4 * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
11 * * Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * * Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in
15 * the documentation and/or other materials provided with the
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
36 #include <sys/param.h>
37 #include <sys/systm.h>
38 #include <sys/kernel.h>
41 #include <sys/mutex.h>
42 #include <sys/types.h>
43 #include <sys/malloc.h>
46 #include <machine/bus.h>
47 #include <machine/resource.h>
50 #include <cam/cam_ccb.h>
51 #include <cam/cam_sim.h>
52 #include <cam/cam_xpt_sim.h>
54 #include <dev/isci/environment.h>
55 #include <dev/isci/scil/intel_pci.h>
57 #include <dev/isci/scil/sci_types.h>
58 #include <dev/isci/scil/sci_object.h>
59 #include <dev/isci/scil/sci_status.h>
60 #include <dev/isci/scil/sci_pool.h>
61 #include <dev/isci/scil/sci_fast_list.h>
63 #include <dev/isci/scil/sci_controller_constants.h>
65 #include <dev/isci/scil/scic_controller.h>
66 #include <dev/isci/scil/scic_config_parameters.h>
68 #define DEVICE2SOFTC(dev) ((struct isci_softc *) device_get_softc(dev))
70 #define DEVICE_TIMEOUT 1000
71 #define SCI_MAX_TIMERS 32
73 #define ISCI_NUM_PCI_BARS 2
74 #define ISCI_MAX_LUN 8
76 MALLOC_DECLARE(M_ISCI);
79 struct callout callout;
80 SCI_TIMER_CALLBACK_T callback;
85 struct ISCI_REMOTE_DEVICE {
87 struct ISCI_DOMAIN *domain;
88 SCI_REMOTE_DEVICE_HANDLE_T sci_object;
90 uint32_t frozen_lun_mask;
91 SCI_FAST_LIST_ELEMENT_T pending_device_reset_element;
94 * This queue maintains CCBs that have been returned with
95 * SCI_IO_FAILURE_INVALID_STATE from the SCI layer. These CCBs
96 * need to be retried, but we cannot return CAM_REQUEUE_REQ because
97 * this status gets passed all the way back up to users of the pass(4)
98 * interface and breaks things like smartctl. So instead, we queue
99 * these CCBs internally.
101 TAILQ_HEAD(,ccb_hdr) queued_ccbs;
104 * Marker denoting this remote device needs its first queued ccb to
107 BOOL release_queued_ccb;
110 * Points to a CCB in the queue that is currently being processed by
111 * SCIL. This allows us to keep in flight CCBs in the queue so as to
112 * maintain ordering (i.e. in case we retry an I/O and then find out
113 * it needs to be retried again - it just keeps its same place in the
116 union ccb * queued_ccb_in_progress;
120 struct ISCI_CONTROLLER *controller;
121 SCI_DOMAIN_HANDLE_T sci_object;
123 struct ISCI_REMOTE_DEVICE *da_remote_device;
128 bus_addr_t physical_address;
129 bus_dma_tag_t dma_tag;
130 bus_dmamap_t dma_map;
131 POINTER_UINT virtual_address;
136 struct ISCI_INTERRUPT_INFO
138 SCIC_CONTROLLER_HANDLER_METHODS_T *handlers;
139 void *interrupt_target_handle;
140 struct resource *res;
148 struct cdev *cdev_fault;
149 struct cdev *cdev_locate;
150 SCI_CONTROLLER_HANDLE_T handle;
156 struct ISCI_CONTROLLER
158 struct isci_softc *isci;
160 SCI_CONTROLLER_HANDLE_T scif_controller_handle;
161 struct ISCI_DOMAIN domain[SCI_MAX_DOMAINS];
163 BOOL has_been_scanned;
164 uint32_t initial_discovery_mask;
166 BOOL release_queued_ccbs;
167 uint8_t *remote_device_memory;
168 struct ISCI_MEMORY cached_controller_memory;
169 struct ISCI_MEMORY uncached_controller_memory;
170 struct ISCI_MEMORY request_memory;
171 bus_dma_tag_t buffer_dma_tag;
174 struct cam_path *path;
175 struct ISCI_REMOTE_DEVICE *remote_device[SCI_MAX_REMOTE_DEVICES];
177 SCIC_OEM_PARAMETERS_T oem_parameters;
178 uint32_t oem_parameters_version;
179 uint32_t queue_depth;
180 uint32_t sim_queue_depth;
181 SCI_FAST_LIST_T pending_device_reset_list;
182 struct ISCI_PHY phys[SCI_MAX_PHYS];
184 SCI_MEMORY_DESCRIPTOR_LIST_HANDLE_T mdl;
186 SCI_POOL_CREATE(remote_device_pool, struct ISCI_REMOTE_DEVICE *, SCI_MAX_REMOTE_DEVICES);
187 SCI_POOL_CREATE(request_pool, struct ISCI_REQUEST *, SCI_MAX_IO_REQUESTS);
188 SCI_POOL_CREATE(timer_pool, struct ISCI_TIMER *, SCI_MAX_TIMERS);
189 SCI_POOL_CREATE(unmap_buffer_pool, void *, SCI_MAX_REMOTE_DEVICES);
194 SCI_CONTROLLER_HANDLE_T controller_handle;
195 SCI_REMOTE_DEVICE_HANDLE_T remote_device_handle;
196 bus_dma_tag_t dma_tag;
197 bus_dmamap_t dma_map;
198 SCI_PHYSICAL_ADDRESS physical_address;
199 struct callout timer;
202 struct ISCI_IO_REQUEST
204 struct ISCI_REQUEST parent;
205 SCI_IO_REQUEST_HANDLE_T sci_object;
207 uint32_t num_segments;
208 uint32_t current_sge_index;
209 bus_dma_segment_t *sge;
212 struct ISCI_TASK_REQUEST
214 struct ISCI_REQUEST parent;
215 struct scsi_sense_data sense_data;
216 SCI_TASK_REQUEST_HANDLE_T sci_object;
221 struct ISCI_PCI_BAR {
223 bus_space_tag_t bus_tag;
224 bus_space_handle_t bus_handle;
226 struct resource *resource;
231 * One of these per allocated PCI device.
235 struct ISCI_PCI_BAR pci_bar[ISCI_NUM_PCI_BARS];
236 struct ISCI_CONTROLLER controllers[SCI_MAX_CONTROLLERS];
237 SCI_LIBRARY_HANDLE_T sci_library_handle;
238 void * sci_library_memory;
239 SCIC_CONTROLLER_HANDLER_METHODS_T handlers[4];
240 struct ISCI_INTERRUPT_INFO interrupt_info[4];
241 uint32_t controller_count;
242 uint32_t num_interrupts;
243 uint32_t coalesce_number;
244 uint32_t coalesce_timeout;
246 SCI_PCI_COMMON_HEADER_T pci_common_header;
247 BOOL oem_parameters_found;
248 struct intr_config_hook config_hook;
251 int isci_allocate_resources(device_t device);
253 int isci_allocate_dma_buffer(device_t device, struct ISCI_MEMORY *memory);
255 void isci_remote_device_reset(struct ISCI_REMOTE_DEVICE *remote_device,
259 * Returns the negotiated link rate (in KB/s) for the associated
260 * remote device. Used to fill out bitrate field for GET_TRANS_SETTINGS.
261 * Will match the negotiated link rate for the lowest numbered local phy
262 * in the port/domain containing this remote device.
264 uint32_t isci_remote_device_get_bitrate(
265 struct ISCI_REMOTE_DEVICE *remote_device);
267 void isci_remote_device_freeze_lun_queue(
268 struct ISCI_REMOTE_DEVICE *remote_device, lun_id_t lun);
270 void isci_remote_device_release_lun_queue(
271 struct ISCI_REMOTE_DEVICE *remote_device, lun_id_t lun);
273 void isci_remote_device_release_device_queue(
274 struct ISCI_REMOTE_DEVICE * remote_device);
276 void isci_request_construct(struct ISCI_REQUEST *request,
277 SCI_CONTROLLER_HANDLE_T scif_controller_handle,
278 bus_dma_tag_t io_buffer_dma_tag, bus_addr_t physical_address);
280 #define isci_io_request_get_max_io_size() \
281 ((SCI_MAX_SCATTER_GATHER_ELEMENTS - 1) * PAGE_SIZE)
283 #define isci_task_request_get_object_size() \
284 (sizeof(struct ISCI_TASK_REQUEST) + scif_task_request_get_object_size())
286 #define isci_io_request_get_object_size() \
287 (sizeof(struct ISCI_IO_REQUEST) + scif_io_request_get_object_size())
289 #define isci_request_get_object_size() \
291 isci_task_request_get_object_size(), \
292 isci_io_request_get_object_size() \
296 void isci_io_request_execute_scsi_io(union ccb *ccb,
297 struct ISCI_CONTROLLER *controller);
299 #if __FreeBSD_version >= 900026
300 void isci_io_request_execute_smp_io(
301 union ccb *ccb, struct ISCI_CONTROLLER *controller);
304 void isci_io_request_timeout(void *);
306 void isci_get_oem_parameters(struct isci_softc *isci);
308 void isci_io_request_complete(
309 SCI_CONTROLLER_HANDLE_T scif_controller,
310 SCI_REMOTE_DEVICE_HANDLE_T remote_device,
311 struct ISCI_IO_REQUEST * isci_request, SCI_IO_STATUS completion_status);
313 void isci_task_request_complete(
314 SCI_CONTROLLER_HANDLE_T scif_controller,
315 SCI_REMOTE_DEVICE_HANDLE_T remote_device,
316 SCI_TASK_REQUEST_HANDLE_T io_request, SCI_TASK_STATUS completion_status);
318 void isci_sysctl_initialize(struct isci_softc *isci);
320 void isci_controller_construct(struct ISCI_CONTROLLER *controller,
321 struct isci_softc *isci);
323 SCI_STATUS isci_controller_initialize(struct ISCI_CONTROLLER *controller);
325 int isci_controller_allocate_memory(struct ISCI_CONTROLLER *controller);
327 void isci_controller_domain_discovery_complete(
328 struct ISCI_CONTROLLER *isci_controller, struct ISCI_DOMAIN *isci_domain);
330 int isci_controller_attach_to_cam(struct ISCI_CONTROLLER *controller);
332 void isci_controller_start(void *controller);
334 void isci_controller_release_queued_ccbs(struct ISCI_CONTROLLER *controller);
336 void isci_domain_construct(struct ISCI_DOMAIN *domain, uint32_t domain_index,
337 struct ISCI_CONTROLLER *controller);
339 void isci_interrupt_setup(struct isci_softc *isci);
340 void isci_interrupt_poll_handler(struct ISCI_CONTROLLER *controller);
342 void isci_log_message(uint32_t verbosity, char *log_message_prefix,
343 char *log_message, ...);
345 extern uint32_t g_isci_debug_level;
347 #endif /* #ifndef _ISCI_H */