-21 00:55:55 +0200 | [diff] [blame] | 879 | struct isp1760_slotinfo *slots; |
Arvid Brodin | 71a9f9d | 2011-04-26 21:48:30 +0200 | [diff] [blame] | 880 | int curr_slot, free_slot; |
| 881 | int n; |
| 882 | struct ptd ptd; |
| 883 | struct isp1760_qtd *qtd; |
| 884 | |
| 885 | if (unlikely(list_empty(&qh->qtd_list))) { |
| 886 | WARN_ON(1); |
| 887 | return; |
| 888 | } |
| 889 | |
Arvid Brodin | 74ad602 | 2011-08-23 01:25:30 +0200 | [diff] [blame] | 890 | /* Make sure this endpoint's TT buffer is clean before queueing ptds */ |
| 891 | if (qh->tt_buffer_dirty) |
| 892 | return; |
| 893 | |
Arvid Brodin | 71a9f9d | 2011-04-26 21:48:30 +0200 | [diff] [blame] | 894 | if (usb_pipeint(list_entry(qh->qtd_list.next, struct isp1760_qtd, |
| 895 | qtd_list)->urb->pipe)) { |
| 896 | ptd_offset = INT_PTD_OFFSET; |
| 897 | slots = priv->int_slots; |
| 898 | } else { |
| 899 | ptd_offset = ATL_PTD_OFFSET; |
| 900 | slots = priv->atl_slots; |
| 901 | } |
| 902 | |
| 903 | free_slot = -1; |
| 904 | for (curr_slot = 0; curr_slot < 32; curr_slot++) { |
| 905 | if ((free_slot == -1) && (slots[curr_slot].qtd == NULL)) |
| 906 | free_slot = curr_slot; |
| 907 | if (slots[curr_slot].qh == qh) |
| 908 | break; |
| 909 | } |
| 910 | |
| 911 | n = 0; |
| 912 | list_for_each_entry(qtd, &qh->qtd_list, qtd_list) { |
| 913 | if (qtd->status == QTD_ENQUEUED) { |
| 914 | WARN_ON(qtd->payload_addr); |
| 915 | alloc_mem(hcd, qtd); |
| 916 | if ((qtd->length) && (!qtd->payload_addr)) |
| 917 | break; |
| 918 | |
| 919 | if ((qtd->length) && |
| 920 | ((qtd->packet_type == SETUP_PID) || |
| 921 | (qtd->packet_type == OUT_PID))) { |
| 922 | mem_writes8(hcd->regs, qtd->payload_addr, |
| 923 | qtd->data_buffer, qtd->length); |
| 924 | } |
| 925 | |
| 926 | qtd->status = QTD_PAYLOAD_ALLOC; |
| 927 | } |
| 928 | |
| 929 | if (qtd->status == QTD_PAYLOAD_ALLOC) { |
| 930 | /* |
| 931 | if ((curr_slot > 31) && (free_slot == -1)) |
| 932 | dev_dbg(hcd->self.controller, "%s: No slot " |
| 933 | "available for transfer\n", __func__); |
| 934 | */ |
| 935 | /* Start xfer for this endpoint if not already done */ |
| 936 | if ((curr_slot > 31) && (free_slot > -1)) { |
| 937 | if (usb_pipeint(qtd->urb->pipe)) |
| 938 | create_ptd_int(qh, qtd, &ptd); |
| 939 | else |
| 940 | create_ptd_atl(qh, qtd, &ptd); |
| 941 | |
| 942 | start_bus_transfer(hcd, ptd_offset, free_slot, |
| 943 | slots, qtd, qh, &ptd); |
| 944 | curr_slot = free_slot; |
| 945 | } |
| 946 | |
| 947 | n++; |
| 948 | if (n >= ENQUEUE_DEPTH) |
| 949 | break; |
| 950 | } |
| 951 | } |
| 952 | } |
| 953 | |
Arvid Brodin | de9c630 | 2013-01-27 16:41:26 +0100 | [diff] [blame] | 954 | static void schedule_ptds(struct usb_hcd *hcd) |
Arvid Brodin | 71a9f9d | 2011-04-26 21:48:30 +0200 | [diff] [blame] | 955 | { |
| 956 | struct isp1760_hcd *priv; |
| 957 | struct isp1760_qh *qh, *qh_next; |
| 958 | struct list_head *ep_queue; |
Arvid Brodin | 71a9f9d | 2011-04-26 21:48:30 +0200 | [diff] [blame] | 959 | LIST_HEAD(urb_list); |
| 960 | struct urb_listitem *urb_listitem, *urb_listitem_next; |
Arvid Brodin | e08f6a27 | 2011-11-23 18:10:41 +0100 | [diff] [blame] | 961 | int i; |
Arvid Brodin | 71a9f9d | 2011-04-26 21:48:30 +0200 | [diff] [blame] | 962 | |
| 963 | if (!hcd) { |
| 964 | WARN_ON(1); |
| 965 | return; |
| 966 | } |
| 967 | |
| 968 | priv = hcd_to_priv(hcd); |
| 969 | |
| 970 | /* |
| 971 | * check finished/retired xfers, transfer payloads, call urb_done() |
| 972 | */ |
Arvid Brodin | e08f6a27 | 2011-11-23 18:10:41 +0100 | [diff] [blame] | 973 | for (i = 0; i < QH_END; i++) { |
| 974 | ep_queue = &priv->qh_list[i]; |
Arvid Brodin | 71a9f9d | 2011-04-26 21:48:30 +0200 | [diff] [blame] | 975 | list_for_each_entry_safe(qh, qh_next, ep_queue, qh_list) { |
Arvid Brodin | 71a9f9d | 2011-04-26 21:48:30 +0200 | [diff] [blame] | 976 | collect_qtds(hcd, qh, &urb_list); |
Arvid Brodin | c64391f | 2011-11-23 18:13:02 +0100 | [diff] [blame] | 977 | if (list_empty(&qh->qtd_list)) |
Arvid Brodin | 71a9f9d | 2011-04-26 21:48:30 +0200 | [diff] [blame] | 978 | list_del(&qh->qh_list); |
Arvid Brodin | 71a9f9d | 2011-04-26 21:48:30 +0200 | [diff] [blame] | 979 | } |
Arvid Brodin | 71a9f9d | 2011-04-26 21:48:30 +0200 | [diff] [blame] | 980 | } |
| 981 | |
| 982 | list_for_each_entry_safe(urb_listitem, urb_listitem_next, &urb_list, |
| 983 | urb_list) { |
| 984 | isp1760_urb_done(hcd, urb_listitem->urb); |
| 985 | kmem_cache_free(urb_listitem_cachep, urb_listitem); |
| 986 | } |
| 987 | |
| 988 | /* |
| 989 | * Schedule packets for transfer. |
| 990 | * |
| 991 | * According to USB2.0 specification: |
| 992 | * |
| 993 | * 1st prio: interrupt xfers, up to 80 % of bandwidth |
| 994 | * 2nd prio: control xfers |
| 995 | * 3rd prio: bulk xfers |
| 996 | * |
| 997 | * ... but let's use a simpler scheme here (mostly because ISP1761 doc |
| 998 | * is very unclear on how to prioritize traffic): |
| 999 | * |
| 1000 | * 1) Enqueue any queued control transfers, as long as payload chip mem |
| 1001 | * and PTD ATL slots are available. |
| 1002 | * 2) Enqueue any queued INT transfers, as long as payload chip mem |
| 1003 | * and PTD INT slots are available. |
| 1004 | * 3) Enqueue any queued bulk transfers, as long as payload chip mem |
| 1005 | * and PTD ATL slots are available. |
| 1006 | * |
| 1007 | * Use double buffering (ENQUEUE_DEPTH==2) as a compromise between |
| 1008 | * conservation of chip mem and performance. |
| 1009 | * |
| 1010 | * I'm sure this scheme could be improved upon! |
| 1011 | */ |
Arvid Brodin | e08f6a27 | 2011-11-23 18:10:41 +0100 | [diff] [blame] | 1012 | for (i = 0; i < QH_END; i++) { |
| 1013 | ep_queue = &priv->qh_list[i]; |
Arvid Brodin | 71a9f9d | 2011-04-26 21:48:30 +0200 | [diff] [blame] | 1014 | list_for_each_entry_safe(qh, qh_next, ep_queue, qh_list) |
| 1015 | enqueue_qtds(hcd, qh); |
Arvid Brodin | 71a9f9d | 2011-04-26 21:48:30 +0200 | [diff] [blame] | 1016 | } |
| 1017 | } |
| 1018 | |
| 1019 | #define PTD_STATE_QTD_DONE 1 |
| 1020 | #define PTD_STATE_QTD_RELOAD 2 |
| 1021 | #define PTD_STATE_URB_RETIRE 3 |
| 1022 | |
| 1023 | static int check_int_transfer(struct usb_hcd *hcd, struct ptd *ptd, |
| 1024 | struct urb *urb) |
| 1025 | { |
| 1026 | __dw dw4; |
| 1027 | int i; |
| 1028 | |
| 1029 | dw4 = ptd->dw4; |
| 1030 | dw4 >>= 8; |
| 1031 | |
| 1032 | /* FIXME: ISP1761 datasheet does not say what to do with these. Do we |
| 1033 | need to handle these errors? Is it done in hardware? */ |
| 1034 | |
| 1035 | if (ptd->dw3 & DW3_HALT_BIT) { |
| 1036 | |
| 1037 | urb->status = -EPROTO; /* Default unknown error */ |
| 1038 | |
| 1039 | for (i = 0; i < 8; i++) { |
| 1040 | switch (dw4 & 0x7) { |
| 1041 | case INT_UNDERRUN: |
| 1042 | dev_dbg(hcd->self.controller, "%s: underrun " |
| 1043 | "during uFrame %d\n", |
| 1044 | __func__, i); |
| 1045 | urb->status = -ECOMM; /* Could not write data */ |
| 1046 | break; |
| 1047 | case INT_EXACT: |
| 1048 | dev_dbg(hcd->self.controller, "%s: transaction " |
| 1049 | "error during uFrame %d\n", |
| 1050 | __func__, i); |
| 1051 | urb->status = -EPROTO; /* timeout, bad CRC, PID |
| 1052 | error etc. */ |
| 1053 | break; |
| 1054 | case INT_BABBLE: |
| 1055 | dev_dbg(hcd->self.controller, "%s: babble " |
| 1056 | "error during uFrame %d\n", |
| 1057 | __func__, i); |
| 1058 | urb->status = -EOVERFLOW; |
| 1059 | break; |
| 1060 | } |
| 1061 | dw4 >>= 3; |
| 1062 | } |
| 1063 | |
| 1064 | return PTD_STATE_URB_RETIRE; |
| 1065 | } |
| 1066 | |
| 1067 | return PTD_STATE_QTD_DONE; |
| 1068 | } |
| 1069 | |
| 1070 | static int check_atl_transfer(struct usb_hcd *hcd, struct ptd *ptd, |
| 1071 | struct urb *urb) |
| 1072 | { |
| 1073 | WARN_ON(!ptd); |
| 1074 | if (ptd->dw3 & DW3_HALT_BIT) { |
| 1075 | if (ptd->dw3 & DW3_BABBLE_BIT) |
| 1076 | urb->status = -EOVERFLOW; |
| 1077 | else if (FROM_DW3_CERR(ptd->dw3)) |
| 1078 | urb->status = -EPIPE; /* Stall */ |
| 1079 | else if (ptd->dw3 & DW3_ERROR_BIT) |
| 1080 | urb->status = -EPROTO; /* XactErr */ |
| 1081 | else |
| 1082 | urb->status = -EPROTO; /* Unknown */ |
| 1083 | /* |
| 1084 | dev_dbg(hcd->self.controller, "%s: ptd error:\n" |
| 1085 | " dw0: %08x dw1: %08x dw2: %08x dw3: %08x\n" |
| 1086 | " dw4: %08x dw5: %08x dw6: %08x dw7: %08x\n", |
| 1087 | __func__, |
| 1088 | ptd->dw0, ptd->dw1, ptd->dw2, ptd->dw3, |
| 1089 | ptd->dw4, ptd->dw5, ptd->dw6, ptd->dw7); |
| 1090 | */ |
| 1091 | return PTD_STATE_URB_RETIRE; |
| 1092 | } |
| 1093 | |
| 1094 | if ((ptd->dw3 & DW3_ERROR_BIT) && (ptd->dw3 & DW3_ACTIVE_BIT)) { |
| 1095 | /* Transfer Error, *but* active and no HALT -> reload */ |
| 1096 | dev_dbg(hcd->self.controller, "PID error; reloading ptd\n"); |
| 1097 | return PTD_STATE_QTD_RELOAD; |
| 1098 | } |
| 1099 | |
| 1100 | if (!FROM_DW3_NAKCOUNT(ptd->dw3) && (ptd->dw3 & DW3_ACTIVE_BIT)) { |
| 1101 | /* |
| 1102 | * NAKs are handled in HW by the chip. Usually if the |
| 1103 | * device is not able to send data fast enough. |
| 1104 | * This happens mostly on slower hardware. |
| 1105 | */ |
| 1106 | return PTD_STATE_QTD_RELOAD; |
| 1107 | } |
| 1108 | |
| 1109 | return PTD_STATE_QTD_DONE; |
| 1110 | } |
| 1111 | |
Arvid Brodin | 6d50c60 | 2011-08-21 08:29:26 +0200 | [diff] [blame] | 1112 | static void handle_done_ptds(struct usb_hcd *hcd) |
Arvid Brodin | 71a9f9d | 2011-04-26 21:48:30 +0200 | [diff] [blame] | 1113 | { |
| 1114 | struct isp1760_hcd *priv = hcd_to_priv(hcd); |
Arvid Brodin | 71a9f9d | 2011-04-26 21:48:30 +0200 | [diff] [blame] | 1115 | struct ptd ptd; |
| 1116 | struct isp1760_qh *qh; |
Arvid Brodin | 71a9f9d | 2011-04-26 21:48:30 +0200 | [diff] [blame] | 1117 | int slot; |
| 1118 | int state; |
Laurent Pinchart | ea0b1fa | 2015-01-21 00:55:55 +0200 | [diff] [blame] | 1119 | struct isp1760_slotinfo *slots; |
Arvid Brodin | 71a9f9d | 2011-04-26 21:48:30 +0200 | [diff] [blame] | 1120 | u32 ptd_offset; |
| 1121 | struct isp1760_qtd *qtd; |
| 1122 | int modified; |
Arvid Brodin | 6d50c60 | 2011-08-21 08:29:26 +0200 | [diff] [blame] | 1123 | int skip_map; |
Arvid Brodin | 71a9f9d | 2011-04-26 21:48:30 +0200 | [diff] [blame] | 1124 | |
Arvid Brodin | 6d50c60 | 2011-08-21 08:29:26 +0200 | [diff] [blame] | 1125 | skip_map = reg_read32(hcd->regs, HC_INT_PTD_SKIPMAP_REG); |
| 1126 | priv->int_done_map &= ~skip_map; |
| 1127 | skip_map = reg_read32(hcd->regs, HC_ATL_PTD_SKIPMAP_REG); |
| 1128 | priv->atl_done_map &= ~skip_map; |
Arvid Brodin | 71a9f9d | 2011-04-26 21:48:30 +0200 | [diff] [blame] | 1129 | |
Arvid Brodin | 6d50c60 | 2011-08-21 08:29:26 +0200 | [diff] [blame] | 1130 | modified = priv->int_done_map || priv->atl_done_map; |
Arvid Brodin | d05b6ec | 2011-05-20 00:17:45 +0200 | [diff] [blame] | 1131 | |
| 1132 | while (priv->int_done_map || priv->atl_done_map) { |
| 1133 | if (priv->int_done_map) { |
Arvid Brodin | 71a9f9d | 2011-04-26 21:48:30 +0200 | [diff] [blame] | 1134 | /* INT ptd */ |
Arvid Brodin | d05b6ec | 2011-05-20 00:17:45 +0200 | [diff] [blame] | 1135 | slot = __ffs(priv->int_done_map); |
| 1136 | priv->int_done_map &= ~(1 << slot); |
Arvid Brodin | 71a9f9d | 2011-04-26 21:48:30 +0200 | [diff] [blame] | 1137 | slots = priv->int_slots; |
Arvid Brodin | d05b6ec | 2011-05-20 00:17:45 +0200 | [diff] [blame] | 1138 | /* This should not trigger, and could be removed if |
| 1139 | noone have any problems with it triggering: */ |
| 1140 | if (!slots[slot].qh) { |
| 1141 | WARN_ON(1); |
Arvid Brodin | 71a9f9d | 2011-04-26 21:48:30 +0200 | [diff] [blame] | 1142 | continue; |
Arvid Brodin | d05b6ec | 2011-05-20 00:17:45 +0200 | [diff] [blame] | 1143 | } |
Arvid Brodin | 71a9f9d | 2011-04-26 21:48:30 +0200 | [diff] [blame] | 1144 | ptd_offset = INT_PTD_OFFSET; |
| 1145 | ptd_read(hcd->regs, INT_PTD_OFFSET, slot, &ptd); |
| 1146 | state = check_int_transfer(hcd, &ptd, |
| 1147 | slots[slot].qtd->urb); |
| 1148 | } else { |
| 1149 | /* ATL ptd */ |
Arvid Brodin | d05b6ec | 2011-05-20 00:17:45 +0200 | [diff] [blame] | 1150 | slot = __ffs(priv->atl_done_map); |
| 1151 | priv->atl_done_map &= ~(1 << slot); |
Arvid Brodin | 71a9f9d | 2011-04-26 21:48:30 +0200 | [diff] [blame] | 1152 | slots = priv->atl_slots; |
Arvid Brodin | d05b6ec | 2011-05-20 00:17:45 +0200 | [diff] [blame] | 1153 | /* This should not trigger, and could be removed if |
| 1154 | noone have any problems with it triggering: */ |
| 1155 | if (!slots[slot].qh) { |
| 1156 | WARN_ON(1); |
Arvid Brodin | 71a9f9d | 2011-04-26 21:48:30 +0200 | [diff] [blame] | 1157 | continue; |
Arvid Brodin | d05b6ec | 2011-05-20 00:17:45 +0200 | [diff] [blame] | 1158 | } |
Arvid Brodin | 71a9f9d | 2011-04-26 21:48:30 +0200 | [diff] [blame] | 1159 | ptd_offset = ATL_PTD_OFFSET; |
| 1160 | ptd_read(hcd->regs, ATL_PTD_OFFSET, slot, &ptd); |
| 1161 | state = check_atl_transfer(hcd, &ptd, |
| 1162 | slots[slot].qtd->urb); |
| 1163 | } |
| 1164 | |
| 1165 | qtd = slots[slot].qtd; |
| 1166 | slots[slot].qtd = NULL; |
| 1167 | qh = slots[slot].qh; |
| 1168 | slots[slot].qh = NULL; |
Arvid Brodin | 71a9f9d | 2011-04-26 21:48:30 +0200 | [diff] [blame] | 1169 | qh->slot = -1; |
| 1170 | |
| 1171 | WARN_ON(qtd->status != QTD_XFER_STARTED); |
| 1172 | |
| 1173 | switch (state) { |
| 1174 | case PTD_STATE_QTD_DONE: |
| 1175 | if ((usb_pipeint(qtd->urb->pipe)) && |
| 1176 | (qtd->urb->dev->speed != USB_SPEED_HIGH)) |
| 1177 | qtd->actual_length = |
| 1178 | FROM_DW3_SCS_NRBYTESTRANSFERRED(ptd.dw3); |
| 1179 | else |
| 1180 | qtd->actual_length = |
| 1181 | FROM_DW3_NRBYTESTRANSFERRED(ptd.dw3); |
| 1182 | |
| 1183 | qtd->status = QTD_XFER_COMPLETE; |
| 1184 | if (list_is_last(&qtd->qtd_list, &qh->qtd_list) || |
| 1185 | is_short_bulk(qtd)) |
| 1186 | qtd = NULL; |
| 1187 | else |
| 1188 | qtd = list_entry(qtd->qtd_list.next, |
| 1189 | typeof(*qtd), qtd_list); |
| 1190 | |
| 1191 | qh->toggle = FROM_DW3_DATA_TOGGLE(ptd.dw3); |
| 1192 | qh->ping = FROM_DW3_PING(ptd.dw3); |
| 1193 | break; |
| 1194 | |
| 1195 | case PTD_STATE_QTD_RELOAD: /* QTD_RETRY, for atls only */ |
| 1196 | qtd->status = QTD_PAYLOAD_ALLOC; |
| 1197 | ptd.dw0 |= DW0_VALID_BIT; |
| 1198 | /* RL counter = ERR counter */ |
| 1199 | ptd.dw3 &= ~TO_DW3_NAKCOUNT(0xf); |
| 1200 | ptd.dw3 |= TO_DW3_NAKCOUNT(FROM_DW2_RL(ptd.dw2)); |
| 1201 | ptd.dw3 &= ~TO_DW3_CERR(3); |
| 1202 | ptd.dw3 |= TO_DW3_CERR(ERR_COUNTER); |
| 1203 | qh->toggle = FROM_DW3_DATA_TOGGLE(ptd.dw3); |
| 1204 | qh->ping = FROM_DW3_PING(ptd.dw3); |
| 1205 | break; |
| 1206 | |
| 1207 | case PTD_STATE_URB_RETIRE: |
| 1208 | qtd->status = QTD_RETIRE; |
Arvid Brodin | 74ad602 | 2011-08-23 01:25:30 +0200 | [diff] [blame] | 1209 | if ((qtd->urb->dev->speed != USB_SPEED_HIGH) && |
| 1210 | (qtd->urb->status != -EPIPE) && |
| 1211 | (qtd->urb->status != -EREMOTEIO)) { |
| 1212 | qh->tt_buffer_dirty = 1; |
| 1213 | if (usb_hub_clear_tt_buffer(qtd->urb)) |
| 1214 | /* Clear failed; let's hope things work |
| 1215 | anyway */ |
| 1216 | qh->tt_buffer_dirty = 0; |
| 1217 | } |
Arvid Brodin | 71a9f9d | 2011-04-26 21:48:30 +0200 | [diff] [blame] | 1218 | qtd = NULL; |
| 1219 | qh->toggle = 0; |
| 1220 | qh->ping = 0; |
| 1221 | break; |
| 1222 | |
| 1223 | default: |
| 1224 | WARN_ON(1); |
| 1225 | continue; |
| 1226 | } |
| 1227 | |
| 1228 | if (qtd && (qtd->status == QTD_PAYLOAD_ALLOC)) { |
| 1229 | if (slots == priv->int_slots) { |
| 1230 | if (state == PTD_STATE_QTD_RELOAD) |
| 1231 | dev_err(hcd->self.controller, |
| 1232 | "%s: PTD_STATE_QTD_RELOAD on " |
| 1233 | "interrupt packet\n", __func__); |
| 1234 | if (state != PTD_STATE_QTD_RELOAD) |
| 1235 | create_ptd_int(qh, qtd, &ptd); |
| 1236 | } else { |
| 1237 | if (state != PTD_STATE_QTD_RELOAD) |
| 1238 | create_ptd_atl(qh, qtd, &ptd); |
| 1239 | } |
| 1240 | |
| 1241 | start_bus_transfer(hcd, ptd_offset, slot, slots, qtd, |
| 1242 | qh, &ptd); |
| 1243 | } |
| 1244 | } |
| 1245 | |
| 1246 | if (modified) |
| 1247 | schedule_ptds(hcd); |
Arvid Brodin | 6d50c60 | 2011-08-21 08:29:26 +0200 | [diff] [blame] | 1248 | } |
Arvid Brodin | 71a9f9d | 2011-04-26 21:48:30 +0200 | [diff] [blame] | 1249 | |
Arvid Brodin | 6d50c60 | 2011-08-21 08:29:26 +0200 | [diff] [blame] | 1250 | static irqreturn_t isp1760_irq(struct usb_hcd *hcd) |
| 1251 | { |
| 1252 | struct isp1760_hcd *priv = hcd_to_priv(hcd); |
| 1253 | u32 imask; |
| 1254 | irqreturn_t irqret = IRQ_NONE; |
Arvid Brodin | 71a9f9d | 2011-04-26 21:48:30 +0200 | [diff] [blame] | 1255 | |
Arvid Brodin | 6d50c60 | 2011-08-21 08:29:26 +0200 | [diff] [blame] | 1256 | spin_lock(&priv->lock); |
| 1257 | |
| 1258 | if (!(hcd->state & HC_STATE_RUNNING)) |
| 1259 | goto leave; |
| 1260 | |
| 1261 | imask = reg_read32(hcd->regs, HC_INTERRUPT_REG); |
| 1262 | if (unlikely(!imask)) |
| 1263 | goto leave; |
| 1264 | reg_write32(hcd->regs, HC_INTERRUPT_REG, imask); /* Clear */ |
| 1265 | |
| 1266 | priv->int_done_map |= reg_read32(hcd->regs, HC_INT_PTD_DONEMAP_REG); |
| 1267 | priv->atl_done_map |= reg_read32(hcd->regs, HC_ATL_PTD_DONEMAP_REG); |
| 1268 | |
| 1269 | handle_done_ptds(hcd); |
Arvid Brodin | 71a9f9d | 2011-04-26 21:48:30 +0200 | [diff] [blame] | 1270 | |
| 1271 | irqret = IRQ_HANDLED; |
| 1272 | leave: |
| 1273 | spin_unlock(&priv->lock); |
| 1274 | |
| 1275 | return irqret; |
| 1276 | } |
| 1277 | |
Arvid Brodin | 6d50c60 | 2011-08-21 08:29:26 +0200 | [diff] [blame] | 1278 | /* |
| 1279 | * Workaround for problem described in chip errata 2: |
| 1280 | * |
| 1281 | * Sometimes interrupts are not generated when ATL (not INT?) completion occurs. |
| 1282 | * One solution suggested in the errata is to use SOF interrupts _instead_of_ |
| 1283 | * ATL done interrupts (the "instead of" might be important since it seems |
| 1284 | * enabling ATL interrupts also causes the chip to sometimes - rarely - "forget" |
| 1285 | * to set the PTD's done bit in addition to not generating an interrupt!). |
| 1286 | * |
| 1287 | * So if we use SOF + ATL interrupts, we sometimes get stale PTDs since their |
| 1288 | * done bit is not being set. This is bad - it blocks the endpoint until reboot. |
| 1289 | * |
| 1290 | * If we use SOF interrupts only, we get latency between ptd completion and the |
| 1291 | * actual handling. This is very noticeable in testusb runs which takes several |
| 1292 | * minutes longer without ATL interrupts. |
| 1293 | * |
| 1294 | * A better solution is to run the code below every SLOT_CHECK_PERIOD ms. If it |
| 1295 | * finds active ATL slots which are older than SLOT_TIMEOUT ms, it checks the |
| 1296 | * slot's ACTIVE and VALID bits. If these are not set, the ptd is considered |
| 1297 | * completed and its done map bit is set. |
| 1298 | * |
| 1299 | * The values of SLOT_TIMEOUT and SLOT_CHECK_PERIOD have been arbitrarily chosen |
| 1300 | * not to cause too much lag when this HW bug occurs, while still hopefully |
| 1301 | * ensuring that the check does not falsely trigger. |
| 1302 | */ |
Arvid Brodin | 6477acc | 2011-08-21 08:29:28 +0200 | [diff] [blame] | 1303 | #define SLOT_TIMEOUT 300 |
Arvid Brodin | 6d50c60 | 2011-08-21 08:29:26 +0200 | [diff] [blame] | 1304 | #define SLOT_CHECK_PERIOD 200 |
| 1305 | static struct timer_list errata2_timer; |
| 1306 | |
Arvid Brodin | de9c630 | 2013-01-27 16:41:26 +0100 | [diff] [blame] | 1307 | static void errata2_function(unsigned long data) |
Arvid Brodin | 6d50c60 | 2011-08-21 08:29:26 +0200 | [diff] [blame] | 1308 | { |
| 1309 | struct usb_hcd *hcd = (struct usb_hcd *) data; |
| 1310 | struct isp1760_hcd *priv = hcd_to_priv(hcd); |
| 1311 | int slot; |
| 1312 | struct ptd ptd; |
| 1313 | unsigned long spinflags; |
| 1314 | |
| 1315 | spin_lock_irqsave(&priv->lock, spinflags); |
| 1316 | |
| 1317 | for (slot = 0; slot < 32; slot++) |
Arvid Brodin | 6477acc | 2011-08-21 08:29:28 +0200 | [diff] [blame] | 1318 | if (priv->atl_slots[slot].qh && time_after(jiffies, |
| 1319 | priv->atl_slots[slot].timestamp + |
| 1320 | SLOT_TIMEOUT * HZ / 1000)) { |
Arvid Brodin | 6d50c60 | 2011-08-21 08:29:26 +0200 | [diff] [blame] | 1321 | ptd_read(hcd->regs, ATL_PTD_OFFSET, slot, &ptd); |
| 1322 | if (!FROM_DW0_VALID(ptd.dw0) && |
| 1323 | !FROM_DW3_ACTIVE(ptd.dw3)) |
| 1324 | priv->atl_done_map |= 1 << slot; |
| 1325 | } |
| 1326 | |
Arvid Brodin | 6477acc | 2011-08-21 08:29:28 +0200 | [diff] [blame] | 1327 | if (priv->atl_done_map) |
| 1328 | handle_done_ptds(hcd); |
Arvid Brodin | 6d50c60 | 2011-08-21 08:29:26 +0200 | [diff] [blame] | 1329 | |
| 1330 | spin_unlock_irqrestore(&priv->lock, spinflags); |
| 1331 | |
| 1332 | errata2_timer.expires = jiffies + SLOT_CHECK_PERIOD * HZ / 1000; |
| 1333 | add_timer(&errata2_timer); |
| 1334 | } |
| 1335 | |
Arvid Brodin | 0ba7905 | 2011-08-21 08:29:25 +0200 | [diff] [blame] | 1336 | static int isp1760_run(struct usb_hcd *hcd) |
| 1337 | { |
| 1338 | int retval; |
| 1339 | u32 temp; |
| 1340 | u32 command; |
| 1341 | u32 chipid; |
| 1342 | |
| 1343 | hcd->uses_new_polling = 1; |
| 1344 | |
| 1345 | hcd->state = HC_STATE_RUNNING; |
| 1346 | |
| 1347 | /* Set PTD interrupt AND & OR maps */ |
| 1348 | reg_write32(hcd->regs, HC_ATL_IRQ_MASK_AND_REG, 0); |
| 1349 | reg_write32(hcd->regs, HC_ATL_IRQ_MASK_OR_REG, 0xffffffff); |
| 1350 | reg_write32(hcd->regs, HC_INT_IRQ_MASK_AND_REG, 0); |
| 1351 | reg_write32(hcd->regs, HC_INT_IRQ_MASK_OR_REG, 0xffffffff); |
| 1352 | reg_write32(hcd->regs, HC_ISO_IRQ_MASK_AND_REG, 0); |
| 1353 | reg_write32(hcd->regs, HC_ISO_IRQ_MASK_OR_REG, 0xffffffff); |
| 1354 | /* step 23 passed */ |
| 1355 | |
| 1356 | temp = reg_read32(hcd->regs, HC_HW_MODE_CTRL); |
| 1357 | reg_write32(hcd->regs, HC_HW_MODE_CTRL, temp | HW_GLOBAL_INTR_EN); |
| 1358 | |
| 1359 | command = reg_read32(hcd->regs, HC_USBCMD); |
| 1360 | command &= ~(CMD_LRESET|CMD_RESET); |
| 1361 | command |= CMD_RUN; |
| 1362 | reg_write32(hcd->regs, HC_USBCMD, command); |
| 1363 | |
| 1364 | retval = handshake(hcd, HC_USBCMD, CMD_RUN, CMD_RUN, 250 * 1000); |
| 1365 | if (retval) |
| 1366 | return retval; |
| 1367 | |
| 1368 | /* |
| 1369 | * XXX |
| 1370 | * Spec says to write FLAG_CF as last config action, priv code grabs |
| 1371 | * the semaphore while doing so. |
| 1372 | */ |
| 1373 | down_write(&ehci_cf_port_reset_rwsem); |
| 1374 | reg_write32(hcd->regs, HC_CONFIGFLAG, FLAG_CF); |
| 1375 | |
| 1376 | retval = handshake(hcd, HC_CONFIGFLAG, FLAG_CF, FLAG_CF, 250 * 1000); |
| 1377 | up_write(&ehci_cf_port_reset_rwsem); |
| 1378 | if (retval) |
| 1379 | return retval; |
| 1380 | |
Arvid Brodin | 6d50c60 | 2011-08-21 08:29:26 +0200 | [diff] [blame] | 1381 | init_timer(&errata2_timer); |
| 1382 | errata2_timer.function = errata2_function; |
| 1383 | errata2_timer.data = (unsigned long) hcd; |
| 1384 | errata2_timer.expires = jiffies + SLOT_CHECK_PERIOD * HZ / 1000; |
| 1385 | add_timer(&errata2_timer); |
| 1386 | |
Arvid Brodin | 0ba7905 | 2011-08-21 08:29:25 +0200 | [diff] [blame] | 1387 | chipid = reg_read32(hcd->regs, HC_CHIP_ID_REG); |
| 1388 | dev_info(hcd->self.controller, "USB ISP %04x HW rev. %d started\n", |
| 1389 | chipid & 0xffff, chipid >> 16); |
| 1390 | |
| 1391 | /* PTD Register Init Part 2, Step 28 */ |
| 1392 | |
| 1393 | /* Setup registers controlling PTD checking */ |
| 1394 | reg_write32(hcd->regs, HC_ATL_PTD_LASTPTD_REG, 0x80000000); |
| 1395 | reg_write32(hcd->regs, HC_INT_PTD_LASTPTD_REG, 0x80000000); |
| 1396 | reg_write32(hcd->regs, HC_ISO_PTD_LASTPTD_REG, 0x00000001); |
| 1397 | reg_write32(hcd->regs, HC_ATL_PTD_SKIPMAP_REG, 0xffffffff); |
| 1398 | reg_write32(hcd->regs, HC_INT_PTD_SKIPMAP_REG, 0xffffffff); |
| 1399 | reg_write32(hcd->regs, HC_ISO_PTD_SKIPMAP_REG, 0xffffffff); |
| 1400 | reg_write32(hcd->regs, HC_BUFFER_STATUS_REG, |
| 1401 | ATL_BUF_FILL | INT_BUF_FILL); |
| 1402 | |
| 1403 | /* GRR this is run-once init(), being done every time the HC starts. |
| 1404 | * So long as they're part of class devices, we can't do it init() |
| 1405 | * since the class device isn't created that early. |
| 1406 | */ |
| 1407 | return 0; |
| 1408 | } |
| 1409 | |
Arvid Brodin | 3453773 | 2011-04-26 21:47:37 +0200 | [diff] [blame] | 1410 | static int qtd_fill(struct isp1760_qtd *qtd, void *databuffer, size_t len) |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1411 | { |
Arvid Brodin | 3453773 | 2011-04-26 21:47:37 +0200 | [diff] [blame] | 1412 | qtd->data_buffer = databuffer; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1413 | |
Arvid Brodin | 3453773 | 2011-04-26 21:47:37 +0200 | [diff] [blame] | 1414 | if (len > MAX_PAYLOAD_SIZE) |
| 1415 | len = MAX_PAYLOAD_SIZE; |
| 1416 | qtd->length = len; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1417 | |
Arvid Brodin | 3453773 | 2011-04-26 21:47:37 +0200 | [diff] [blame] | 1418 | return qtd->length; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1419 | } |
| 1420 | |
Arvid Brodin | 3453773 | 2011-04-26 21:47:37 +0200 | [diff] [blame] | 1421 | static void qtd_list_free(struct list_head *qtd_list) |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1422 | { |
Arvid Brodin | 3453773 | 2011-04-26 21:47:37 +0200 | [diff] [blame] | 1423 | struct isp1760_qtd *qtd, *qtd_next; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1424 | |
Arvid Brodin | 3453773 | 2011-04-26 21:47:37 +0200 | [diff] [blame] | 1425 | list_for_each_entry_safe(qtd, qtd_next, qtd_list, qtd_list) { |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1426 | list_del(&qtd->qtd_list); |
Arvid Brodin | 3453773 | 2011-04-26 21:47:37 +0200 | [diff] [blame] | 1427 | qtd_free(qtd); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1428 | } |
| 1429 | } |
| 1430 | |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1431 | /* |
Arvid Brodin | 3453773 | 2011-04-26 21:47:37 +0200 | [diff] [blame] | 1432 | * Packetize urb->transfer_buffer into list of packets of size wMaxPacketSize. |
| 1433 | * Also calculate the PID type (SETUP/IN/OUT) for each packet. |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1434 | */ |
Arvid Brodin | 6bda21b | 2011-02-26 22:06:37 +0100 | [diff] [blame] | 1435 | #define max_packet(wMaxPacketSize) ((wMaxPacketSize) & 0x07ff) |
Arvid Brodin | 3453773 | 2011-04-26 21:47:37 +0200 | [diff] [blame] | 1436 | static void packetize_urb(struct usb_hcd *hcd, |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1437 | struct urb *urb, struct list_head *head, gfp_t flags) |
| 1438 | { |
Arvid Brodin | fd436ae | 2011-02-26 22:03:49 +0100 | [diff] [blame] | 1439 | struct isp1760_qtd *qtd; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1440 | void *buf; |
Arvid Brodin | 3453773 | 2011-04-26 21:47:37 +0200 | [diff] [blame] | 1441 | int len, maxpacketsize; |
| 1442 | u8 packet_type; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1443 | |
| 1444 | /* |
| 1445 | * URBs map to sequences of QTDs: one logical transaction |
| 1446 | */ |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1447 | |
Arvid Brodin | 3453773 | 2011-04-26 21:47:37 +0200 | [diff] [blame] | 1448 | if (!urb->transfer_buffer && urb->transfer_buffer_length) { |
| 1449 | /* XXX This looks like usb storage / SCSI bug */ |
| 1450 | dev_err(hcd->self.controller, |
| 1451 | "buf is null, dma is %08lx len is %d\n", |
| 1452 | (long unsigned)urb->transfer_dma, |
| 1453 | urb->transfer_buffer_length); |
| 1454 | WARN_ON(1); |
| 1455 | } |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1456 | |
Arvid Brodin | 3453773 | 2011-04-26 21:47:37 +0200 | [diff] [blame] | 1457 | if (usb_pipein(urb->pipe)) |
| 1458 | packet_type = IN_PID; |
| 1459 | else |
| 1460 | packet_type = OUT_PID; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1461 | |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1462 | if (usb_pipecontrol(urb->pipe)) { |
Arvid Brodin | 3453773 | 2011-04-26 21:47:37 +0200 | [diff] [blame] | 1463 | qtd = qtd_alloc(flags, urb, SETUP_PID); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1464 | if (!qtd) |
| 1465 | goto cleanup; |
Arvid Brodin | 3453773 | 2011-04-26 21:47:37 +0200 | [diff] [blame] | 1466 | qtd_fill(qtd, urb->setup_packet, sizeof(struct usb_ctrlrequest)); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1467 | list_add_tail(&qtd->qtd_list, head); |
| 1468 | |
| 1469 | /* for zero length DATA stages, STATUS is always IN */ |
Arvid Brodin | 3453773 | 2011-04-26 21:47:37 +0200 | [diff] [blame] | 1470 | if (urb->transfer_buffer_length == 0) |
| 1471 | packet_type = IN_PID; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1472 | } |
| 1473 | |
Arvid Brodin | 3453773 | 2011-04-26 21:47:37 +0200 | [diff] [blame] | 1474 | maxpacketsize = max_packet(usb_maxpacket(urb->dev, urb->pipe, |
| 1475 | usb_pipeout(urb->pipe))); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1476 | |
| 1477 | /* |
| 1478 | * buffer gets wrapped in one or more qtds; |
| 1479 | * last one may be "short" (including zero len) |
| 1480 | * and may serve as a control status ack |
| 1481 | */ |
Arvid Brodin | 3453773 | 2011-04-26 21:47:37 +0200 | [diff] [blame] | 1482 | buf = urb->transfer_buffer; |
| 1483 | len = urb->transfer_buffer_length; |
| 1484 | |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1485 | for (;;) { |
| 1486 | int this_qtd_len; |
| 1487 | |
Arvid Brodin | 3453773 | 2011-04-26 21:47:37 +0200 | [diff] [blame] | 1488 | qtd = qtd_alloc(flags, urb, packet_type); |
| 1489 | if (!qtd) |
| 1490 | goto cleanup; |
| 1491 | this_qtd_len = qtd_fill(qtd, buf, len); |
| 1492 | list_add_tail(&qtd->qtd_list, head); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1493 | |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1494 | len -= this_qtd_len; |
| 1495 | buf += this_qtd_len; |
| 1496 | |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1497 | if (len <= 0) |
| 1498 | break; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1499 | } |
| 1500 | |
| 1501 | /* |
| 1502 | * control requests may need a terminating data "status" ack; |
| 1503 | * bulk ones may need a terminating short packet (zero length). |
| 1504 | */ |
| 1505 | if (urb->transfer_buffer_length != 0) { |
| 1506 | int one_more = 0; |
| 1507 | |
| 1508 | if (usb_pipecontrol(urb->pipe)) { |
| 1509 | one_more = 1; |
Arvid Brodin | 3453773 | 2011-04-26 21:47:37 +0200 | [diff] [blame] | 1510 | if (packet_type == IN_PID) |
| 1511 | packet_type = OUT_PID; |
| 1512 | else |
| 1513 | packet_type = IN_PID; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1514 | } else if (usb_pipebulk(urb->pipe) |
| 1515 | && (urb->transfer_flags & URB_ZERO_PACKET) |
Arvid Brodin | 3453773 | 2011-04-26 21:47:37 +0200 | [diff] [blame] | 1516 | && !(urb->transfer_buffer_length % |
| 1517 | maxpacketsize)) { |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1518 | one_more = 1; |
| 1519 | } |
| 1520 | if (one_more) { |
Arvid Brodin | 3453773 | 2011-04-26 21:47:37 +0200 | [diff] [blame] | 1521 | qtd = qtd_alloc(flags, urb, packet_type); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1522 | if (!qtd) |
| 1523 | goto cleanup; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1524 | |
| 1525 | /* never any data in such packets */ |
Arvid Brodin | 3453773 | 2011-04-26 21:47:37 +0200 | [diff] [blame] | 1526 | qtd_fill(qtd, NULL, 0); |
| 1527 | list_add_tail(&qtd->qtd_list, head); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1528 | } |
| 1529 | } |
| 1530 | |
Arvid Brodin | 3453773 | 2011-04-26 21:47:37 +0200 | [diff] [blame] | 1531 | return; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1532 | |
| 1533 | cleanup: |
Arvid Brodin | 3453773 | 2011-04-26 21:47:37 +0200 | [diff] [blame] | 1534 | qtd_list_free(head); |
| 1535 | } |
| 1536 | |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1537 | static int isp1760_urb_enqueue(struct usb_hcd *hcd, struct urb *urb, |
| 1538 | gfp_t mem_flags) |
| 1539 | { |
Arvid Brodin | 71a9f9d | 2011-04-26 21:48:30 +0200 | [diff] [blame] | 1540 | struct isp1760_hcd *priv = hcd_to_priv(hcd); |
| 1541 | struct list_head *ep_queue; |
| 1542 | struct isp1760_qh *qh, *qhit; |
| 1543 | unsigned long spinflags; |
| 1544 | LIST_HEAD(new_qtds); |
| 1545 | int retval; |
| 1546 | int qh_in_queue; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1547 | |
| 1548 | switch (usb_pipetype(urb->pipe)) { |
| 1549 | case PIPE_CONTROL: |
Arvid Brodin | e08f6a27 | 2011-11-23 18:10:41 +0100 | [diff] [blame] | 1550 | ep_queue = &priv->qh_list[QH_CONTROL]; |
Arvid Brodin | 71a9f9d | 2011-04-26 21:48:30 +0200 | [diff] [blame] | 1551 | break; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1552 | case PIPE_BULK: |
Arvid Brodin | e08f6a27 | 2011-11-23 18:10:41 +0100 | [diff] [blame] | 1553 | ep_queue = &priv->qh_list[QH_BULK]; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1554 | break; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1555 | case PIPE_INTERRUPT: |
Arvid Brodin | 71a9f9d | 2011-04-26 21:48:30 +0200 | [diff] [blame] | 1556 | if (urb->interval < 0) |
| 1557 | return -EINVAL; |
| 1558 | /* FIXME: Check bandwidth */ |
Arvid Brodin | e08f6a27 | 2011-11-23 18:10:41 +0100 | [diff] [blame] | 1559 | ep_queue = &priv->qh_list[QH_INTERRUPT]; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1560 | break; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1561 | case PIPE_ISOCHRONOUS: |
Arvid Brodin | 71a9f9d | 2011-04-26 21:48:30 +0200 | [diff] [blame] | 1562 | dev_err(hcd->self.controller, "%s: isochronous USB packets " |
| 1563 | "not yet supported\n", |
| 1564 | __func__); |
| 1565 | return -EPIPE; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1566 | default: |
Arvid Brodin | 71a9f9d | 2011-04-26 21:48:30 +0200 | [diff] [blame] | 1567 | dev_err(hcd->self.controller, "%s: unknown pipe type\n", |
| 1568 | __func__); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1569 | return -EPIPE; |
| 1570 | } |
| 1571 | |
Arvid Brodin | 71a9f9d | 2011-04-26 21:48:30 +0200 | [diff] [blame] | 1572 | if (usb_pipein(urb->pipe)) |
| 1573 | urb->actual_length = 0; |
| 1574 | |
| 1575 | packetize_urb(hcd, urb, &new_qtds, mem_flags); |
| 1576 | if (list_empty(&new_qtds)) |
Arvid Brodin | 3453773 | 2011-04-26 21:47:37 +0200 | [diff] [blame] | 1577 | return -ENOMEM; |
| 1578 | |
Arvid Brodin | 71a9f9d | 2011-04-26 21:48:30 +0200 | [diff] [blame] | 1579 | retval = 0; |
| 1580 | spin_lock_irqsave(&priv->lock, spinflags); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1581 | |
Arvid Brodin | 71a9f9d | 2011-04-26 21:48:30 +0200 | [diff] [blame] | 1582 | if (!test_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags)) { |
| 1583 | retval = -ESHUTDOWN; |
Michael Grzeschik | 8788fa0 | 2012-04-05 14:56:10 +0200 | [diff] [blame] | 1584 | qtd_list_free(&new_qtds); |
Arvid Brodin | 71a9f9d | 2011-04-26 21:48:30 +0200 | [diff] [blame] | 1585 | goto out; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1586 | } |
Arvid Brodin | 71a9f9d | 2011-04-26 21:48:30 +0200 | [diff] [blame] | 1587 | retval = usb_hcd_link_urb_to_ep(hcd, urb); |
Michael Grzeschik | 8788fa0 | 2012-04-05 14:56:10 +0200 | [diff] [blame] | 1588 | if (retval) { |
| 1589 | qtd_list_free(&new_qtds); |
Arvid Brodin | 71a9f9d | 2011-04-26 21:48:30 +0200 | [diff] [blame] | 1590 | goto out; |
Michael Grzeschik | 8788fa0 | 2012-04-05 14:56:10 +0200 | [diff] [blame] | 1591 | } |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1592 | |
Arvid Brodin | 71a9f9d | 2011-04-26 21:48:30 +0200 | [diff] [blame] | 1593 | qh = urb->ep->hcpriv; |
| 1594 | if (qh) { |
| 1595 | qh_in_queue = 0; |
| 1596 | list_for_each_entry(qhit, ep_queue, qh_list) { |
| 1597 | if (qhit == qh) { |
| 1598 | qh_in_queue = 1; |
Warren Free | 0afb20e | 2009-05-08 10:27:08 +0200 | [diff] [blame] | 1599 | break; |
Arvid Brodin | 71a9f9d | 2011-04-26 21:48:30 +0200 | [diff] [blame] | 1600 | } |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1601 | } |
Arvid Brodin | 71a9f9d | 2011-04-26 21:48:30 +0200 | [diff] [blame] | 1602 | if (!qh_in_queue) |
| 1603 | list_add_tail(&qh->qh_list, ep_queue); |
| 1604 | } else { |
| 1605 | qh = qh_alloc(GFP_ATOMIC); |
| 1606 | if (!qh) { |
| 1607 | retval = -ENOMEM; |
Arvid Brodin | 38679b7 | 2011-08-21 08:29:27 +0200 | [diff] [blame] | 1608 | usb_hcd_unlink_urb_from_ep(hcd, urb); |
Michael Grzeschik | 8788fa0 | 2012-04-05 14:56:10 +0200 | [diff] [blame] | 1609 | qtd_list_free(&new_qtds); |
Arvid Brodin | 71a9f9d | 2011-04-26 21:48:30 +0200 | [diff] [blame] | 1610 | goto out; |
| 1611 | } |
| 1612 | list_add_tail(&qh->qh_list, ep_queue); |
| 1613 | urb->ep->hcpriv = qh; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1614 | } |
| 1615 | |
Arvid Brodin | 71a9f9d | 2011-04-26 21:48:30 +0200 | [diff] [blame] | 1616 | list_splice_tail(&new_qtds, &qh->qtd_list); |
| 1617 | schedule_ptds(hcd); |
| 1618 | |
| 1619 | out: |
| 1620 | spin_unlock_irqrestore(&priv->lock, spinflags); |
| 1621 | return retval; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1622 | } |
| 1623 | |
Arvid Brodin | d05b6ec | 2011-05-20 00:17:45 +0200 | [diff] [blame] | 1624 | static void kill_transfer(struct usb_hcd *hcd, struct urb *urb, |
| 1625 | struct isp1760_qh *qh) |
| 1626 | { |
| 1627 | struct isp1760_hcd *priv = hcd_to_priv(hcd); |
| 1628 | int skip_map; |
| 1629 | |
| 1630 | WARN_ON(qh->slot == -1); |
| 1631 | |
| 1632 | /* We need to forcefully reclaim the slot since some transfers never |
| 1633 | return, e.g. interrupt transfers and NAKed bulk transfers. */ |
Arvid Brodin | 8b1ab60 | 2011-06-17 18:45:37 +0200 | [diff] [blame] | 1634 | if (usb_pipecontrol(urb->pipe) || usb_pipebulk(urb->pipe)) { |
Arvid Brodin | d05b6ec | 2011-05-20 00:17:45 +0200 | [diff] [blame] | 1635 | skip_map = reg_read32(hcd->regs, HC_ATL_PTD_SKIPMAP_REG); |
| 1636 | skip_map |= (1 << qh->slot); |
| 1637 | reg_write32(hcd->regs, HC_ATL_PTD_SKIPMAP_REG, skip_map); |
| 1638 | priv->atl_slots[qh->slot].qh = NULL; |
| 1639 | priv->atl_slots[qh->slot].qtd = NULL; |
| 1640 | } else { |
| 1641 | skip_map = reg_read32(hcd->regs, HC_INT_PTD_SKIPMAP_REG); |
| 1642 | skip_map |= (1 << qh->slot); |
| 1643 | reg_write32(hcd->regs, HC_INT_PTD_SKIPMAP_REG, skip_map); |
| 1644 | priv->int_slots[qh->slot].qh = NULL; |
| 1645 | priv->int_slots[qh->slot].qtd = NULL; |
| 1646 | } |
| 1647 | |
| 1648 | qh->slot = -1; |
Arvid Brodin | d05b6ec | 2011-05-20 00:17:45 +0200 | [diff] [blame] | 1649 | } |
| 1650 | |
Arvid Brodin | 74ad602 | 2011-08-23 01:25:30 +0200 | [diff] [blame] | 1651 | /* |
| 1652 | * Retire the qtds beginning at 'qtd' and belonging all to the same urb, killing |
| 1653 | * any active transfer belonging to the urb in the process. |
| 1654 | */ |
| 1655 | static void dequeue_urb_from_qtd(struct usb_hcd *hcd, struct isp1760_qh *qh, |
| 1656 | struct isp1760_qtd *qtd) |
| 1657 | { |
| 1658 | struct urb *urb; |
| 1659 | int urb_was_running; |
| 1660 | |
| 1661 | urb = qtd->urb; |
| 1662 | urb_was_running = 0; |
| 1663 | list_for_each_entry_from(qtd, &qh->qtd_list, qtd_list) { |
| 1664 | if (qtd->urb != urb) |
| 1665 | break; |
| 1666 | |
| 1667 | if (qtd->status >= QTD_XFER_STARTED) |
| 1668 | urb_was_running = 1; |
| 1669 | if (last_qtd_of_urb(qtd, qh) && |
| 1670 | (qtd->status >= QTD_XFER_COMPLETE)) |
| 1671 | urb_was_running = 0; |
| 1672 | |
| 1673 | if (qtd->status == QTD_XFER_STARTED) |
| 1674 | kill_transfer(hcd, urb, qh); |
| 1675 | qtd->status = QTD_RETIRE; |
| 1676 | } |
| 1677 | |
| 1678 | if ((urb->dev->speed != USB_SPEED_HIGH) && urb_was_running) { |
| 1679 | qh->tt_buffer_dirty = 1; |
| 1680 | if (usb_hub_clear_tt_buffer(urb)) |
| 1681 | /* Clear failed; let's hope things work anyway */ |
| 1682 | qh->tt_buffer_dirty = 0; |
| 1683 | } |
| 1684 | } |
| 1685 | |
Arvid Brodin | 71a9f9d | 2011-04-26 21:48:30 +0200 | [diff] [blame] | 1686 | static int isp1760_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, |
| 1687 | int status) |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1688 | { |
Arvid Brodin | 6bda21b | 2011-02-26 22:06:37 +0100 | [diff] [blame] | 1689 | struct isp1760_hcd *priv = hcd_to_priv(hcd); |
Arvid Brodin | d05b6ec | 2011-05-20 00:17:45 +0200 | [diff] [blame] | 1690 | unsigned long spinflags; |
Arvid Brodin | 71a9f9d | 2011-04-26 21:48:30 +0200 | [diff] [blame] | 1691 | struct isp1760_qh *qh; |
| 1692 | struct isp1760_qtd *qtd; |
Arvid Brodin | 71a9f9d | 2011-04-26 21:48:30 +0200 | [diff] [blame] | 1693 | int retval = 0; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1694 | |
Arvid Brodin | 71a9f9d | 2011-04-26 21:48:30 +0200 | [diff] [blame] | 1695 | spin_lock_irqsave(&priv->lock, spinflags); |
Arvid Brodin | 17d3e14 | 2011-07-20 03:13:46 +0200 | [diff] [blame] | 1696 | retval = usb_hcd_check_unlink_urb(hcd, urb, status); |
| 1697 | if (retval) |
| 1698 | goto out; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1699 | |
Arvid Brodin | 71a9f9d | 2011-04-26 21:48:30 +0200 | [diff] [blame] | 1700 | qh = urb->ep->hcpriv; |
| 1701 | if (!qh) { |
| 1702 | retval = -EINVAL; |
| 1703 | goto out; |
| 1704 | } |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1705 | |
Arvid Brodin | d05b6ec | 2011-05-20 00:17:45 +0200 | [diff] [blame] | 1706 | list_for_each_entry(qtd, &qh->qtd_list, qtd_list) |
| 1707 | if (qtd->urb == urb) { |
Arvid Brodin | 74ad602 | 2011-08-23 01:25:30 +0200 | [diff] [blame] | 1708 | dequeue_urb_from_qtd(hcd, qh, qtd); |
Michael Grzeschik | 8cb2268 | 2012-04-18 09:58:23 +0200 | [diff] [blame] | 1709 | list_move(&qtd->qtd_list, &qh->qtd_list); |
Arvid Brodin | 74ad602 | 2011-08-23 01:25:30 +0200 | [diff] [blame] | 1710 | break; |
Arvid Brodin | d05b6ec | 2011-05-20 00:17:45 +0200 | [diff] [blame] | 1711 | } |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1712 | |
Arvid Brodin | 71a9f9d | 2011-04-26 21:48:30 +0200 | [diff] [blame] | 1713 | urb->status = status; |
| 1714 | schedule_ptds(hcd); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1715 | |
Arvid Brodin | 71a9f9d | 2011-04-26 21:48:30 +0200 | [diff] [blame] | 1716 | out: |
| 1717 | spin_unlock_irqrestore(&priv->lock, spinflags); |
Arvid Brodin | 71a9f9d | 2011-04-26 21:48:30 +0200 | [diff] [blame] | 1718 | return retval; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1719 | } |
| 1720 | |
Arvid Brodin | 079cdb0 | 2011-05-20 00:17:34 +0200 | [diff] [blame] | 1721 | static void isp1760_endpoint_disable(struct usb_hcd *hcd, |
| 1722 | struct usb_host_endpoint *ep) |
| 1723 | { |
| 1724 | struct isp1760_hcd *priv = hcd_to_priv(hcd); |
Arvid Brodin | d05b6ec | 2011-05-20 00:17:45 +0200 | [diff] [blame] | 1725 | unsigned long spinflags; |
Arvid Brodin | c64391f | 2011-11-23 18:13:02 +0100 | [diff] [blame] | 1726 | struct isp1760_qh *qh, *qh_iter; |
| 1727 | int i; |
Arvid Brodin | 079cdb0 | 2011-05-20 00:17:34 +0200 | [diff] [blame] | 1728 | |
| 1729 | spin_lock_irqsave(&priv->lock, spinflags); |
Arvid Brodin | d05b6ec | 2011-05-20 00:17:45 +0200 | [diff] [blame] | 1730 | |
Arvid Brodin | 079cdb0 | 2011-05-20 00:17:34 +0200 | [diff] [blame] | 1731 | qh = ep->hcpriv; |
| 1732 | if (!qh) |
| 1733 | goto out; |
| 1734 | |
Arvid Brodin | c64391f | 2011-11-23 18:13:02 +0100 | [diff] [blame] | 1735 | WARN_ON(!list_empty(&qh->qtd_list)); |
Arvid Brodin | d05b6ec | 2011-05-20 00:17:45 +0200 | [diff] [blame] | 1736 | |
Arvid Brodin | c64391f | 2011-11-23 18:13:02 +0100 | [diff] [blame] | 1737 | for (i = 0; i < QH_END; i++) |
| 1738 | list_for_each_entry(qh_iter, &priv->qh_list[i], qh_list) |
| 1739 | if (qh_iter == qh) { |
| 1740 | list_del(&qh_iter->qh_list); |
| 1741 | i = QH_END; |
| 1742 | break; |
| 1743 | } |
| 1744 | qh_free(qh); |
Arvid Brodin | 079cdb0 | 2011-05-20 00:17:34 +0200 | [diff] [blame] | 1745 | ep->hcpriv = NULL; |
Arvid Brodin | 079cdb0 | 2011-05-20 00:17:34 +0200 | [diff] [blame] | 1746 | |
Arvid Brodin | d05b6ec | 2011-05-20 00:17:45 +0200 | [diff] [blame] | 1747 | schedule_ptds(hcd); |
| 1748 | |
Arvid Brodin | 079cdb0 | 2011-05-20 00:17:34 +0200 | [diff] [blame] | 1749 | out: |
| 1750 | spin_unlock_irqrestore(&priv->lock, spinflags); |
| 1751 | } |
| 1752 | |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1753 | static int isp1760_hub_status_data(struct usb_hcd *hcd, char *buf) |
| 1754 | { |
| 1755 | struct isp1760_hcd *priv = hcd_to_priv(hcd); |
| 1756 | u32 temp, status = 0; |
| 1757 | u32 mask; |
| 1758 | int retval = 1; |
| 1759 | unsigned long flags; |
| 1760 | |
Rafael J. Wysocki | 464ed18 | 2014-12-19 15:37:54 +0100 | [diff] [blame] | 1761 | /* if !PM, root hub timers won't get shut down ... */ |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1762 | if (!HC_IS_RUNNING(hcd->state)) |
| 1763 | return 0; |
| 1764 | |
| 1765 | /* init status to no-changes */ |
| 1766 | buf[0] = 0; |
| 1767 | mask = PORT_CSC; |
| 1768 | |
| 1769 | spin_lock_irqsave(&priv->lock, flags); |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 1770 | temp = reg_read32(hcd->regs, HC_PORTSC1); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1771 | |
| 1772 | if (temp & PORT_OWNER) { |
| 1773 | if (temp & PORT_CSC) { |
| 1774 | temp &= ~PORT_CSC; |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 1775 | reg_write32(hcd->regs, HC_PORTSC1, temp); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1776 | goto done; |
| 1777 | } |
| 1778 | } |
| 1779 | |
| 1780 | /* |
| 1781 | * Return status information even for ports with OWNER set. |
Petr Mladek | 37ebb54 | 2014-09-19 17:32:23 +0200 | [diff] [blame] | 1782 | * Otherwise hub_wq wouldn't see the disconnect event when a |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1783 | * high-speed device is switched over to the companion |
| 1784 | * controller by the user. |
| 1785 | */ |
| 1786 | |
| 1787 | if ((temp & mask) != 0 |
| 1788 | || ((temp & PORT_RESUME) != 0 |
| 1789 | && time_after_eq(jiffies, |
| 1790 | priv->reset_done))) { |
| 1791 | buf [0] |= 1 << (0 + 1); |
| 1792 | status = STS_PCD; |
| 1793 | } |
| 1794 | /* FIXME autosuspend idle root hubs */ |
| 1795 | done: |
| 1796 | spin_unlock_irqrestore(&priv->lock, flags); |
| 1797 | return status ? retval : 0; |
| 1798 | } |
| 1799 | |
| 1800 | static void isp1760_hub_descriptor(struct isp1760_hcd *priv, |
| 1801 | struct usb_hub_descriptor *desc) |
| 1802 | { |
| 1803 | int ports = HCS_N_PORTS(priv->hcs_params); |
| 1804 | u16 temp; |
| 1805 | |
| 1806 | desc->bDescriptorType = 0x29; |
| 1807 | /* priv 1.0, 2.3.9 says 20ms max */ |
| 1808 | desc->bPwrOn2PwrGood = 10; |
| 1809 | desc->bHubContrCurrent = 0; |
| 1810 | |
| 1811 | desc->bNbrPorts = ports; |
| 1812 | temp = 1 + (ports / 8); |
| 1813 | desc->bDescLength = 7 + 2 * temp; |
| 1814 | |
Sarah Sharp | da13051 | 2010-11-30 15:55:51 -0800 | [diff] [blame] | 1815 | /* ports removable, and usb 1.0 legacy PortPwrCtrlMask */ |
John Youn | dbe79bb | 2001-09-17 00:00:00 -0700 | [diff] [blame] | 1816 | memset(&desc->u.hs.DeviceRemovable[0], 0, temp); |
| 1817 | memset(&desc->u.hs.DeviceRemovable[temp], 0xff, temp); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1818 | |
| 1819 | /* per-port overcurrent reporting */ |
| 1820 | temp = 0x0008; |
| 1821 | if (HCS_PPC(priv->hcs_params)) |
| 1822 | /* per-port power control */ |
| 1823 | temp |= 0x0001; |
| 1824 | else |
| 1825 | /* no power switching */ |
| 1826 | temp |= 0x0002; |
| 1827 | desc->wHubCharacteristics = cpu_to_le16(temp); |
| 1828 | } |
| 1829 | |
| 1830 | #define PORT_WAKE_BITS (PORT_WKOC_E|PORT_WKDISC_E|PORT_WKCONN_E) |
| 1831 | |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 1832 | static int check_reset_complete(struct usb_hcd *hcd, int index, |
| 1833 | int port_status) |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1834 | { |
| 1835 | if (!(port_status & PORT_CONNECT)) |
| 1836 | return port_status; |
| 1837 | |
| 1838 | /* if reset finished and it's still not enabled -- handoff */ |
| 1839 | if (!(port_status & PORT_PE)) { |
| 1840 | |
Arvid Brodin | 71a9f9d | 2011-04-26 21:48:30 +0200 | [diff] [blame] | 1841 | dev_info(hcd->self.controller, |
Arvid Brodin | 6bda21b | 2011-02-26 22:06:37 +0100 | [diff] [blame] | 1842 | "port %d full speed --> companion\n", |
| 1843 | index + 1); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1844 | |
| 1845 | port_status |= PORT_OWNER; |
| 1846 | port_status &= ~PORT_RWC_BITS; |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 1847 | reg_write32(hcd->regs, HC_PORTSC1, port_status); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1848 | |
| 1849 | } else |
Arvid Brodin | 71a9f9d | 2011-04-26 21:48:30 +0200 | [diff] [blame] | 1850 | dev_info(hcd->self.controller, "port %d high speed\n", |
Arvid Brodin | 6bda21b | 2011-02-26 22:06:37 +0100 | [diff] [blame] | 1851 | index + 1); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1852 | |
| 1853 | return port_status; |
| 1854 | } |
| 1855 | |
| 1856 | static int isp1760_hub_control(struct usb_hcd *hcd, u16 typeReq, |
| 1857 | u16 wValue, u16 wIndex, char *buf, u16 wLength) |
| 1858 | { |
| 1859 | struct isp1760_hcd *priv = hcd_to_priv(hcd); |
| 1860 | int ports = HCS_N_PORTS(priv->hcs_params); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1861 | u32 temp, status; |
| 1862 | unsigned long flags; |
| 1863 | int retval = 0; |
| 1864 | unsigned selector; |
| 1865 | |
| 1866 | /* |
| 1867 | * FIXME: support SetPortFeatures USB_PORT_FEAT_INDICATOR. |
| 1868 | * HCS_INDICATOR may say we can change LEDs to off/amber/green. |
| 1869 | * (track current state ourselves) ... blink for diagnostics, |
| 1870 | * power, "this is the one", etc. EHCI spec supports this. |
| 1871 | */ |
| 1872 | |
| 1873 | spin_lock_irqsave(&priv->lock, flags); |
| 1874 | switch (typeReq) { |
| 1875 | case ClearHubFeature: |
| 1876 | switch (wValue) { |
| 1877 | case C_HUB_LOCAL_POWER: |
| 1878 | case C_HUB_OVER_CURRENT: |
| 1879 | /* no hub-wide feature/status flags */ |
| 1880 | break; |
| 1881 | default: |
| 1882 | goto error; |
| 1883 | } |
| 1884 | break; |
| 1885 | case ClearPortFeature: |
| 1886 | if (!wIndex || wIndex > ports) |
| 1887 | goto error; |
| 1888 | wIndex--; |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 1889 | temp = reg_read32(hcd->regs, HC_PORTSC1); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1890 | |
| 1891 | /* |
| 1892 | * Even if OWNER is set, so the port is owned by the |
Petr Mladek | 37ebb54 | 2014-09-19 17:32:23 +0200 | [diff] [blame] | 1893 | * companion controller, hub_wq needs to be able to clear |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1894 | * the port-change status bits (especially |
Alan Stern | 749da5f | 2010-03-04 17:05:08 -0500 | [diff] [blame] | 1895 | * USB_PORT_STAT_C_CONNECTION). |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1896 | */ |
| 1897 | |
| 1898 | switch (wValue) { |
| 1899 | case USB_PORT_FEAT_ENABLE: |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 1900 | reg_write32(hcd->regs, HC_PORTSC1, temp & ~PORT_PE); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1901 | break; |
| 1902 | case USB_PORT_FEAT_C_ENABLE: |
| 1903 | /* XXX error? */ |
| 1904 | break; |
| 1905 | case USB_PORT_FEAT_SUSPEND: |
| 1906 | if (temp & PORT_RESET) |
| 1907 | goto error; |
| 1908 | |
| 1909 | if (temp & PORT_SUSPEND) { |
| 1910 | if ((temp & PORT_PE) == 0) |
| 1911 | goto error; |
| 1912 | /* resume signaling for 20 msec */ |
| 1913 | temp &= ~(PORT_RWC_BITS); |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 1914 | reg_write32(hcd->regs, HC_PORTSC1, |
| 1915 | temp | PORT_RESUME); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1916 | priv->reset_done = jiffies + |
| 1917 | msecs_to_jiffies(20); |
| 1918 | } |
| 1919 | break; |
| 1920 | case USB_PORT_FEAT_C_SUSPEND: |
| 1921 | /* we auto-clear this feature */ |
| 1922 | break; |
| 1923 | case USB_PORT_FEAT_POWER: |
| 1924 | if (HCS_PPC(priv->hcs_params)) |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 1925 | reg_write32(hcd->regs, HC_PORTSC1, |
| 1926 | temp & ~PORT_POWER); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1927 | break; |
| 1928 | case USB_PORT_FEAT_C_CONNECTION: |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 1929 | reg_write32(hcd->regs, HC_PORTSC1, temp | PORT_CSC); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1930 | break; |
| 1931 | case USB_PORT_FEAT_C_OVER_CURRENT: |
| 1932 | /* XXX error ?*/ |
| 1933 | break; |
| 1934 | case USB_PORT_FEAT_C_RESET: |
| 1935 | /* GetPortStatus clears reset */ |
| 1936 | break; |
| 1937 | default: |
| 1938 | goto error; |
| 1939 | } |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 1940 | reg_read32(hcd->regs, HC_USBCMD); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1941 | break; |
| 1942 | case GetHubDescriptor: |
| 1943 | isp1760_hub_descriptor(priv, (struct usb_hub_descriptor *) |
| 1944 | buf); |
| 1945 | break; |
| 1946 | case GetHubStatus: |
| 1947 | /* no hub-wide feature/status flags */ |
| 1948 | memset(buf, 0, 4); |
| 1949 | break; |
| 1950 | case GetPortStatus: |
| 1951 | if (!wIndex || wIndex > ports) |
| 1952 | goto error; |
| 1953 | wIndex--; |
| 1954 | status = 0; |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 1955 | temp = reg_read32(hcd->regs, HC_PORTSC1); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1956 | |
| 1957 | /* wPortChange bits */ |
| 1958 | if (temp & PORT_CSC) |
Alan Stern | 749da5f | 2010-03-04 17:05:08 -0500 | [diff] [blame] | 1959 | status |= USB_PORT_STAT_C_CONNECTION << 16; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1960 | |
| 1961 | |
| 1962 | /* whoever resumes must GetPortStatus to complete it!! */ |
| 1963 | if (temp & PORT_RESUME) { |
Arvid Brodin | 6bda21b | 2011-02-26 22:06:37 +0100 | [diff] [blame] | 1964 | dev_err(hcd->self.controller, "Port resume should be skipped.\n"); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1965 | |
| 1966 | /* Remote Wakeup received? */ |
| 1967 | if (!priv->reset_done) { |
| 1968 | /* resume signaling for 20 msec */ |
| 1969 | priv->reset_done = jiffies |
| 1970 | + msecs_to_jiffies(20); |
| 1971 | /* check the port again */ |
Arvid Brodin | 6bda21b | 2011-02-26 22:06:37 +0100 | [diff] [blame] | 1972 | mod_timer(&hcd->rh_timer, priv->reset_done); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1973 | } |
| 1974 | |
| 1975 | /* resume completed? */ |
| 1976 | else if (time_after_eq(jiffies, |
| 1977 | priv->reset_done)) { |
Alan Stern | 749da5f | 2010-03-04 17:05:08 -0500 | [diff] [blame] | 1978 | status |= USB_PORT_STAT_C_SUSPEND << 16; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1979 | priv->reset_done = 0; |
| 1980 | |
| 1981 | /* stop resume signaling */ |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 1982 | temp = reg_read32(hcd->regs, HC_PORTSC1); |
| 1983 | reg_write32(hcd->regs, HC_PORTSC1, |
| 1984 | temp & ~(PORT_RWC_BITS | PORT_RESUME)); |
| 1985 | retval = handshake(hcd, HC_PORTSC1, |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1986 | PORT_RESUME, 0, 2000 /* 2msec */); |
| 1987 | if (retval != 0) { |
Arvid Brodin | 6bda21b | 2011-02-26 22:06:37 +0100 | [diff] [blame] | 1988 | dev_err(hcd->self.controller, |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1989 | "port %d resume error %d\n", |
| 1990 | wIndex + 1, retval); |
| 1991 | goto error; |
| 1992 | } |
| 1993 | temp &= ~(PORT_SUSPEND|PORT_RESUME|(3<<10)); |
| 1994 | } |
| 1995 | } |
| 1996 | |
| 1997 | /* whoever resets must GetPortStatus to complete it!! */ |
| 1998 | if ((temp & PORT_RESET) |
| 1999 | && time_after_eq(jiffies, |
| 2000 | priv->reset_done)) { |
Alan Stern | 749da5f | 2010-03-04 17:05:08 -0500 | [diff] [blame] | 2001 | status |= USB_PORT_STAT_C_RESET << 16; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 2002 | priv->reset_done = 0; |
| 2003 | |
| 2004 | /* force reset to complete */ |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 2005 | reg_write32(hcd->regs, HC_PORTSC1, temp & ~PORT_RESET); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 2006 | /* REVISIT: some hardware needs 550+ usec to clear |
| 2007 | * this bit; seems too long to spin routinely... |
| 2008 | */ |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 2009 | retval = handshake(hcd, HC_PORTSC1, |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 2010 | PORT_RESET, 0, 750); |
| 2011 | if (retval != 0) { |
Arvid Brodin | 6bda21b | 2011-02-26 22:06:37 +0100 | [diff] [blame] | 2012 | dev_err(hcd->self.controller, "port %d reset error %d\n", |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 2013 | wIndex + 1, retval); |
| 2014 | goto error; |
| 2015 | } |
| 2016 | |
| 2017 | /* see what we found out */ |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 2018 | temp = check_reset_complete(hcd, wIndex, |
| 2019 | reg_read32(hcd->regs, HC_PORTSC1)); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 2020 | } |
| 2021 | /* |
Petr Mladek | 37ebb54 | 2014-09-19 17:32:23 +0200 | [diff] [blame] | 2022 | * Even if OWNER is set, there's no harm letting hub_wq |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 2023 | * see the wPortStatus values (they should all be 0 except |
| 2024 | * for PORT_POWER anyway). |
| 2025 | */ |
| 2026 | |
| 2027 | if (temp & PORT_OWNER) |
Arvid Brodin | 6bda21b | 2011-02-26 22:06:37 +0100 | [diff] [blame] | 2028 | dev_err(hcd->self.controller, "PORT_OWNER is set\n"); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 2029 | |
| 2030 | if (temp & PORT_CONNECT) { |
Alan Stern | 749da5f | 2010-03-04 17:05:08 -0500 | [diff] [blame] | 2031 | status |= USB_PORT_STAT_CONNECTION; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 2032 | /* status may be from integrated TT */ |
Arvid Brodin | 6bda21b | 2011-02-26 22:06:37 +0100 | [diff] [blame] | 2033 | status |= USB_PORT_STAT_HIGH_SPEED; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 2034 | } |
| 2035 | if (temp & PORT_PE) |
Alan Stern | 749da5f | 2010-03-04 17:05:08 -0500 | [diff] [blame] | 2036 | status |= USB_PORT_STAT_ENABLE; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 2037 | if (temp & (PORT_SUSPEND|PORT_RESUME)) |
Alan Stern | 749da5f | 2010-03-04 17:05:08 -0500 | [diff] [blame] | 2038 | status |= USB_PORT_STAT_SUSPEND; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 2039 | if (temp & PORT_RESET) |
Alan Stern | 749da5f | 2010-03-04 17:05:08 -0500 | [diff] [blame] | 2040 | status |= USB_PORT_STAT_RESET; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 2041 | if (temp & PORT_POWER) |
Alan Stern | 749da5f | 2010-03-04 17:05:08 -0500 | [diff] [blame] | 2042 | status |= USB_PORT_STAT_POWER; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 2043 | |
| 2044 | put_unaligned(cpu_to_le32(status), (__le32 *) buf); |
| 2045 | break; |
| 2046 | case SetHubFeature: |
| 2047 | switch (wValue) { |
| 2048 | case C_HUB_LOCAL_POWER: |
| 2049 | case C_HUB_OVER_CURRENT: |
| 2050 | /* no hub-wide feature/status flags */ |
| 2051 | break; |
| 2052 | default: |
| 2053 | goto error; |
| 2054 | } |
| 2055 | break; |
| 2056 | case SetPortFeature: |
| 2057 | selector = wIndex >> 8; |
| 2058 | wIndex &= 0xff; |
| 2059 | if (!wIndex || wIndex > ports) |
| 2060 | goto error; |
| 2061 | wIndex--; |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 2062 | temp = reg_read32(hcd->regs, HC_PORTSC1); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 2063 | if (temp & PORT_OWNER) |
| 2064 | break; |
| 2065 | |
| 2066 | /* temp &= ~PORT_RWC_BITS; */ |
| 2067 | switch (wValue) { |
| 2068 | case USB_PORT_FEAT_ENABLE: |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 2069 | reg_write32(hcd->regs, HC_PORTSC1, temp | PORT_PE); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 2070 | break; |
| 2071 | |
| 2072 | case USB_PORT_FEAT_SUSPEND: |
| 2073 | if ((temp & PORT_PE) == 0 |
| 2074 | || (temp & PORT_RESET) != 0) |
| 2075 | goto error; |
| 2076 | |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 2077 | reg_write32(hcd->regs, HC_PORTSC1, temp | PORT_SUSPEND); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 2078 | break; |
| 2079 | case USB_PORT_FEAT_POWER: |
| 2080 | if (HCS_PPC(priv->hcs_params)) |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 2081 | reg_write32(hcd->regs, HC_PORTSC1, |
| 2082 | temp | PORT_POWER); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 2083 | break; |
| 2084 | case USB_PORT_FEAT_RESET: |
| 2085 | if (temp & PORT_RESUME) |
| 2086 | goto error; |
| 2087 | /* line status bits may report this as low speed, |
| 2088 | * which can be fine if this root hub has a |
| 2089 | * transaction translator built in. |
| 2090 | */ |
| 2091 | if ((temp & (PORT_PE|PORT_CONNECT)) == PORT_CONNECT |
| 2092 | && PORT_USB11(temp)) { |
| 2093 | temp |= PORT_OWNER; |
| 2094 | } else { |
| 2095 | temp |= PORT_RESET; |
| 2096 | temp &= ~PORT_PE; |
| 2097 | |
| 2098 | /* |
| 2099 | * caller must wait, then call GetPortStatus |
| 2100 | * usb 2.0 spec says 50 ms resets on root |
| 2101 | */ |
| 2102 | priv->reset_done = jiffies + |
| 2103 | msecs_to_jiffies(50); |
| 2104 | } |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 2105 | reg_write32(hcd->regs, HC_PORTSC1, temp); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 2106 | break; |
| 2107 | default: |
| 2108 | goto error; |
| 2109 | } |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 2110 | reg_read32(hcd->regs, HC_USBCMD); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 2111 | break; |
| 2112 | |
| 2113 | default: |
| 2114 | error: |
| 2115 | /* "stall" on error */ |
| 2116 | retval = -EPIPE; |
| 2117 | } |
| 2118 | spin_unlock_irqrestore(&priv->lock, flags); |
| 2119 | return retval; |
| 2120 | } |
| 2121 | |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 2122 | static int isp1760_get_frame(struct usb_hcd *hcd) |
| 2123 | { |
| 2124 | struct isp1760_hcd *priv = hcd_to_priv(hcd); |
| 2125 | u32 fr; |
| 2126 | |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 2127 | fr = reg_read32(hcd->regs, HC_FRINDEX); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 2128 | return (fr >> 3) % priv->periodic_size; |
| 2129 | } |
| 2130 | |
| 2131 | static void isp1760_stop(struct usb_hcd *hcd) |
| 2132 | { |
| 2133 | struct isp1760_hcd *priv = hcd_to_priv(hcd); |
Nate Case | 3faefc8 | 2008-06-17 11:11:38 -0500 | [diff] [blame] | 2134 | u32 temp; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 2135 | |
Arvid Brodin | 6d50c60 | 2011-08-21 08:29:26 +0200 | [diff] [blame] | 2136 | del_timer(&errata2_timer); |
| 2137 | |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 2138 | isp1760_hub_control(hcd, ClearPortFeature, USB_PORT_FEAT_POWER, 1, |
| 2139 | NULL, 0); |
| 2140 | mdelay(20); |
| 2141 | |
| 2142 | spin_lock_irq(&priv->lock); |
Arvid Brodin | 6bda21b | 2011-02-26 22:06:37 +0100 | [diff] [blame] | 2143 | ehci_reset(hcd); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 2144 | /* Disable IRQ */ |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 2145 | temp = reg_read32(hcd->regs, HC_HW_MODE_CTRL); |
| 2146 | reg_write32(hcd->regs, HC_HW_MODE_CTRL, temp &= ~HW_GLOBAL_INTR_EN); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 2147 | spin_unlock_irq(&priv->lock); |
| 2148 | |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 2149 | reg_write32(hcd->regs, HC_CONFIGFLAG, 0); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 2150 | } |
| 2151 | |
| 2152 | static void isp1760_shutdown(struct usb_hcd *hcd) |
| 2153 | { |
Nate Case | 3faefc8 | 2008-06-17 11:11:38 -0500 | [diff] [blame] | 2154 | u32 command, temp; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 2155 | |
| 2156 | isp1760_stop(hcd); |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 2157 | temp = reg_read32(hcd->regs, HC_HW_MODE_CTRL); |
| 2158 | reg_write32(hcd->regs, HC_HW_MODE_CTRL, temp &= ~HW_GLOBAL_INTR_EN); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 2159 | |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 2160 | command = reg_read32(hcd->regs, HC_USBCMD); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 2161 | command &= ~CMD_RUN; |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 2162 | reg_write32(hcd->regs, HC_USBCMD, command); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 2163 | } |
| 2164 | |
Arvid Brodin | 74ad602 | 2011-08-23 01:25:30 +0200 | [diff] [blame] | 2165 | static void isp1760_clear_tt_buffer_complete(struct usb_hcd *hcd, |
| 2166 | struct usb_host_endpoint *ep) |
| 2167 | { |
| 2168 | struct isp1760_hcd *priv = hcd_to_priv(hcd); |
| 2169 | struct isp1760_qh *qh = ep->hcpriv; |
| 2170 | unsigned long spinflags; |
| 2171 | |
| 2172 | if (!qh) |
| 2173 | return; |
| 2174 | |
| 2175 | spin_lock_irqsave(&priv->lock, spinflags); |
| 2176 | qh->tt_buffer_dirty = 0; |
| 2177 | schedule_ptds(hcd); |
| 2178 | spin_unlock_irqrestore(&priv->lock, spinflags); |
| 2179 | } |
| 2180 | |
| 2181 | |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 2182 | static const struct hc_driver isp1760_hc_driver = { |
| 2183 | .description = "isp1760-hcd", |
| 2184 | .product_desc = "NXP ISP1760 USB Host Controller", |
Laurent Pinchart | cdd36e8 | 2015-01-21 00:55:54 +0200 | [diff] [blame] | 2185 | .hcd_priv_size = sizeof(struct isp1760_hcd *), |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 2186 | .irq = isp1760_irq, |
| 2187 | .flags = HCD_MEMORY | HCD_USB2, |
| 2188 | .reset = isp1760_hc_setup, |
| 2189 | .start = isp1760_run, |
| 2190 | .stop = isp1760_stop, |
| 2191 | .shutdown = isp1760_shutdown, |
| 2192 | .urb_enqueue = isp1760_urb_enqueue, |
| 2193 | .urb_dequeue = isp1760_urb_dequeue, |
| 2194 | .endpoint_disable = isp1760_endpoint_disable, |
| 2195 | .get_frame_number = isp1760_get_frame, |
| 2196 | .hub_status_data = isp1760_hub_status_data, |
| 2197 | .hub_control = isp1760_hub_control, |
Arvid Brodin | 74ad602 | 2011-08-23 01:25:30 +0200 | [diff] [blame] | 2198 | .clear_tt_buffer_complete = isp1760_clear_tt_buffer_complete, |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 2199 | }; |
| 2200 | |
Laurent Pinchart | 5a6356a | 2015-01-21 00:55:49 +0200 | [diff] [blame] | 2201 | int __init isp1760_init_kmem_once(void) |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 2202 | { |
Michael Grzeschik | 94011ec | 2012-04-05 14:56:08 +0200 | [diff] [blame] | 2203 | urb_listitem_cachep = kmem_cache_create("isp1760_urb_listitem", |
Arvid Brodin | 71a9f9d | 2011-04-26 21:48:30 +0200 | [diff] [blame] | 2204 | sizeof(struct urb_listitem), 0, SLAB_TEMPORARY | |
| 2205 | SLAB_MEM_SPREAD, NULL); |
| 2206 | |
| 2207 | if (!urb_listitem_cachep) |
| 2208 | return -ENOMEM; |
| 2209 | |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 2210 | qtd_cachep = kmem_cache_create("isp1760_qtd", |
| 2211 | sizeof(struct isp1760_qtd), 0, SLAB_TEMPORARY | |
| 2212 | SLAB_MEM_SPREAD, NULL); |
| 2213 | |
| 2214 | if (!qtd_cachep) |
| 2215 | return -ENOMEM; |
| 2216 | |
| 2217 | qh_cachep = kmem_cache_create("isp1760_qh", sizeof(struct isp1760_qh), |
| 2218 | 0, SLAB_TEMPORARY | SLAB_MEM_SPREAD, NULL); |
| 2219 | |
| 2220 | if (!qh_cachep) { |
| 2221 | kmem_cache_destroy(qtd_cachep); |
| 2222 | return -ENOMEM; |
| 2223 | } |
| 2224 | |
| 2225 | return 0; |
| 2226 | } |
| 2227 | |
Laurent Pinchart | 5a6356a | 2015-01-21 00:55:49 +0200 | [diff] [blame] | 2228 | void isp1760_deinit_kmem_cache(void) |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 2229 | { |
| 2230 | kmem_cache_destroy(qtd_cachep); |
| 2231 | kmem_cache_destroy(qh_cachep); |
Arvid Brodin | 71a9f9d | 2011-04-26 21:48:30 +0200 | [diff] [blame] | 2232 | kmem_cache_destroy(urb_listitem_cachep); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 2233 | } |
| 2234 | |
Laurent Pinchart | 4942e00 | 2015-01-21 00:55:51 +0200 | [diff] [blame] | 2235 | int isp1760_register(struct resource *mem, int irq, unsigned long irqflags, |
| 2236 | struct device *dev, unsigned int devflags) |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 2237 | { |
Laurent Pinchart | cdd36e8 | 2015-01-21 00:55:54 +0200 | [diff] [blame] | 2238 | struct usb_hcd *hcd = NULL; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 2239 | struct isp1760_hcd *priv; |
| 2240 | int ret; |
| 2241 | |
| 2242 | if (usb_disabled()) |
Laurent Pinchart | f0bdbb0 | 2015-01-21 00:55:47 +0200 | [diff] [blame] | 2243 | return -ENODEV; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 2244 | |
Laurent Pinchart | cdd36e8 | 2015-01-21 00:55:54 +0200 | [diff] [blame] | 2245 | priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); |
| 2246 | if (!priv) |
| 2247 | return -ENOMEM; |
| 2248 | |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 2249 | /* prevent usb-core allocating DMA pages */ |
| 2250 | dev->dma_mask = NULL; |
| 2251 | |
Kay Sievers | 0031a06 | 2008-05-02 06:02:41 +0200 | [diff] [blame] | 2252 | hcd = usb_create_hcd(&isp1760_hc_driver, dev, dev_name(dev)); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 2253 | if (!hcd) |
Laurent Pinchart | f0bdbb0 | 2015-01-21 00:55:47 +0200 | [diff] [blame] | 2254 | return -ENOMEM; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 2255 | |
Laurent Pinchart | cdd36e8 | 2015-01-21 00:55:54 +0200 | [diff] [blame] | 2256 | priv->hcd = hcd; |
| 2257 | *(struct isp1760_hcd **)hcd->hcd_priv = priv; |
| 2258 | |
Nate Case | 3faefc8 | 2008-06-17 11:11:38 -0500 | [diff] [blame] | 2259 | priv->devflags = devflags; |
Laurent Pinchart | 7eb42c6 | 2015-01-21 00:55:40 +0200 | [diff] [blame] | 2260 | |
| 2261 | priv->rst_gpio = devm_gpiod_get_optional(dev, NULL, GPIOD_OUT_HIGH); |
| 2262 | if (IS_ERR(priv->rst_gpio)) { |
| 2263 | ret = PTR_ERR(priv->rst_gpio); |
Laurent Pinchart | 10feee1 | 2015-01-21 00:55:52 +0200 | [diff] [blame] | 2264 | goto error; |
Laurent Pinchart | 7eb42c6 | 2015-01-21 00:55:40 +0200 | [diff] [blame] | 2265 | } |
| 2266 | |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 2267 | init_memory(priv); |
Laurent Pinchart | 10feee1 | 2015-01-21 00:55:52 +0200 | [diff] [blame] | 2268 | hcd->regs = devm_ioremap_resource(dev, mem); |
| 2269 | if (IS_ERR(hcd->regs)) { |
| 2270 | ret = PTR_ERR(hcd->regs); |
| 2271 | goto error; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 2272 | } |
| 2273 | |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 2274 | hcd->irq = irq; |
Laurent Pinchart | 4942e00 | 2015-01-21 00:55:51 +0200 | [diff] [blame] | 2275 | hcd->rsrc_start = mem->start; |
| 2276 | hcd->rsrc_len = resource_size(mem); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 2277 | |
Nate Case | e6942d6 | 2008-05-21 16:28:20 -0500 | [diff] [blame] | 2278 | ret = usb_add_hcd(hcd, irq, irqflags); |
| 2279 | if (ret) |
Laurent Pinchart | 10feee1 | 2015-01-21 00:55:52 +0200 | [diff] [blame] | 2280 | goto error; |
Peter Chen | 3c9740a | 2013-11-05 10:46:02 +0800 | [diff] [blame] | 2281 | device_wakeup_enable(hcd->self.controller); |
Nate Case | e6942d6 | 2008-05-21 16:28:20 -0500 | [diff] [blame] | 2282 | |
Laurent Pinchart | cdd36e8 | 2015-01-21 00:55:54 +0200 | [diff] [blame] | 2283 | dev_set_drvdata(dev, priv); |
Laurent Pinchart | 57f068b | 2015-01-21 00:55:46 +0200 | [diff] [blame] | 2284 | |
Laurent Pinchart | f0bdbb0 | 2015-01-21 00:55:47 +0200 | [diff] [blame] | 2285 | return 0; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 2286 | |
Laurent Pinchart | 10feee1 | 2015-01-21 00:55:52 +0200 | [diff] [blame] | 2287 | error: |
Laurent Pinchart | 3057375 | 2015-01-21 00:55:48 +0200 | [diff] [blame] | 2288 | usb_put_hcd(hcd); |
Laurent Pinchart | 3057375 | 2015-01-21 00:55:48 +0200 | [diff] [blame] | 2289 | return ret; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 2290 | } |
| 2291 | |
Laurent Pinchart | 10c73f0 | 2015-01-21 00:55:45 +0200 | [diff] [blame] | 2292 | void isp1760_unregister(struct device *dev) |
| 2293 | { |
Laurent Pinchart | cdd36e8 | 2015-01-21 00:55:54 +0200 | [diff] [blame] | 2294 | struct isp1760_hcd *priv = dev_get_drvdata(dev); |
| 2295 | struct usb_hcd *hcd = priv->hcd; |
Laurent Pinchart | 10c73f0 | 2015-01-21 00:55:45 +0200 | [diff] [blame] | 2296 | |
| 2297 | usb_remove_hcd(hcd); |
Laurent Pinchart | 10c73f0 | 2015-01-21 00:55:45 +0200 | [diff] [blame] | 2298 | usb_put_hcd(hcd); |
| 2299 | } |
| 2300 | |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 2301 | MODULE_DESCRIPTION("Driver for the ISP1760 USB-controller from NXP"); |
| 2302 | MODULE_AUTHOR("Sebastian Siewior <bigeasy@linuxtronix.de>"); |
| 2303 | MODULE_LICENSE("GPL v2"); |