1603 lines
43 KiB
C
1603 lines
43 KiB
C
/*-
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* Copyright (c) 2008 Alexander Motin <mav@FreeBSD.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/bus.h>
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#include <sys/conf.h>
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#include <sys/kernel.h>
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#include <sys/lock.h>
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#include <sys/module.h>
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#include <sys/mutex.h>
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#include <sys/resource.h>
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#include <sys/rman.h>
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#include <sys/sysctl.h>
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#include <sys/taskqueue.h>
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#include <dev/pci/pcireg.h>
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#include <dev/pci/pcivar.h>
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#include <machine/bus.h>
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#include <machine/resource.h>
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#include <machine/stdarg.h>
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#include <dev/mmc/bridge.h>
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#include <dev/mmc/mmcreg.h>
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#include <dev/mmc/mmcbrvar.h>
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#include "mmcbr_if.h"
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#include "sdhci.h"
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#define DMA_BLOCK_SIZE 4096
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#define DMA_BOUNDARY 0 /* DMA reload every 4K */
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/* Controller doesn't honor resets unless we touch the clock register */
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#define SDHCI_QUIRK_CLOCK_BEFORE_RESET (1<<0)
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/* Controller really supports DMA */
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#define SDHCI_QUIRK_FORCE_DMA (1<<1)
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/* Controller has unusable DMA engine */
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#define SDHCI_QUIRK_BROKEN_DMA (1<<2)
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/* Controller doesn't like to be reset when there is no card inserted. */
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#define SDHCI_QUIRK_NO_CARD_NO_RESET (1<<3)
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/* Controller has flaky internal state so reset it on each ios change */
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#define SDHCI_QUIRK_RESET_ON_IOS (1<<4)
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/* Controller can only DMA chunk sizes that are a multiple of 32 bits */
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#define SDHCI_QUIRK_32BIT_DMA_SIZE (1<<5)
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/* Controller needs to be reset after each request to stay stable */
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#define SDHCI_QUIRK_RESET_AFTER_REQUEST (1<<6)
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/* Controller has an off-by-one issue with timeout value */
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#define SDHCI_QUIRK_INCR_TIMEOUT_CONTROL (1<<7)
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/* Controller has broken read timings */
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#define SDHCI_QUIRK_BROKEN_TIMINGS (1<<8)
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/* Controller needs lowered frequency */
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#define SDHCI_QUIRK_LOWER_FREQUENCY (1<<9)
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static const struct sdhci_device {
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uint32_t model;
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uint16_t subvendor;
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char *desc;
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u_int quirks;
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} sdhci_devices[] = {
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{ 0x08221180, 0xffff, "RICOH R5C822 SD",
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SDHCI_QUIRK_FORCE_DMA },
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{ 0xe8221180, 0xffff, "RICOH SD",
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SDHCI_QUIRK_FORCE_DMA },
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{ 0xe8231180, 0xffff, "RICOH R5CE823 SD",
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SDHCI_QUIRK_LOWER_FREQUENCY },
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{ 0x8034104c, 0xffff, "TI XX21/XX11 SD",
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SDHCI_QUIRK_FORCE_DMA },
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{ 0x05501524, 0xffff, "ENE CB712 SD",
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SDHCI_QUIRK_BROKEN_TIMINGS },
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{ 0x05511524, 0xffff, "ENE CB712 SD 2",
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SDHCI_QUIRK_BROKEN_TIMINGS },
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{ 0x07501524, 0xffff, "ENE CB714 SD",
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SDHCI_QUIRK_RESET_ON_IOS |
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SDHCI_QUIRK_BROKEN_TIMINGS },
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{ 0x07511524, 0xffff, "ENE CB714 SD 2",
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SDHCI_QUIRK_RESET_ON_IOS |
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SDHCI_QUIRK_BROKEN_TIMINGS },
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{ 0x410111ab, 0xffff, "Marvell CaFe SD",
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SDHCI_QUIRK_INCR_TIMEOUT_CONTROL },
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{ 0x2381197B, 0xffff, "JMicron JMB38X SD",
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SDHCI_QUIRK_32BIT_DMA_SIZE |
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SDHCI_QUIRK_RESET_AFTER_REQUEST },
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{ 0, 0xffff, NULL,
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0 }
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};
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struct sdhci_softc;
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struct sdhci_slot {
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struct sdhci_softc *sc;
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device_t dev; /* Slot device */
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u_char num; /* Slot number */
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u_char opt; /* Slot options */
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#define SDHCI_HAVE_DMA 1
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uint32_t max_clk; /* Max possible freq */
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uint32_t timeout_clk; /* Timeout freq */
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struct resource *mem_res; /* Memory resource */
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int mem_rid;
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bus_dma_tag_t dmatag;
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bus_dmamap_t dmamap;
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u_char *dmamem;
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bus_addr_t paddr; /* DMA buffer address */
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struct task card_task; /* Card presence check task */
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struct callout card_callout; /* Card insert delay callout */
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struct mmc_host host; /* Host parameters */
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struct mmc_request *req; /* Current request */
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struct mmc_command *curcmd; /* Current command of current request */
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uint32_t intmask; /* Current interrupt mask */
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uint32_t clock; /* Current clock freq. */
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size_t offset; /* Data buffer offset */
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uint8_t hostctrl; /* Current host control register */
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u_char power; /* Current power */
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u_char bus_busy; /* Bus busy status */
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u_char cmd_done; /* CMD command part done flag */
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u_char data_done; /* DAT command part done flag */
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u_char flags; /* Request execution flags */
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#define CMD_STARTED 1
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#define STOP_STARTED 2
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#define SDHCI_USE_DMA 4 /* Use DMA for this req. */
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struct mtx mtx; /* Slot mutex */
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};
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struct sdhci_softc {
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device_t dev; /* Controller device */
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u_int quirks; /* Chip specific quirks */
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struct resource *irq_res; /* IRQ resource */
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int irq_rid;
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void *intrhand; /* Interrupt handle */
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int num_slots; /* Number of slots on this controller */
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struct sdhci_slot slots[6];
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};
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static SYSCTL_NODE(_hw, OID_AUTO, sdhci, CTLFLAG_RD, 0, "sdhci driver");
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int sdhci_debug;
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TUNABLE_INT("hw.sdhci.debug", &sdhci_debug);
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SYSCTL_INT(_hw_sdhci, OID_AUTO, debug, CTLFLAG_RW, &sdhci_debug, 0, "Debug level");
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static inline uint8_t
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RD1(struct sdhci_slot *slot, bus_size_t off)
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{
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bus_barrier(slot->mem_res, 0, 0xFF,
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BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE);
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return bus_read_1(slot->mem_res, off);
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}
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static inline void
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WR1(struct sdhci_slot *slot, bus_size_t off, uint8_t val)
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{
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bus_barrier(slot->mem_res, 0, 0xFF,
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BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE);
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bus_write_1(slot->mem_res, off, val);
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}
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static inline uint16_t
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RD2(struct sdhci_slot *slot, bus_size_t off)
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{
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bus_barrier(slot->mem_res, 0, 0xFF,
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BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE);
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return bus_read_2(slot->mem_res, off);
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}
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static inline void
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WR2(struct sdhci_slot *slot, bus_size_t off, uint16_t val)
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{
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bus_barrier(slot->mem_res, 0, 0xFF,
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BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE);
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bus_write_2(slot->mem_res, off, val);
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}
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static inline uint32_t
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RD4(struct sdhci_slot *slot, bus_size_t off)
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{
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bus_barrier(slot->mem_res, 0, 0xFF,
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BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE);
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return bus_read_4(slot->mem_res, off);
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}
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static inline void
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WR4(struct sdhci_slot *slot, bus_size_t off, uint32_t val)
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{
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bus_barrier(slot->mem_res, 0, 0xFF,
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BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE);
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bus_write_4(slot->mem_res, off, val);
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}
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/* bus entry points */
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static int sdhci_probe(device_t dev);
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static int sdhci_attach(device_t dev);
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static int sdhci_detach(device_t dev);
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static void sdhci_intr(void *);
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static void sdhci_set_clock(struct sdhci_slot *slot, uint32_t clock);
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static void sdhci_start(struct sdhci_slot *slot);
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static void sdhci_start_data(struct sdhci_slot *slot, struct mmc_data *data);
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static void sdhci_card_task(void *, int);
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/* helper routines */
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#define SDHCI_LOCK(_slot) mtx_lock(&(_slot)->mtx)
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#define SDHCI_UNLOCK(_slot) mtx_unlock(&(_slot)->mtx)
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#define SDHCI_LOCK_INIT(_slot) \
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mtx_init(&_slot->mtx, "SD slot mtx", "sdhci", MTX_DEF)
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#define SDHCI_LOCK_DESTROY(_slot) mtx_destroy(&_slot->mtx);
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#define SDHCI_ASSERT_LOCKED(_slot) mtx_assert(&_slot->mtx, MA_OWNED);
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#define SDHCI_ASSERT_UNLOCKED(_slot) mtx_assert(&_slot->mtx, MA_NOTOWNED);
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static int
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slot_printf(struct sdhci_slot *slot, const char * fmt, ...)
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{
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va_list ap;
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int retval;
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retval = printf("%s-slot%d: ",
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device_get_nameunit(slot->sc->dev), slot->num);
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va_start(ap, fmt);
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retval += vprintf(fmt, ap);
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va_end(ap);
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return (retval);
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}
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static void
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sdhci_getaddr(void *arg, bus_dma_segment_t *segs, int nsegs, int error)
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{
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if (error != 0) {
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printf("getaddr: error %d\n", error);
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return;
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}
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*(bus_addr_t *)arg = segs[0].ds_addr;
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}
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static void
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sdhci_dumpregs(struct sdhci_slot *slot)
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{
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slot_printf(slot,
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"============== REGISTER DUMP ==============\n");
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slot_printf(slot, "Sys addr: 0x%08x | Version: 0x%08x\n",
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RD4(slot, SDHCI_DMA_ADDRESS), RD2(slot, SDHCI_HOST_VERSION));
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slot_printf(slot, "Blk size: 0x%08x | Blk cnt: 0x%08x\n",
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RD2(slot, SDHCI_BLOCK_SIZE), RD2(slot, SDHCI_BLOCK_COUNT));
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slot_printf(slot, "Argument: 0x%08x | Trn mode: 0x%08x\n",
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RD4(slot, SDHCI_ARGUMENT), RD2(slot, SDHCI_TRANSFER_MODE));
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slot_printf(slot, "Present: 0x%08x | Host ctl: 0x%08x\n",
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RD4(slot, SDHCI_PRESENT_STATE), RD1(slot, SDHCI_HOST_CONTROL));
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slot_printf(slot, "Power: 0x%08x | Blk gap: 0x%08x\n",
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RD1(slot, SDHCI_POWER_CONTROL), RD1(slot, SDHCI_BLOCK_GAP_CONTROL));
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slot_printf(slot, "Wake-up: 0x%08x | Clock: 0x%08x\n",
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RD1(slot, SDHCI_WAKE_UP_CONTROL), RD2(slot, SDHCI_CLOCK_CONTROL));
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slot_printf(slot, "Timeout: 0x%08x | Int stat: 0x%08x\n",
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RD1(slot, SDHCI_TIMEOUT_CONTROL), RD4(slot, SDHCI_INT_STATUS));
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slot_printf(slot, "Int enab: 0x%08x | Sig enab: 0x%08x\n",
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RD4(slot, SDHCI_INT_ENABLE), RD4(slot, SDHCI_SIGNAL_ENABLE));
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slot_printf(slot, "AC12 err: 0x%08x | Slot int: 0x%08x\n",
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RD2(slot, SDHCI_ACMD12_ERR), RD2(slot, SDHCI_SLOT_INT_STATUS));
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slot_printf(slot, "Caps: 0x%08x | Max curr: 0x%08x\n",
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RD4(slot, SDHCI_CAPABILITIES), RD4(slot, SDHCI_MAX_CURRENT));
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slot_printf(slot,
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"===========================================\n");
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}
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static void
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sdhci_reset(struct sdhci_slot *slot, uint8_t mask)
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{
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int timeout;
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uint8_t res;
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if (slot->sc->quirks & SDHCI_QUIRK_NO_CARD_NO_RESET) {
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if (!(RD4(slot, SDHCI_PRESENT_STATE) &
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SDHCI_CARD_PRESENT))
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return;
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}
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/* Some controllers need this kick or reset won't work. */
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if ((mask & SDHCI_RESET_ALL) == 0 &&
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(slot->sc->quirks & SDHCI_QUIRK_CLOCK_BEFORE_RESET)) {
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uint32_t clock;
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/* This is to force an update */
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clock = slot->clock;
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slot->clock = 0;
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sdhci_set_clock(slot, clock);
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}
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WR1(slot, SDHCI_SOFTWARE_RESET, mask);
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if (mask & SDHCI_RESET_ALL) {
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slot->clock = 0;
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slot->power = 0;
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}
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/* Wait max 100 ms */
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timeout = 100;
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/* Controller clears the bits when it's done */
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while ((res = RD1(slot, SDHCI_SOFTWARE_RESET)) & mask) {
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if (timeout == 0) {
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slot_printf(slot,
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"Reset 0x%x never completed - 0x%x.\n",
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(int)mask, (int)res);
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sdhci_dumpregs(slot);
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return;
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}
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timeout--;
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DELAY(1000);
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}
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}
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static void
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sdhci_init(struct sdhci_slot *slot)
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{
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sdhci_reset(slot, SDHCI_RESET_ALL);
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/* Enable interrupts. */
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slot->intmask = SDHCI_INT_BUS_POWER | SDHCI_INT_DATA_END_BIT |
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SDHCI_INT_DATA_CRC | SDHCI_INT_DATA_TIMEOUT | SDHCI_INT_INDEX |
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SDHCI_INT_END_BIT | SDHCI_INT_CRC | SDHCI_INT_TIMEOUT |
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SDHCI_INT_CARD_REMOVE | SDHCI_INT_CARD_INSERT |
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SDHCI_INT_DATA_AVAIL | SDHCI_INT_SPACE_AVAIL |
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SDHCI_INT_DMA_END | SDHCI_INT_DATA_END | SDHCI_INT_RESPONSE |
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SDHCI_INT_ACMD12ERR;
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WR4(slot, SDHCI_INT_ENABLE, slot->intmask);
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WR4(slot, SDHCI_SIGNAL_ENABLE, slot->intmask);
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}
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static void
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sdhci_lower_frequency(device_t dev)
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{
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/* Enable SD2.0 mode. */
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pci_write_config(dev, SDHC_PCI_MODE_KEY, 0xfc, 1);
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pci_write_config(dev, SDHC_PCI_MODE, SDHC_PCI_MODE_SD20, 1);
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pci_write_config(dev, SDHC_PCI_MODE_KEY, 0x00, 1);
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/*
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* Some SD/MMC cards don't work with the default base
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* clock frequency of 200MHz. Lower it to 50MHz.
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*/
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pci_write_config(dev, SDHC_PCI_BASE_FREQ_KEY, 0x01, 1);
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pci_write_config(dev, SDHC_PCI_BASE_FREQ, 50, 1);
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pci_write_config(dev, SDHC_PCI_BASE_FREQ_KEY, 0x00, 1);
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}
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static void
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sdhci_set_clock(struct sdhci_slot *slot, uint32_t clock)
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{
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uint32_t res;
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uint16_t clk;
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int timeout;
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if (clock == slot->clock)
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return;
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slot->clock = clock;
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/* Turn off the clock. */
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WR2(slot, SDHCI_CLOCK_CONTROL, 0);
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/* If no clock requested - left it so. */
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if (clock == 0)
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return;
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/* Looking for highest freq <= clock. */
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res = slot->max_clk;
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for (clk = 1; clk < 256; clk <<= 1) {
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if (res <= clock)
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break;
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res >>= 1;
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}
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/* Divider 1:1 is 0x00, 2:1 is 0x01, 256:1 is 0x80 ... */
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clk >>= 1;
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/* Now we have got divider, set it. */
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clk <<= SDHCI_DIVIDER_SHIFT;
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WR2(slot, SDHCI_CLOCK_CONTROL, clk);
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/* Enable clock. */
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clk |= SDHCI_CLOCK_INT_EN;
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WR2(slot, SDHCI_CLOCK_CONTROL, clk);
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/* Wait up to 10 ms until it stabilize. */
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timeout = 10;
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while (!((clk = RD2(slot, SDHCI_CLOCK_CONTROL))
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& SDHCI_CLOCK_INT_STABLE)) {
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if (timeout == 0) {
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slot_printf(slot,
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"Internal clock never stabilised.\n");
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sdhci_dumpregs(slot);
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return;
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}
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timeout--;
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DELAY(1000);
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}
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/* Pass clock signal to the bus. */
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clk |= SDHCI_CLOCK_CARD_EN;
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WR2(slot, SDHCI_CLOCK_CONTROL, clk);
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}
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static void
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sdhci_set_power(struct sdhci_slot *slot, u_char power)
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{
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uint8_t pwr;
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if (slot->power == power)
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return;
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slot->power = power;
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/* Turn off the power. */
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pwr = 0;
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WR1(slot, SDHCI_POWER_CONTROL, pwr);
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/* If power down requested - left it so. */
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if (power == 0)
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return;
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/* Set voltage. */
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switch (1 << power) {
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case MMC_OCR_LOW_VOLTAGE:
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pwr |= SDHCI_POWER_180;
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break;
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case MMC_OCR_290_300:
|
|
case MMC_OCR_300_310:
|
|
pwr |= SDHCI_POWER_300;
|
|
break;
|
|
case MMC_OCR_320_330:
|
|
case MMC_OCR_330_340:
|
|
pwr |= SDHCI_POWER_330;
|
|
break;
|
|
}
|
|
WR1(slot, SDHCI_POWER_CONTROL, pwr);
|
|
/* Turn on the power. */
|
|
pwr |= SDHCI_POWER_ON;
|
|
WR1(slot, SDHCI_POWER_CONTROL, pwr);
|
|
}
|
|
|
|
static void
|
|
sdhci_read_block_pio(struct sdhci_slot *slot)
|
|
{
|
|
uint32_t data;
|
|
char *buffer;
|
|
size_t left;
|
|
|
|
buffer = slot->curcmd->data->data;
|
|
buffer += slot->offset;
|
|
/* Transfer one block at a time. */
|
|
left = min(512, slot->curcmd->data->len - slot->offset);
|
|
slot->offset += left;
|
|
|
|
/* If we are too fast, broken controllers return zeroes. */
|
|
if (slot->sc->quirks & SDHCI_QUIRK_BROKEN_TIMINGS)
|
|
DELAY(10);
|
|
/* Handle unalligned and alligned buffer cases. */
|
|
if ((intptr_t)buffer & 3) {
|
|
while (left > 3) {
|
|
data = RD4(slot, SDHCI_BUFFER);
|
|
buffer[0] = data;
|
|
buffer[1] = (data >> 8);
|
|
buffer[2] = (data >> 16);
|
|
buffer[3] = (data >> 24);
|
|
buffer += 4;
|
|
left -= 4;
|
|
}
|
|
} else {
|
|
bus_read_multi_stream_4(slot->mem_res, SDHCI_BUFFER,
|
|
(uint32_t *)buffer, left >> 2);
|
|
left &= 3;
|
|
}
|
|
/* Handle uneven size case. */
|
|
if (left > 0) {
|
|
data = RD4(slot, SDHCI_BUFFER);
|
|
while (left > 0) {
|
|
*(buffer++) = data;
|
|
data >>= 8;
|
|
left--;
|
|
}
|
|
}
|
|
}
|
|
|
|
static void
|
|
sdhci_write_block_pio(struct sdhci_slot *slot)
|
|
{
|
|
uint32_t data = 0;
|
|
char *buffer;
|
|
size_t left;
|
|
|
|
buffer = slot->curcmd->data->data;
|
|
buffer += slot->offset;
|
|
/* Transfer one block at a time. */
|
|
left = min(512, slot->curcmd->data->len - slot->offset);
|
|
slot->offset += left;
|
|
|
|
/* Handle unalligned and alligned buffer cases. */
|
|
if ((intptr_t)buffer & 3) {
|
|
while (left > 3) {
|
|
data = buffer[0] +
|
|
(buffer[1] << 8) +
|
|
(buffer[2] << 16) +
|
|
(buffer[3] << 24);
|
|
left -= 4;
|
|
buffer += 4;
|
|
WR4(slot, SDHCI_BUFFER, data);
|
|
}
|
|
} else {
|
|
bus_write_multi_stream_4(slot->mem_res, SDHCI_BUFFER,
|
|
(uint32_t *)buffer, left >> 2);
|
|
left &= 3;
|
|
}
|
|
/* Handle uneven size case. */
|
|
if (left > 0) {
|
|
while (left > 0) {
|
|
data <<= 8;
|
|
data += *(buffer++);
|
|
left--;
|
|
}
|
|
WR4(slot, SDHCI_BUFFER, data);
|
|
}
|
|
}
|
|
|
|
static void
|
|
sdhci_transfer_pio(struct sdhci_slot *slot)
|
|
{
|
|
|
|
/* Read as many blocks as possible. */
|
|
if (slot->curcmd->data->flags & MMC_DATA_READ) {
|
|
while (RD4(slot, SDHCI_PRESENT_STATE) &
|
|
SDHCI_DATA_AVAILABLE) {
|
|
sdhci_read_block_pio(slot);
|
|
if (slot->offset >= slot->curcmd->data->len)
|
|
break;
|
|
}
|
|
} else {
|
|
while (RD4(slot, SDHCI_PRESENT_STATE) &
|
|
SDHCI_SPACE_AVAILABLE) {
|
|
sdhci_write_block_pio(slot);
|
|
if (slot->offset >= slot->curcmd->data->len)
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
static void
|
|
sdhci_card_delay(void *arg)
|
|
{
|
|
struct sdhci_slot *slot = arg;
|
|
|
|
taskqueue_enqueue(taskqueue_swi_giant, &slot->card_task);
|
|
}
|
|
|
|
static void
|
|
sdhci_card_task(void *arg, int pending)
|
|
{
|
|
struct sdhci_slot *slot = arg;
|
|
|
|
SDHCI_LOCK(slot);
|
|
if (RD4(slot, SDHCI_PRESENT_STATE) & SDHCI_CARD_PRESENT) {
|
|
if (slot->dev == NULL) {
|
|
/* If card is present - attach mmc bus. */
|
|
slot->dev = device_add_child(slot->sc->dev, "mmc", -1);
|
|
device_set_ivars(slot->dev, slot);
|
|
SDHCI_UNLOCK(slot);
|
|
device_probe_and_attach(slot->dev);
|
|
} else
|
|
SDHCI_UNLOCK(slot);
|
|
} else {
|
|
if (slot->dev != NULL) {
|
|
/* If no card present - detach mmc bus. */
|
|
device_t d = slot->dev;
|
|
slot->dev = NULL;
|
|
SDHCI_UNLOCK(slot);
|
|
device_delete_child(slot->sc->dev, d);
|
|
} else
|
|
SDHCI_UNLOCK(slot);
|
|
}
|
|
}
|
|
|
|
static int
|
|
sdhci_probe(device_t dev)
|
|
{
|
|
uint32_t model;
|
|
uint16_t subvendor;
|
|
uint8_t class, subclass;
|
|
int i, result;
|
|
|
|
model = (uint32_t)pci_get_device(dev) << 16;
|
|
model |= (uint32_t)pci_get_vendor(dev) & 0x0000ffff;
|
|
subvendor = pci_get_subvendor(dev);
|
|
class = pci_get_class(dev);
|
|
subclass = pci_get_subclass(dev);
|
|
|
|
result = ENXIO;
|
|
for (i = 0; sdhci_devices[i].model != 0; i++) {
|
|
if (sdhci_devices[i].model == model &&
|
|
(sdhci_devices[i].subvendor == 0xffff ||
|
|
sdhci_devices[i].subvendor == subvendor)) {
|
|
device_set_desc(dev, sdhci_devices[i].desc);
|
|
result = BUS_PROBE_DEFAULT;
|
|
break;
|
|
}
|
|
}
|
|
if (result == ENXIO && class == PCIC_BASEPERIPH &&
|
|
subclass == PCIS_BASEPERIPH_SDHC) {
|
|
device_set_desc(dev, "Generic SD HCI");
|
|
result = BUS_PROBE_GENERIC;
|
|
}
|
|
|
|
return (result);
|
|
}
|
|
|
|
static int
|
|
sdhci_attach(device_t dev)
|
|
{
|
|
struct sdhci_softc *sc = device_get_softc(dev);
|
|
uint32_t model;
|
|
uint16_t subvendor;
|
|
uint8_t class, subclass, progif;
|
|
int err, slots, bar, i;
|
|
|
|
sc->dev = dev;
|
|
model = (uint32_t)pci_get_device(dev) << 16;
|
|
model |= (uint32_t)pci_get_vendor(dev) & 0x0000ffff;
|
|
subvendor = pci_get_subvendor(dev);
|
|
class = pci_get_class(dev);
|
|
subclass = pci_get_subclass(dev);
|
|
progif = pci_get_progif(dev);
|
|
/* Apply chip specific quirks. */
|
|
for (i = 0; sdhci_devices[i].model != 0; i++) {
|
|
if (sdhci_devices[i].model == model &&
|
|
(sdhci_devices[i].subvendor == 0xffff ||
|
|
sdhci_devices[i].subvendor == subvendor)) {
|
|
sc->quirks = sdhci_devices[i].quirks;
|
|
break;
|
|
}
|
|
}
|
|
/* Some controllers need to be bumped into the right mode. */
|
|
if (sc->quirks & SDHCI_QUIRK_LOWER_FREQUENCY)
|
|
sdhci_lower_frequency(dev);
|
|
/* Read slots info from PCI registers. */
|
|
slots = pci_read_config(dev, PCI_SLOT_INFO, 1);
|
|
bar = PCI_SLOT_INFO_FIRST_BAR(slots);
|
|
slots = PCI_SLOT_INFO_SLOTS(slots);
|
|
if (slots > 6 || bar > 5) {
|
|
device_printf(dev, "Incorrect slots information (%d, %d).\n",
|
|
slots, bar);
|
|
return (EINVAL);
|
|
}
|
|
/* Allocate IRQ. */
|
|
sc->irq_rid = 0;
|
|
sc->irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &sc->irq_rid,
|
|
RF_SHAREABLE | RF_ACTIVE);
|
|
if (sc->irq_res == NULL) {
|
|
device_printf(dev, "Can't allocate IRQ\n");
|
|
return (ENOMEM);
|
|
}
|
|
/* Scan all slots. */
|
|
for (i = 0; i < slots; i++) {
|
|
struct sdhci_slot *slot = &sc->slots[sc->num_slots];
|
|
uint32_t caps;
|
|
|
|
SDHCI_LOCK_INIT(slot);
|
|
slot->sc = sc;
|
|
slot->num = sc->num_slots;
|
|
/* Allocate memory. */
|
|
slot->mem_rid = PCIR_BAR(bar + i);
|
|
slot->mem_res = bus_alloc_resource(dev,
|
|
SYS_RES_MEMORY, &slot->mem_rid, 0ul, ~0ul, 0x100, RF_ACTIVE);
|
|
if (slot->mem_res == NULL) {
|
|
device_printf(dev, "Can't allocate memory\n");
|
|
SDHCI_LOCK_DESTROY(slot);
|
|
continue;
|
|
}
|
|
/* Allocate DMA tag. */
|
|
err = bus_dma_tag_create(bus_get_dma_tag(dev),
|
|
DMA_BLOCK_SIZE, 0, BUS_SPACE_MAXADDR_32BIT,
|
|
BUS_SPACE_MAXADDR, NULL, NULL,
|
|
DMA_BLOCK_SIZE, 1, DMA_BLOCK_SIZE,
|
|
BUS_DMA_ALLOCNOW, NULL, NULL,
|
|
&slot->dmatag);
|
|
if (err != 0) {
|
|
device_printf(dev, "Can't create DMA tag\n");
|
|
SDHCI_LOCK_DESTROY(slot);
|
|
continue;
|
|
}
|
|
/* Allocate DMA memory. */
|
|
err = bus_dmamem_alloc(slot->dmatag, (void **)&slot->dmamem,
|
|
BUS_DMA_NOWAIT, &slot->dmamap);
|
|
if (err != 0) {
|
|
device_printf(dev, "Can't alloc DMA memory\n");
|
|
SDHCI_LOCK_DESTROY(slot);
|
|
continue;
|
|
}
|
|
/* Map the memory. */
|
|
err = bus_dmamap_load(slot->dmatag, slot->dmamap,
|
|
(void *)slot->dmamem, DMA_BLOCK_SIZE,
|
|
sdhci_getaddr, &slot->paddr, 0);
|
|
if (err != 0 || slot->paddr == 0) {
|
|
device_printf(dev, "Can't load DMA memory\n");
|
|
SDHCI_LOCK_DESTROY(slot);
|
|
continue;
|
|
}
|
|
/* Initialize slot. */
|
|
sdhci_init(slot);
|
|
caps = RD4(slot, SDHCI_CAPABILITIES);
|
|
/* Calculate base clock frequency. */
|
|
slot->max_clk =
|
|
(caps & SDHCI_CLOCK_BASE_MASK) >> SDHCI_CLOCK_BASE_SHIFT;
|
|
if (slot->max_clk == 0) {
|
|
device_printf(dev, "Hardware doesn't specify base clock "
|
|
"frequency.\n");
|
|
}
|
|
slot->max_clk *= 1000000;
|
|
/* Calculate timeout clock frequency. */
|
|
slot->timeout_clk =
|
|
(caps & SDHCI_TIMEOUT_CLK_MASK) >> SDHCI_TIMEOUT_CLK_SHIFT;
|
|
if (slot->timeout_clk == 0) {
|
|
device_printf(dev, "Hardware doesn't specify timeout clock "
|
|
"frequency.\n");
|
|
}
|
|
if (caps & SDHCI_TIMEOUT_CLK_UNIT)
|
|
slot->timeout_clk *= 1000;
|
|
|
|
slot->host.f_min = slot->max_clk / 256;
|
|
slot->host.f_max = slot->max_clk;
|
|
slot->host.host_ocr = 0;
|
|
if (caps & SDHCI_CAN_VDD_330)
|
|
slot->host.host_ocr |= MMC_OCR_320_330 | MMC_OCR_330_340;
|
|
if (caps & SDHCI_CAN_VDD_300)
|
|
slot->host.host_ocr |= MMC_OCR_290_300 | MMC_OCR_300_310;
|
|
if (caps & SDHCI_CAN_VDD_180)
|
|
slot->host.host_ocr |= MMC_OCR_LOW_VOLTAGE;
|
|
if (slot->host.host_ocr == 0) {
|
|
device_printf(dev, "Hardware doesn't report any "
|
|
"support voltages.\n");
|
|
}
|
|
slot->host.caps = MMC_CAP_4_BIT_DATA;
|
|
if (caps & SDHCI_CAN_DO_HISPD)
|
|
slot->host.caps |= MMC_CAP_HSPEED;
|
|
/* Decide if we have usable DMA. */
|
|
if (caps & SDHCI_CAN_DO_DMA)
|
|
slot->opt |= SDHCI_HAVE_DMA;
|
|
if (class == PCIC_BASEPERIPH &&
|
|
subclass == PCIS_BASEPERIPH_SDHC &&
|
|
progif != PCI_SDHCI_IFDMA)
|
|
slot->opt &= ~SDHCI_HAVE_DMA;
|
|
if (sc->quirks & SDHCI_QUIRK_BROKEN_DMA)
|
|
slot->opt &= ~SDHCI_HAVE_DMA;
|
|
if (sc->quirks & SDHCI_QUIRK_FORCE_DMA)
|
|
slot->opt |= SDHCI_HAVE_DMA;
|
|
|
|
if (bootverbose || sdhci_debug) {
|
|
slot_printf(slot, "%uMHz%s 4bits%s%s%s %s\n",
|
|
slot->max_clk / 1000000,
|
|
(caps & SDHCI_CAN_DO_HISPD) ? " HS" : "",
|
|
(caps & SDHCI_CAN_VDD_330) ? " 3.3V" : "",
|
|
(caps & SDHCI_CAN_VDD_300) ? " 3.0V" : "",
|
|
(caps & SDHCI_CAN_VDD_180) ? " 1.8V" : "",
|
|
(slot->opt & SDHCI_HAVE_DMA) ? "DMA" : "PIO");
|
|
sdhci_dumpregs(slot);
|
|
}
|
|
|
|
TASK_INIT(&slot->card_task, 0, sdhci_card_task, slot);
|
|
callout_init(&slot->card_callout, 1);
|
|
sc->num_slots++;
|
|
}
|
|
device_printf(dev, "%d slot(s) allocated\n", sc->num_slots);
|
|
/* Activate the interrupt */
|
|
err = bus_setup_intr(dev, sc->irq_res, INTR_TYPE_MISC | INTR_MPSAFE,
|
|
NULL, sdhci_intr, sc, &sc->intrhand);
|
|
if (err)
|
|
device_printf(dev, "Can't setup IRQ\n");
|
|
pci_enable_busmaster(dev);
|
|
/* Process cards detection. */
|
|
for (i = 0; i < sc->num_slots; i++) {
|
|
struct sdhci_slot *slot = &sc->slots[i];
|
|
|
|
sdhci_card_task(slot, 0);
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
sdhci_detach(device_t dev)
|
|
{
|
|
struct sdhci_softc *sc = device_get_softc(dev);
|
|
int i;
|
|
|
|
bus_teardown_intr(dev, sc->irq_res, sc->intrhand);
|
|
bus_release_resource(dev, SYS_RES_IRQ,
|
|
sc->irq_rid, sc->irq_res);
|
|
|
|
for (i = 0; i < sc->num_slots; i++) {
|
|
struct sdhci_slot *slot = &sc->slots[i];
|
|
device_t d;
|
|
|
|
callout_drain(&slot->card_callout);
|
|
taskqueue_drain(taskqueue_swi_giant, &slot->card_task);
|
|
|
|
SDHCI_LOCK(slot);
|
|
d = slot->dev;
|
|
slot->dev = NULL;
|
|
SDHCI_UNLOCK(slot);
|
|
if (d != NULL)
|
|
device_delete_child(dev, d);
|
|
|
|
SDHCI_LOCK(slot);
|
|
sdhci_reset(slot, SDHCI_RESET_ALL);
|
|
SDHCI_UNLOCK(slot);
|
|
bus_dmamap_unload(slot->dmatag, slot->dmamap);
|
|
bus_dmamem_free(slot->dmatag, slot->dmamem, slot->dmamap);
|
|
bus_dma_tag_destroy(slot->dmatag);
|
|
bus_release_resource(dev, SYS_RES_MEMORY,
|
|
slot->mem_rid, slot->mem_res);
|
|
SDHCI_LOCK_DESTROY(slot);
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
sdhci_suspend(device_t dev)
|
|
{
|
|
struct sdhci_softc *sc = device_get_softc(dev);
|
|
int i, err;
|
|
|
|
err = bus_generic_suspend(dev);
|
|
if (err)
|
|
return (err);
|
|
for (i = 0; i < sc->num_slots; i++)
|
|
sdhci_reset(&sc->slots[i], SDHCI_RESET_ALL);
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
sdhci_resume(device_t dev)
|
|
{
|
|
struct sdhci_softc *sc = device_get_softc(dev);
|
|
int i;
|
|
|
|
for (i = 0; i < sc->num_slots; i++)
|
|
sdhci_init(&sc->slots[i]);
|
|
return (bus_generic_resume(dev));
|
|
}
|
|
|
|
static int
|
|
sdhci_update_ios(device_t brdev, device_t reqdev)
|
|
{
|
|
struct sdhci_slot *slot = device_get_ivars(reqdev);
|
|
struct mmc_ios *ios = &slot->host.ios;
|
|
|
|
SDHCI_LOCK(slot);
|
|
/* Do full reset on bus power down to clear from any state. */
|
|
if (ios->power_mode == power_off) {
|
|
WR4(slot, SDHCI_SIGNAL_ENABLE, 0);
|
|
sdhci_init(slot);
|
|
}
|
|
/* Configure the bus. */
|
|
sdhci_set_clock(slot, ios->clock);
|
|
sdhci_set_power(slot, (ios->power_mode == power_off)?0:ios->vdd);
|
|
if (ios->bus_width == bus_width_4)
|
|
slot->hostctrl |= SDHCI_CTRL_4BITBUS;
|
|
else
|
|
slot->hostctrl &= ~SDHCI_CTRL_4BITBUS;
|
|
if (ios->timing == bus_timing_hs)
|
|
slot->hostctrl |= SDHCI_CTRL_HISPD;
|
|
else
|
|
slot->hostctrl &= ~SDHCI_CTRL_HISPD;
|
|
WR1(slot, SDHCI_HOST_CONTROL, slot->hostctrl);
|
|
/* Some controllers like reset after bus changes. */
|
|
if(slot->sc->quirks & SDHCI_QUIRK_RESET_ON_IOS)
|
|
sdhci_reset(slot, SDHCI_RESET_CMD | SDHCI_RESET_DATA);
|
|
|
|
SDHCI_UNLOCK(slot);
|
|
return (0);
|
|
}
|
|
|
|
static void
|
|
sdhci_set_transfer_mode(struct sdhci_slot *slot,
|
|
struct mmc_data *data)
|
|
{
|
|
uint16_t mode;
|
|
|
|
if (data == NULL)
|
|
return;
|
|
|
|
mode = SDHCI_TRNS_BLK_CNT_EN;
|
|
if (data->len > 512)
|
|
mode |= SDHCI_TRNS_MULTI;
|
|
if (data->flags & MMC_DATA_READ)
|
|
mode |= SDHCI_TRNS_READ;
|
|
if (slot->req->stop)
|
|
mode |= SDHCI_TRNS_ACMD12;
|
|
if (slot->flags & SDHCI_USE_DMA)
|
|
mode |= SDHCI_TRNS_DMA;
|
|
|
|
WR2(slot, SDHCI_TRANSFER_MODE, mode);
|
|
}
|
|
|
|
static void
|
|
sdhci_start_command(struct sdhci_slot *slot, struct mmc_command *cmd)
|
|
{
|
|
struct mmc_request *req = slot->req;
|
|
int flags, timeout;
|
|
uint32_t mask, state;
|
|
|
|
slot->curcmd = cmd;
|
|
slot->cmd_done = 0;
|
|
|
|
cmd->error = MMC_ERR_NONE;
|
|
|
|
/* This flags combination is not supported by controller. */
|
|
if ((cmd->flags & MMC_RSP_136) && (cmd->flags & MMC_RSP_BUSY)) {
|
|
slot_printf(slot, "Unsupported response type!\n");
|
|
cmd->error = MMC_ERR_FAILED;
|
|
slot->req = NULL;
|
|
slot->curcmd = NULL;
|
|
req->done(req);
|
|
return;
|
|
}
|
|
|
|
/* Read controller present state. */
|
|
state = RD4(slot, SDHCI_PRESENT_STATE);
|
|
/* Do not issue command if there is no card, clock or power.
|
|
* Controller will not detect timeout without clock active. */
|
|
if ((state & SDHCI_CARD_PRESENT) == 0 ||
|
|
slot->power == 0 ||
|
|
slot->clock == 0) {
|
|
cmd->error = MMC_ERR_FAILED;
|
|
slot->req = NULL;
|
|
slot->curcmd = NULL;
|
|
req->done(req);
|
|
return;
|
|
}
|
|
/* Always wait for free CMD bus. */
|
|
mask = SDHCI_CMD_INHIBIT;
|
|
/* Wait for free DAT if we have data or busy signal. */
|
|
if (cmd->data || (cmd->flags & MMC_RSP_BUSY))
|
|
mask |= SDHCI_DAT_INHIBIT;
|
|
/* We shouldn't wait for DAT for stop commands. */
|
|
if (cmd == slot->req->stop)
|
|
mask &= ~SDHCI_DAT_INHIBIT;
|
|
/* Wait for bus no more then 10 ms. */
|
|
timeout = 10;
|
|
while (state & mask) {
|
|
if (timeout == 0) {
|
|
slot_printf(slot, "Controller never released "
|
|
"inhibit bit(s).\n");
|
|
sdhci_dumpregs(slot);
|
|
cmd->error = MMC_ERR_FAILED;
|
|
slot->req = NULL;
|
|
slot->curcmd = NULL;
|
|
req->done(req);
|
|
return;
|
|
}
|
|
timeout--;
|
|
DELAY(1000);
|
|
state = RD4(slot, SDHCI_PRESENT_STATE);
|
|
}
|
|
|
|
/* Prepare command flags. */
|
|
if (!(cmd->flags & MMC_RSP_PRESENT))
|
|
flags = SDHCI_CMD_RESP_NONE;
|
|
else if (cmd->flags & MMC_RSP_136)
|
|
flags = SDHCI_CMD_RESP_LONG;
|
|
else if (cmd->flags & MMC_RSP_BUSY)
|
|
flags = SDHCI_CMD_RESP_SHORT_BUSY;
|
|
else
|
|
flags = SDHCI_CMD_RESP_SHORT;
|
|
if (cmd->flags & MMC_RSP_CRC)
|
|
flags |= SDHCI_CMD_CRC;
|
|
if (cmd->flags & MMC_RSP_OPCODE)
|
|
flags |= SDHCI_CMD_INDEX;
|
|
if (cmd->data)
|
|
flags |= SDHCI_CMD_DATA;
|
|
if (cmd->opcode == MMC_STOP_TRANSMISSION)
|
|
flags |= SDHCI_CMD_TYPE_ABORT;
|
|
/* Prepare data. */
|
|
sdhci_start_data(slot, cmd->data);
|
|
/*
|
|
* Interrupt aggregation: To reduce total number of interrupts
|
|
* group response interrupt with data interrupt when possible.
|
|
* If there going to be data interrupt, mask response one.
|
|
*/
|
|
if (slot->data_done == 0) {
|
|
WR4(slot, SDHCI_SIGNAL_ENABLE,
|
|
slot->intmask &= ~SDHCI_INT_RESPONSE);
|
|
}
|
|
/* Set command argument. */
|
|
WR4(slot, SDHCI_ARGUMENT, cmd->arg);
|
|
/* Set data transfer mode. */
|
|
sdhci_set_transfer_mode(slot, cmd->data);
|
|
/* Set command flags. */
|
|
WR1(slot, SDHCI_COMMAND_FLAGS, flags);
|
|
/* Start command. */
|
|
WR1(slot, SDHCI_COMMAND, cmd->opcode);
|
|
}
|
|
|
|
static void
|
|
sdhci_finish_command(struct sdhci_slot *slot)
|
|
{
|
|
int i;
|
|
|
|
slot->cmd_done = 1;
|
|
/* Interrupt aggregation: Restore command interrupt.
|
|
* Main restore point for the case when command interrupt
|
|
* happened first. */
|
|
WR4(slot, SDHCI_SIGNAL_ENABLE, slot->intmask |= SDHCI_INT_RESPONSE);
|
|
/* In case of error - reset host and return. */
|
|
if (slot->curcmd->error) {
|
|
sdhci_reset(slot, SDHCI_RESET_CMD);
|
|
sdhci_reset(slot, SDHCI_RESET_DATA);
|
|
sdhci_start(slot);
|
|
return;
|
|
}
|
|
/* If command has response - fetch it. */
|
|
if (slot->curcmd->flags & MMC_RSP_PRESENT) {
|
|
if (slot->curcmd->flags & MMC_RSP_136) {
|
|
/* CRC is stripped so we need one byte shift. */
|
|
uint8_t extra = 0;
|
|
for (i = 0; i < 4; i++) {
|
|
uint32_t val = RD4(slot, SDHCI_RESPONSE + i * 4);
|
|
slot->curcmd->resp[3 - i] = (val << 8) + extra;
|
|
extra = val >> 24;
|
|
}
|
|
} else
|
|
slot->curcmd->resp[0] = RD4(slot, SDHCI_RESPONSE);
|
|
}
|
|
/* If data ready - finish. */
|
|
if (slot->data_done)
|
|
sdhci_start(slot);
|
|
}
|
|
|
|
static void
|
|
sdhci_start_data(struct sdhci_slot *slot, struct mmc_data *data)
|
|
{
|
|
uint32_t target_timeout, current_timeout;
|
|
uint8_t div;
|
|
|
|
if (data == NULL && (slot->curcmd->flags & MMC_RSP_BUSY) == 0) {
|
|
slot->data_done = 1;
|
|
return;
|
|
}
|
|
|
|
slot->data_done = 0;
|
|
|
|
/* Calculate and set data timeout.*/
|
|
/* XXX: We should have this from mmc layer, now assume 1 sec. */
|
|
target_timeout = 1000000;
|
|
div = 0;
|
|
current_timeout = (1 << 13) * 1000 / slot->timeout_clk;
|
|
while (current_timeout < target_timeout) {
|
|
div++;
|
|
current_timeout <<= 1;
|
|
if (div >= 0xF)
|
|
break;
|
|
}
|
|
/* Compensate for an off-by-one error in the CaFe chip.*/
|
|
if (slot->sc->quirks & SDHCI_QUIRK_INCR_TIMEOUT_CONTROL)
|
|
div++;
|
|
if (div >= 0xF) {
|
|
slot_printf(slot, "Timeout too large!\n");
|
|
div = 0xE;
|
|
}
|
|
WR1(slot, SDHCI_TIMEOUT_CONTROL, div);
|
|
|
|
if (data == NULL)
|
|
return;
|
|
|
|
/* Use DMA if possible. */
|
|
if ((slot->opt & SDHCI_HAVE_DMA))
|
|
slot->flags |= SDHCI_USE_DMA;
|
|
/* If data is small, broken DMA may return zeroes instead of data, */
|
|
if ((slot->sc->quirks & SDHCI_QUIRK_BROKEN_TIMINGS) &&
|
|
(data->len <= 512))
|
|
slot->flags &= ~SDHCI_USE_DMA;
|
|
/* Some controllers require even block sizes. */
|
|
if ((slot->sc->quirks & SDHCI_QUIRK_32BIT_DMA_SIZE) &&
|
|
((data->len) & 0x3))
|
|
slot->flags &= ~SDHCI_USE_DMA;
|
|
/* Load DMA buffer. */
|
|
if (slot->flags & SDHCI_USE_DMA) {
|
|
if (data->flags & MMC_DATA_READ)
|
|
bus_dmamap_sync(slot->dmatag, slot->dmamap, BUS_DMASYNC_PREREAD);
|
|
else {
|
|
memcpy(slot->dmamem, data->data,
|
|
(data->len < DMA_BLOCK_SIZE)?data->len:DMA_BLOCK_SIZE);
|
|
bus_dmamap_sync(slot->dmatag, slot->dmamap, BUS_DMASYNC_PREWRITE);
|
|
}
|
|
WR4(slot, SDHCI_DMA_ADDRESS, slot->paddr);
|
|
/* Interrupt aggregation: Mask border interrupt
|
|
* for the last page and unmask else. */
|
|
if (data->len == DMA_BLOCK_SIZE)
|
|
slot->intmask &= ~SDHCI_INT_DMA_END;
|
|
else
|
|
slot->intmask |= SDHCI_INT_DMA_END;
|
|
WR4(slot, SDHCI_SIGNAL_ENABLE, slot->intmask);
|
|
}
|
|
/* Current data offset for both PIO and DMA. */
|
|
slot->offset = 0;
|
|
/* Set block size and request IRQ on 4K border. */
|
|
WR2(slot, SDHCI_BLOCK_SIZE,
|
|
SDHCI_MAKE_BLKSZ(DMA_BOUNDARY, (data->len < 512)?data->len:512));
|
|
/* Set block count. */
|
|
WR2(slot, SDHCI_BLOCK_COUNT, (data->len + 511) / 512);
|
|
}
|
|
|
|
static void
|
|
sdhci_finish_data(struct sdhci_slot *slot)
|
|
{
|
|
struct mmc_data *data = slot->curcmd->data;
|
|
|
|
slot->data_done = 1;
|
|
/* Interrupt aggregation: Restore command interrupt.
|
|
* Auxillary restore point for the case when data interrupt
|
|
* happened first. */
|
|
if (!slot->cmd_done) {
|
|
WR4(slot, SDHCI_SIGNAL_ENABLE,
|
|
slot->intmask |= SDHCI_INT_RESPONSE);
|
|
}
|
|
/* Unload rest of data from DMA buffer. */
|
|
if (slot->flags & SDHCI_USE_DMA) {
|
|
if (data->flags & MMC_DATA_READ) {
|
|
size_t left = data->len - slot->offset;
|
|
bus_dmamap_sync(slot->dmatag, slot->dmamap, BUS_DMASYNC_POSTREAD);
|
|
memcpy((u_char*)data->data + slot->offset, slot->dmamem,
|
|
(left < DMA_BLOCK_SIZE)?left:DMA_BLOCK_SIZE);
|
|
} else
|
|
bus_dmamap_sync(slot->dmatag, slot->dmamap, BUS_DMASYNC_POSTWRITE);
|
|
}
|
|
/* If there was error - reset the host. */
|
|
if (slot->curcmd->error) {
|
|
sdhci_reset(slot, SDHCI_RESET_CMD);
|
|
sdhci_reset(slot, SDHCI_RESET_DATA);
|
|
sdhci_start(slot);
|
|
return;
|
|
}
|
|
/* If we already have command response - finish. */
|
|
if (slot->cmd_done)
|
|
sdhci_start(slot);
|
|
}
|
|
|
|
static void
|
|
sdhci_start(struct sdhci_slot *slot)
|
|
{
|
|
struct mmc_request *req;
|
|
|
|
req = slot->req;
|
|
if (req == NULL)
|
|
return;
|
|
|
|
if (!(slot->flags & CMD_STARTED)) {
|
|
slot->flags |= CMD_STARTED;
|
|
sdhci_start_command(slot, req->cmd);
|
|
return;
|
|
}
|
|
/* We don't need this until using Auto-CMD12 feature
|
|
if (!(slot->flags & STOP_STARTED) && req->stop) {
|
|
slot->flags |= STOP_STARTED;
|
|
sdhci_start_command(slot, req->stop);
|
|
return;
|
|
}
|
|
*/
|
|
if (sdhci_debug > 1)
|
|
slot_printf(slot, "result: %d\n", req->cmd->error);
|
|
if (!req->cmd->error &&
|
|
(slot->sc->quirks & SDHCI_QUIRK_RESET_AFTER_REQUEST)) {
|
|
sdhci_reset(slot, SDHCI_RESET_CMD);
|
|
sdhci_reset(slot, SDHCI_RESET_DATA);
|
|
}
|
|
|
|
/* We must be done -- bad idea to do this while locked? */
|
|
slot->req = NULL;
|
|
slot->curcmd = NULL;
|
|
req->done(req);
|
|
}
|
|
|
|
static int
|
|
sdhci_request(device_t brdev, device_t reqdev, struct mmc_request *req)
|
|
{
|
|
struct sdhci_slot *slot = device_get_ivars(reqdev);
|
|
|
|
SDHCI_LOCK(slot);
|
|
if (slot->req != NULL) {
|
|
SDHCI_UNLOCK(slot);
|
|
return (EBUSY);
|
|
}
|
|
if (sdhci_debug > 1) {
|
|
slot_printf(slot, "CMD%u arg %#x flags %#x dlen %u dflags %#x\n",
|
|
req->cmd->opcode, req->cmd->arg, req->cmd->flags,
|
|
(req->cmd->data)?(u_int)req->cmd->data->len:0,
|
|
(req->cmd->data)?req->cmd->data->flags:0);
|
|
}
|
|
slot->req = req;
|
|
slot->flags = 0;
|
|
sdhci_start(slot);
|
|
SDHCI_UNLOCK(slot);
|
|
if (dumping) {
|
|
while (slot->req != NULL) {
|
|
sdhci_intr(slot->sc);
|
|
DELAY(10);
|
|
}
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
sdhci_get_ro(device_t brdev, device_t reqdev)
|
|
{
|
|
struct sdhci_slot *slot = device_get_ivars(reqdev);
|
|
uint32_t val;
|
|
|
|
SDHCI_LOCK(slot);
|
|
val = RD4(slot, SDHCI_PRESENT_STATE);
|
|
SDHCI_UNLOCK(slot);
|
|
return (!(val & SDHCI_WRITE_PROTECT));
|
|
}
|
|
|
|
static int
|
|
sdhci_acquire_host(device_t brdev, device_t reqdev)
|
|
{
|
|
struct sdhci_slot *slot = device_get_ivars(reqdev);
|
|
int err = 0;
|
|
|
|
SDHCI_LOCK(slot);
|
|
while (slot->bus_busy)
|
|
msleep(slot, &slot->mtx, 0, "sdhciah", 0);
|
|
slot->bus_busy++;
|
|
/* Activate led. */
|
|
WR1(slot, SDHCI_HOST_CONTROL, slot->hostctrl |= SDHCI_CTRL_LED);
|
|
SDHCI_UNLOCK(slot);
|
|
return (err);
|
|
}
|
|
|
|
static int
|
|
sdhci_release_host(device_t brdev, device_t reqdev)
|
|
{
|
|
struct sdhci_slot *slot = device_get_ivars(reqdev);
|
|
|
|
SDHCI_LOCK(slot);
|
|
/* Deactivate led. */
|
|
WR1(slot, SDHCI_HOST_CONTROL, slot->hostctrl &= ~SDHCI_CTRL_LED);
|
|
slot->bus_busy--;
|
|
SDHCI_UNLOCK(slot);
|
|
wakeup(slot);
|
|
return (0);
|
|
}
|
|
|
|
static void
|
|
sdhci_cmd_irq(struct sdhci_slot *slot, uint32_t intmask)
|
|
{
|
|
|
|
if (!slot->curcmd) {
|
|
slot_printf(slot, "Got command interrupt 0x%08x, but "
|
|
"there is no active command.\n", intmask);
|
|
sdhci_dumpregs(slot);
|
|
return;
|
|
}
|
|
if (intmask & SDHCI_INT_TIMEOUT)
|
|
slot->curcmd->error = MMC_ERR_TIMEOUT;
|
|
else if (intmask & SDHCI_INT_CRC)
|
|
slot->curcmd->error = MMC_ERR_BADCRC;
|
|
else if (intmask & (SDHCI_INT_END_BIT | SDHCI_INT_INDEX))
|
|
slot->curcmd->error = MMC_ERR_FIFO;
|
|
|
|
sdhci_finish_command(slot);
|
|
}
|
|
|
|
static void
|
|
sdhci_data_irq(struct sdhci_slot *slot, uint32_t intmask)
|
|
{
|
|
|
|
if (!slot->curcmd) {
|
|
slot_printf(slot, "Got data interrupt 0x%08x, but "
|
|
"there is no active command.\n", intmask);
|
|
sdhci_dumpregs(slot);
|
|
return;
|
|
}
|
|
if (slot->curcmd->data == NULL &&
|
|
(slot->curcmd->flags & MMC_RSP_BUSY) == 0) {
|
|
slot_printf(slot, "Got data interrupt 0x%08x, but "
|
|
"there is no active data operation.\n",
|
|
intmask);
|
|
sdhci_dumpregs(slot);
|
|
return;
|
|
}
|
|
if (intmask & SDHCI_INT_DATA_TIMEOUT)
|
|
slot->curcmd->error = MMC_ERR_TIMEOUT;
|
|
else if (intmask & (SDHCI_INT_DATA_CRC | SDHCI_INT_DATA_END_BIT))
|
|
slot->curcmd->error = MMC_ERR_BADCRC;
|
|
if (slot->curcmd->data == NULL &&
|
|
(intmask & (SDHCI_INT_DATA_AVAIL | SDHCI_INT_SPACE_AVAIL |
|
|
SDHCI_INT_DMA_END))) {
|
|
slot_printf(slot, "Got data interrupt 0x%08x, but "
|
|
"there is busy-only command.\n", intmask);
|
|
sdhci_dumpregs(slot);
|
|
slot->curcmd->error = MMC_ERR_INVALID;
|
|
}
|
|
if (slot->curcmd->error) {
|
|
/* No need to continue after any error. */
|
|
sdhci_finish_data(slot);
|
|
return;
|
|
}
|
|
|
|
/* Handle PIO interrupt. */
|
|
if (intmask & (SDHCI_INT_DATA_AVAIL | SDHCI_INT_SPACE_AVAIL))
|
|
sdhci_transfer_pio(slot);
|
|
/* Handle DMA border. */
|
|
if (intmask & SDHCI_INT_DMA_END) {
|
|
struct mmc_data *data = slot->curcmd->data;
|
|
size_t left;
|
|
|
|
/* Unload DMA buffer... */
|
|
left = data->len - slot->offset;
|
|
if (data->flags & MMC_DATA_READ) {
|
|
bus_dmamap_sync(slot->dmatag, slot->dmamap,
|
|
BUS_DMASYNC_POSTREAD);
|
|
memcpy((u_char*)data->data + slot->offset, slot->dmamem,
|
|
(left < DMA_BLOCK_SIZE)?left:DMA_BLOCK_SIZE);
|
|
} else {
|
|
bus_dmamap_sync(slot->dmatag, slot->dmamap,
|
|
BUS_DMASYNC_POSTWRITE);
|
|
}
|
|
/* ... and reload it again. */
|
|
slot->offset += DMA_BLOCK_SIZE;
|
|
left = data->len - slot->offset;
|
|
if (data->flags & MMC_DATA_READ) {
|
|
bus_dmamap_sync(slot->dmatag, slot->dmamap,
|
|
BUS_DMASYNC_PREREAD);
|
|
} else {
|
|
memcpy(slot->dmamem, (u_char*)data->data + slot->offset,
|
|
(left < DMA_BLOCK_SIZE)?left:DMA_BLOCK_SIZE);
|
|
bus_dmamap_sync(slot->dmatag, slot->dmamap,
|
|
BUS_DMASYNC_PREWRITE);
|
|
}
|
|
/* Interrupt aggregation: Mask border interrupt
|
|
* for the last page. */
|
|
if (left == DMA_BLOCK_SIZE) {
|
|
slot->intmask &= ~SDHCI_INT_DMA_END;
|
|
WR4(slot, SDHCI_SIGNAL_ENABLE, slot->intmask);
|
|
}
|
|
/* Restart DMA. */
|
|
WR4(slot, SDHCI_DMA_ADDRESS, slot->paddr);
|
|
}
|
|
/* We have got all data. */
|
|
if (intmask & SDHCI_INT_DATA_END)
|
|
sdhci_finish_data(slot);
|
|
}
|
|
|
|
static void
|
|
sdhci_acmd_irq(struct sdhci_slot *slot)
|
|
{
|
|
uint16_t err;
|
|
|
|
err = RD4(slot, SDHCI_ACMD12_ERR);
|
|
if (!slot->curcmd) {
|
|
slot_printf(slot, "Got AutoCMD12 error 0x%04x, but "
|
|
"there is no active command.\n", err);
|
|
sdhci_dumpregs(slot);
|
|
return;
|
|
}
|
|
slot_printf(slot, "Got AutoCMD12 error 0x%04x\n", err);
|
|
sdhci_reset(slot, SDHCI_RESET_CMD);
|
|
}
|
|
|
|
static void
|
|
sdhci_intr(void *arg)
|
|
{
|
|
struct sdhci_softc *sc = (struct sdhci_softc *)arg;
|
|
int i;
|
|
|
|
for (i = 0; i < sc->num_slots; i++) {
|
|
struct sdhci_slot *slot = &sc->slots[i];
|
|
uint32_t intmask;
|
|
|
|
SDHCI_LOCK(slot);
|
|
/* Read slot interrupt status. */
|
|
intmask = RD4(slot, SDHCI_INT_STATUS);
|
|
if (intmask == 0 || intmask == 0xffffffff) {
|
|
SDHCI_UNLOCK(slot);
|
|
continue;
|
|
}
|
|
if (sdhci_debug > 2)
|
|
slot_printf(slot, "Interrupt %#x\n", intmask);
|
|
|
|
/* Handle card presence interrupts. */
|
|
if (intmask & (SDHCI_INT_CARD_INSERT | SDHCI_INT_CARD_REMOVE)) {
|
|
WR4(slot, SDHCI_INT_STATUS, intmask &
|
|
(SDHCI_INT_CARD_INSERT | SDHCI_INT_CARD_REMOVE));
|
|
|
|
if (intmask & SDHCI_INT_CARD_REMOVE) {
|
|
if (bootverbose || sdhci_debug)
|
|
slot_printf(slot, "Card removed\n");
|
|
callout_stop(&slot->card_callout);
|
|
taskqueue_enqueue(taskqueue_swi_giant,
|
|
&slot->card_task);
|
|
}
|
|
if (intmask & SDHCI_INT_CARD_INSERT) {
|
|
if (bootverbose || sdhci_debug)
|
|
slot_printf(slot, "Card inserted\n");
|
|
callout_reset(&slot->card_callout, hz / 2,
|
|
sdhci_card_delay, slot);
|
|
}
|
|
intmask &= ~(SDHCI_INT_CARD_INSERT | SDHCI_INT_CARD_REMOVE);
|
|
}
|
|
/* Handle command interrupts. */
|
|
if (intmask & SDHCI_INT_CMD_MASK) {
|
|
WR4(slot, SDHCI_INT_STATUS, intmask & SDHCI_INT_CMD_MASK);
|
|
sdhci_cmd_irq(slot, intmask & SDHCI_INT_CMD_MASK);
|
|
}
|
|
/* Handle data interrupts. */
|
|
if (intmask & SDHCI_INT_DATA_MASK) {
|
|
WR4(slot, SDHCI_INT_STATUS, intmask & SDHCI_INT_DATA_MASK);
|
|
sdhci_data_irq(slot, intmask & SDHCI_INT_DATA_MASK);
|
|
}
|
|
/* Handle AutoCMD12 error interrupt. */
|
|
if (intmask & SDHCI_INT_ACMD12ERR) {
|
|
WR4(slot, SDHCI_INT_STATUS, SDHCI_INT_ACMD12ERR);
|
|
sdhci_acmd_irq(slot);
|
|
}
|
|
intmask &= ~(SDHCI_INT_CMD_MASK | SDHCI_INT_DATA_MASK);
|
|
intmask &= ~SDHCI_INT_ACMD12ERR;
|
|
intmask &= ~SDHCI_INT_ERROR;
|
|
/* Handle bus power interrupt. */
|
|
if (intmask & SDHCI_INT_BUS_POWER) {
|
|
WR4(slot, SDHCI_INT_STATUS, SDHCI_INT_BUS_POWER);
|
|
slot_printf(slot,
|
|
"Card is consuming too much power!\n");
|
|
intmask &= ~SDHCI_INT_BUS_POWER;
|
|
}
|
|
/* The rest is unknown. */
|
|
if (intmask) {
|
|
WR4(slot, SDHCI_INT_STATUS, intmask);
|
|
slot_printf(slot, "Unexpected interrupt 0x%08x.\n",
|
|
intmask);
|
|
sdhci_dumpregs(slot);
|
|
}
|
|
|
|
SDHCI_UNLOCK(slot);
|
|
}
|
|
}
|
|
|
|
static int
|
|
sdhci_read_ivar(device_t bus, device_t child, int which, uintptr_t *result)
|
|
{
|
|
struct sdhci_slot *slot = device_get_ivars(child);
|
|
|
|
switch (which) {
|
|
default:
|
|
return (EINVAL);
|
|
case MMCBR_IVAR_BUS_MODE:
|
|
*result = slot->host.ios.bus_mode;
|
|
break;
|
|
case MMCBR_IVAR_BUS_WIDTH:
|
|
*result = slot->host.ios.bus_width;
|
|
break;
|
|
case MMCBR_IVAR_CHIP_SELECT:
|
|
*result = slot->host.ios.chip_select;
|
|
break;
|
|
case MMCBR_IVAR_CLOCK:
|
|
*result = slot->host.ios.clock;
|
|
break;
|
|
case MMCBR_IVAR_F_MIN:
|
|
*result = slot->host.f_min;
|
|
break;
|
|
case MMCBR_IVAR_F_MAX:
|
|
*result = slot->host.f_max;
|
|
break;
|
|
case MMCBR_IVAR_HOST_OCR:
|
|
*result = slot->host.host_ocr;
|
|
break;
|
|
case MMCBR_IVAR_MODE:
|
|
*result = slot->host.mode;
|
|
break;
|
|
case MMCBR_IVAR_OCR:
|
|
*result = slot->host.ocr;
|
|
break;
|
|
case MMCBR_IVAR_POWER_MODE:
|
|
*result = slot->host.ios.power_mode;
|
|
break;
|
|
case MMCBR_IVAR_VDD:
|
|
*result = slot->host.ios.vdd;
|
|
break;
|
|
case MMCBR_IVAR_CAPS:
|
|
*result = slot->host.caps;
|
|
break;
|
|
case MMCBR_IVAR_TIMING:
|
|
*result = slot->host.ios.timing;
|
|
break;
|
|
case MMCBR_IVAR_MAX_DATA:
|
|
*result = 65535;
|
|
break;
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
sdhci_write_ivar(device_t bus, device_t child, int which, uintptr_t value)
|
|
{
|
|
struct sdhci_slot *slot = device_get_ivars(child);
|
|
|
|
switch (which) {
|
|
default:
|
|
return (EINVAL);
|
|
case MMCBR_IVAR_BUS_MODE:
|
|
slot->host.ios.bus_mode = value;
|
|
break;
|
|
case MMCBR_IVAR_BUS_WIDTH:
|
|
slot->host.ios.bus_width = value;
|
|
break;
|
|
case MMCBR_IVAR_CHIP_SELECT:
|
|
slot->host.ios.chip_select = value;
|
|
break;
|
|
case MMCBR_IVAR_CLOCK:
|
|
if (value > 0) {
|
|
uint32_t clock = slot->max_clk;
|
|
int i;
|
|
|
|
for (i = 0; i < 8; i++) {
|
|
if (clock <= value)
|
|
break;
|
|
clock >>= 1;
|
|
}
|
|
slot->host.ios.clock = clock;
|
|
} else
|
|
slot->host.ios.clock = 0;
|
|
break;
|
|
case MMCBR_IVAR_MODE:
|
|
slot->host.mode = value;
|
|
break;
|
|
case MMCBR_IVAR_OCR:
|
|
slot->host.ocr = value;
|
|
break;
|
|
case MMCBR_IVAR_POWER_MODE:
|
|
slot->host.ios.power_mode = value;
|
|
break;
|
|
case MMCBR_IVAR_VDD:
|
|
slot->host.ios.vdd = value;
|
|
break;
|
|
case MMCBR_IVAR_TIMING:
|
|
slot->host.ios.timing = value;
|
|
break;
|
|
case MMCBR_IVAR_CAPS:
|
|
case MMCBR_IVAR_HOST_OCR:
|
|
case MMCBR_IVAR_F_MIN:
|
|
case MMCBR_IVAR_F_MAX:
|
|
case MMCBR_IVAR_MAX_DATA:
|
|
return (EINVAL);
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
static device_method_t sdhci_methods[] = {
|
|
/* device_if */
|
|
DEVMETHOD(device_probe, sdhci_probe),
|
|
DEVMETHOD(device_attach, sdhci_attach),
|
|
DEVMETHOD(device_detach, sdhci_detach),
|
|
DEVMETHOD(device_suspend, sdhci_suspend),
|
|
DEVMETHOD(device_resume, sdhci_resume),
|
|
|
|
/* Bus interface */
|
|
DEVMETHOD(bus_read_ivar, sdhci_read_ivar),
|
|
DEVMETHOD(bus_write_ivar, sdhci_write_ivar),
|
|
|
|
/* mmcbr_if */
|
|
DEVMETHOD(mmcbr_update_ios, sdhci_update_ios),
|
|
DEVMETHOD(mmcbr_request, sdhci_request),
|
|
DEVMETHOD(mmcbr_get_ro, sdhci_get_ro),
|
|
DEVMETHOD(mmcbr_acquire_host, sdhci_acquire_host),
|
|
DEVMETHOD(mmcbr_release_host, sdhci_release_host),
|
|
|
|
{0, 0},
|
|
};
|
|
|
|
static driver_t sdhci_driver = {
|
|
"sdhci",
|
|
sdhci_methods,
|
|
sizeof(struct sdhci_softc),
|
|
};
|
|
static devclass_t sdhci_devclass;
|
|
|
|
|
|
DRIVER_MODULE(sdhci, pci, sdhci_driver, sdhci_devclass, 0, 0);
|