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mvsoc_space.c revision 1.7 
      1 /*	$NetBSD: mvsoc_space.c,v 1.7 2014/02/22 20:33:00 matt Exp $	*/
      2 /*
      3  * Copyright (c) 2007 KIYOHARA Takashi
      4  * All rights reserved.
      5  *
      6  * Redistribution and use in source and binary forms, with or without
      7  * modification, are permitted provided that the following conditions
      8  * are met:
      9  * 1. Redistributions of source code must retain the above copyright
     10  *    notice, this list of conditions and the following disclaimer.
     11  * 2. Redistributions in binary form must reproduce the above copyright
     12  *    notice, this list of conditions and the following disclaimer in the
     13  *    documentation and/or other materials provided with the distribution.
     14  *
     15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     16  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     17  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
     18  * DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
     19  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     20  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
     21  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     22  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
     23  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
     24  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     25  * POSSIBILITY OF SUCH DAMAGE.
     26  */
     27 
     28 #include <sys/cdefs.h>
     29 __KERNEL_RCSID(0, "$NetBSD: mvsoc_space.c,v 1.7 2014/02/22 20:33:00 matt Exp $");
     30 
     31 #include "opt_mvsoc.h"
     32 #include "mvpex.h"
     33 #include "gtpci.h"
     34 
     35 #include <sys/param.h>
     36 #include <sys/systm.h>
     37 
     38 #include <uvm/uvm_extern.h>
     39 
     40 #include <sys/bus.h>
     41 
     42 #include <arm/marvell/mvsocreg.h>
     43 #include <arm/marvell/mvsocvar.h>
     44 
     45 
     46 /* Proto types for all the bus_space structure functions */
     47 bs_protos(mvsoc);
     48 bs_protos(generic);
     49 bs_protos(generic_armv4);
     50 bs_protos(bs_notimpl);
     51 
     52 #define MVSOC_BUS_SPACE_NORMAL_FUNCS		\
     53 	/* read (single) */			\
     54 	generic_bs_r_1,				\
     55 	generic_armv4_bs_r_2,			\
     56 	generic_bs_r_4,				\
     57 	bs_notimpl_bs_r_8,			\
     58 						\
     59 	/* read multiple */			\
     60 	generic_bs_rm_1,			\
     61 	generic_armv4_bs_rm_2,			\
     62 	generic_bs_rm_4,			\
     63 	bs_notimpl_bs_rm_8,			\
     64 						\
     65 	/* read region */			\
     66 	generic_bs_rr_1,			\
     67 	generic_armv4_bs_rr_2,			\
     68 	generic_bs_rr_4,			\
     69 	bs_notimpl_bs_rr_8,			\
     70 						\
     71 	/* write (single) */			\
     72 	generic_bs_w_1,				\
     73 	generic_armv4_bs_w_2,			\
     74 	generic_bs_w_4,				\
     75 	bs_notimpl_bs_w_8,			\
     76 						\
     77 	/* write multiple */			\
     78 	generic_bs_wm_1,			\
     79 	generic_armv4_bs_wm_2,			\
     80 	generic_bs_wm_4,			\
     81 	bs_notimpl_bs_wm_8,			\
     82 						\
     83 	/* write region */			\
     84 	generic_bs_wr_1,			\
     85 	generic_armv4_bs_wr_2,			\
     86 	generic_bs_wr_4,			\
     87 	bs_notimpl_bs_wr_8
     88 
     89 #define MVSOC_BUS_SPACE_DEFAULT_FUNCS		\
     90 	/* mapping/unmapping */			\
     91 	mvsoc_bs_map,				\
     92 	mvsoc_bs_unmap,				\
     93 	mvsoc_bs_subregion,			\
     94 						\
     95 	/* allocation/deallocation */		\
     96 	mvsoc_bs_alloc,				\
     97 	mvsoc_bs_free,				\
     98 						\
     99 	/* get kernel virtual address */	\
    100 	mvsoc_bs_vaddr,				\
    101 						\
    102 	/* mmap bus space for userland */	\
    103 	bs_notimpl_bs_mmap,			\
    104 						\
    105 	/* barrier */				\
    106 	mvsoc_bs_barrier,			\
    107 						\
    108 	MVSOC_BUS_SPACE_NORMAL_FUNCS,		\
    109 						\
    110 	/* set multiple */			\
    111 	bs_notimpl_bs_sm_1,			\
    112 	bs_notimpl_bs_sm_2,			\
    113 	bs_notimpl_bs_sm_4,			\
    114 	bs_notimpl_bs_sm_8,			\
    115 						\
    116 	/* set region */			\
    117 	bs_notimpl_bs_sr_1,			\
    118 	generic_armv4_bs_sr_2,			\
    119 	generic_bs_sr_4,			\
    120 	bs_notimpl_bs_sr_8,			\
    121 						\
    122 	/* copy */				\
    123 	bs_notimpl_bs_c_1,			\
    124 	generic_armv4_bs_c_2,			\
    125 	bs_notimpl_bs_c_4,			\
    126 	bs_notimpl_bs_c_8
    127 
    128 
    129 struct bus_space mvsoc_bs_tag = {
    130 	/* cookie */
    131 	(void *)0,
    132 
    133 	MVSOC_BUS_SPACE_DEFAULT_FUNCS,
    134 #ifdef __BUS_SPACE_HAS_STREAM_METHODS
    135 	MVSOC_BUS_SPACE_NORMAL_FUNCS,
    136 #endif
    137 };
    138 
    139 #if NMVPEX > 0
    140 #if defined(ORION)
    141 struct bus_space orion_pex0_mem_bs_tag = {
    142 	/* cookie */
    143 	(void *)ORION_TAG_PEX0_MEM,
    144 
    145 	MVSOC_BUS_SPACE_DEFAULT_FUNCS,
    146 #ifdef __BUS_SPACE_HAS_STREAM_METHODS
    147 	MVSOC_BUS_SPACE_NORMAL_FUNCS,
    148 #endif
    149 };
    150 struct bus_space orion_pex0_io_bs_tag = {
    151 	/* cookie */
    152 	(void *)ORION_TAG_PEX0_IO,
    153 
    154 	MVSOC_BUS_SPACE_DEFAULT_FUNCS,
    155 #ifdef __BUS_SPACE_HAS_STREAM_METHODS
    156 	MVSOC_BUS_SPACE_NORMAL_FUNCS,
    157 #endif
    158 };
    159 struct bus_space orion_pex1_mem_bs_tag = {
    160 	/* cookie */
    161 	(void *)ORION_TAG_PEX1_MEM,
    162 
    163 	MVSOC_BUS_SPACE_DEFAULT_FUNCS,
    164 #ifdef __BUS_SPACE_HAS_STREAM_METHODS
    165 	MVSOC_BUS_SPACE_NORMAL_FUNCS,
    166 #endif
    167 };
    168 struct bus_space orion_pex1_io_bs_tag = {
    169 	/* cookie */
    170 	(void *)ORION_TAG_PEX1_IO,
    171 
    172 	MVSOC_BUS_SPACE_DEFAULT_FUNCS,
    173 #ifdef __BUS_SPACE_HAS_STREAM_METHODS
    174 	MVSOC_BUS_SPACE_NORMAL_FUNCS,
    175 #endif
    176 };
    177 #endif
    178 
    179 #if defined(KIRKWOOD)
    180 struct bus_space kirkwood_pex_mem_bs_tag = {
    181 	/* cookie */
    182 	(void *)KIRKWOOD_TAG_PEX_MEM,
    183 
    184 	MVSOC_BUS_SPACE_DEFAULT_FUNCS,
    185 #ifdef __BUS_SPACE_HAS_STREAM_METHODS
    186 	MVSOC_BUS_SPACE_NORMAL_FUNCS,
    187 #endif
    188 };
    189 struct bus_space kirkwood_pex_io_bs_tag = {
    190 	/* cookie */
    191 	(void *)KIRKWOOD_TAG_PEX_IO,
    192 
    193 	MVSOC_BUS_SPACE_DEFAULT_FUNCS,
    194 #ifdef __BUS_SPACE_HAS_STREAM_METHODS
    195 	MVSOC_BUS_SPACE_NORMAL_FUNCS,
    196 #endif
    197 };
    198 struct bus_space kirkwood_pex1_mem_bs_tag = {
    199 	/* cookie */
    200 	(void *)KIRKWOOD_TAG_PEX1_MEM,
    201 
    202 	MVSOC_BUS_SPACE_DEFAULT_FUNCS,
    203 #ifdef __BUS_SPACE_HAS_STREAM_METHODS
    204 	MVSOC_BUS_SPACE_NORMAL_FUNCS,
    205 #endif
    206 };
    207 struct bus_space kirkwood_pex1_io_bs_tag = {
    208 	/* cookie */
    209 	(void *)KIRKWOOD_TAG_PEX1_IO,
    210 
    211 	MVSOC_BUS_SPACE_DEFAULT_FUNCS,
    212 #ifdef __BUS_SPACE_HAS_STREAM_METHODS
    213 	MVSOC_BUS_SPACE_NORMAL_FUNCS,
    214 #endif
    215 };
    216 #endif
    217 
    218 #if defined(ARMADAXP)
    219 struct bus_space armadaxp_pex00_mem_bs_tag = {
    220 	/* cookie */
    221 	(void *)ARMADAXP_TAG_PEX00_MEM,
    222 
    223 	MVSOC_BUS_SPACE_DEFAULT_FUNCS
    224 };
    225 struct bus_space armadaxp_pex00_io_bs_tag = {
    226 	/* cookie */
    227 	(void *)ARMADAXP_TAG_PEX00_IO,
    228 
    229 	MVSOC_BUS_SPACE_DEFAULT_FUNCS
    230 };
    231 struct bus_space armadaxp_pex01_mem_bs_tag = {
    232 	/* cookie */
    233 	(void *)ARMADAXP_TAG_PEX01_MEM,
    234 
    235 	MVSOC_BUS_SPACE_DEFAULT_FUNCS
    236 };
    237 struct bus_space armadaxp_pex01_io_bs_tag = {
    238 	/* cookie */
    239 	(void *)ARMADAXP_TAG_PEX01_IO,
    240 
    241 	MVSOC_BUS_SPACE_DEFAULT_FUNCS
    242 };
    243 struct bus_space armadaxp_pex02_mem_bs_tag = {
    244 	/* cookie */
    245 	(void *)ARMADAXP_TAG_PEX02_MEM,
    246 
    247 	MVSOC_BUS_SPACE_DEFAULT_FUNCS
    248 };
    249 struct bus_space armadaxp_pex02_io_bs_tag = {
    250 	/* cookie */
    251 	(void *)ARMADAXP_TAG_PEX02_IO,
    252 
    253 	MVSOC_BUS_SPACE_DEFAULT_FUNCS
    254 };
    255 struct bus_space armadaxp_pex03_mem_bs_tag = {
    256 	/* cookie */
    257 	(void *)ARMADAXP_TAG_PEX03_MEM,
    258 
    259 	MVSOC_BUS_SPACE_DEFAULT_FUNCS
    260 };
    261 struct bus_space armadaxp_pex03_io_bs_tag = {
    262 	/* cookie */
    263 	(void *)ARMADAXP_TAG_PEX03_IO,
    264 
    265 	MVSOC_BUS_SPACE_DEFAULT_FUNCS
    266 };
    267 struct bus_space armadaxp_pex2_mem_bs_tag = {
    268 	/* cookie */
    269 	(void *)ARMADAXP_TAG_PEX2_MEM,
    270 
    271 	MVSOC_BUS_SPACE_DEFAULT_FUNCS
    272 };
    273 struct bus_space armadaxp_pex2_io_bs_tag = {
    274 	/* cookie */
    275 	(void *)ARMADAXP_TAG_PEX2_IO,
    276 
    277 	MVSOC_BUS_SPACE_DEFAULT_FUNCS
    278 };
    279 struct bus_space armadaxp_pex3_mem_bs_tag = {
    280 	/* cookie */
    281 	(void *)ARMADAXP_TAG_PEX3_MEM,
    282 
    283 	MVSOC_BUS_SPACE_DEFAULT_FUNCS
    284 };
    285 struct bus_space armadaxp_pex3_io_bs_tag = {
    286 	/* cookie */
    287 	(void *)ARMADAXP_TAG_PEX3_IO,
    288 
    289 	MVSOC_BUS_SPACE_DEFAULT_FUNCS
    290 };
    291 #endif
    292 #endif
    293 
    294 #if NGTPCI > 0
    295 #if defined(ORION)
    296 struct bus_space orion_pci_mem_bs_tag = {
    297 	/* cookie */
    298 	(void *)ORION_TAG_PCI_MEM,
    299 
    300 	MVSOC_BUS_SPACE_DEFAULT_FUNCS,
    301 #ifdef __BUS_SPACE_HAS_STREAM_METHODS
    302 	MVSOC_BUS_SPACE_NORMAL_FUNCS,
    303 #endif
    304 };
    305 struct bus_space orion_pci_io_bs_tag = {
    306 	/* cookie */
    307 	(void *)ORION_TAG_PCI_IO,
    308 
    309 	MVSOC_BUS_SPACE_DEFAULT_FUNCS,
    310 #ifdef __BUS_SPACE_HAS_STREAM_METHODS
    311 	MVSOC_BUS_SPACE_NORMAL_FUNCS,
    312 #endif
    313 };
    314 #endif
    315 #endif
    316 
    317 
    318 int
    319 mvsoc_bs_map(void *space, bus_addr_t address, bus_size_t size, int flags,
    320 	     bus_space_handle_t *handlep)
    321 {
    322 	const struct pmap_devmap *pd;
    323 	paddr_t startpa, endpa, offset, pa;
    324 	vaddr_t va;
    325 
    326 /*
    327  * XXX: We are not configuring any decode windows for Armada XP
    328  * 	at the moment. We rely on those that have been set by u-boot.
    329  *	Hence we don't want to mess around with decode windows,
    330  *	till we get full controll over them.
    331  */
    332 
    333 	int tag = (int)space;
    334 
    335 	if (tag != 0) {
    336 		bus_addr_t remap;
    337 		uint32_t base;
    338 		int window;
    339 
    340 		window = mvsoc_target(tag, NULL, NULL, &base, NULL);
    341 		if (window == -1)
    342 			return ENOMEM;
    343 		if (window < nremap) {
    344 			remap = read_mlmbreg(MVSOC_MLMB_WRLR(window)) &
    345 			    MVSOC_MLMB_WRLR_REMAP_MASK;
    346 			remap |=
    347 			    (read_mlmbreg(MVSOC_MLMB_WRHR(window)) << 16) << 16;
    348 			address = address - remap + base;
    349 		}
    350 	}
    351 
    352 	if ((pd = pmap_devmap_find_pa(address, size)) != NULL) {
    353 		/* Device was statically mapped. */
    354 		*handlep = pd->pd_va + (address - pd->pd_pa);
    355 		return 0;
    356 	}
    357 
    358 	startpa = trunc_page(address);
    359 	endpa = round_page(address + size);
    360 	offset = address & PAGE_MASK;
    361 
    362 	/* XXX use extent manager to check duplicate mapping */
    363 
    364 	va = uvm_km_alloc(kernel_map, endpa - startpa, 0,
    365 	    UVM_KMF_VAONLY | UVM_KMF_NOWAIT);
    366 	if (va == 0x00000000)
    367 		return ENOMEM;
    368 
    369 	*handlep = va + offset;
    370 
    371 	const int pmapflags =
    372 	    (flags & (BUS_SPACE_MAP_CACHEABLE|BUS_SPACE_MAP_PREFETCHABLE))
    373 		? 0
    374 		: PMAP_NOCACHE;
    375 
    376 	/* Now map the pages */
    377 	for (pa = startpa; pa < endpa; pa += PAGE_SIZE, va += PAGE_SIZE) {
    378 		pmap_kenter_pa(va, pa, VM_PROT_READ | VM_PROT_WRITE, pmapflags);
    379 	}
    380 	pmap_update(pmap_kernel());
    381 
    382 	return 0;
    383 }
    384 
    385 void
    386 mvsoc_bs_unmap(void *space, bus_space_handle_t handle, bus_size_t size)
    387 {
    388 	vaddr_t va, sz;
    389 
    390 	if (pmap_devmap_find_va(handle, size) != NULL)
    391 		/* Device was statically mapped; nothing to do. */
    392 		return;
    393 
    394 	va = trunc_page(handle);
    395         sz = round_page(handle + size) - va;
    396 
    397 	pmap_kremove(va, sz);
    398 	pmap_update(pmap_kernel());
    399 	uvm_km_free(kernel_map, va, sz, UVM_KMF_VAONLY);
    400 }
    401 
    402 /* ARGSUSED */
    403 int
    404 mvsoc_bs_subregion(void *space, bus_space_handle_t handle,
    405 		       bus_size_t offset, bus_size_t size,
    406 		       bus_space_handle_t *nhandlep)
    407 {
    408 
    409 	*nhandlep = handle + offset;
    410 	return 0;
    411 }
    412 
    413 /* ARGSUSED */
    414 int
    415 mvsoc_bs_alloc(void *space, bus_addr_t reg_start, bus_addr_t reg_end,
    416 	       bus_size_t size, bus_size_t alignment, bus_size_t boundary,
    417 	       int flags, bus_addr_t *addrp, bus_space_handle_t *handlep)
    418 {
    419 
    420 	panic("%s(): not implemented\n", __func__);
    421 }
    422 
    423 /* ARGSUSED */
    424 void
    425 mvsoc_bs_free(void *space, bus_space_handle_t handle, bus_size_t size)
    426 {
    427 
    428 	panic("%s(): not implemented\n", __func__);
    429 }
    430 
    431 /* ARGSUSED */
    432 void
    433 mvsoc_bs_barrier(void *space, bus_space_handle_t handle, bus_size_t offset,
    434 		 bus_size_t length, int flags)
    435 {
    436 
    437 	/* Nothing to do. */
    438 }
    439 
    440 /* ARGSUSED */
    441 void *
    442 mvsoc_bs_vaddr(void *space, bus_space_handle_t handle)
    443 {
    444 
    445 	return (void *)handle;
    446 }
    447