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 | * |
| 11 | */ |
| 12 | #include <linux/module.h> |
| 13 | #include <linux/kernel.h> |
| 14 | #include <linux/slab.h> |
| 15 | #include <linux/list.h> |
| 16 | #include <linux/usb.h> |
Eric Lescouet | 27729aa | 2010-04-24 23:21:52 +0200 | [diff] [blame] | 17 | #include <linux/usb/hcd.h> |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 18 | #include <linux/debugfs.h> |
| 19 | #include <linux/uaccess.h> |
| 20 | #include <linux/io.h> |
Catalin Marinas | db8516f | 2010-02-02 15:31:02 +0000 | [diff] [blame] | 21 | #include <linux/mm.h> |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 22 | #include <asm/unaligned.h> |
Catalin Marinas | db8516f | 2010-02-02 15:31:02 +0000 | [diff] [blame] | 23 | #include <asm/cacheflush.h> |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 24 | |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 25 | #include "isp1760-hcd.h" |
| 26 | |
| 27 | static struct kmem_cache *qtd_cachep; |
| 28 | static struct kmem_cache *qh_cachep; |
| 29 | |
| 30 | struct isp1760_hcd { |
| 31 | u32 hcs_params; |
| 32 | spinlock_t lock; |
| 33 | struct inter_packet_info atl_ints[32]; |
| 34 | struct inter_packet_info int_ints[32]; |
| 35 | struct memory_chunk memory_pool[BLOCKS]; |
Sebastian Andrzej Siewior | b14e840 | 2011-02-08 21:07:40 +0100 | [diff] [blame] | 36 | u32 atl_queued; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 37 | |
| 38 | /* periodic schedule support */ |
| 39 | #define DEFAULT_I_TDPS 1024 |
| 40 | unsigned periodic_size; |
| 41 | unsigned i_thresh; |
| 42 | unsigned long reset_done; |
| 43 | unsigned long next_statechange; |
Nate Case | 3faefc8 | 2008-06-17 11:11:38 -0500 | [diff] [blame] | 44 | unsigned int devflags; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 45 | }; |
| 46 | |
| 47 | static inline struct isp1760_hcd *hcd_to_priv(struct usb_hcd *hcd) |
| 48 | { |
| 49 | return (struct isp1760_hcd *) (hcd->hcd_priv); |
| 50 | } |
| 51 | static inline struct usb_hcd *priv_to_hcd(struct isp1760_hcd *priv) |
| 52 | { |
| 53 | return container_of((void *) priv, struct usb_hcd, hcd_priv); |
| 54 | } |
| 55 | |
| 56 | /* Section 2.2 Host Controller Capability Registers */ |
| 57 | #define HC_LENGTH(p) (((p)>>00)&0x00ff) /* bits 7:0 */ |
| 58 | #define HC_VERSION(p) (((p)>>16)&0xffff) /* bits 31:16 */ |
| 59 | #define HCS_INDICATOR(p) ((p)&(1 << 16)) /* true: has port indicators */ |
| 60 | #define HCS_PPC(p) ((p)&(1 << 4)) /* true: port power control */ |
| 61 | #define HCS_N_PORTS(p) (((p)>>0)&0xf) /* bits 3:0, ports on HC */ |
| 62 | #define HCC_ISOC_CACHE(p) ((p)&(1 << 7)) /* true: can cache isoc frame */ |
| 63 | #define HCC_ISOC_THRES(p) (((p)>>4)&0x7) /* bits 6:4, uframes cached */ |
| 64 | |
| 65 | /* Section 2.3 Host Controller Operational Registers */ |
| 66 | #define CMD_LRESET (1<<7) /* partial reset (no ports, etc) */ |
| 67 | #define CMD_RESET (1<<1) /* reset HC not bus */ |
| 68 | #define CMD_RUN (1<<0) /* start/stop HC */ |
| 69 | #define STS_PCD (1<<2) /* port change detect */ |
| 70 | #define FLAG_CF (1<<0) /* true: we'll support "high speed" */ |
| 71 | |
| 72 | #define PORT_OWNER (1<<13) /* true: companion hc owns this port */ |
| 73 | #define PORT_POWER (1<<12) /* true: has power (see PPC) */ |
| 74 | #define PORT_USB11(x) (((x) & (3 << 10)) == (1 << 10)) /* USB 1.1 device */ |
| 75 | #define PORT_RESET (1<<8) /* reset port */ |
| 76 | #define PORT_SUSPEND (1<<7) /* suspend port */ |
| 77 | #define PORT_RESUME (1<<6) /* resume it */ |
| 78 | #define PORT_PE (1<<2) /* port enable */ |
| 79 | #define PORT_CSC (1<<1) /* connect status change */ |
| 80 | #define PORT_CONNECT (1<<0) /* device connected */ |
| 81 | #define PORT_RWC_BITS (PORT_CSC) |
| 82 | |
| 83 | struct isp1760_qtd { |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 84 | u8 packet_type; |
| 85 | u8 toggle; |
| 86 | |
| 87 | void *data_buffer; |
Arvid Brodin | a041d8e | 2011-02-26 22:04:40 +0100 | [diff] [blame^] | 88 | u32 payload_addr; |
| 89 | |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 90 | /* the rest is HCD-private */ |
| 91 | struct list_head qtd_list; |
| 92 | struct urb *urb; |
| 93 | size_t length; |
| 94 | |
| 95 | /* isp special*/ |
| 96 | u32 status; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 97 | #define URB_ENQUEUED (1 << 1) |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 98 | }; |
| 99 | |
| 100 | struct isp1760_qh { |
| 101 | /* first part defined by EHCI spec */ |
| 102 | struct list_head qtd_list; |
| 103 | struct isp1760_hcd *priv; |
| 104 | |
| 105 | /* periodic schedule info */ |
| 106 | unsigned short period; /* polling interval */ |
| 107 | struct usb_device *dev; |
| 108 | |
| 109 | u32 toggle; |
| 110 | u32 ping; |
| 111 | }; |
| 112 | |
Alan Stern | 288ead4 | 2010-03-04 11:32:30 -0500 | [diff] [blame] | 113 | #define ehci_port_speed(priv, portsc) USB_PORT_STAT_HIGH_SPEED |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 114 | |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 115 | /* |
| 116 | * Access functions for isp176x registers (addresses 0..0x03FF). |
| 117 | */ |
| 118 | static u32 reg_read32(void __iomem *base, u32 reg) |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 119 | { |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 120 | return readl(base + reg); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 121 | } |
| 122 | |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 123 | static void reg_write32(void __iomem *base, u32 reg, u32 val) |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 124 | { |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 125 | writel(val, base + reg); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 126 | } |
| 127 | |
| 128 | /* |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 129 | * Access functions for isp176x memory (offset >= 0x0400). |
| 130 | * |
| 131 | * bank_reads8() reads memory locations prefetched by an earlier write to |
| 132 | * HC_MEMORY_REG (see isp176x datasheet). Unless you want to do fancy multi- |
| 133 | * bank optimizations, you should use the more generic mem_reads8() below. |
| 134 | * |
| 135 | * For access to ptd memory, use the specialized ptd_read() and ptd_write() |
| 136 | * below. |
| 137 | * |
| 138 | * 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] | 139 | * doesn't quite work because some people have to enforce 32-bit access |
| 140 | */ |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 141 | static void bank_reads8(void __iomem *src_base, u32 src_offset, u32 bank_addr, |
| 142 | __u32 *dst, u32 bytes) |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 143 | { |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 144 | __u32 __iomem *src; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 145 | u32 val; |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 146 | __u8 *src_byteptr; |
| 147 | __u8 *dst_byteptr; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 148 | |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 149 | src = src_base + (bank_addr | src_offset); |
| 150 | |
| 151 | if (src_offset < PAYLOAD_OFFSET) { |
| 152 | while (bytes >= 4) { |
| 153 | *dst = le32_to_cpu(__raw_readl(src)); |
| 154 | bytes -= 4; |
| 155 | src++; |
| 156 | dst++; |
| 157 | } |
| 158 | } else { |
| 159 | while (bytes >= 4) { |
| 160 | *dst = __raw_readl(src); |
| 161 | bytes -= 4; |
| 162 | src++; |
| 163 | dst++; |
| 164 | } |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 165 | } |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 166 | |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 167 | if (!bytes) |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 168 | return; |
| 169 | |
| 170 | /* in case we have 3, 2 or 1 by left. The dst buffer may not be fully |
| 171 | * allocated. |
| 172 | */ |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 173 | if (src_offset < PAYLOAD_OFFSET) |
| 174 | val = le32_to_cpu(__raw_readl(src)); |
| 175 | else |
| 176 | val = __raw_readl(src); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 177 | |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 178 | dst_byteptr = (void *) dst; |
| 179 | src_byteptr = (void *) &val; |
| 180 | while (bytes > 0) { |
| 181 | *dst_byteptr = *src_byteptr; |
| 182 | dst_byteptr++; |
| 183 | src_byteptr++; |
| 184 | bytes--; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 185 | } |
| 186 | } |
| 187 | |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 188 | static void mem_reads8(void __iomem *src_base, u32 src_offset, void *dst, |
| 189 | u32 bytes) |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 190 | { |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 191 | reg_write32(src_base, HC_MEMORY_REG, src_offset + ISP_BANK(0)); |
| 192 | ndelay(90); |
| 193 | bank_reads8(src_base, src_offset, ISP_BANK(0), dst, bytes); |
| 194 | } |
| 195 | |
| 196 | static void mem_writes8(void __iomem *dst_base, u32 dst_offset, |
| 197 | __u32 const *src, u32 bytes) |
| 198 | { |
| 199 | __u32 __iomem *dst; |
| 200 | |
| 201 | dst = dst_base + dst_offset; |
| 202 | |
| 203 | if (dst_offset < PAYLOAD_OFFSET) { |
| 204 | while (bytes >= 4) { |
| 205 | __raw_writel(cpu_to_le32(*src), dst); |
| 206 | bytes -= 4; |
| 207 | src++; |
| 208 | dst++; |
| 209 | } |
| 210 | } else { |
| 211 | while (bytes >= 4) { |
| 212 | __raw_writel(*src, dst); |
| 213 | bytes -= 4; |
| 214 | src++; |
| 215 | dst++; |
| 216 | } |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 217 | } |
| 218 | |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 219 | if (!bytes) |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 220 | return; |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 221 | /* in case we have 3, 2 or 1 bytes left. The buffer is allocated and the |
| 222 | * extra bytes should not be read by the HW. |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 223 | */ |
| 224 | |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 225 | if (dst_offset < PAYLOAD_OFFSET) |
| 226 | __raw_writel(cpu_to_le32(*src), dst); |
| 227 | else |
| 228 | __raw_writel(*src, dst); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 229 | } |
| 230 | |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 231 | /* |
| 232 | * Read and write ptds. 'ptd_offset' should be one of ISO_PTD_OFFSET, |
| 233 | * INT_PTD_OFFSET, and ATL_PTD_OFFSET. 'slot' should be less than 32. |
| 234 | */ |
| 235 | static void ptd_read(void __iomem *base, u32 ptd_offset, u32 slot, |
| 236 | struct ptd *ptd) |
| 237 | { |
| 238 | reg_write32(base, HC_MEMORY_REG, |
| 239 | ISP_BANK(0) + ptd_offset + slot*sizeof(*ptd)); |
| 240 | ndelay(90); |
| 241 | bank_reads8(base, ptd_offset + slot*sizeof(*ptd), ISP_BANK(0), |
| 242 | (void *) ptd, sizeof(*ptd)); |
| 243 | } |
| 244 | |
| 245 | static void ptd_write(void __iomem *base, u32 ptd_offset, u32 slot, |
| 246 | struct ptd *ptd) |
| 247 | { |
| 248 | mem_writes8(base, ptd_offset + slot*sizeof(*ptd) + sizeof(ptd->dw0), |
| 249 | &ptd->dw1, 7*sizeof(ptd->dw1)); |
| 250 | /* Make sure dw0 gets written last (after other dw's and after payload) |
| 251 | since it contains the enable bit */ |
| 252 | wmb(); |
| 253 | mem_writes8(base, ptd_offset + slot*sizeof(*ptd), &ptd->dw0, |
| 254 | sizeof(ptd->dw0)); |
| 255 | } |
| 256 | |
| 257 | |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 258 | /* memory management of the 60kb on the chip from 0x1000 to 0xffff */ |
| 259 | static void init_memory(struct isp1760_hcd *priv) |
| 260 | { |
Arvid Brodin | a041d8e | 2011-02-26 22:04:40 +0100 | [diff] [blame^] | 261 | int i, curr; |
| 262 | u32 payload_addr; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 263 | |
Arvid Brodin | a041d8e | 2011-02-26 22:04:40 +0100 | [diff] [blame^] | 264 | payload_addr = PAYLOAD_OFFSET; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 265 | for (i = 0; i < BLOCK_1_NUM; i++) { |
Arvid Brodin | a041d8e | 2011-02-26 22:04:40 +0100 | [diff] [blame^] | 266 | priv->memory_pool[i].start = payload_addr; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 267 | priv->memory_pool[i].size = BLOCK_1_SIZE; |
| 268 | priv->memory_pool[i].free = 1; |
Arvid Brodin | a041d8e | 2011-02-26 22:04:40 +0100 | [diff] [blame^] | 269 | payload_addr += priv->memory_pool[i].size; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 270 | } |
| 271 | |
Arvid Brodin | a041d8e | 2011-02-26 22:04:40 +0100 | [diff] [blame^] | 272 | curr = i; |
| 273 | for (i = 0; i < BLOCK_2_NUM; i++) { |
| 274 | priv->memory_pool[curr + i].start = payload_addr; |
| 275 | priv->memory_pool[curr + i].size = BLOCK_2_SIZE; |
| 276 | priv->memory_pool[curr + i].free = 1; |
| 277 | payload_addr += priv->memory_pool[curr + i].size; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 278 | } |
| 279 | |
Arvid Brodin | a041d8e | 2011-02-26 22:04:40 +0100 | [diff] [blame^] | 280 | curr = i; |
| 281 | for (i = 0; i < BLOCK_3_NUM; i++) { |
| 282 | priv->memory_pool[curr + i].start = payload_addr; |
| 283 | priv->memory_pool[curr + i].size = BLOCK_3_SIZE; |
| 284 | priv->memory_pool[curr + i].free = 1; |
| 285 | payload_addr += priv->memory_pool[curr + i].size; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 286 | } |
| 287 | |
Arvid Brodin | a041d8e | 2011-02-26 22:04:40 +0100 | [diff] [blame^] | 288 | BUG_ON(payload_addr - priv->memory_pool[0].start > PAYLOAD_AREA_SIZE); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 289 | } |
| 290 | |
Arvid Brodin | a041d8e | 2011-02-26 22:04:40 +0100 | [diff] [blame^] | 291 | static void alloc_mem(struct isp1760_hcd *priv, struct isp1760_qtd *qtd) |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 292 | { |
| 293 | int i; |
| 294 | |
Arvid Brodin | a041d8e | 2011-02-26 22:04:40 +0100 | [diff] [blame^] | 295 | BUG_ON(qtd->payload_addr); |
| 296 | |
| 297 | if (!qtd->length) |
| 298 | return; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 299 | |
| 300 | for (i = 0; i < BLOCKS; i++) { |
Arvid Brodin | a041d8e | 2011-02-26 22:04:40 +0100 | [diff] [blame^] | 301 | if (priv->memory_pool[i].size >= qtd->length && |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 302 | priv->memory_pool[i].free) { |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 303 | priv->memory_pool[i].free = 0; |
Arvid Brodin | a041d8e | 2011-02-26 22:04:40 +0100 | [diff] [blame^] | 304 | qtd->payload_addr = priv->memory_pool[i].start; |
| 305 | return; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 306 | } |
| 307 | } |
| 308 | |
Arvid Brodin | a041d8e | 2011-02-26 22:04:40 +0100 | [diff] [blame^] | 309 | printk(KERN_ERR "ISP1760 MEM: can not allocate %lu bytes of memory\n", |
| 310 | qtd->length); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 311 | printk(KERN_ERR "Current memory map:\n"); |
| 312 | for (i = 0; i < BLOCKS; i++) { |
| 313 | printk(KERN_ERR "Pool %2d size %4d status: %d\n", |
| 314 | i, priv->memory_pool[i].size, |
| 315 | priv->memory_pool[i].free); |
| 316 | } |
| 317 | /* XXX maybe -ENOMEM could be possible */ |
| 318 | BUG(); |
Arvid Brodin | a041d8e | 2011-02-26 22:04:40 +0100 | [diff] [blame^] | 319 | return; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 320 | } |
| 321 | |
Arvid Brodin | a041d8e | 2011-02-26 22:04:40 +0100 | [diff] [blame^] | 322 | static void free_mem(struct isp1760_hcd *priv, struct isp1760_qtd *qtd) |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 323 | { |
| 324 | int i; |
| 325 | |
Arvid Brodin | a041d8e | 2011-02-26 22:04:40 +0100 | [diff] [blame^] | 326 | if (!qtd->payload_addr) |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 327 | return; |
| 328 | |
| 329 | for (i = 0; i < BLOCKS; i++) { |
Arvid Brodin | a041d8e | 2011-02-26 22:04:40 +0100 | [diff] [blame^] | 330 | if (priv->memory_pool[i].start == qtd->payload_addr) { |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 331 | BUG_ON(priv->memory_pool[i].free); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 332 | priv->memory_pool[i].free = 1; |
Arvid Brodin | a041d8e | 2011-02-26 22:04:40 +0100 | [diff] [blame^] | 333 | qtd->payload_addr = 0; |
| 334 | return; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 335 | } |
| 336 | } |
| 337 | |
Arvid Brodin | a041d8e | 2011-02-26 22:04:40 +0100 | [diff] [blame^] | 338 | printk(KERN_ERR "%s: Invalid pointer: %08x\n", __func__, |
| 339 | qtd->payload_addr); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 340 | BUG(); |
| 341 | } |
| 342 | |
| 343 | static void isp1760_init_regs(struct usb_hcd *hcd) |
| 344 | { |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 345 | reg_write32(hcd->regs, HC_BUFFER_STATUS_REG, 0); |
| 346 | reg_write32(hcd->regs, HC_ATL_PTD_SKIPMAP_REG, NO_TRANSFER_ACTIVE); |
| 347 | reg_write32(hcd->regs, HC_INT_PTD_SKIPMAP_REG, NO_TRANSFER_ACTIVE); |
| 348 | reg_write32(hcd->regs, HC_ISO_PTD_SKIPMAP_REG, NO_TRANSFER_ACTIVE); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 349 | |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 350 | reg_write32(hcd->regs, HC_ATL_PTD_DONEMAP_REG, ~NO_TRANSFER_ACTIVE); |
| 351 | reg_write32(hcd->regs, HC_INT_PTD_DONEMAP_REG, ~NO_TRANSFER_ACTIVE); |
| 352 | reg_write32(hcd->regs, HC_ISO_PTD_DONEMAP_REG, ~NO_TRANSFER_ACTIVE); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 353 | } |
| 354 | |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 355 | static int handshake(struct usb_hcd *hcd, u32 reg, |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 356 | u32 mask, u32 done, int usec) |
| 357 | { |
| 358 | u32 result; |
| 359 | |
| 360 | do { |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 361 | result = reg_read32(hcd->regs, reg); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 362 | if (result == ~0) |
| 363 | return -ENODEV; |
| 364 | result &= mask; |
| 365 | if (result == done) |
| 366 | return 0; |
| 367 | udelay(1); |
| 368 | usec--; |
| 369 | } while (usec > 0); |
| 370 | return -ETIMEDOUT; |
| 371 | } |
| 372 | |
| 373 | /* reset a non-running (STS_HALT == 1) controller */ |
| 374 | static int ehci_reset(struct isp1760_hcd *priv) |
| 375 | { |
| 376 | int retval; |
| 377 | struct usb_hcd *hcd = priv_to_hcd(priv); |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 378 | u32 command = reg_read32(hcd->regs, HC_USBCMD); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 379 | |
| 380 | command |= CMD_RESET; |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 381 | reg_write32(hcd->regs, HC_USBCMD, command); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 382 | hcd->state = HC_STATE_HALT; |
| 383 | priv->next_statechange = jiffies; |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 384 | retval = handshake(hcd, HC_USBCMD, |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 385 | CMD_RESET, 0, 250 * 1000); |
| 386 | return retval; |
| 387 | } |
| 388 | |
| 389 | static void qh_destroy(struct isp1760_qh *qh) |
| 390 | { |
| 391 | BUG_ON(!list_empty(&qh->qtd_list)); |
| 392 | kmem_cache_free(qh_cachep, qh); |
| 393 | } |
| 394 | |
| 395 | static struct isp1760_qh *isp1760_qh_alloc(struct isp1760_hcd *priv, |
| 396 | gfp_t flags) |
| 397 | { |
| 398 | struct isp1760_qh *qh; |
| 399 | |
| 400 | qh = kmem_cache_zalloc(qh_cachep, flags); |
| 401 | if (!qh) |
| 402 | return qh; |
| 403 | |
| 404 | INIT_LIST_HEAD(&qh->qtd_list); |
| 405 | qh->priv = priv; |
| 406 | return qh; |
| 407 | } |
| 408 | |
| 409 | /* magic numbers that can affect system performance */ |
| 410 | #define EHCI_TUNE_CERR 3 /* 0-3 qtd retries; 0 == don't stop */ |
| 411 | #define EHCI_TUNE_RL_HS 4 /* nak throttle; see 4.9 */ |
| 412 | #define EHCI_TUNE_RL_TT 0 |
| 413 | #define EHCI_TUNE_MULT_HS 1 /* 1-3 transactions/uframe; 4.10.3 */ |
| 414 | #define EHCI_TUNE_MULT_TT 1 |
| 415 | #define EHCI_TUNE_FLS 2 /* (small) 256 frame schedule */ |
| 416 | |
| 417 | /* one-time init, only for memory state */ |
| 418 | static int priv_init(struct usb_hcd *hcd) |
| 419 | { |
| 420 | struct isp1760_hcd *priv = hcd_to_priv(hcd); |
| 421 | u32 hcc_params; |
| 422 | |
| 423 | spin_lock_init(&priv->lock); |
| 424 | |
| 425 | /* |
| 426 | * hw default: 1K periodic list heads, one per frame. |
| 427 | * periodic_size can shrink by USBCMD update if hcc_params allows. |
| 428 | */ |
| 429 | priv->periodic_size = DEFAULT_I_TDPS; |
| 430 | |
| 431 | /* controllers may cache some of the periodic schedule ... */ |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 432 | hcc_params = reg_read32(hcd->regs, HC_HCCPARAMS); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 433 | /* full frame cache */ |
| 434 | if (HCC_ISOC_CACHE(hcc_params)) |
| 435 | priv->i_thresh = 8; |
| 436 | else /* N microframes cached */ |
| 437 | priv->i_thresh = 2 + HCC_ISOC_THRES(hcc_params); |
| 438 | |
| 439 | return 0; |
| 440 | } |
| 441 | |
| 442 | static int isp1760_hc_setup(struct usb_hcd *hcd) |
| 443 | { |
| 444 | struct isp1760_hcd *priv = hcd_to_priv(hcd); |
| 445 | int result; |
Nate Case | 3faefc8 | 2008-06-17 11:11:38 -0500 | [diff] [blame] | 446 | u32 scratch, hwmode; |
| 447 | |
| 448 | /* Setup HW Mode Control: This assumes a level active-low interrupt */ |
| 449 | hwmode = HW_DATA_BUS_32BIT; |
| 450 | |
| 451 | if (priv->devflags & ISP1760_FLAG_BUS_WIDTH_16) |
| 452 | hwmode &= ~HW_DATA_BUS_32BIT; |
| 453 | if (priv->devflags & ISP1760_FLAG_ANALOG_OC) |
| 454 | hwmode |= HW_ANA_DIGI_OC; |
| 455 | if (priv->devflags & ISP1760_FLAG_DACK_POL_HIGH) |
| 456 | hwmode |= HW_DACK_POL_HIGH; |
| 457 | if (priv->devflags & ISP1760_FLAG_DREQ_POL_HIGH) |
| 458 | hwmode |= HW_DREQ_POL_HIGH; |
Michael Hennerich | 9da69c6 | 2009-07-15 23:22:54 -0400 | [diff] [blame] | 459 | if (priv->devflags & ISP1760_FLAG_INTR_POL_HIGH) |
| 460 | hwmode |= HW_INTR_HIGH_ACT; |
| 461 | if (priv->devflags & ISP1760_FLAG_INTR_EDGE_TRIG) |
| 462 | hwmode |= HW_INTR_EDGE_TRIG; |
Nate Case | 3faefc8 | 2008-06-17 11:11:38 -0500 | [diff] [blame] | 463 | |
| 464 | /* |
| 465 | * We have to set this first in case we're in 16-bit mode. |
| 466 | * Write it twice to ensure correct upper bits if switching |
| 467 | * to 16-bit mode. |
| 468 | */ |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 469 | reg_write32(hcd->regs, HC_HW_MODE_CTRL, hwmode); |
| 470 | reg_write32(hcd->regs, HC_HW_MODE_CTRL, hwmode); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 471 | |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 472 | reg_write32(hcd->regs, HC_SCRATCH_REG, 0xdeadbabe); |
Nate Case | 3faefc8 | 2008-06-17 11:11:38 -0500 | [diff] [blame] | 473 | /* Change bus pattern */ |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 474 | scratch = reg_read32(hcd->regs, HC_CHIP_ID_REG); |
| 475 | scratch = reg_read32(hcd->regs, HC_SCRATCH_REG); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 476 | if (scratch != 0xdeadbabe) { |
| 477 | printk(KERN_ERR "ISP1760: Scratch test failed.\n"); |
| 478 | return -ENODEV; |
| 479 | } |
| 480 | |
| 481 | /* pre reset */ |
| 482 | isp1760_init_regs(hcd); |
| 483 | |
| 484 | /* reset */ |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 485 | reg_write32(hcd->regs, HC_RESET_REG, SW_RESET_RESET_ALL); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 486 | mdelay(100); |
| 487 | |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 488 | reg_write32(hcd->regs, HC_RESET_REG, SW_RESET_RESET_HC); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 489 | mdelay(100); |
| 490 | |
| 491 | result = ehci_reset(priv); |
| 492 | if (result) |
| 493 | return result; |
| 494 | |
| 495 | /* Step 11 passed */ |
| 496 | |
Nate Case | 3faefc8 | 2008-06-17 11:11:38 -0500 | [diff] [blame] | 497 | isp1760_info(priv, "bus width: %d, oc: %s\n", |
| 498 | (priv->devflags & ISP1760_FLAG_BUS_WIDTH_16) ? |
| 499 | 16 : 32, (priv->devflags & ISP1760_FLAG_ANALOG_OC) ? |
| 500 | "analog" : "digital"); |
| 501 | |
| 502 | /* ATL reset */ |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 503 | reg_write32(hcd->regs, HC_HW_MODE_CTRL, hwmode | ALL_ATX_RESET); |
Nate Case | 3faefc8 | 2008-06-17 11:11:38 -0500 | [diff] [blame] | 504 | mdelay(10); |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 505 | reg_write32(hcd->regs, HC_HW_MODE_CTRL, hwmode); |
Nate Case | 3faefc8 | 2008-06-17 11:11:38 -0500 | [diff] [blame] | 506 | |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 507 | reg_write32(hcd->regs, HC_INTERRUPT_REG, INTERRUPT_ENABLE_MASK); |
| 508 | reg_write32(hcd->regs, HC_INTERRUPT_ENABLE, INTERRUPT_ENABLE_MASK); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 509 | |
Nate Case | 3faefc8 | 2008-06-17 11:11:38 -0500 | [diff] [blame] | 510 | /* |
| 511 | * PORT 1 Control register of the ISP1760 is the OTG control |
Thomas Hommel | 42c6539 | 2008-12-18 10:31:40 +0100 | [diff] [blame] | 512 | * register on ISP1761. Since there is no OTG or device controller |
| 513 | * support in this driver, we use port 1 as a "normal" USB host port on |
| 514 | * both chips. |
Nate Case | 3faefc8 | 2008-06-17 11:11:38 -0500 | [diff] [blame] | 515 | */ |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 516 | reg_write32(hcd->regs, HC_PORT1_CTRL, PORT1_POWER | PORT1_INIT2); |
Thomas Hommel | 42c6539 | 2008-12-18 10:31:40 +0100 | [diff] [blame] | 517 | mdelay(10); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 518 | |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 519 | priv->hcs_params = reg_read32(hcd->regs, HC_HCSPARAMS); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 520 | |
| 521 | return priv_init(hcd); |
| 522 | } |
| 523 | |
| 524 | static void isp1760_init_maps(struct usb_hcd *hcd) |
| 525 | { |
| 526 | /*set last maps, for iso its only 1, else 32 tds bitmap*/ |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 527 | reg_write32(hcd->regs, HC_ATL_PTD_LASTPTD_REG, 0x80000000); |
| 528 | reg_write32(hcd->regs, HC_INT_PTD_LASTPTD_REG, 0x80000000); |
| 529 | reg_write32(hcd->regs, HC_ISO_PTD_LASTPTD_REG, 0x00000001); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 530 | } |
| 531 | |
| 532 | static void isp1760_enable_interrupts(struct usb_hcd *hcd) |
| 533 | { |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 534 | reg_write32(hcd->regs, HC_ATL_IRQ_MASK_AND_REG, 0); |
| 535 | reg_write32(hcd->regs, HC_ATL_IRQ_MASK_OR_REG, 0); |
| 536 | reg_write32(hcd->regs, HC_INT_IRQ_MASK_AND_REG, 0); |
| 537 | reg_write32(hcd->regs, HC_INT_IRQ_MASK_OR_REG, 0); |
| 538 | reg_write32(hcd->regs, HC_ISO_IRQ_MASK_AND_REG, 0); |
| 539 | reg_write32(hcd->regs, HC_ISO_IRQ_MASK_OR_REG, 0xffffffff); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 540 | /* step 23 passed */ |
| 541 | } |
| 542 | |
| 543 | static int isp1760_run(struct usb_hcd *hcd) |
| 544 | { |
| 545 | struct isp1760_hcd *priv = hcd_to_priv(hcd); |
| 546 | int retval; |
| 547 | u32 temp; |
| 548 | u32 command; |
| 549 | u32 chipid; |
| 550 | |
| 551 | hcd->uses_new_polling = 1; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 552 | |
| 553 | hcd->state = HC_STATE_RUNNING; |
| 554 | isp1760_enable_interrupts(hcd); |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 555 | temp = reg_read32(hcd->regs, HC_HW_MODE_CTRL); |
| 556 | 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] | 557 | |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 558 | command = reg_read32(hcd->regs, HC_USBCMD); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 559 | command &= ~(CMD_LRESET|CMD_RESET); |
| 560 | command |= CMD_RUN; |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 561 | reg_write32(hcd->regs, HC_USBCMD, command); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 562 | |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 563 | retval = handshake(hcd, HC_USBCMD, CMD_RUN, CMD_RUN, |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 564 | 250 * 1000); |
| 565 | if (retval) |
| 566 | return retval; |
| 567 | |
| 568 | /* |
| 569 | * XXX |
| 570 | * Spec says to write FLAG_CF as last config action, priv code grabs |
| 571 | * the semaphore while doing so. |
| 572 | */ |
| 573 | down_write(&ehci_cf_port_reset_rwsem); |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 574 | reg_write32(hcd->regs, HC_CONFIGFLAG, FLAG_CF); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 575 | |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 576 | retval = handshake(hcd, HC_CONFIGFLAG, FLAG_CF, FLAG_CF, 250 * 1000); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 577 | up_write(&ehci_cf_port_reset_rwsem); |
| 578 | if (retval) |
| 579 | return retval; |
| 580 | |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 581 | chipid = reg_read32(hcd->regs, HC_CHIP_ID_REG); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 582 | isp1760_info(priv, "USB ISP %04x HW rev. %d started\n", chipid & 0xffff, |
| 583 | chipid >> 16); |
| 584 | |
| 585 | /* PTD Register Init Part 2, Step 28 */ |
| 586 | /* enable INTs */ |
| 587 | isp1760_init_maps(hcd); |
| 588 | |
| 589 | /* GRR this is run-once init(), being done every time the HC starts. |
| 590 | * So long as they're part of class devices, we can't do it init() |
| 591 | * since the class device isn't created that early. |
| 592 | */ |
| 593 | return 0; |
| 594 | } |
| 595 | |
| 596 | static u32 base_to_chip(u32 base) |
| 597 | { |
| 598 | return ((base - 0x400) >> 3); |
| 599 | } |
| 600 | |
| 601 | static void transform_into_atl(struct isp1760_hcd *priv, struct isp1760_qh *qh, |
Arvid Brodin | a041d8e | 2011-02-26 22:04:40 +0100 | [diff] [blame^] | 602 | struct isp1760_qtd *qtd, struct ptd *ptd) |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 603 | { |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 604 | u32 maxpacket; |
| 605 | u32 multi; |
| 606 | u32 pid_code; |
| 607 | u32 rl = RL_COUNTER; |
| 608 | u32 nak = NAK_COUNTER; |
| 609 | |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 610 | memset(ptd, 0, sizeof(*ptd)); |
| 611 | |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 612 | /* according to 3.6.2, max packet len can not be > 0x400 */ |
Arvid Brodin | a041d8e | 2011-02-26 22:04:40 +0100 | [diff] [blame^] | 613 | maxpacket = usb_maxpacket(qtd->urb->dev, qtd->urb->pipe, |
| 614 | usb_pipeout(qtd->urb->pipe)); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 615 | multi = 1 + ((maxpacket >> 11) & 0x3); |
| 616 | maxpacket &= 0x7ff; |
| 617 | |
| 618 | /* DW0 */ |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 619 | ptd->dw0 = PTD_VALID; |
| 620 | ptd->dw0 |= PTD_LENGTH(qtd->length); |
| 621 | ptd->dw0 |= PTD_MAXPACKET(maxpacket); |
Arvid Brodin | a041d8e | 2011-02-26 22:04:40 +0100 | [diff] [blame^] | 622 | ptd->dw0 |= PTD_ENDPOINT(usb_pipeendpoint(qtd->urb->pipe)); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 623 | |
| 624 | /* DW1 */ |
Arvid Brodin | a041d8e | 2011-02-26 22:04:40 +0100 | [diff] [blame^] | 625 | ptd->dw1 = usb_pipeendpoint(qtd->urb->pipe) >> 1; |
| 626 | ptd->dw1 |= PTD_DEVICE_ADDR(usb_pipedevice(qtd->urb->pipe)); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 627 | |
| 628 | pid_code = qtd->packet_type; |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 629 | ptd->dw1 |= PTD_PID_TOKEN(pid_code); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 630 | |
Arvid Brodin | a041d8e | 2011-02-26 22:04:40 +0100 | [diff] [blame^] | 631 | if (usb_pipebulk(qtd->urb->pipe)) |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 632 | ptd->dw1 |= PTD_TRANS_BULK; |
Arvid Brodin | a041d8e | 2011-02-26 22:04:40 +0100 | [diff] [blame^] | 633 | else if (usb_pipeint(qtd->urb->pipe)) |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 634 | ptd->dw1 |= PTD_TRANS_INT; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 635 | |
Arvid Brodin | a041d8e | 2011-02-26 22:04:40 +0100 | [diff] [blame^] | 636 | if (qtd->urb->dev->speed != USB_SPEED_HIGH) { |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 637 | /* split transaction */ |
| 638 | |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 639 | ptd->dw1 |= PTD_TRANS_SPLIT; |
Arvid Brodin | a041d8e | 2011-02-26 22:04:40 +0100 | [diff] [blame^] | 640 | if (qtd->urb->dev->speed == USB_SPEED_LOW) |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 641 | ptd->dw1 |= PTD_SE_USB_LOSPEED; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 642 | |
Arvid Brodin | a041d8e | 2011-02-26 22:04:40 +0100 | [diff] [blame^] | 643 | ptd->dw1 |= PTD_PORT_NUM(qtd->urb->dev->ttport); |
| 644 | ptd->dw1 |= PTD_HUB_NUM(qtd->urb->dev->tt->hub->devnum); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 645 | |
| 646 | /* SE bit for Split INT transfers */ |
Arvid Brodin | a041d8e | 2011-02-26 22:04:40 +0100 | [diff] [blame^] | 647 | if (usb_pipeint(qtd->urb->pipe) && |
| 648 | (qtd->urb->dev->speed == USB_SPEED_LOW)) |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 649 | ptd->dw1 |= 2 << 16; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 650 | |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 651 | ptd->dw3 = 0; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 652 | rl = 0; |
| 653 | nak = 0; |
| 654 | } else { |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 655 | ptd->dw0 |= PTD_MULTI(multi); |
Arvid Brodin | a041d8e | 2011-02-26 22:04:40 +0100 | [diff] [blame^] | 656 | if (usb_pipecontrol(qtd->urb->pipe) || |
| 657 | usb_pipebulk(qtd->urb->pipe)) |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 658 | ptd->dw3 = qh->ping; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 659 | else |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 660 | ptd->dw3 = 0; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 661 | } |
| 662 | /* DW2 */ |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 663 | ptd->dw2 = 0; |
Arvid Brodin | a041d8e | 2011-02-26 22:04:40 +0100 | [diff] [blame^] | 664 | ptd->dw2 |= PTD_DATA_START_ADDR(base_to_chip(qtd->payload_addr)); |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 665 | ptd->dw2 |= PTD_RL_CNT(rl); |
| 666 | ptd->dw3 |= PTD_NAC_CNT(nak); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 667 | |
| 668 | /* DW3 */ |
Arvid Brodin | a041d8e | 2011-02-26 22:04:40 +0100 | [diff] [blame^] | 669 | if (usb_pipecontrol(qtd->urb->pipe)) |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 670 | ptd->dw3 |= PTD_DATA_TOGGLE(qtd->toggle); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 671 | else |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 672 | ptd->dw3 |= qh->toggle; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 673 | |
| 674 | |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 675 | ptd->dw3 |= PTD_ACTIVE; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 676 | /* Cerr */ |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 677 | ptd->dw3 |= PTD_CERR(ERR_COUNTER); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 678 | } |
| 679 | |
| 680 | static void transform_add_int(struct isp1760_hcd *priv, struct isp1760_qh *qh, |
Arvid Brodin | a041d8e | 2011-02-26 22:04:40 +0100 | [diff] [blame^] | 681 | struct isp1760_qtd *qtd, struct ptd *ptd) |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 682 | { |
| 683 | u32 maxpacket; |
| 684 | u32 multi; |
| 685 | u32 numberofusofs; |
| 686 | u32 i; |
| 687 | u32 usofmask, usof; |
| 688 | u32 period; |
| 689 | |
Arvid Brodin | a041d8e | 2011-02-26 22:04:40 +0100 | [diff] [blame^] | 690 | maxpacket = usb_maxpacket(qtd->urb->dev, qtd->urb->pipe, |
| 691 | usb_pipeout(qtd->urb->pipe)); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 692 | multi = 1 + ((maxpacket >> 11) & 0x3); |
| 693 | maxpacket &= 0x7ff; |
| 694 | /* length of the data per uframe */ |
| 695 | maxpacket = multi * maxpacket; |
| 696 | |
Arvid Brodin | a041d8e | 2011-02-26 22:04:40 +0100 | [diff] [blame^] | 697 | numberofusofs = qtd->urb->transfer_buffer_length / maxpacket; |
| 698 | if (qtd->urb->transfer_buffer_length % maxpacket) |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 699 | numberofusofs += 1; |
| 700 | |
| 701 | usofmask = 1; |
| 702 | usof = 0; |
| 703 | for (i = 0; i < numberofusofs; i++) { |
| 704 | usof |= usofmask; |
| 705 | usofmask <<= 1; |
| 706 | } |
| 707 | |
Arvid Brodin | a041d8e | 2011-02-26 22:04:40 +0100 | [diff] [blame^] | 708 | if (qtd->urb->dev->speed != USB_SPEED_HIGH) { |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 709 | /* split */ |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 710 | ptd->dw5 = 0x1c; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 711 | |
| 712 | if (qh->period >= 32) |
| 713 | period = qh->period / 2; |
| 714 | else |
| 715 | period = qh->period; |
| 716 | |
| 717 | } else { |
| 718 | |
| 719 | if (qh->period >= 8) |
| 720 | period = qh->period/8; |
| 721 | else |
| 722 | period = qh->period; |
| 723 | |
| 724 | if (period >= 32) |
| 725 | period = 16; |
| 726 | |
| 727 | if (qh->period >= 8) { |
| 728 | /* millisecond period */ |
| 729 | period = (period << 3); |
| 730 | } else { |
| 731 | /* usof based tranmsfers */ |
| 732 | /* minimum 4 usofs */ |
| 733 | usof = 0x11; |
| 734 | } |
| 735 | } |
| 736 | |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 737 | ptd->dw2 |= period; |
| 738 | ptd->dw4 = usof; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 739 | } |
| 740 | |
| 741 | static void transform_into_int(struct isp1760_hcd *priv, struct isp1760_qh *qh, |
Arvid Brodin | a041d8e | 2011-02-26 22:04:40 +0100 | [diff] [blame^] | 742 | struct isp1760_qtd *qtd, struct ptd *ptd) |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 743 | { |
Arvid Brodin | a041d8e | 2011-02-26 22:04:40 +0100 | [diff] [blame^] | 744 | transform_into_atl(priv, qh, qtd, ptd); |
| 745 | transform_add_int(priv, qh, qtd, ptd); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 746 | } |
| 747 | |
| 748 | static int qtd_fill(struct isp1760_qtd *qtd, void *databuffer, size_t len, |
| 749 | u32 token) |
| 750 | { |
| 751 | int count; |
| 752 | |
| 753 | qtd->data_buffer = databuffer; |
| 754 | qtd->packet_type = GET_QTD_TOKEN_TYPE(token); |
| 755 | qtd->toggle = GET_DATA_TOGGLE(token); |
| 756 | |
Arvid Brodin | a041d8e | 2011-02-26 22:04:40 +0100 | [diff] [blame^] | 757 | if (len > MAX_PAYLOAD_SIZE) |
| 758 | count = MAX_PAYLOAD_SIZE; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 759 | else |
| 760 | count = len; |
| 761 | |
| 762 | qtd->length = count; |
| 763 | return count; |
| 764 | } |
| 765 | |
| 766 | static int check_error(struct ptd *ptd) |
| 767 | { |
| 768 | int error = 0; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 769 | |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 770 | if (ptd->dw3 & DW3_HALT_BIT) { |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 771 | error = -EPIPE; |
| 772 | |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 773 | if (ptd->dw3 & DW3_ERROR_BIT) |
Anton Vorontsov | 0954e1c | 2010-05-07 01:09:19 +0400 | [diff] [blame] | 774 | pr_err("error bit is set in DW3\n"); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 775 | } |
| 776 | |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 777 | if (ptd->dw3 & DW3_QTD_ACTIVE) { |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 778 | printk(KERN_ERR "transfer active bit is set DW3\n"); |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 779 | printk(KERN_ERR "nak counter: %d, rl: %d\n", |
| 780 | (ptd->dw3 >> 19) & 0xf, (ptd->dw2 >> 25) & 0xf); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 781 | } |
| 782 | |
| 783 | return error; |
| 784 | } |
| 785 | |
| 786 | static void check_int_err_status(u32 dw4) |
| 787 | { |
| 788 | u32 i; |
| 789 | |
| 790 | dw4 >>= 8; |
| 791 | |
| 792 | for (i = 0; i < 8; i++) { |
| 793 | switch (dw4 & 0x7) { |
| 794 | case INT_UNDERRUN: |
| 795 | printk(KERN_ERR "ERROR: under run , %d\n", i); |
| 796 | break; |
| 797 | |
| 798 | case INT_EXACT: |
| 799 | printk(KERN_ERR "ERROR: transaction error, %d\n", i); |
| 800 | break; |
| 801 | |
| 802 | case INT_BABBLE: |
| 803 | printk(KERN_ERR "ERROR: babble error, %d\n", i); |
| 804 | break; |
| 805 | } |
| 806 | dw4 >>= 3; |
| 807 | } |
| 808 | } |
| 809 | |
Arvid Brodin | a041d8e | 2011-02-26 22:04:40 +0100 | [diff] [blame^] | 810 | static void enqueue_one_qtd(struct isp1760_qtd *qtd, struct isp1760_hcd *priv) |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 811 | { |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 812 | struct usb_hcd *hcd = priv_to_hcd(priv); |
| 813 | |
Arvid Brodin | a041d8e | 2011-02-26 22:04:40 +0100 | [diff] [blame^] | 814 | if (qtd->length && (qtd->length <= MAX_PAYLOAD_SIZE)) { |
| 815 | switch (qtd->packet_type) { |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 816 | case IN_PID: |
| 817 | break; |
| 818 | case OUT_PID: |
| 819 | case SETUP_PID: |
Arvid Brodin | a041d8e | 2011-02-26 22:04:40 +0100 | [diff] [blame^] | 820 | mem_writes8(hcd->regs, qtd->payload_addr, |
| 821 | qtd->data_buffer, qtd->length); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 822 | } |
| 823 | } |
| 824 | } |
| 825 | |
Arvid Brodin | a041d8e | 2011-02-26 22:04:40 +0100 | [diff] [blame^] | 826 | static void enqueue_one_atl_qtd(struct isp1760_hcd *priv, |
| 827 | struct isp1760_qh *qh, u32 slot, |
| 828 | struct isp1760_qtd *qtd) |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 829 | { |
| 830 | struct ptd ptd; |
| 831 | struct usb_hcd *hcd = priv_to_hcd(priv); |
| 832 | |
Arvid Brodin | a041d8e | 2011-02-26 22:04:40 +0100 | [diff] [blame^] | 833 | alloc_mem(priv, qtd); |
| 834 | transform_into_atl(priv, qh, qtd, &ptd); |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 835 | ptd_write(hcd->regs, ATL_PTD_OFFSET, slot, &ptd); |
Arvid Brodin | a041d8e | 2011-02-26 22:04:40 +0100 | [diff] [blame^] | 836 | enqueue_one_qtd(qtd, priv); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 837 | |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 838 | priv->atl_ints[slot].qh = qh; |
| 839 | priv->atl_ints[slot].qtd = qtd; |
| 840 | priv->atl_ints[slot].data_buffer = qtd->data_buffer; |
Arvid Brodin | fd436ae | 2011-02-26 22:03:49 +0100 | [diff] [blame] | 841 | qtd->status |= URB_ENQUEUED; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 842 | qtd->status |= slot << 16; |
| 843 | } |
| 844 | |
Arvid Brodin | a041d8e | 2011-02-26 22:04:40 +0100 | [diff] [blame^] | 845 | static void enqueue_one_int_qtd(struct isp1760_hcd *priv, |
| 846 | struct isp1760_qh *qh, u32 slot, |
| 847 | struct isp1760_qtd *qtd) |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 848 | { |
| 849 | struct ptd ptd; |
| 850 | struct usb_hcd *hcd = priv_to_hcd(priv); |
| 851 | |
Arvid Brodin | a041d8e | 2011-02-26 22:04:40 +0100 | [diff] [blame^] | 852 | alloc_mem(priv, qtd); |
| 853 | transform_into_int(priv, qh, qtd, &ptd); |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 854 | ptd_write(hcd->regs, INT_PTD_OFFSET, slot, &ptd); |
Arvid Brodin | a041d8e | 2011-02-26 22:04:40 +0100 | [diff] [blame^] | 855 | enqueue_one_qtd(qtd, priv); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 856 | |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 857 | priv->int_ints[slot].qh = qh; |
| 858 | priv->int_ints[slot].qtd = qtd; |
| 859 | priv->int_ints[slot].data_buffer = qtd->data_buffer; |
Arvid Brodin | fd436ae | 2011-02-26 22:03:49 +0100 | [diff] [blame] | 860 | qtd->status |= URB_ENQUEUED; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 861 | qtd->status |= slot << 16; |
| 862 | } |
| 863 | |
Adrian Bunk | 473bca9 | 2008-05-05 21:25:33 +0300 | [diff] [blame] | 864 | static void enqueue_an_ATL_packet(struct usb_hcd *hcd, struct isp1760_qh *qh, |
| 865 | struct isp1760_qtd *qtd) |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 866 | { |
| 867 | struct isp1760_hcd *priv = hcd_to_priv(hcd); |
| 868 | u32 skip_map, or_map; |
| 869 | u32 queue_entry; |
| 870 | u32 slot; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 871 | u32 buffstatus; |
| 872 | |
Catalin Marinas | e6bdfe3 | 2009-03-23 12:38:16 +0000 | [diff] [blame] | 873 | /* |
| 874 | * When this function is called from the interrupt handler to enqueue |
| 875 | * a follow-up packet, the SKIP register gets written and read back |
| 876 | * almost immediately. With ISP1761, this register requires a delay of |
| 877 | * 195ns between a write and subsequent read (see section 15.1.1.3). |
| 878 | */ |
Michael Hennerich | ebb8a4e | 2010-08-05 17:53:57 -0400 | [diff] [blame] | 879 | mmiowb(); |
Catalin Marinas | e6bdfe3 | 2009-03-23 12:38:16 +0000 | [diff] [blame] | 880 | ndelay(195); |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 881 | skip_map = reg_read32(hcd->regs, HC_ATL_PTD_SKIPMAP_REG); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 882 | |
| 883 | BUG_ON(!skip_map); |
| 884 | slot = __ffs(skip_map); |
| 885 | queue_entry = 1 << slot; |
| 886 | |
Arvid Brodin | a041d8e | 2011-02-26 22:04:40 +0100 | [diff] [blame^] | 887 | enqueue_one_atl_qtd(priv, qh, slot, qtd); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 888 | |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 889 | or_map = reg_read32(hcd->regs, HC_ATL_IRQ_MASK_OR_REG); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 890 | or_map |= queue_entry; |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 891 | reg_write32(hcd->regs, HC_ATL_IRQ_MASK_OR_REG, or_map); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 892 | |
| 893 | skip_map &= ~queue_entry; |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 894 | reg_write32(hcd->regs, HC_ATL_PTD_SKIPMAP_REG, skip_map); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 895 | |
Sebastian Andrzej Siewior | b14e840 | 2011-02-08 21:07:40 +0100 | [diff] [blame] | 896 | priv->atl_queued++; |
| 897 | if (priv->atl_queued == 2) |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 898 | reg_write32(hcd->regs, HC_INTERRUPT_ENABLE, |
| 899 | INTERRUPT_ENABLE_SOT_MASK); |
Sebastian Andrzej Siewior | b14e840 | 2011-02-08 21:07:40 +0100 | [diff] [blame] | 900 | |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 901 | buffstatus = reg_read32(hcd->regs, HC_BUFFER_STATUS_REG); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 902 | buffstatus |= ATL_BUFFER; |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 903 | reg_write32(hcd->regs, HC_BUFFER_STATUS_REG, buffstatus); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 904 | } |
| 905 | |
Adrian Bunk | 473bca9 | 2008-05-05 21:25:33 +0300 | [diff] [blame] | 906 | static void enqueue_an_INT_packet(struct usb_hcd *hcd, struct isp1760_qh *qh, |
| 907 | struct isp1760_qtd *qtd) |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 908 | { |
| 909 | struct isp1760_hcd *priv = hcd_to_priv(hcd); |
| 910 | u32 skip_map, or_map; |
| 911 | u32 queue_entry; |
| 912 | u32 slot; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 913 | u32 buffstatus; |
| 914 | |
Catalin Marinas | e6bdfe3 | 2009-03-23 12:38:16 +0000 | [diff] [blame] | 915 | /* |
| 916 | * When this function is called from the interrupt handler to enqueue |
| 917 | * a follow-up packet, the SKIP register gets written and read back |
| 918 | * almost immediately. With ISP1761, this register requires a delay of |
| 919 | * 195ns between a write and subsequent read (see section 15.1.1.3). |
| 920 | */ |
Michael Hennerich | ebb8a4e | 2010-08-05 17:53:57 -0400 | [diff] [blame] | 921 | mmiowb(); |
Catalin Marinas | e6bdfe3 | 2009-03-23 12:38:16 +0000 | [diff] [blame] | 922 | ndelay(195); |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 923 | skip_map = reg_read32(hcd->regs, HC_INT_PTD_SKIPMAP_REG); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 924 | |
| 925 | BUG_ON(!skip_map); |
| 926 | slot = __ffs(skip_map); |
| 927 | queue_entry = 1 << slot; |
| 928 | |
Arvid Brodin | a041d8e | 2011-02-26 22:04:40 +0100 | [diff] [blame^] | 929 | enqueue_one_int_qtd(priv, qh, slot, qtd); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 930 | |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 931 | or_map = reg_read32(hcd->regs, HC_INT_IRQ_MASK_OR_REG); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 932 | or_map |= queue_entry; |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 933 | reg_write32(hcd->regs, HC_INT_IRQ_MASK_OR_REG, or_map); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 934 | |
| 935 | skip_map &= ~queue_entry; |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 936 | reg_write32(hcd->regs, HC_INT_PTD_SKIPMAP_REG, skip_map); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 937 | |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 938 | buffstatus = reg_read32(hcd->regs, HC_BUFFER_STATUS_REG); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 939 | buffstatus |= INT_BUFFER; |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 940 | reg_write32(hcd->regs, HC_BUFFER_STATUS_REG, buffstatus); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 941 | } |
| 942 | |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 943 | static void isp1760_urb_done(struct isp1760_hcd *priv, struct urb *urb, |
| 944 | int status) |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 945 | __releases(priv->lock) |
| 946 | __acquires(priv->lock) |
| 947 | { |
| 948 | if (!urb->unlinked) { |
| 949 | if (status == -EINPROGRESS) |
| 950 | status = 0; |
| 951 | } |
| 952 | |
Catalin Marinas | db8516f | 2010-02-02 15:31:02 +0000 | [diff] [blame] | 953 | if (usb_pipein(urb->pipe) && usb_pipetype(urb->pipe) != PIPE_CONTROL) { |
| 954 | void *ptr; |
| 955 | for (ptr = urb->transfer_buffer; |
| 956 | ptr < urb->transfer_buffer + urb->transfer_buffer_length; |
| 957 | ptr += PAGE_SIZE) |
| 958 | flush_dcache_page(virt_to_page(ptr)); |
| 959 | } |
| 960 | |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 961 | /* complete() can reenter this HCD */ |
| 962 | usb_hcd_unlink_urb_from_ep(priv_to_hcd(priv), urb); |
| 963 | spin_unlock(&priv->lock); |
| 964 | usb_hcd_giveback_urb(priv_to_hcd(priv), urb, status); |
| 965 | spin_lock(&priv->lock); |
| 966 | } |
| 967 | |
| 968 | static void isp1760_qtd_free(struct isp1760_qtd *qtd) |
| 969 | { |
Arvid Brodin | a041d8e | 2011-02-26 22:04:40 +0100 | [diff] [blame^] | 970 | BUG_ON(qtd->payload_addr); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 971 | kmem_cache_free(qtd_cachep, qtd); |
| 972 | } |
| 973 | |
Arvid Brodin | fd436ae | 2011-02-26 22:03:49 +0100 | [diff] [blame] | 974 | static struct isp1760_qtd *clean_this_qtd(struct isp1760_qtd *qtd, |
| 975 | struct isp1760_qh *qh) |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 976 | { |
| 977 | struct isp1760_qtd *tmp_qtd; |
| 978 | |
Arvid Brodin | fd436ae | 2011-02-26 22:03:49 +0100 | [diff] [blame] | 979 | if (list_is_last(&qtd->qtd_list, &qh->qtd_list)) |
| 980 | tmp_qtd = NULL; |
| 981 | else |
| 982 | tmp_qtd = list_entry(qtd->qtd_list.next, struct isp1760_qtd, |
| 983 | qtd_list); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 984 | list_del(&qtd->qtd_list); |
| 985 | isp1760_qtd_free(qtd); |
| 986 | return tmp_qtd; |
| 987 | } |
| 988 | |
| 989 | /* |
| 990 | * Remove this QTD from the QH list and free its memory. If this QTD |
| 991 | * isn't the last one than remove also his successor(s). |
| 992 | * Returns the QTD which is part of an new URB and should be enqueued. |
| 993 | */ |
Arvid Brodin | fd436ae | 2011-02-26 22:03:49 +0100 | [diff] [blame] | 994 | static struct isp1760_qtd *clean_up_qtdlist(struct isp1760_qtd *qtd, |
| 995 | struct isp1760_qh *qh) |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 996 | { |
Arvid Brodin | fd436ae | 2011-02-26 22:03:49 +0100 | [diff] [blame] | 997 | struct urb *urb; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 998 | |
Arvid Brodin | fd436ae | 2011-02-26 22:03:49 +0100 | [diff] [blame] | 999 | urb = qtd->urb; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1000 | do { |
Arvid Brodin | fd436ae | 2011-02-26 22:03:49 +0100 | [diff] [blame] | 1001 | qtd = clean_this_qtd(qtd, qh); |
| 1002 | } while (qtd && (qtd->urb == urb)); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1003 | |
| 1004 | return qtd; |
| 1005 | } |
| 1006 | |
Arvid Brodin | fd436ae | 2011-02-26 22:03:49 +0100 | [diff] [blame] | 1007 | static int last_qtd_of_urb(struct isp1760_qtd *qtd, struct isp1760_qh *qh) |
| 1008 | { |
| 1009 | struct urb *urb; |
| 1010 | |
| 1011 | if (list_is_last(&qtd->qtd_list, &qh->qtd_list)) |
| 1012 | return 1; |
| 1013 | |
| 1014 | urb = qtd->urb; |
| 1015 | qtd = list_entry(qtd->qtd_list.next, typeof(*qtd), qtd_list); |
| 1016 | return (qtd->urb != urb); |
| 1017 | } |
| 1018 | |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 1019 | static void do_atl_int(struct usb_hcd *hcd) |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1020 | { |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 1021 | struct isp1760_hcd *priv = hcd_to_priv(hcd); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1022 | u32 done_map, skip_map; |
| 1023 | struct ptd ptd; |
| 1024 | struct urb *urb = NULL; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1025 | u32 queue_entry; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1026 | u32 length; |
| 1027 | u32 or_map; |
| 1028 | u32 status = -EINVAL; |
| 1029 | int error; |
| 1030 | struct isp1760_qtd *qtd; |
| 1031 | struct isp1760_qh *qh; |
| 1032 | u32 rl; |
| 1033 | u32 nakcount; |
| 1034 | |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 1035 | done_map = reg_read32(hcd->regs, HC_ATL_PTD_DONEMAP_REG); |
| 1036 | skip_map = reg_read32(hcd->regs, HC_ATL_PTD_SKIPMAP_REG); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1037 | |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 1038 | or_map = reg_read32(hcd->regs, HC_ATL_IRQ_MASK_OR_REG); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1039 | or_map &= ~done_map; |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 1040 | reg_write32(hcd->regs, HC_ATL_IRQ_MASK_OR_REG, or_map); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1041 | |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1042 | while (done_map) { |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1043 | status = 0; |
Sebastian Andrzej Siewior | b14e840 | 2011-02-08 21:07:40 +0100 | [diff] [blame] | 1044 | priv->atl_queued--; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1045 | |
| 1046 | queue_entry = __ffs(done_map); |
| 1047 | done_map &= ~(1 << queue_entry); |
| 1048 | skip_map |= 1 << queue_entry; |
| 1049 | |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1050 | qtd = priv->atl_ints[queue_entry].qtd; |
Arvid Brodin | fd436ae | 2011-02-26 22:03:49 +0100 | [diff] [blame] | 1051 | urb = qtd->urb; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1052 | qh = priv->atl_ints[queue_entry].qh; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1053 | |
| 1054 | if (!qh) { |
| 1055 | printk(KERN_ERR "qh is 0\n"); |
| 1056 | continue; |
| 1057 | } |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 1058 | ptd_read(hcd->regs, ATL_PTD_OFFSET, queue_entry, &ptd); |
Enrico Scholz | 3f02a95 | 2008-07-17 20:09:30 +0200 | [diff] [blame] | 1059 | |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 1060 | rl = (ptd.dw2 >> 25) & 0x0f; |
| 1061 | nakcount = (ptd.dw3 >> 19) & 0xf; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1062 | |
| 1063 | /* Transfer Error, *but* active and no HALT -> reload */ |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 1064 | if ((ptd.dw3 & DW3_ERROR_BIT) && (ptd.dw3 & DW3_QTD_ACTIVE) && |
| 1065 | !(ptd.dw3 & DW3_HALT_BIT)) { |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1066 | |
| 1067 | /* according to ppriv code, we have to |
| 1068 | * reload this one if trasfered bytes != requested bytes |
| 1069 | * else act like everything went smooth.. |
| 1070 | * XXX This just doesn't feel right and hasn't |
| 1071 | * triggered so far. |
| 1072 | */ |
| 1073 | |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 1074 | length = PTD_XFERRED_LENGTH(ptd.dw3); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1075 | printk(KERN_ERR "Should reload now.... transfered %d " |
| 1076 | "of %zu\n", length, qtd->length); |
| 1077 | BUG(); |
| 1078 | } |
| 1079 | |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 1080 | if (!nakcount && (ptd.dw3 & DW3_QTD_ACTIVE)) { |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1081 | u32 buffstatus; |
| 1082 | |
Colin Tuckley | c0d7414 | 2010-01-07 11:22:47 +0000 | [diff] [blame] | 1083 | /* |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1084 | * NAKs are handled in HW by the chip. Usually if the |
| 1085 | * device is not able to send data fast enough. |
Colin Tuckley | c0d7414 | 2010-01-07 11:22:47 +0000 | [diff] [blame] | 1086 | * This happens mostly on slower hardware. |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1087 | */ |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1088 | |
| 1089 | /* RL counter = ERR counter */ |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 1090 | ptd.dw3 &= ~(0xf << 19); |
| 1091 | ptd.dw3 |= rl << 19; |
| 1092 | ptd.dw3 &= ~(3 << (55 - 32)); |
| 1093 | ptd.dw3 |= ERR_COUNTER << (55 - 32); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1094 | |
| 1095 | /* |
| 1096 | * It is not needed to write skip map back because it |
| 1097 | * is unchanged. Just make sure that this entry is |
| 1098 | * unskipped once it gets written to the HW. |
| 1099 | */ |
| 1100 | skip_map &= ~(1 << queue_entry); |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 1101 | or_map = reg_read32(hcd->regs, HC_ATL_IRQ_MASK_OR_REG); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1102 | or_map |= 1 << queue_entry; |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 1103 | reg_write32(hcd->regs, HC_ATL_IRQ_MASK_OR_REG, or_map); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1104 | |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 1105 | ptd.dw0 |= PTD_VALID; |
| 1106 | ptd_write(hcd->regs, ATL_PTD_OFFSET, queue_entry, &ptd); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1107 | |
Sebastian Andrzej Siewior | b14e840 | 2011-02-08 21:07:40 +0100 | [diff] [blame] | 1108 | priv->atl_queued++; |
| 1109 | if (priv->atl_queued == 2) |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 1110 | reg_write32(hcd->regs, HC_INTERRUPT_ENABLE, |
| 1111 | INTERRUPT_ENABLE_SOT_MASK); |
Sebastian Andrzej Siewior | b14e840 | 2011-02-08 21:07:40 +0100 | [diff] [blame] | 1112 | |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 1113 | buffstatus = reg_read32(hcd->regs, |
| 1114 | HC_BUFFER_STATUS_REG); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1115 | buffstatus |= ATL_BUFFER; |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 1116 | reg_write32(hcd->regs, HC_BUFFER_STATUS_REG, |
| 1117 | buffstatus); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1118 | continue; |
| 1119 | } |
| 1120 | |
| 1121 | error = check_error(&ptd); |
| 1122 | if (error) { |
| 1123 | status = error; |
| 1124 | priv->atl_ints[queue_entry].qh->toggle = 0; |
| 1125 | priv->atl_ints[queue_entry].qh->ping = 0; |
| 1126 | urb->status = -EPIPE; |
| 1127 | |
| 1128 | #if 0 |
| 1129 | printk(KERN_ERR "Error in %s().\n", __func__); |
| 1130 | printk(KERN_ERR "IN dw0: %08x dw1: %08x dw2: %08x " |
| 1131 | "dw3: %08x dw4: %08x dw5: %08x dw6: " |
| 1132 | "%08x dw7: %08x\n", |
| 1133 | ptd.dw0, ptd.dw1, ptd.dw2, ptd.dw3, |
| 1134 | ptd.dw4, ptd.dw5, ptd.dw6, ptd.dw7); |
| 1135 | #endif |
| 1136 | } else { |
| 1137 | if (usb_pipetype(urb->pipe) == PIPE_BULK) { |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 1138 | priv->atl_ints[queue_entry].qh->toggle = |
| 1139 | ptd.dw3 & (1 << 25); |
| 1140 | priv->atl_ints[queue_entry].qh->ping = |
| 1141 | ptd.dw3 & (1 << 26); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1142 | } |
| 1143 | } |
| 1144 | |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 1145 | length = PTD_XFERRED_LENGTH(ptd.dw3); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1146 | if (length) { |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 1147 | switch (DW1_GET_PID(ptd.dw1)) { |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1148 | case IN_PID: |
Arvid Brodin | a041d8e | 2011-02-26 22:04:40 +0100 | [diff] [blame^] | 1149 | mem_reads8(hcd->regs, qtd->payload_addr, |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1150 | priv->atl_ints[queue_entry].data_buffer, |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1151 | length); |
| 1152 | |
| 1153 | case OUT_PID: |
| 1154 | |
| 1155 | urb->actual_length += length; |
| 1156 | |
| 1157 | case SETUP_PID: |
| 1158 | break; |
| 1159 | } |
| 1160 | } |
| 1161 | |
| 1162 | priv->atl_ints[queue_entry].data_buffer = NULL; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1163 | priv->atl_ints[queue_entry].qtd = NULL; |
| 1164 | priv->atl_ints[queue_entry].qh = NULL; |
| 1165 | |
Arvid Brodin | a041d8e | 2011-02-26 22:04:40 +0100 | [diff] [blame^] | 1166 | free_mem(priv, qtd); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1167 | |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 1168 | reg_write32(hcd->regs, HC_ATL_PTD_SKIPMAP_REG, skip_map); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1169 | |
| 1170 | if (urb->status == -EPIPE) { |
| 1171 | /* HALT was received */ |
| 1172 | |
Arvid Brodin | fd436ae | 2011-02-26 22:03:49 +0100 | [diff] [blame] | 1173 | qtd = clean_up_qtdlist(qtd, qh); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1174 | isp1760_urb_done(priv, urb, urb->status); |
| 1175 | |
| 1176 | } else if (usb_pipebulk(urb->pipe) && (length < qtd->length)) { |
| 1177 | /* short BULK received */ |
| 1178 | |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1179 | if (urb->transfer_flags & URB_SHORT_NOT_OK) { |
| 1180 | urb->status = -EREMOTEIO; |
Sebastian Siewior | 7839b51 | 2008-07-17 20:09:29 +0200 | [diff] [blame] | 1181 | isp1760_dbg(priv, "short bulk, %d instead %zu " |
| 1182 | "with URB_SHORT_NOT_OK flag.\n", |
| 1183 | length, qtd->length); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1184 | } |
| 1185 | |
| 1186 | if (urb->status == -EINPROGRESS) |
| 1187 | urb->status = 0; |
| 1188 | |
Arvid Brodin | fd436ae | 2011-02-26 22:03:49 +0100 | [diff] [blame] | 1189 | qtd = clean_up_qtdlist(qtd, qh); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1190 | |
| 1191 | isp1760_urb_done(priv, urb, urb->status); |
| 1192 | |
Arvid Brodin | fd436ae | 2011-02-26 22:03:49 +0100 | [diff] [blame] | 1193 | } else if (last_qtd_of_urb(qtd, qh)) { |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1194 | /* that was the last qtd of that URB */ |
| 1195 | |
| 1196 | if (urb->status == -EINPROGRESS) |
| 1197 | urb->status = 0; |
| 1198 | |
Arvid Brodin | fd436ae | 2011-02-26 22:03:49 +0100 | [diff] [blame] | 1199 | qtd = clean_this_qtd(qtd, qh); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1200 | isp1760_urb_done(priv, urb, urb->status); |
| 1201 | |
| 1202 | } else { |
| 1203 | /* next QTD of this URB */ |
| 1204 | |
Arvid Brodin | fd436ae | 2011-02-26 22:03:49 +0100 | [diff] [blame] | 1205 | qtd = clean_this_qtd(qtd, qh); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1206 | BUG_ON(!qtd); |
| 1207 | } |
| 1208 | |
| 1209 | if (qtd) |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 1210 | enqueue_an_ATL_packet(hcd, qh, qtd); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1211 | |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 1212 | skip_map = reg_read32(hcd->regs, HC_ATL_PTD_SKIPMAP_REG); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1213 | } |
Sebastian Andrzej Siewior | b14e840 | 2011-02-08 21:07:40 +0100 | [diff] [blame] | 1214 | if (priv->atl_queued <= 1) |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 1215 | reg_write32(hcd->regs, HC_INTERRUPT_ENABLE, |
| 1216 | INTERRUPT_ENABLE_MASK); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1217 | } |
| 1218 | |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 1219 | static void do_intl_int(struct usb_hcd *hcd) |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1220 | { |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 1221 | struct isp1760_hcd *priv = hcd_to_priv(hcd); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1222 | u32 done_map, skip_map; |
| 1223 | struct ptd ptd; |
| 1224 | struct urb *urb = NULL; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1225 | u32 length; |
| 1226 | u32 or_map; |
| 1227 | int error; |
| 1228 | u32 queue_entry; |
| 1229 | struct isp1760_qtd *qtd; |
| 1230 | struct isp1760_qh *qh; |
| 1231 | |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 1232 | done_map = reg_read32(hcd->regs, HC_INT_PTD_DONEMAP_REG); |
| 1233 | skip_map = reg_read32(hcd->regs, HC_INT_PTD_SKIPMAP_REG); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1234 | |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 1235 | or_map = reg_read32(hcd->regs, HC_INT_IRQ_MASK_OR_REG); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1236 | or_map &= ~done_map; |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 1237 | reg_write32(hcd->regs, HC_INT_IRQ_MASK_OR_REG, or_map); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1238 | |
| 1239 | while (done_map) { |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1240 | queue_entry = __ffs(done_map); |
| 1241 | done_map &= ~(1 << queue_entry); |
| 1242 | skip_map |= 1 << queue_entry; |
| 1243 | |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1244 | qtd = priv->int_ints[queue_entry].qtd; |
Arvid Brodin | fd436ae | 2011-02-26 22:03:49 +0100 | [diff] [blame] | 1245 | urb = qtd->urb; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1246 | qh = priv->int_ints[queue_entry].qh; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1247 | |
| 1248 | if (!qh) { |
| 1249 | printk(KERN_ERR "(INT) qh is 0\n"); |
| 1250 | continue; |
| 1251 | } |
| 1252 | |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 1253 | ptd_read(hcd->regs, INT_PTD_OFFSET, queue_entry, &ptd); |
| 1254 | check_int_err_status(ptd.dw4); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1255 | |
| 1256 | error = check_error(&ptd); |
| 1257 | if (error) { |
| 1258 | #if 0 |
| 1259 | printk(KERN_ERR "Error in %s().\n", __func__); |
| 1260 | printk(KERN_ERR "IN dw0: %08x dw1: %08x dw2: %08x " |
| 1261 | "dw3: %08x dw4: %08x dw5: %08x dw6: " |
| 1262 | "%08x dw7: %08x\n", |
| 1263 | ptd.dw0, ptd.dw1, ptd.dw2, ptd.dw3, |
| 1264 | ptd.dw4, ptd.dw5, ptd.dw6, ptd.dw7); |
| 1265 | #endif |
| 1266 | urb->status = -EPIPE; |
| 1267 | priv->int_ints[queue_entry].qh->toggle = 0; |
| 1268 | priv->int_ints[queue_entry].qh->ping = 0; |
| 1269 | |
| 1270 | } else { |
| 1271 | priv->int_ints[queue_entry].qh->toggle = |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 1272 | ptd.dw3 & (1 << 25); |
| 1273 | priv->int_ints[queue_entry].qh->ping = |
| 1274 | ptd.dw3 & (1 << 26); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1275 | } |
| 1276 | |
| 1277 | if (urb->dev->speed != USB_SPEED_HIGH) |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 1278 | length = PTD_XFERRED_LENGTH_LO(ptd.dw3); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1279 | else |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 1280 | length = PTD_XFERRED_LENGTH(ptd.dw3); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1281 | |
| 1282 | if (length) { |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 1283 | switch (DW1_GET_PID(ptd.dw1)) { |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1284 | case IN_PID: |
Arvid Brodin | a041d8e | 2011-02-26 22:04:40 +0100 | [diff] [blame^] | 1285 | mem_reads8(hcd->regs, qtd->payload_addr, |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1286 | priv->int_ints[queue_entry].data_buffer, |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1287 | length); |
| 1288 | case OUT_PID: |
| 1289 | |
| 1290 | urb->actual_length += length; |
| 1291 | |
| 1292 | case SETUP_PID: |
| 1293 | break; |
| 1294 | } |
| 1295 | } |
| 1296 | |
| 1297 | priv->int_ints[queue_entry].data_buffer = NULL; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1298 | priv->int_ints[queue_entry].qtd = NULL; |
| 1299 | priv->int_ints[queue_entry].qh = NULL; |
| 1300 | |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 1301 | reg_write32(hcd->regs, HC_INT_PTD_SKIPMAP_REG, skip_map); |
Arvid Brodin | a041d8e | 2011-02-26 22:04:40 +0100 | [diff] [blame^] | 1302 | free_mem(priv, qtd); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1303 | |
| 1304 | if (urb->status == -EPIPE) { |
| 1305 | /* HALT received */ |
| 1306 | |
Arvid Brodin | fd436ae | 2011-02-26 22:03:49 +0100 | [diff] [blame] | 1307 | qtd = clean_up_qtdlist(qtd, qh); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1308 | isp1760_urb_done(priv, urb, urb->status); |
| 1309 | |
Arvid Brodin | fd436ae | 2011-02-26 22:03:49 +0100 | [diff] [blame] | 1310 | } else if (last_qtd_of_urb(qtd, qh)) { |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1311 | |
| 1312 | if (urb->status == -EINPROGRESS) |
| 1313 | urb->status = 0; |
| 1314 | |
Arvid Brodin | fd436ae | 2011-02-26 22:03:49 +0100 | [diff] [blame] | 1315 | qtd = clean_this_qtd(qtd, qh); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1316 | isp1760_urb_done(priv, urb, urb->status); |
| 1317 | |
| 1318 | } else { |
| 1319 | /* next QTD of this URB */ |
| 1320 | |
Arvid Brodin | fd436ae | 2011-02-26 22:03:49 +0100 | [diff] [blame] | 1321 | qtd = clean_this_qtd(qtd, qh); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1322 | BUG_ON(!qtd); |
| 1323 | } |
| 1324 | |
| 1325 | if (qtd) |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 1326 | enqueue_an_INT_packet(hcd, qh, qtd); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1327 | |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 1328 | skip_map = reg_read32(hcd->regs, HC_INT_PTD_SKIPMAP_REG); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1329 | } |
| 1330 | } |
| 1331 | |
| 1332 | #define max_packet(wMaxPacketSize) ((wMaxPacketSize) & 0x07ff) |
| 1333 | static struct isp1760_qh *qh_make(struct isp1760_hcd *priv, struct urb *urb, |
| 1334 | gfp_t flags) |
| 1335 | { |
| 1336 | struct isp1760_qh *qh; |
| 1337 | int is_input, type; |
| 1338 | |
| 1339 | qh = isp1760_qh_alloc(priv, flags); |
| 1340 | if (!qh) |
| 1341 | return qh; |
| 1342 | |
| 1343 | /* |
| 1344 | * init endpoint/device data for this QH |
| 1345 | */ |
| 1346 | is_input = usb_pipein(urb->pipe); |
| 1347 | type = usb_pipetype(urb->pipe); |
| 1348 | |
| 1349 | if (type == PIPE_INTERRUPT) { |
| 1350 | |
| 1351 | if (urb->dev->speed == USB_SPEED_HIGH) { |
| 1352 | |
| 1353 | qh->period = urb->interval >> 3; |
| 1354 | if (qh->period == 0 && urb->interval != 1) { |
| 1355 | /* NOTE interval 2 or 4 uframes could work. |
| 1356 | * But interval 1 scheduling is simpler, and |
| 1357 | * includes high bandwidth. |
| 1358 | */ |
| 1359 | printk(KERN_ERR "intr period %d uframes, NYET!", |
| 1360 | urb->interval); |
| 1361 | qh_destroy(qh); |
| 1362 | return NULL; |
| 1363 | } |
| 1364 | } else { |
| 1365 | qh->period = urb->interval; |
| 1366 | } |
| 1367 | } |
| 1368 | |
| 1369 | /* support for tt scheduling, and access to toggles */ |
| 1370 | qh->dev = urb->dev; |
| 1371 | |
| 1372 | if (!usb_pipecontrol(urb->pipe)) |
| 1373 | usb_settoggle(urb->dev, usb_pipeendpoint(urb->pipe), !is_input, |
| 1374 | 1); |
| 1375 | return qh; |
| 1376 | } |
| 1377 | |
| 1378 | /* |
| 1379 | * For control/bulk/interrupt, return QH with these TDs appended. |
| 1380 | * Allocates and initializes the QH if necessary. |
| 1381 | * Returns null if it can't allocate a QH it needs to. |
| 1382 | * If the QH has TDs (urbs) already, that's great. |
| 1383 | */ |
| 1384 | static struct isp1760_qh *qh_append_tds(struct isp1760_hcd *priv, |
| 1385 | struct urb *urb, struct list_head *qtd_list, int epnum, |
| 1386 | void **ptr) |
| 1387 | { |
| 1388 | struct isp1760_qh *qh; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1389 | |
| 1390 | qh = (struct isp1760_qh *)*ptr; |
| 1391 | if (!qh) { |
| 1392 | /* can't sleep here, we have priv->lock... */ |
| 1393 | qh = qh_make(priv, urb, GFP_ATOMIC); |
| 1394 | if (!qh) |
| 1395 | return qh; |
| 1396 | *ptr = qh; |
| 1397 | } |
| 1398 | |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1399 | list_splice(qtd_list, qh->qtd_list.prev); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1400 | |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1401 | return qh; |
| 1402 | } |
| 1403 | |
| 1404 | static void qtd_list_free(struct isp1760_hcd *priv, struct urb *urb, |
| 1405 | struct list_head *qtd_list) |
| 1406 | { |
| 1407 | struct list_head *entry, *temp; |
| 1408 | |
| 1409 | list_for_each_safe(entry, temp, qtd_list) { |
| 1410 | struct isp1760_qtd *qtd; |
| 1411 | |
| 1412 | qtd = list_entry(entry, struct isp1760_qtd, qtd_list); |
| 1413 | list_del(&qtd->qtd_list); |
| 1414 | isp1760_qtd_free(qtd); |
| 1415 | } |
| 1416 | } |
| 1417 | |
| 1418 | static int isp1760_prepare_enqueue(struct isp1760_hcd *priv, struct urb *urb, |
| 1419 | struct list_head *qtd_list, gfp_t mem_flags, packet_enqueue *p) |
| 1420 | { |
| 1421 | struct isp1760_qtd *qtd; |
| 1422 | int epnum; |
| 1423 | unsigned long flags; |
| 1424 | struct isp1760_qh *qh = NULL; |
| 1425 | int rc; |
| 1426 | int qh_busy; |
| 1427 | |
| 1428 | qtd = list_entry(qtd_list->next, struct isp1760_qtd, qtd_list); |
| 1429 | epnum = urb->ep->desc.bEndpointAddress; |
| 1430 | |
| 1431 | spin_lock_irqsave(&priv->lock, flags); |
Alan Stern | 541c7d4 | 2010-06-22 16:39:10 -0400 | [diff] [blame] | 1432 | if (!HCD_HW_ACCESSIBLE(priv_to_hcd(priv))) { |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1433 | rc = -ESHUTDOWN; |
| 1434 | goto done; |
| 1435 | } |
| 1436 | rc = usb_hcd_link_urb_to_ep(priv_to_hcd(priv), urb); |
| 1437 | if (rc) |
| 1438 | goto done; |
| 1439 | |
| 1440 | qh = urb->ep->hcpriv; |
| 1441 | if (qh) |
| 1442 | qh_busy = !list_empty(&qh->qtd_list); |
| 1443 | else |
| 1444 | qh_busy = 0; |
| 1445 | |
| 1446 | qh = qh_append_tds(priv, urb, qtd_list, epnum, &urb->ep->hcpriv); |
| 1447 | if (!qh) { |
| 1448 | usb_hcd_unlink_urb_from_ep(priv_to_hcd(priv), urb); |
| 1449 | rc = -ENOMEM; |
| 1450 | goto done; |
| 1451 | } |
| 1452 | |
| 1453 | if (!qh_busy) |
| 1454 | p(priv_to_hcd(priv), qh, qtd); |
| 1455 | |
| 1456 | done: |
| 1457 | spin_unlock_irqrestore(&priv->lock, flags); |
| 1458 | if (!qh) |
| 1459 | qtd_list_free(priv, urb, qtd_list); |
| 1460 | return rc; |
| 1461 | } |
| 1462 | |
| 1463 | static struct isp1760_qtd *isp1760_qtd_alloc(struct isp1760_hcd *priv, |
| 1464 | gfp_t flags) |
| 1465 | { |
| 1466 | struct isp1760_qtd *qtd; |
| 1467 | |
| 1468 | qtd = kmem_cache_zalloc(qtd_cachep, flags); |
| 1469 | if (qtd) |
| 1470 | INIT_LIST_HEAD(&qtd->qtd_list); |
| 1471 | |
| 1472 | return qtd; |
| 1473 | } |
| 1474 | |
| 1475 | /* |
| 1476 | * create a list of filled qtds for this URB; won't link into qh. |
| 1477 | */ |
| 1478 | static struct list_head *qh_urb_transaction(struct isp1760_hcd *priv, |
| 1479 | struct urb *urb, struct list_head *head, gfp_t flags) |
| 1480 | { |
Arvid Brodin | fd436ae | 2011-02-26 22:03:49 +0100 | [diff] [blame] | 1481 | struct isp1760_qtd *qtd; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1482 | void *buf; |
| 1483 | int len, maxpacket; |
| 1484 | int is_input; |
| 1485 | u32 token; |
| 1486 | |
| 1487 | /* |
| 1488 | * URBs map to sequences of QTDs: one logical transaction |
| 1489 | */ |
| 1490 | qtd = isp1760_qtd_alloc(priv, flags); |
| 1491 | if (!qtd) |
| 1492 | return NULL; |
| 1493 | |
| 1494 | list_add_tail(&qtd->qtd_list, head); |
| 1495 | qtd->urb = urb; |
| 1496 | urb->status = -EINPROGRESS; |
| 1497 | |
| 1498 | token = 0; |
| 1499 | /* for split transactions, SplitXState initialized to zero */ |
| 1500 | |
| 1501 | len = urb->transfer_buffer_length; |
| 1502 | is_input = usb_pipein(urb->pipe); |
| 1503 | if (usb_pipecontrol(urb->pipe)) { |
| 1504 | /* SETUP pid */ |
| 1505 | qtd_fill(qtd, urb->setup_packet, |
| 1506 | sizeof(struct usb_ctrlrequest), |
| 1507 | token | SETUP_PID); |
| 1508 | |
| 1509 | /* ... and always at least one more pid */ |
| 1510 | token ^= DATA_TOGGLE; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1511 | qtd = isp1760_qtd_alloc(priv, flags); |
| 1512 | if (!qtd) |
| 1513 | goto cleanup; |
| 1514 | qtd->urb = urb; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1515 | list_add_tail(&qtd->qtd_list, head); |
| 1516 | |
| 1517 | /* for zero length DATA stages, STATUS is always IN */ |
| 1518 | if (len == 0) |
| 1519 | token |= IN_PID; |
| 1520 | } |
| 1521 | |
| 1522 | /* |
| 1523 | * data transfer stage: buffer setup |
| 1524 | */ |
| 1525 | buf = urb->transfer_buffer; |
| 1526 | |
| 1527 | if (is_input) |
| 1528 | token |= IN_PID; |
| 1529 | else |
| 1530 | token |= OUT_PID; |
| 1531 | |
| 1532 | maxpacket = max_packet(usb_maxpacket(urb->dev, urb->pipe, !is_input)); |
| 1533 | |
| 1534 | /* |
| 1535 | * buffer gets wrapped in one or more qtds; |
| 1536 | * last one may be "short" (including zero len) |
| 1537 | * and may serve as a control status ack |
| 1538 | */ |
| 1539 | for (;;) { |
| 1540 | int this_qtd_len; |
| 1541 | |
| 1542 | if (!buf && len) { |
| 1543 | /* XXX This looks like usb storage / SCSI bug */ |
| 1544 | printk(KERN_ERR "buf is null, dma is %08lx len is %d\n", |
| 1545 | (long unsigned)urb->transfer_dma, len); |
| 1546 | WARN_ON(1); |
| 1547 | } |
| 1548 | |
| 1549 | this_qtd_len = qtd_fill(qtd, buf, len, token); |
| 1550 | len -= this_qtd_len; |
| 1551 | buf += this_qtd_len; |
| 1552 | |
| 1553 | /* qh makes control packets use qtd toggle; maybe switch it */ |
| 1554 | if ((maxpacket & (this_qtd_len + (maxpacket - 1))) == 0) |
| 1555 | token ^= DATA_TOGGLE; |
| 1556 | |
| 1557 | if (len <= 0) |
| 1558 | break; |
| 1559 | |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1560 | qtd = isp1760_qtd_alloc(priv, flags); |
| 1561 | if (!qtd) |
| 1562 | goto cleanup; |
| 1563 | qtd->urb = urb; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1564 | list_add_tail(&qtd->qtd_list, head); |
| 1565 | } |
| 1566 | |
| 1567 | /* |
| 1568 | * control requests may need a terminating data "status" ack; |
| 1569 | * bulk ones may need a terminating short packet (zero length). |
| 1570 | */ |
| 1571 | if (urb->transfer_buffer_length != 0) { |
| 1572 | int one_more = 0; |
| 1573 | |
| 1574 | if (usb_pipecontrol(urb->pipe)) { |
| 1575 | one_more = 1; |
| 1576 | /* "in" <--> "out" */ |
| 1577 | token ^= IN_PID; |
| 1578 | /* force DATA1 */ |
| 1579 | token |= DATA_TOGGLE; |
| 1580 | } else if (usb_pipebulk(urb->pipe) |
| 1581 | && (urb->transfer_flags & URB_ZERO_PACKET) |
| 1582 | && !(urb->transfer_buffer_length % maxpacket)) { |
| 1583 | one_more = 1; |
| 1584 | } |
| 1585 | if (one_more) { |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1586 | qtd = isp1760_qtd_alloc(priv, flags); |
| 1587 | if (!qtd) |
| 1588 | goto cleanup; |
| 1589 | qtd->urb = urb; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1590 | list_add_tail(&qtd->qtd_list, head); |
| 1591 | |
| 1592 | /* never any data in such packets */ |
| 1593 | qtd_fill(qtd, NULL, 0, token); |
| 1594 | } |
| 1595 | } |
| 1596 | |
Arvid Brodin | fd436ae | 2011-02-26 22:03:49 +0100 | [diff] [blame] | 1597 | qtd->status = 0; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1598 | return head; |
| 1599 | |
| 1600 | cleanup: |
| 1601 | qtd_list_free(priv, urb, head); |
| 1602 | return NULL; |
| 1603 | } |
| 1604 | |
| 1605 | static int isp1760_urb_enqueue(struct usb_hcd *hcd, struct urb *urb, |
| 1606 | gfp_t mem_flags) |
| 1607 | { |
| 1608 | struct isp1760_hcd *priv = hcd_to_priv(hcd); |
| 1609 | struct list_head qtd_list; |
| 1610 | packet_enqueue *pe; |
| 1611 | |
| 1612 | INIT_LIST_HEAD(&qtd_list); |
| 1613 | |
| 1614 | switch (usb_pipetype(urb->pipe)) { |
| 1615 | case PIPE_CONTROL: |
| 1616 | case PIPE_BULK: |
| 1617 | |
| 1618 | if (!qh_urb_transaction(priv, urb, &qtd_list, mem_flags)) |
| 1619 | return -ENOMEM; |
| 1620 | pe = enqueue_an_ATL_packet; |
| 1621 | break; |
| 1622 | |
| 1623 | case PIPE_INTERRUPT: |
| 1624 | if (!qh_urb_transaction(priv, urb, &qtd_list, mem_flags)) |
| 1625 | return -ENOMEM; |
| 1626 | pe = enqueue_an_INT_packet; |
| 1627 | break; |
| 1628 | |
| 1629 | case PIPE_ISOCHRONOUS: |
| 1630 | printk(KERN_ERR "PIPE_ISOCHRONOUS ain't supported\n"); |
| 1631 | default: |
| 1632 | return -EPIPE; |
| 1633 | } |
| 1634 | |
Sebastian Siewior | a36c27d | 2008-07-17 20:09:28 +0200 | [diff] [blame] | 1635 | return isp1760_prepare_enqueue(priv, urb, &qtd_list, mem_flags, pe); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1636 | } |
| 1637 | |
| 1638 | static int isp1760_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, |
| 1639 | int status) |
| 1640 | { |
| 1641 | struct isp1760_hcd *priv = hcd_to_priv(hcd); |
| 1642 | struct inter_packet_info *ints; |
| 1643 | u32 i; |
| 1644 | u32 reg_base, or_reg, skip_reg; |
Andrew Morton | d249afd | 2008-06-09 16:39:52 -0700 | [diff] [blame] | 1645 | unsigned long flags; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1646 | struct ptd ptd; |
Warren Free | 0afb20e | 2009-05-08 10:27:08 +0200 | [diff] [blame] | 1647 | packet_enqueue *pe; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1648 | |
| 1649 | switch (usb_pipetype(urb->pipe)) { |
| 1650 | case PIPE_ISOCHRONOUS: |
| 1651 | return -EPIPE; |
| 1652 | break; |
| 1653 | |
| 1654 | case PIPE_INTERRUPT: |
| 1655 | ints = priv->int_ints; |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 1656 | reg_base = INT_PTD_OFFSET; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1657 | or_reg = HC_INT_IRQ_MASK_OR_REG; |
| 1658 | skip_reg = HC_INT_PTD_SKIPMAP_REG; |
Warren Free | 0afb20e | 2009-05-08 10:27:08 +0200 | [diff] [blame] | 1659 | pe = enqueue_an_INT_packet; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1660 | break; |
| 1661 | |
| 1662 | default: |
| 1663 | ints = priv->atl_ints; |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 1664 | reg_base = ATL_PTD_OFFSET; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1665 | or_reg = HC_ATL_IRQ_MASK_OR_REG; |
| 1666 | skip_reg = HC_ATL_PTD_SKIPMAP_REG; |
Warren Free | 0afb20e | 2009-05-08 10:27:08 +0200 | [diff] [blame] | 1667 | pe = enqueue_an_ATL_packet; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1668 | break; |
| 1669 | } |
| 1670 | |
| 1671 | memset(&ptd, 0, sizeof(ptd)); |
| 1672 | spin_lock_irqsave(&priv->lock, flags); |
| 1673 | |
| 1674 | for (i = 0; i < 32; i++) { |
Arvid Brodin | fd436ae | 2011-02-26 22:03:49 +0100 | [diff] [blame] | 1675 | if (!ints[i].qh) |
| 1676 | continue; |
| 1677 | BUG_ON(!ints[i].qtd); |
| 1678 | |
| 1679 | if (ints[i].qtd->urb == urb) { |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1680 | u32 skip_map; |
| 1681 | u32 or_map; |
| 1682 | struct isp1760_qtd *qtd; |
Arvid Brodin | fd436ae | 2011-02-26 22:03:49 +0100 | [diff] [blame] | 1683 | struct isp1760_qh *qh; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1684 | |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 1685 | skip_map = reg_read32(hcd->regs, skip_reg); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1686 | skip_map |= 1 << i; |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 1687 | reg_write32(hcd->regs, skip_reg, skip_map); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1688 | |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 1689 | or_map = reg_read32(hcd->regs, or_reg); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1690 | or_map &= ~(1 << i); |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 1691 | reg_write32(hcd->regs, or_reg, or_map); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1692 | |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 1693 | ptd_write(hcd->regs, reg_base, i, &ptd); |
| 1694 | |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1695 | qtd = ints->qtd; |
Arvid Brodin | fd436ae | 2011-02-26 22:03:49 +0100 | [diff] [blame] | 1696 | qh = ints[i].qh; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1697 | |
Arvid Brodin | a041d8e | 2011-02-26 22:04:40 +0100 | [diff] [blame^] | 1698 | free_mem(priv, qtd); |
| 1699 | qtd = clean_up_qtdlist(qtd, qh); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1700 | |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1701 | ints->qh = NULL; |
| 1702 | ints->qtd = NULL; |
| 1703 | ints->data_buffer = NULL; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1704 | |
| 1705 | isp1760_urb_done(priv, urb, status); |
Warren Free | 0afb20e | 2009-05-08 10:27:08 +0200 | [diff] [blame] | 1706 | if (qtd) |
| 1707 | pe(hcd, qh, qtd); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1708 | break; |
Warren Free | 0afb20e | 2009-05-08 10:27:08 +0200 | [diff] [blame] | 1709 | |
Arvid Brodin | fd436ae | 2011-02-26 22:03:49 +0100 | [diff] [blame] | 1710 | } else { |
| 1711 | struct isp1760_qtd *qtd; |
Warren Free | 0afb20e | 2009-05-08 10:27:08 +0200 | [diff] [blame] | 1712 | |
Arvid Brodin | fd436ae | 2011-02-26 22:03:49 +0100 | [diff] [blame] | 1713 | list_for_each_entry(qtd, &ints[i].qtd->qtd_list, |
| 1714 | qtd_list) { |
Warren Free | 0afb20e | 2009-05-08 10:27:08 +0200 | [diff] [blame] | 1715 | if (qtd->urb == urb) { |
Arvid Brodin | fd436ae | 2011-02-26 22:03:49 +0100 | [diff] [blame] | 1716 | clean_up_qtdlist(qtd, ints[i].qh); |
Warren Free | 0afb20e | 2009-05-08 10:27:08 +0200 | [diff] [blame] | 1717 | isp1760_urb_done(priv, urb, status); |
Arvid Brodin | fd436ae | 2011-02-26 22:03:49 +0100 | [diff] [blame] | 1718 | qtd = NULL; |
Warren Free | 0afb20e | 2009-05-08 10:27:08 +0200 | [diff] [blame] | 1719 | break; |
| 1720 | } |
Warren Free | 0afb20e | 2009-05-08 10:27:08 +0200 | [diff] [blame] | 1721 | } |
Arvid Brodin | fd436ae | 2011-02-26 22:03:49 +0100 | [diff] [blame] | 1722 | |
| 1723 | /* We found the urb before the last slot */ |
| 1724 | if (!qtd) |
Warren Free | 0afb20e | 2009-05-08 10:27:08 +0200 | [diff] [blame] | 1725 | break; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1726 | } |
| 1727 | ints++; |
| 1728 | } |
| 1729 | |
| 1730 | spin_unlock_irqrestore(&priv->lock, flags); |
| 1731 | return 0; |
| 1732 | } |
| 1733 | |
| 1734 | static irqreturn_t isp1760_irq(struct usb_hcd *usb_hcd) |
| 1735 | { |
| 1736 | struct isp1760_hcd *priv = hcd_to_priv(usb_hcd); |
| 1737 | u32 imask; |
| 1738 | irqreturn_t irqret = IRQ_NONE; |
| 1739 | |
| 1740 | spin_lock(&priv->lock); |
| 1741 | |
| 1742 | if (!(usb_hcd->state & HC_STATE_RUNNING)) |
| 1743 | goto leave; |
| 1744 | |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 1745 | imask = reg_read32(usb_hcd->regs, HC_INTERRUPT_REG); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1746 | if (unlikely(!imask)) |
| 1747 | goto leave; |
| 1748 | |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 1749 | reg_write32(usb_hcd->regs, HC_INTERRUPT_REG, imask); |
Sebastian Andrzej Siewior | b14e840 | 2011-02-08 21:07:40 +0100 | [diff] [blame] | 1750 | if (imask & (HC_ATL_INT | HC_SOT_INT)) |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1751 | do_atl_int(usb_hcd); |
| 1752 | |
| 1753 | if (imask & HC_INTL_INT) |
| 1754 | do_intl_int(usb_hcd); |
| 1755 | |
| 1756 | irqret = IRQ_HANDLED; |
| 1757 | leave: |
| 1758 | spin_unlock(&priv->lock); |
| 1759 | return irqret; |
| 1760 | } |
| 1761 | |
| 1762 | static int isp1760_hub_status_data(struct usb_hcd *hcd, char *buf) |
| 1763 | { |
| 1764 | struct isp1760_hcd *priv = hcd_to_priv(hcd); |
| 1765 | u32 temp, status = 0; |
| 1766 | u32 mask; |
| 1767 | int retval = 1; |
| 1768 | unsigned long flags; |
| 1769 | |
| 1770 | /* if !USB_SUSPEND, root hub timers won't get shut down ... */ |
| 1771 | if (!HC_IS_RUNNING(hcd->state)) |
| 1772 | return 0; |
| 1773 | |
| 1774 | /* init status to no-changes */ |
| 1775 | buf[0] = 0; |
| 1776 | mask = PORT_CSC; |
| 1777 | |
| 1778 | spin_lock_irqsave(&priv->lock, flags); |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 1779 | temp = reg_read32(hcd->regs, HC_PORTSC1); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1780 | |
| 1781 | if (temp & PORT_OWNER) { |
| 1782 | if (temp & PORT_CSC) { |
| 1783 | temp &= ~PORT_CSC; |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 1784 | reg_write32(hcd->regs, HC_PORTSC1, temp); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1785 | goto done; |
| 1786 | } |
| 1787 | } |
| 1788 | |
| 1789 | /* |
| 1790 | * Return status information even for ports with OWNER set. |
| 1791 | * Otherwise khubd wouldn't see the disconnect event when a |
| 1792 | * high-speed device is switched over to the companion |
| 1793 | * controller by the user. |
| 1794 | */ |
| 1795 | |
| 1796 | if ((temp & mask) != 0 |
| 1797 | || ((temp & PORT_RESUME) != 0 |
| 1798 | && time_after_eq(jiffies, |
| 1799 | priv->reset_done))) { |
| 1800 | buf [0] |= 1 << (0 + 1); |
| 1801 | status = STS_PCD; |
| 1802 | } |
| 1803 | /* FIXME autosuspend idle root hubs */ |
| 1804 | done: |
| 1805 | spin_unlock_irqrestore(&priv->lock, flags); |
| 1806 | return status ? retval : 0; |
| 1807 | } |
| 1808 | |
| 1809 | static void isp1760_hub_descriptor(struct isp1760_hcd *priv, |
| 1810 | struct usb_hub_descriptor *desc) |
| 1811 | { |
| 1812 | int ports = HCS_N_PORTS(priv->hcs_params); |
| 1813 | u16 temp; |
| 1814 | |
| 1815 | desc->bDescriptorType = 0x29; |
| 1816 | /* priv 1.0, 2.3.9 says 20ms max */ |
| 1817 | desc->bPwrOn2PwrGood = 10; |
| 1818 | desc->bHubContrCurrent = 0; |
| 1819 | |
| 1820 | desc->bNbrPorts = ports; |
| 1821 | temp = 1 + (ports / 8); |
| 1822 | desc->bDescLength = 7 + 2 * temp; |
| 1823 | |
| 1824 | /* two bitmaps: ports removable, and usb 1.0 legacy PortPwrCtrlMask */ |
| 1825 | memset(&desc->bitmap[0], 0, temp); |
| 1826 | memset(&desc->bitmap[temp], 0xff, temp); |
| 1827 | |
| 1828 | /* per-port overcurrent reporting */ |
| 1829 | temp = 0x0008; |
| 1830 | if (HCS_PPC(priv->hcs_params)) |
| 1831 | /* per-port power control */ |
| 1832 | temp |= 0x0001; |
| 1833 | else |
| 1834 | /* no power switching */ |
| 1835 | temp |= 0x0002; |
| 1836 | desc->wHubCharacteristics = cpu_to_le16(temp); |
| 1837 | } |
| 1838 | |
| 1839 | #define PORT_WAKE_BITS (PORT_WKOC_E|PORT_WKDISC_E|PORT_WKCONN_E) |
| 1840 | |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 1841 | static int check_reset_complete(struct usb_hcd *hcd, int index, |
| 1842 | int port_status) |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1843 | { |
| 1844 | if (!(port_status & PORT_CONNECT)) |
| 1845 | return port_status; |
| 1846 | |
| 1847 | /* if reset finished and it's still not enabled -- handoff */ |
| 1848 | if (!(port_status & PORT_PE)) { |
| 1849 | |
| 1850 | printk(KERN_ERR "port %d full speed --> companion\n", |
| 1851 | index + 1); |
| 1852 | |
| 1853 | port_status |= PORT_OWNER; |
| 1854 | port_status &= ~PORT_RWC_BITS; |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 1855 | reg_write32(hcd->regs, HC_PORTSC1, port_status); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1856 | |
| 1857 | } else |
| 1858 | printk(KERN_ERR "port %d high speed\n", index + 1); |
| 1859 | |
| 1860 | return port_status; |
| 1861 | } |
| 1862 | |
| 1863 | static int isp1760_hub_control(struct usb_hcd *hcd, u16 typeReq, |
| 1864 | u16 wValue, u16 wIndex, char *buf, u16 wLength) |
| 1865 | { |
| 1866 | struct isp1760_hcd *priv = hcd_to_priv(hcd); |
| 1867 | int ports = HCS_N_PORTS(priv->hcs_params); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1868 | u32 temp, status; |
| 1869 | unsigned long flags; |
| 1870 | int retval = 0; |
| 1871 | unsigned selector; |
| 1872 | |
| 1873 | /* |
| 1874 | * FIXME: support SetPortFeatures USB_PORT_FEAT_INDICATOR. |
| 1875 | * HCS_INDICATOR may say we can change LEDs to off/amber/green. |
| 1876 | * (track current state ourselves) ... blink for diagnostics, |
| 1877 | * power, "this is the one", etc. EHCI spec supports this. |
| 1878 | */ |
| 1879 | |
| 1880 | spin_lock_irqsave(&priv->lock, flags); |
| 1881 | switch (typeReq) { |
| 1882 | case ClearHubFeature: |
| 1883 | switch (wValue) { |
| 1884 | case C_HUB_LOCAL_POWER: |
| 1885 | case C_HUB_OVER_CURRENT: |
| 1886 | /* no hub-wide feature/status flags */ |
| 1887 | break; |
| 1888 | default: |
| 1889 | goto error; |
| 1890 | } |
| 1891 | break; |
| 1892 | case ClearPortFeature: |
| 1893 | if (!wIndex || wIndex > ports) |
| 1894 | goto error; |
| 1895 | wIndex--; |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 1896 | temp = reg_read32(hcd->regs, HC_PORTSC1); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1897 | |
| 1898 | /* |
| 1899 | * Even if OWNER is set, so the port is owned by the |
| 1900 | * companion controller, khubd needs to be able to clear |
| 1901 | * the port-change status bits (especially |
Alan Stern | 749da5f | 2010-03-04 17:05:08 -0500 | [diff] [blame] | 1902 | * USB_PORT_STAT_C_CONNECTION). |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1903 | */ |
| 1904 | |
| 1905 | switch (wValue) { |
| 1906 | case USB_PORT_FEAT_ENABLE: |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 1907 | reg_write32(hcd->regs, HC_PORTSC1, temp & ~PORT_PE); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1908 | break; |
| 1909 | case USB_PORT_FEAT_C_ENABLE: |
| 1910 | /* XXX error? */ |
| 1911 | break; |
| 1912 | case USB_PORT_FEAT_SUSPEND: |
| 1913 | if (temp & PORT_RESET) |
| 1914 | goto error; |
| 1915 | |
| 1916 | if (temp & PORT_SUSPEND) { |
| 1917 | if ((temp & PORT_PE) == 0) |
| 1918 | goto error; |
| 1919 | /* resume signaling for 20 msec */ |
| 1920 | temp &= ~(PORT_RWC_BITS); |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 1921 | reg_write32(hcd->regs, HC_PORTSC1, |
| 1922 | temp | PORT_RESUME); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1923 | priv->reset_done = jiffies + |
| 1924 | msecs_to_jiffies(20); |
| 1925 | } |
| 1926 | break; |
| 1927 | case USB_PORT_FEAT_C_SUSPEND: |
| 1928 | /* we auto-clear this feature */ |
| 1929 | break; |
| 1930 | case USB_PORT_FEAT_POWER: |
| 1931 | if (HCS_PPC(priv->hcs_params)) |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 1932 | reg_write32(hcd->regs, HC_PORTSC1, |
| 1933 | temp & ~PORT_POWER); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1934 | break; |
| 1935 | case USB_PORT_FEAT_C_CONNECTION: |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 1936 | reg_write32(hcd->regs, HC_PORTSC1, temp | PORT_CSC); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1937 | break; |
| 1938 | case USB_PORT_FEAT_C_OVER_CURRENT: |
| 1939 | /* XXX error ?*/ |
| 1940 | break; |
| 1941 | case USB_PORT_FEAT_C_RESET: |
| 1942 | /* GetPortStatus clears reset */ |
| 1943 | break; |
| 1944 | default: |
| 1945 | goto error; |
| 1946 | } |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 1947 | reg_read32(hcd->regs, HC_USBCMD); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1948 | break; |
| 1949 | case GetHubDescriptor: |
| 1950 | isp1760_hub_descriptor(priv, (struct usb_hub_descriptor *) |
| 1951 | buf); |
| 1952 | break; |
| 1953 | case GetHubStatus: |
| 1954 | /* no hub-wide feature/status flags */ |
| 1955 | memset(buf, 0, 4); |
| 1956 | break; |
| 1957 | case GetPortStatus: |
| 1958 | if (!wIndex || wIndex > ports) |
| 1959 | goto error; |
| 1960 | wIndex--; |
| 1961 | status = 0; |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 1962 | temp = reg_read32(hcd->regs, HC_PORTSC1); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1963 | |
| 1964 | /* wPortChange bits */ |
| 1965 | if (temp & PORT_CSC) |
Alan Stern | 749da5f | 2010-03-04 17:05:08 -0500 | [diff] [blame] | 1966 | status |= USB_PORT_STAT_C_CONNECTION << 16; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1967 | |
| 1968 | |
| 1969 | /* whoever resumes must GetPortStatus to complete it!! */ |
| 1970 | if (temp & PORT_RESUME) { |
| 1971 | printk(KERN_ERR "Port resume should be skipped.\n"); |
| 1972 | |
| 1973 | /* Remote Wakeup received? */ |
| 1974 | if (!priv->reset_done) { |
| 1975 | /* resume signaling for 20 msec */ |
| 1976 | priv->reset_done = jiffies |
| 1977 | + msecs_to_jiffies(20); |
| 1978 | /* check the port again */ |
| 1979 | mod_timer(&priv_to_hcd(priv)->rh_timer, |
| 1980 | priv->reset_done); |
| 1981 | } |
| 1982 | |
| 1983 | /* resume completed? */ |
| 1984 | else if (time_after_eq(jiffies, |
| 1985 | priv->reset_done)) { |
Alan Stern | 749da5f | 2010-03-04 17:05:08 -0500 | [diff] [blame] | 1986 | status |= USB_PORT_STAT_C_SUSPEND << 16; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1987 | priv->reset_done = 0; |
| 1988 | |
| 1989 | /* stop resume signaling */ |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 1990 | temp = reg_read32(hcd->regs, HC_PORTSC1); |
| 1991 | reg_write32(hcd->regs, HC_PORTSC1, |
| 1992 | temp & ~(PORT_RWC_BITS | PORT_RESUME)); |
| 1993 | retval = handshake(hcd, HC_PORTSC1, |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 1994 | PORT_RESUME, 0, 2000 /* 2msec */); |
| 1995 | if (retval != 0) { |
| 1996 | isp1760_err(priv, |
| 1997 | "port %d resume error %d\n", |
| 1998 | wIndex + 1, retval); |
| 1999 | goto error; |
| 2000 | } |
| 2001 | temp &= ~(PORT_SUSPEND|PORT_RESUME|(3<<10)); |
| 2002 | } |
| 2003 | } |
| 2004 | |
| 2005 | /* whoever resets must GetPortStatus to complete it!! */ |
| 2006 | if ((temp & PORT_RESET) |
| 2007 | && time_after_eq(jiffies, |
| 2008 | priv->reset_done)) { |
Alan Stern | 749da5f | 2010-03-04 17:05:08 -0500 | [diff] [blame] | 2009 | status |= USB_PORT_STAT_C_RESET << 16; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 2010 | priv->reset_done = 0; |
| 2011 | |
| 2012 | /* force reset to complete */ |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 2013 | reg_write32(hcd->regs, HC_PORTSC1, temp & ~PORT_RESET); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 2014 | /* REVISIT: some hardware needs 550+ usec to clear |
| 2015 | * this bit; seems too long to spin routinely... |
| 2016 | */ |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 2017 | retval = handshake(hcd, HC_PORTSC1, |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 2018 | PORT_RESET, 0, 750); |
| 2019 | if (retval != 0) { |
| 2020 | isp1760_err(priv, "port %d reset error %d\n", |
| 2021 | wIndex + 1, retval); |
| 2022 | goto error; |
| 2023 | } |
| 2024 | |
| 2025 | /* see what we found out */ |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 2026 | temp = check_reset_complete(hcd, wIndex, |
| 2027 | reg_read32(hcd->regs, HC_PORTSC1)); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 2028 | } |
| 2029 | /* |
| 2030 | * Even if OWNER is set, there's no harm letting khubd |
| 2031 | * see the wPortStatus values (they should all be 0 except |
| 2032 | * for PORT_POWER anyway). |
| 2033 | */ |
| 2034 | |
| 2035 | if (temp & PORT_OWNER) |
| 2036 | printk(KERN_ERR "Warning: PORT_OWNER is set\n"); |
| 2037 | |
| 2038 | if (temp & PORT_CONNECT) { |
Alan Stern | 749da5f | 2010-03-04 17:05:08 -0500 | [diff] [blame] | 2039 | status |= USB_PORT_STAT_CONNECTION; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 2040 | /* status may be from integrated TT */ |
| 2041 | status |= ehci_port_speed(priv, temp); |
| 2042 | } |
| 2043 | if (temp & PORT_PE) |
Alan Stern | 749da5f | 2010-03-04 17:05:08 -0500 | [diff] [blame] | 2044 | status |= USB_PORT_STAT_ENABLE; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 2045 | if (temp & (PORT_SUSPEND|PORT_RESUME)) |
Alan Stern | 749da5f | 2010-03-04 17:05:08 -0500 | [diff] [blame] | 2046 | status |= USB_PORT_STAT_SUSPEND; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 2047 | if (temp & PORT_RESET) |
Alan Stern | 749da5f | 2010-03-04 17:05:08 -0500 | [diff] [blame] | 2048 | status |= USB_PORT_STAT_RESET; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 2049 | if (temp & PORT_POWER) |
Alan Stern | 749da5f | 2010-03-04 17:05:08 -0500 | [diff] [blame] | 2050 | status |= USB_PORT_STAT_POWER; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 2051 | |
| 2052 | put_unaligned(cpu_to_le32(status), (__le32 *) buf); |
| 2053 | break; |
| 2054 | case SetHubFeature: |
| 2055 | switch (wValue) { |
| 2056 | case C_HUB_LOCAL_POWER: |
| 2057 | case C_HUB_OVER_CURRENT: |
| 2058 | /* no hub-wide feature/status flags */ |
| 2059 | break; |
| 2060 | default: |
| 2061 | goto error; |
| 2062 | } |
| 2063 | break; |
| 2064 | case SetPortFeature: |
| 2065 | selector = wIndex >> 8; |
| 2066 | wIndex &= 0xff; |
| 2067 | if (!wIndex || wIndex > ports) |
| 2068 | goto error; |
| 2069 | wIndex--; |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 2070 | temp = reg_read32(hcd->regs, HC_PORTSC1); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 2071 | if (temp & PORT_OWNER) |
| 2072 | break; |
| 2073 | |
| 2074 | /* temp &= ~PORT_RWC_BITS; */ |
| 2075 | switch (wValue) { |
| 2076 | case USB_PORT_FEAT_ENABLE: |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 2077 | reg_write32(hcd->regs, HC_PORTSC1, temp | PORT_PE); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 2078 | break; |
| 2079 | |
| 2080 | case USB_PORT_FEAT_SUSPEND: |
| 2081 | if ((temp & PORT_PE) == 0 |
| 2082 | || (temp & PORT_RESET) != 0) |
| 2083 | goto error; |
| 2084 | |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 2085 | reg_write32(hcd->regs, HC_PORTSC1, temp | PORT_SUSPEND); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 2086 | break; |
| 2087 | case USB_PORT_FEAT_POWER: |
| 2088 | if (HCS_PPC(priv->hcs_params)) |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 2089 | reg_write32(hcd->regs, HC_PORTSC1, |
| 2090 | temp | PORT_POWER); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 2091 | break; |
| 2092 | case USB_PORT_FEAT_RESET: |
| 2093 | if (temp & PORT_RESUME) |
| 2094 | goto error; |
| 2095 | /* line status bits may report this as low speed, |
| 2096 | * which can be fine if this root hub has a |
| 2097 | * transaction translator built in. |
| 2098 | */ |
| 2099 | if ((temp & (PORT_PE|PORT_CONNECT)) == PORT_CONNECT |
| 2100 | && PORT_USB11(temp)) { |
| 2101 | temp |= PORT_OWNER; |
| 2102 | } else { |
| 2103 | temp |= PORT_RESET; |
| 2104 | temp &= ~PORT_PE; |
| 2105 | |
| 2106 | /* |
| 2107 | * caller must wait, then call GetPortStatus |
| 2108 | * usb 2.0 spec says 50 ms resets on root |
| 2109 | */ |
| 2110 | priv->reset_done = jiffies + |
| 2111 | msecs_to_jiffies(50); |
| 2112 | } |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 2113 | reg_write32(hcd->regs, HC_PORTSC1, temp); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 2114 | break; |
| 2115 | default: |
| 2116 | goto error; |
| 2117 | } |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 2118 | reg_read32(hcd->regs, HC_USBCMD); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 2119 | break; |
| 2120 | |
| 2121 | default: |
| 2122 | error: |
| 2123 | /* "stall" on error */ |
| 2124 | retval = -EPIPE; |
| 2125 | } |
| 2126 | spin_unlock_irqrestore(&priv->lock, flags); |
| 2127 | return retval; |
| 2128 | } |
| 2129 | |
| 2130 | static void isp1760_endpoint_disable(struct usb_hcd *usb_hcd, |
| 2131 | struct usb_host_endpoint *ep) |
| 2132 | { |
| 2133 | struct isp1760_hcd *priv = hcd_to_priv(usb_hcd); |
| 2134 | struct isp1760_qh *qh; |
| 2135 | struct isp1760_qtd *qtd; |
Andrew Morton | d249afd | 2008-06-09 16:39:52 -0700 | [diff] [blame] | 2136 | unsigned long flags; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 2137 | |
| 2138 | spin_lock_irqsave(&priv->lock, flags); |
| 2139 | qh = ep->hcpriv; |
| 2140 | if (!qh) |
| 2141 | goto out; |
| 2142 | |
| 2143 | ep->hcpriv = NULL; |
| 2144 | do { |
| 2145 | /* more than entry might get removed */ |
| 2146 | if (list_empty(&qh->qtd_list)) |
| 2147 | break; |
| 2148 | |
| 2149 | qtd = list_first_entry(&qh->qtd_list, struct isp1760_qtd, |
| 2150 | qtd_list); |
| 2151 | |
| 2152 | if (qtd->status & URB_ENQUEUED) { |
| 2153 | |
| 2154 | spin_unlock_irqrestore(&priv->lock, flags); |
| 2155 | isp1760_urb_dequeue(usb_hcd, qtd->urb, -ECONNRESET); |
| 2156 | spin_lock_irqsave(&priv->lock, flags); |
| 2157 | } else { |
| 2158 | struct urb *urb; |
| 2159 | |
| 2160 | urb = qtd->urb; |
Arvid Brodin | fd436ae | 2011-02-26 22:03:49 +0100 | [diff] [blame] | 2161 | clean_up_qtdlist(qtd, qh); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 2162 | isp1760_urb_done(priv, urb, -ECONNRESET); |
| 2163 | } |
| 2164 | } while (1); |
| 2165 | |
| 2166 | qh_destroy(qh); |
| 2167 | /* remove requests and leak them. |
| 2168 | * ATL are pretty fast done, INT could take a while... |
| 2169 | * The latter shoule be removed |
| 2170 | */ |
| 2171 | out: |
| 2172 | spin_unlock_irqrestore(&priv->lock, flags); |
| 2173 | } |
| 2174 | |
| 2175 | static int isp1760_get_frame(struct usb_hcd *hcd) |
| 2176 | { |
| 2177 | struct isp1760_hcd *priv = hcd_to_priv(hcd); |
| 2178 | u32 fr; |
| 2179 | |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 2180 | fr = reg_read32(hcd->regs, HC_FRINDEX); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 2181 | return (fr >> 3) % priv->periodic_size; |
| 2182 | } |
| 2183 | |
| 2184 | static void isp1760_stop(struct usb_hcd *hcd) |
| 2185 | { |
| 2186 | struct isp1760_hcd *priv = hcd_to_priv(hcd); |
Nate Case | 3faefc8 | 2008-06-17 11:11:38 -0500 | [diff] [blame] | 2187 | u32 temp; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 2188 | |
| 2189 | isp1760_hub_control(hcd, ClearPortFeature, USB_PORT_FEAT_POWER, 1, |
| 2190 | NULL, 0); |
| 2191 | mdelay(20); |
| 2192 | |
| 2193 | spin_lock_irq(&priv->lock); |
| 2194 | ehci_reset(priv); |
| 2195 | /* Disable IRQ */ |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 2196 | temp = reg_read32(hcd->regs, HC_HW_MODE_CTRL); |
| 2197 | 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] | 2198 | spin_unlock_irq(&priv->lock); |
| 2199 | |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 2200 | reg_write32(hcd->regs, HC_CONFIGFLAG, 0); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 2201 | } |
| 2202 | |
| 2203 | static void isp1760_shutdown(struct usb_hcd *hcd) |
| 2204 | { |
Nate Case | 3faefc8 | 2008-06-17 11:11:38 -0500 | [diff] [blame] | 2205 | u32 command, temp; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 2206 | |
| 2207 | isp1760_stop(hcd); |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 2208 | temp = reg_read32(hcd->regs, HC_HW_MODE_CTRL); |
| 2209 | 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] | 2210 | |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 2211 | command = reg_read32(hcd->regs, HC_USBCMD); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 2212 | command &= ~CMD_RUN; |
Arvid Brodin | bedc0c3 | 2011-02-26 22:02:57 +0100 | [diff] [blame] | 2213 | reg_write32(hcd->regs, HC_USBCMD, command); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 2214 | } |
| 2215 | |
| 2216 | static const struct hc_driver isp1760_hc_driver = { |
| 2217 | .description = "isp1760-hcd", |
| 2218 | .product_desc = "NXP ISP1760 USB Host Controller", |
| 2219 | .hcd_priv_size = sizeof(struct isp1760_hcd), |
| 2220 | .irq = isp1760_irq, |
| 2221 | .flags = HCD_MEMORY | HCD_USB2, |
| 2222 | .reset = isp1760_hc_setup, |
| 2223 | .start = isp1760_run, |
| 2224 | .stop = isp1760_stop, |
| 2225 | .shutdown = isp1760_shutdown, |
| 2226 | .urb_enqueue = isp1760_urb_enqueue, |
| 2227 | .urb_dequeue = isp1760_urb_dequeue, |
| 2228 | .endpoint_disable = isp1760_endpoint_disable, |
| 2229 | .get_frame_number = isp1760_get_frame, |
| 2230 | .hub_status_data = isp1760_hub_status_data, |
| 2231 | .hub_control = isp1760_hub_control, |
| 2232 | }; |
| 2233 | |
| 2234 | int __init init_kmem_once(void) |
| 2235 | { |
| 2236 | qtd_cachep = kmem_cache_create("isp1760_qtd", |
| 2237 | sizeof(struct isp1760_qtd), 0, SLAB_TEMPORARY | |
| 2238 | SLAB_MEM_SPREAD, NULL); |
| 2239 | |
| 2240 | if (!qtd_cachep) |
| 2241 | return -ENOMEM; |
| 2242 | |
| 2243 | qh_cachep = kmem_cache_create("isp1760_qh", sizeof(struct isp1760_qh), |
| 2244 | 0, SLAB_TEMPORARY | SLAB_MEM_SPREAD, NULL); |
| 2245 | |
| 2246 | if (!qh_cachep) { |
| 2247 | kmem_cache_destroy(qtd_cachep); |
| 2248 | return -ENOMEM; |
| 2249 | } |
| 2250 | |
| 2251 | return 0; |
| 2252 | } |
| 2253 | |
| 2254 | void deinit_kmem_cache(void) |
| 2255 | { |
| 2256 | kmem_cache_destroy(qtd_cachep); |
| 2257 | kmem_cache_destroy(qh_cachep); |
| 2258 | } |
| 2259 | |
Catalin Marinas | f9031f2 | 2009-02-10 16:55:45 +0000 | [diff] [blame] | 2260 | struct usb_hcd *isp1760_register(phys_addr_t res_start, resource_size_t res_len, |
| 2261 | int irq, unsigned long irqflags, |
| 2262 | struct device *dev, const char *busname, |
| 2263 | unsigned int devflags) |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 2264 | { |
| 2265 | struct usb_hcd *hcd; |
| 2266 | struct isp1760_hcd *priv; |
| 2267 | int ret; |
| 2268 | |
| 2269 | if (usb_disabled()) |
| 2270 | return ERR_PTR(-ENODEV); |
| 2271 | |
| 2272 | /* prevent usb-core allocating DMA pages */ |
| 2273 | dev->dma_mask = NULL; |
| 2274 | |
Kay Sievers | 0031a06 | 2008-05-02 06:02:41 +0200 | [diff] [blame] | 2275 | hcd = usb_create_hcd(&isp1760_hc_driver, dev, dev_name(dev)); |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 2276 | if (!hcd) |
| 2277 | return ERR_PTR(-ENOMEM); |
| 2278 | |
| 2279 | priv = hcd_to_priv(hcd); |
Nate Case | 3faefc8 | 2008-06-17 11:11:38 -0500 | [diff] [blame] | 2280 | priv->devflags = devflags; |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 2281 | init_memory(priv); |
| 2282 | hcd->regs = ioremap(res_start, res_len); |
| 2283 | if (!hcd->regs) { |
| 2284 | ret = -EIO; |
| 2285 | goto err_put; |
| 2286 | } |
| 2287 | |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 2288 | hcd->irq = irq; |
| 2289 | hcd->rsrc_start = res_start; |
| 2290 | hcd->rsrc_len = res_len; |
| 2291 | |
Nate Case | e6942d6 | 2008-05-21 16:28:20 -0500 | [diff] [blame] | 2292 | ret = usb_add_hcd(hcd, irq, irqflags); |
| 2293 | if (ret) |
| 2294 | goto err_unmap; |
| 2295 | |
Sebastian Siewior | db11e47 | 2008-04-24 00:37:04 +0200 | [diff] [blame] | 2296 | return hcd; |
| 2297 | |
| 2298 | err_unmap: |
| 2299 | iounmap(hcd->regs); |
| 2300 | |
| 2301 | err_put: |
| 2302 | usb_put_hcd(hcd); |
| 2303 | |
| 2304 | return ERR_PTR(ret); |
| 2305 | } |
| 2306 | |
| 2307 | MODULE_DESCRIPTION("Driver for the ISP1760 USB-controller from NXP"); |
| 2308 | MODULE_AUTHOR("Sebastian Siewior <bigeasy@linuxtronix.de>"); |
| 2309 | MODULE_LICENSE("GPL v2"); |