Changes in uspace/drv/bus/usb/ehci/res.c [615abda:99e8fb7b] in mainline
- File:
-
- 1 edited
-
uspace/drv/bus/usb/ehci/res.c (modified) (11 diffs)
Legend:
- Unmodified
- Added
- Removed
-
uspace/drv/bus/usb/ehci/res.c
r615abda r99e8fb7b 46 46 47 47 #include "res.h" 48 #include "ehci_regs.h" 48 49 #define HCC_PARAMS_OFFSET 0x8 50 #define HCC_PARAMS_EECP_MASK 0xff 51 #define HCC_PARAMS_EECP_OFFSET 8 52 53 #define CMD_OFFSET 0x0 54 #define STS_OFFSET 0x4 55 #define INT_OFFSET 0x8 56 #define CFG_OFFSET 0x40 57 58 #define USBCMD_RUN 1 59 #define USBSTS_HALTED (1 << 12) 49 60 50 61 #define USBLEGSUP_OFFSET 0 … … 56 67 #define WAIT_STEP 10 57 68 69 70 /** Get address of registers and IRQ for given device. 71 * 72 * @param[in] dev Device asking for the addresses. 73 * @param[out] mem_regs_p Pointer to the register range. 74 * @param[out] irq_no IRQ assigned to the device. 75 * @return Error code. 76 */ 77 int get_my_registers(ddf_dev_t *dev, 78 addr_range_t *mem_regs_p, int *irq_no) 79 { 80 assert(dev); 81 82 async_sess_t *parent_sess = devman_parent_device_connect( 83 EXCHANGE_SERIALIZE, ddf_dev_get_handle(dev), IPC_FLAG_BLOCKING); 84 if (!parent_sess) 85 return ENOMEM; 86 87 hw_res_list_parsed_t hw_res; 88 hw_res_list_parsed_init(&hw_res); 89 const int ret = hw_res_get_list_parsed(parent_sess, &hw_res, 0); 90 async_hangup(parent_sess); 91 if (ret != EOK) { 92 return ret; 93 } 94 95 if (hw_res.irqs.count != 1 || hw_res.mem_ranges.count != 1) { 96 hw_res_list_parsed_clean(&hw_res); 97 return ENOENT; 98 } 99 100 if (mem_regs_p) 101 *mem_regs_p = hw_res.mem_ranges.ranges[0]; 102 if (irq_no) 103 *irq_no = hw_res.irqs.irqs[0]; 104 105 hw_res_list_parsed_clean(&hw_res); 106 return EOK; 107 } 108 109 /** Calls the PCI driver with a request to enable interrupts 110 * 111 * @param[in] device Device asking for interrupts 112 * @return Error code. 113 */ 114 int enable_interrupts(ddf_dev_t *device) 115 { 116 async_sess_t *parent_sess = devman_parent_device_connect( 117 EXCHANGE_SERIALIZE, ddf_dev_get_handle(device), IPC_FLAG_BLOCKING); 118 if (!parent_sess) 119 return ENOMEM; 120 121 const bool enabled = hw_res_enable_interrupt(parent_sess); 122 async_hangup(parent_sess); 123 124 return enabled ? EOK : EIO; 125 } 126 58 127 /** Implements BIOS hands-off routine as described in EHCI spec 59 128 * … … 62 131 * @return Error code. 63 132 */ 64 static int disable_extended_caps( async_sess_t *parent_sess, unsigned eecp)133 static int disable_extended_caps(ddf_dev_t *device, unsigned eecp) 65 134 { 66 135 /* nothing to do */ … … 68 137 return EOK; 69 138 139 async_sess_t *parent_sess = devman_parent_device_connect( 140 EXCHANGE_SERIALIZE, ddf_dev_get_handle(device), IPC_FLAG_BLOCKING); 141 if (!parent_sess) 142 return ENOMEM; 143 70 144 /* Read the first EEC. i.e. Legacy Support register */ 71 145 uint32_t usblegsup; 72 int r et= pci_config_space_read_32(parent_sess,146 int rc = pci_config_space_read_32(parent_sess, 73 147 eecp + USBLEGSUP_OFFSET, &usblegsup); 74 if (ret != EOK) { 75 usb_log_error("Failed to read USBLEGSUP: %s.\n", str_error(ret)); 76 return ret; 77 } 148 if (rc != EOK) { 149 usb_log_error("Failed to read USBLEGSUP: %s.\n", 150 str_error(rc)); 151 goto error; 152 } 153 78 154 usb_log_debug("USBLEGSUP: %" PRIx32 ".\n", usblegsup); 79 155 … … 81 157 * byte. (OS Control semaphore)*/ 82 158 usb_log_debug("Requesting OS control.\n"); 83 r et= pci_config_space_write_8(parent_sess,159 rc = pci_config_space_write_8(parent_sess, 84 160 eecp + USBLEGSUP_OFFSET + 3, 1); 85 if (r et!= EOK) {161 if (rc != EOK) { 86 162 usb_log_error("Failed to request OS EHCI control: %s.\n", 87 str_error(r et));88 return ret;163 str_error(rc)); 164 goto error; 89 165 } 90 166 91 167 size_t wait = 0; 92 168 /* Wait for BIOS to release control. */ 93 r et= pci_config_space_read_32(169 rc = pci_config_space_read_32( 94 170 parent_sess, eecp + USBLEGSUP_OFFSET, &usblegsup); 95 while ((ret == EOK) && (wait < DEFAULT_WAIT) 96 && (usblegsup & USBLEGSUP_BIOS_CONTROL)) { 171 if (rc != EOK) { 172 usb_log_error("Failed reading PCI config space: %s.\n", 173 str_error(rc)); 174 goto error; 175 } 176 177 while ((wait < DEFAULT_WAIT) && (usblegsup & USBLEGSUP_BIOS_CONTROL)) { 97 178 async_usleep(WAIT_STEP); 98 r et= pci_config_space_read_32(parent_sess,179 rc = pci_config_space_read_32(parent_sess, 99 180 eecp + USBLEGSUP_OFFSET, &usblegsup); 181 if (rc != EOK) { 182 usb_log_error("Failed reading PCI config space: %s.\n", 183 str_error(rc)); 184 goto error; 185 } 100 186 wait += WAIT_STEP; 101 187 } … … 103 189 if ((usblegsup & USBLEGSUP_BIOS_CONTROL) == 0) { 104 190 usb_log_info("BIOS released control after %zu usec.\n", wait); 191 async_hangup(parent_sess); 105 192 return EOK; 106 193 } … … 109 196 usb_log_warning( "BIOS failed to release control after " 110 197 "%zu usecs, force it.\n", wait); 111 r et= pci_config_space_write_32(parent_sess,198 rc = pci_config_space_write_32(parent_sess, 112 199 eecp + USBLEGSUP_OFFSET, USBLEGSUP_OS_CONTROL); 113 if (r et!= EOK) {114 usb_log_error("Failed to force OS control: %s.\n",115 str_error(ret));116 return ret;200 if (rc != EOK) { 201 usb_log_error("Failed to force OS control: " 202 "%s.\n", str_error(rc)); 203 goto error; 117 204 } 118 205 … … 126 213 /* Read the second EEC Legacy Support and Control register */ 127 214 uint32_t usblegctlsts; 128 r et= pci_config_space_read_32(parent_sess,215 rc = pci_config_space_read_32(parent_sess, 129 216 eecp + USBLEGCTLSTS_OFFSET, &usblegctlsts); 130 if (r et!= EOK) {217 if (rc != EOK) { 131 218 usb_log_error("Failed to get USBLEGCTLSTS: %s.\n", 132 str_error(r et));133 return ret;219 str_error(rc)); 220 goto error; 134 221 } 222 135 223 usb_log_debug("USBLEGCTLSTS: %" PRIx32 ".\n", usblegctlsts); 136 224 /* … … 139 227 * interfering. NOTE: Three upper bits are WC 140 228 */ 141 r et= pci_config_space_write_32(parent_sess,229 rc = pci_config_space_write_32(parent_sess, 142 230 eecp + USBLEGCTLSTS_OFFSET, 0xe0000000); 143 if (ret != EOK) { 144 usb_log_error("Failed to zero USBLEGCTLSTS: %s\n", 145 str_error(ret)); 146 return ret; 231 if (rc != EOK) { 232 usb_log_error("Failed(%d) zero USBLEGCTLSTS.\n", rc); 233 goto error; 147 234 } 148 235 149 236 udelay(10); 150 /* read again to amke sure it's zeroed */ 151 ret = pci_config_space_read_32(parent_sess, 237 rc = pci_config_space_read_32(parent_sess, 152 238 eecp + USBLEGCTLSTS_OFFSET, &usblegctlsts); 153 if (r et!= EOK) {239 if (rc != EOK) { 154 240 usb_log_error("Failed to get USBLEGCTLSTS 2: %s.\n", 155 str_error(r et));156 return ret;241 str_error(rc)); 242 goto error; 157 243 } 244 158 245 usb_log_debug("Zeroed USBLEGCTLSTS: %" PRIx32 ".\n", 159 246 usblegctlsts); … … 161 248 162 249 /* Read again Legacy Support register */ 163 r et= pci_config_space_read_32(parent_sess,250 rc = pci_config_space_read_32(parent_sess, 164 251 eecp + USBLEGSUP_OFFSET, &usblegsup); 165 if (r et!= EOK) {252 if (rc != EOK) { 166 253 usb_log_error("Failed to read USBLEGSUP: %s.\n", 167 str_error(ret)); 168 return ret; 169 } 254 str_error(rc)); 255 goto error; 256 } 257 170 258 usb_log_debug("USBLEGSUP: %" PRIx32 ".\n", usblegsup); 171 return ret; 259 async_hangup(parent_sess); 260 return EOK; 261 error: 262 async_hangup(parent_sess); 263 return rc; 172 264 } 173 265 174 int disable_legacy(ddf_dev_t *device )266 int disable_legacy(ddf_dev_t *device, addr_range_t *reg_range) 175 267 { 176 268 assert(device); 177 178 async_sess_t *parent_sess = devman_parent_device_connect(179 EXCHANGE_SERIALIZE, ddf_dev_get_handle(device), IPC_FLAG_BLOCKING);180 if (!parent_sess)181 return ENOMEM;182 183 269 usb_log_debug("Disabling EHCI legacy support.\n"); 184 185 hw_res_list_parsed_t res;186 hw_res_list_parsed_init(&res);187 int ret = hw_res_get_list_parsed(parent_sess, &res, 0);188 if (ret != EOK) {189 usb_log_error("Failed to get resource list: %s\n",190 str_error(ret));191 goto clean;192 }193 194 if (res.mem_ranges.count < 1) {195 usb_log_error("Incorrect mem range count: %zu",196 res.mem_ranges.count);197 ret = EINVAL;198 goto clean;199 }200 270 201 271 /* Map EHCI registers */ 202 272 void *regs = NULL; 203 ret = pio_enable_range(&res.mem_ranges.ranges[0], ®s);204 if (r et!= EOK) {273 int rc = pio_enable_range(reg_range, ®s); 274 if (rc != EOK) { 205 275 usb_log_error("Failed to map registers %p: %s.\n", 206 RNGABSPTR( res.mem_ranges.ranges[0]), str_error(ret));207 goto clean;276 RNGABSPTR(*reg_range), str_error(rc)); 277 return rc; 208 278 } 209 279 210 280 usb_log_debug2("Registers mapped at: %p.\n", regs); 211 281 212 ehci_caps_regs_t *ehci_caps = regs; 213 214 const uint32_t hcc_params = EHCI_RD(ehci_caps->hccparams); 282 const uint32_t hcc_params = 283 *(uint32_t*)(regs + HCC_PARAMS_OFFSET); 215 284 usb_log_debug("Value of hcc params register: %x.\n", hcc_params); 216 285 … … 218 287 * position of EEC registers (points to PCI config space) */ 219 288 const uint32_t eecp = 220 (hcc_params >> EHCI_CAPS_HCC_EECP_SHIFT) & EHCI_CAPS_HCC_EECP_MASK;289 (hcc_params >> HCC_PARAMS_EECP_OFFSET) & HCC_PARAMS_EECP_MASK; 221 290 usb_log_debug("Value of EECP: %x.\n", eecp); 222 291 223 r et = disable_extended_caps(parent_sess, eecp);224 if (r et!= EOK) {292 rc = disable_extended_caps(device, eecp); 293 if (rc != EOK) { 225 294 usb_log_error("Failed to disable extended capabilities: %s.\n", 226 str_error(ret)); 227 goto clean; 228 } 229 clean: 230 //TODO unmap registers 231 hw_res_list_parsed_clean(&res); 232 async_hangup(parent_sess); 233 return ret; 295 str_error(rc)); 296 return rc; 297 } 298 299 /* 300 * TURN OFF EHCI FOR NOW, DRIVER WILL REINITIALIZE IT IF NEEDED 301 */ 302 303 /* Get size of capability registers in memory space. */ 304 const unsigned operation_offset = *(uint8_t*)regs; 305 usb_log_debug("USBCMD offset: %d.\n", operation_offset); 306 307 /* Zero USBCMD register. */ 308 volatile uint32_t *usbcmd = 309 (uint32_t*)((uint8_t*)regs + operation_offset + CMD_OFFSET); 310 volatile uint32_t *usbsts = 311 (uint32_t*)((uint8_t*)regs + operation_offset + STS_OFFSET); 312 volatile uint32_t *usbconf = 313 (uint32_t*)((uint8_t*)regs + operation_offset + CFG_OFFSET); 314 volatile uint32_t *usbint = 315 (uint32_t*)((uint8_t*)regs + operation_offset + INT_OFFSET); 316 usb_log_debug("USBCMD value: %x.\n", *usbcmd); 317 if (*usbcmd & USBCMD_RUN) { 318 *usbsts = 0x3f; /* ack all interrupts */ 319 *usbint = 0; /* disable all interrupts */ 320 *usbconf = 0; /* release control of RH ports */ 321 322 *usbcmd = 0; 323 /* Wait until hc is halted */ 324 while ((*usbsts & USBSTS_HALTED) == 0); 325 usb_log_info("EHCI turned off.\n"); 326 } else { 327 usb_log_info("EHCI was not running.\n"); 328 } 329 usb_log_debug("Registers: \n" 330 "\t USBCMD(%p): %x(0x00080000 = at least 1ms between interrupts)\n" 331 "\t USBSTS(%p): %x(0x00001000 = HC halted)\n" 332 "\t USBINT(%p): %x(0x0 = no interrupts).\n" 333 "\t CONFIG(%p): %x(0x0 = ports controlled by companion hc).\n", 334 usbcmd, *usbcmd, usbsts, *usbsts, usbint, *usbint, usbconf,*usbconf); 335 336 return rc; 234 337 } 235 338
Note:
See TracChangeset
for help on using the changeset viewer.
