9cd6ae99b7
https://source.android.com/docs/security/bulletin/2023-11-01 * tag 'ASB-2023-11-05_4.19-stable' of https://android.googlesource.com/kernel/common: Reapply "perf: Disallow mis-matched inherited group reads" Revert "perf: Disallow mis-matched inherited group reads" Revert "xfrm: fix a data-race in xfrm_gen_index()" Revert "Bluetooth: hci_core: Fix build warnings" Revert "xfrm: interface: use DEV_STATS_INC()" Linux 4.19.297 xfrm6: fix inet6_dev refcount underflow problem Bluetooth: hci_sock: Correctly bounds check and pad HCI_MON_NEW_INDEX name Bluetooth: hci_sock: fix slab oob read in create_monitor_event phy: mapphone-mdm6600: Fix runtime PM for remove ASoC: pxa: fix a memory leak in probe() gpio: vf610: set value before the direction to avoid a glitch s390/pci: fix iommu bitmap allocation perf: Disallow mis-matched inherited group reads USB: serial: option: add Fibocom to DELL custom modem FM101R-GL USB: serial: option: add entry for Sierra EM9191 with new firmware USB: serial: option: add Telit LE910C4-WWX 0x1035 composition ACPI: irq: Fix incorrect return value in acpi_register_gsi() Revert "pinctrl: avoid unsafe code pattern in find_pinctrl()" mmc: core: Capture correct oemid-bits for eMMC cards mtd: spinand: micron: correct bitmask for ecc status mtd: rawnand: qcom: Unmap the right resource upon probe failure Bluetooth: hci_event: Fix using memcmp when comparing keys btrfs: fix some -Wmaybe-uninitialized warnings in ioctl.c drm: panel-orientation-quirks: Add quirk for One Mix 2S sky2: Make sure there is at least one frag_addr available wifi: cfg80211: avoid leaking stack data into trace wifi: mac80211: allow transmitting EAPOL frames with tainted key Bluetooth: hci_core: Fix build warnings Bluetooth: Avoid redundant authentication HID: holtek: fix slab-out-of-bounds Write in holtek_kbd_input_event tracing: relax trace_event_eval_update() execution with cond_resched() ata: libata-eh: Fix compilation warning in ata_eh_link_report() gpio: timberdale: Fix potential deadlock on &tgpio->lock overlayfs: set ctime when setting mtime and atime i2c: mux: Avoid potential false error message in i2c_mux_add_adapter btrfs: initialize start_slot in btrfs_log_prealloc_extents btrfs: return -EUCLEAN for delayed tree ref with a ref count not equals to 1 ARM: dts: ti: omap: Fix noisy serial with overrun-throttle-ms for mapphone libceph: use kernel_connect() libceph: fix unaligned accesses in ceph_entity_addr handling net: pktgen: Fix interface flags printing netfilter: nft_set_rbtree: .deactivate fails if element has expired net/sched: sch_hfsc: upgrade 'rt' to 'sc' when it becomes a inner curve i40e: prevent crash on probe if hw registers have invalid values net: usb: smsc95xx: Fix an error code in smsc95xx_reset() tcp: tsq: relax tcp_small_queue_check() when rtx queue contains a single skb tcp: fix excessive TLP and RACK timeouts from HZ rounding net: rfkill: gpio: prevent value glitch during probe net: ipv6: fix return value check in esp_remove_trailer net: ipv4: fix return value check in esp_remove_trailer xfrm: interface: use DEV_STATS_INC() xfrm: fix a data-race in xfrm_gen_index() netfilter: nft_payload: fix wrong mac header matching KVM: x86: Mask LVTPC when handling a PMI regmap: fix NULL deref on lookup nfc: nci: fix possible NULL pointer dereference in send_acknowledge() Bluetooth: avoid memcmp() out of bounds warning Bluetooth: hci_event: Fix coding style Bluetooth: vhci: Fix race when opening vhci device Bluetooth: Fix a refcnt underflow problem for hci_conn Bluetooth: Reject connection with the device which has same BD_ADDR Bluetooth: hci_event: Ignore NULL link key usb: hub: Guard against accesses to uninitialized BOS descriptors dev_forward_skb: do not scrub skb mark within the same name space x86/alternatives: Disable KASAN in apply_alternatives() powerpc/64e: Fix wrong test in __ptep_test_and_clear_young() usb: gadget: ncm: Handle decoding of multiple NTB's in unwrap call usb: gadget: udc-xilinx: replace memcpy with memcpy_toio x86/cpu: Fix AMD erratum #1485 on Zen4-based CPUs pinctrl: avoid unsafe code pattern in find_pinctrl() cgroup: Remove duplicates in cgroup v1 tasks file Input: xpad - add PXN V900 support Input: psmouse - fix fast_reconnect function for PS/2 mode Input: powermate - fix use-after-free in powermate_config_complete ceph: fix incorrect revoked caps assert in ceph_fill_file_size() mcb: remove is_added flag from mcb_device struct iio: pressure: ms5611: ms5611_prom_is_valid false negative bug iio: pressure: bmp280: Fix NULL pointer exception usb: musb: Modify the "HWVers" register address usb: musb: Get the musb_qh poniter after musb_giveback usb: dwc3: Soft reset phy on probe for host net: usb: dm9601: fix uninitialized variable use in dm9601_mdio_read usb: xhci: xhci-ring: Use sysdev for mapping bounce buffer dmaengine: stm32-mdma: abort resume if no ongoing transfer sched,idle,rcu: Push rcu_idle deeper into the idle path workqueue: Override implicit ordered attribute in workqueue_apply_unbound_cpumask() nfc: nci: assert requested protocol is valid net: nfc: fix races in nfc_llcp_sock_get() and nfc_llcp_sock_get_sn() ixgbe: fix crash with empty VF macvlan list drm/vmwgfx: fix typo of sizeof argument xen-netback: use default TX queue size for vifs ieee802154: ca8210: Fix a potential UAF in ca8210_probe drm/msm/dsi: skip the wait for video mode done if not applicable drm: etvnaviv: fix bad backport leading to warning net: prevent address rewrite in kernel_bind() quota: Fix slow quotaoff HID: logitech-hidpp: Fix kernel crash on receiver USB disconnect RDMA/cxgb4: Check skb value for failure to allocate net: prevent rewrite of msg_name in sock_sendmsg() net: fix kernel-doc warnings for socket.c net: use indirect calls helpers at the socket layer indirect call wrappers: helpers to speed-up indirect calls of builtin Revert "net: add atomic_long_t to net_device_stats fields" Revert "net: Fix unwanted sign extension in netdev_stats_to_stats64()" Revert "net: bridge: use DEV_STATS_INC()" Linux 4.19.296 xen/events: replace evtchn_rwlock with RCU rtnetlink: Reject negative ifindexes in RTM_NEWLINK Revert "rtnetlink: Reject negative ifindexes in RTM_NEWLINK" dccp: fix dccp_v4_err()/dccp_v6_err() again parisc: Restore __ldcw_align for PA-RISC 2.0 processors RDMA/mlx5: Fix NULL string error RDMA/cma: Fix truncation compilation warning in make_cma_ports gpio: pxa: disable pinctrl calls for MMP_GPIO gpio: aspeed: fix the GPIO number passed to pinctrl_gpio_set_config() IB/mlx4: Fix the size of a buffer in add_port_entries() cpupower: add Makefile dependencies for install targets sctp: update hb timer immediately after users change hb_interval sctp: update transport state when processing a dupcook packet tcp: fix delayed ACKs for MSS boundary condition tcp: fix quick-ack counting to count actual ACKs of new data net: stmmac: dwmac-stm32: fix resume on STM32 MCU net: usb: smsc75xx: Fix uninit-value access in __smsc75xx_read_reg ipv4, ipv6: Fix handling of transhdrlen in __ip{,6}_append_data() modpost: add missing else to the "of" check scsi: target: core: Fix deadlock due to recursive locking regmap: rbtree: Fix wrong register marked as in-cache when creating new node drivers/net: process the result of hdlc_open() and add call of hdlc_close() in uhdlc_close() wifi: mwifiex: Fix oob check condition in mwifiex_process_rx_packet ubi: Refuse attaching if mtd's erasesize is 0 net: replace calls to sock->ops->connect() with kernel_connect() wifi: mwifiex: Fix tlv_buf_left calculation qed/red_ll2: Fix undefined behavior bug in struct qed_ll2_info scsi: zfcp: Fix a double put in zfcp_port_enqueue() Revert "PCI: qcom: Disable write access to read only registers for IP v2.3.3" media: dvb: symbol fixup for dvb_attach() - again Revert "drivers core: Use sysfs_emit and sysfs_emit_at for show(device *...) functions" ata: libata: disallow dev-initiated LPM transitions to unsupported states ext4: fix rec_len verify error fs: binfmt_elf_efpic: fix personality for ELF-FDPIC ata: libata-sata: increase PMP SRST timeout to 10s ata: libata-core: Do not register PM operations for SAS ports ata: libata-core: Fix port and device removal ata: libata-core: Fix ata_port_request_pm() locking net: thunderbolt: Fix TCPv6 GSO checksum calculation btrfs: properly report 0 avail for very full file systems i2c: i801: unregister tco_pdev in i801_probe() error path ata: libata-scsi: ignore reserved bits for REPORT SUPPORTED OPERATION CODES ALSA: hda: Disable power save for solving pop issue on Lenovo ThinkCentre M70q nilfs2: fix potential use after free in nilfs_gccache_submit_read_data() serial: 8250_port: Check IRQ data before use smack: Record transmuting in smk_transmuted smack: Retrieve transmuting information in smack_inode_getsecurity() Smack:- Use overlay inode label in smack_inode_copy_up() scsi: megaraid_sas: Enable msix_load_balance for Invader and later controllers net: Fix unwanted sign extension in netdev_stats_to_stats64() watchdog: iTCO_wdt: Set NO_REBOOT if the watchdog is not already running watchdog: iTCO_wdt: No need to stop the timer in probe nvme-pci: do not set the NUMA node of device if it has none fbdev/sh7760fb: Depend on FB=y bpf: Clarify error expectations from bpf_clone_redirect ata: libata-eh: do not clear ATA_PFLAG_EH_PENDING in ata_eh_reset() ring-buffer: Avoid softlockup in ring_buffer_resize() selftests/ftrace: Correctly enable event in instance-event.tc parisc: irq: Make irq_stack_union static to avoid sparse warning parisc: drivers: Fix sparse warning parisc: iosapic.c: Fix sparse warnings parisc: sba: Fix compile warning wrt list of SBA devices gpio: pmic-eic-sprd: Add can_sleep flag for PMIC EIC chip ARM: dts: ti: omap: motorola-mapphone: Fix abe_clkctrl warning on boot clk: tegra: fix error return case for recalc_rate MIPS: Alchemy: only build mmc support helpers if au1xmmc is enabled ext4: do not let fstrim block system suspend ext4: move setting of trimmed bit into ext4_try_to_trim_range() ext4: replace the traditional ternary conditional operator with with max()/min() ext4: mark group as trimmed only if it was fully scanned ext4: change s_last_trim_minblks type to unsigned long ext4: scope ret locally in ext4_try_to_trim_range() ext4: add new helper interface ext4_try_to_trim_range() ext4: remove the 'group' parameter of ext4_trim_extent scsi: megaraid_sas: Fix deadlock on firmware crashdump scsi: megaraid_sas: Load balance completions across all MSI-X scsi: qla2xxx: Remove unsupported ql2xenabledif option scsi: qla2xxx: Add protection mask module parameters Input: i8042 - add quirk for TUXEDO Gemini 17 Gen1/Clevo PD70PN i2c: mux: demux-pinctrl: check the return value of devm_kstrdup() gpio: tb10x: Fix an error handling path in tb10x_gpio_probe() team: fix null-ptr-deref when team device type is changed net: bridge: use DEV_STATS_INC() net: add atomic_long_t to net_device_stats fields net: hns3: add 5ms delay before clear firmware reset irq source powerpc/perf/hv-24x7: Update domain value check ipv4: fix null-deref in ipv4_link_failure selftests: tls: swap the TX and RX sockets in some tests selftests/tls: Add {} to avoid static checker warning netfilter: nf_tables: disallow element removal on anonymous sets ata: libahci: clear pending interrupt status ata: ahci: Drop pointless VPRINTK() calls and convert the remaining ones NFS/pNFS: Report EINVAL errors from connect() to the server ANDROID: ALSA: jack: Revert mismerge done in v4.19.291 Conflicts: include/net/tcp.h kernel/events/core.c kernel/sched/idle.c Change-Id: I141cc494dcfda5fbd11f8bd2f7166bf3bf157084
3054 lines
81 KiB
C
3054 lines
81 KiB
C
/*
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* linux/drivers/mmc/core/mmc.c
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*
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* Copyright (C) 2003-2004 Russell King, All Rights Reserved.
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* Copyright (C) 2005-2007 Pierre Ossman, All Rights Reserved.
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* MMCv4 support Copyright (C) 2006 Philip Langdale, All Rights Reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/err.h>
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#include <linux/of.h>
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#include <linux/slab.h>
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#include <linux/stat.h>
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#include <linux/pm_runtime.h>
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#include <linux/mmc/host.h>
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#include <linux/mmc/card.h>
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#include <linux/mmc/mmc.h>
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#include <linux/reboot.h>
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#include <trace/events/mmc.h>
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#include "core.h"
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#include "card.h"
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#include "host.h"
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#include "bus.h"
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#include "mmc_ops.h"
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#include "quirks.h"
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#include "sd_ops.h"
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#include "pwrseq.h"
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#define DEFAULT_CMD6_TIMEOUT_MS 500
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#define MIN_CACHE_EN_TIMEOUT_MS 1600
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static const unsigned int tran_exp[] = {
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10000, 100000, 1000000, 10000000,
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0, 0, 0, 0
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};
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static const unsigned char tran_mant[] = {
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0, 10, 12, 13, 15, 20, 25, 30,
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35, 40, 45, 50, 55, 60, 70, 80,
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};
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static const unsigned int taac_exp[] = {
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1, 10, 100, 1000, 10000, 100000, 1000000, 10000000,
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};
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static const unsigned int taac_mant[] = {
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0, 10, 12, 13, 15, 20, 25, 30,
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35, 40, 45, 50, 55, 60, 70, 80,
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};
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#define UNSTUFF_BITS(resp,start,size) \
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({ \
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const int __size = size; \
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const u32 __mask = (__size < 32 ? 1 << __size : 0) - 1; \
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const int __off = 3 - ((start) / 32); \
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const int __shft = (start) & 31; \
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u32 __res; \
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\
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__res = resp[__off] >> __shft; \
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if (__size + __shft > 32) \
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__res |= resp[__off-1] << ((32 - __shft) % 32); \
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__res & __mask; \
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})
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/*
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* Given the decoded CSD structure, decode the raw CID to our CID structure.
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*/
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static int mmc_decode_cid(struct mmc_card *card)
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{
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u32 *resp = card->raw_cid;
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/*
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* The selection of the format here is based upon published
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* specs from sandisk and from what people have reported.
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*/
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switch (card->csd.mmca_vsn) {
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case 0: /* MMC v1.0 - v1.2 */
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case 1: /* MMC v1.4 */
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card->cid.manfid = UNSTUFF_BITS(resp, 104, 24);
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card->cid.prod_name[0] = UNSTUFF_BITS(resp, 96, 8);
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card->cid.prod_name[1] = UNSTUFF_BITS(resp, 88, 8);
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card->cid.prod_name[2] = UNSTUFF_BITS(resp, 80, 8);
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card->cid.prod_name[3] = UNSTUFF_BITS(resp, 72, 8);
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card->cid.prod_name[4] = UNSTUFF_BITS(resp, 64, 8);
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card->cid.prod_name[5] = UNSTUFF_BITS(resp, 56, 8);
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card->cid.prod_name[6] = UNSTUFF_BITS(resp, 48, 8);
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card->cid.hwrev = UNSTUFF_BITS(resp, 44, 4);
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card->cid.fwrev = UNSTUFF_BITS(resp, 40, 4);
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card->cid.serial = UNSTUFF_BITS(resp, 16, 24);
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card->cid.month = UNSTUFF_BITS(resp, 12, 4);
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card->cid.year = UNSTUFF_BITS(resp, 8, 4) + 1997;
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break;
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case 2: /* MMC v2.0 - v2.2 */
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case 3: /* MMC v3.1 - v3.3 */
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case 4: /* MMC v4 */
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card->cid.manfid = UNSTUFF_BITS(resp, 120, 8);
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card->cid.oemid = UNSTUFF_BITS(resp, 104, 8);
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card->cid.prod_name[0] = UNSTUFF_BITS(resp, 96, 8);
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card->cid.prod_name[1] = UNSTUFF_BITS(resp, 88, 8);
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card->cid.prod_name[2] = UNSTUFF_BITS(resp, 80, 8);
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card->cid.prod_name[3] = UNSTUFF_BITS(resp, 72, 8);
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card->cid.prod_name[4] = UNSTUFF_BITS(resp, 64, 8);
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card->cid.prod_name[5] = UNSTUFF_BITS(resp, 56, 8);
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card->cid.prv = UNSTUFF_BITS(resp, 48, 8);
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card->cid.serial = UNSTUFF_BITS(resp, 16, 32);
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card->cid.month = UNSTUFF_BITS(resp, 12, 4);
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card->cid.year = UNSTUFF_BITS(resp, 8, 4) + 1997;
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break;
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default:
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pr_err("%s: card has unknown MMCA version %d\n",
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mmc_hostname(card->host), card->csd.mmca_vsn);
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return -EINVAL;
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}
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return 0;
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}
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static void mmc_set_erase_size(struct mmc_card *card)
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{
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if (card->ext_csd.erase_group_def & 1)
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card->erase_size = card->ext_csd.hc_erase_size;
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else
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card->erase_size = card->csd.erase_size;
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mmc_init_erase(card);
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}
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/*
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* Given a 128-bit response, decode to our card CSD structure.
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*/
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static int mmc_decode_csd(struct mmc_card *card)
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{
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struct mmc_csd *csd = &card->csd;
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unsigned int e, m, a, b;
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u32 *resp = card->raw_csd;
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/*
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* We only understand CSD structure v1.1 and v1.2.
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* v1.2 has extra information in bits 15, 11 and 10.
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* We also support eMMC v4.4 & v4.41.
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*/
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csd->structure = UNSTUFF_BITS(resp, 126, 2);
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if (csd->structure == 0) {
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pr_err("%s: unrecognised CSD structure version %d\n",
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mmc_hostname(card->host), csd->structure);
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return -EINVAL;
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}
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csd->mmca_vsn = UNSTUFF_BITS(resp, 122, 4);
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m = UNSTUFF_BITS(resp, 115, 4);
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e = UNSTUFF_BITS(resp, 112, 3);
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csd->taac_ns = (taac_exp[e] * taac_mant[m] + 9) / 10;
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csd->taac_clks = UNSTUFF_BITS(resp, 104, 8) * 100;
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m = UNSTUFF_BITS(resp, 99, 4);
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e = UNSTUFF_BITS(resp, 96, 3);
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csd->max_dtr = tran_exp[e] * tran_mant[m];
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csd->cmdclass = UNSTUFF_BITS(resp, 84, 12);
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e = UNSTUFF_BITS(resp, 47, 3);
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m = UNSTUFF_BITS(resp, 62, 12);
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csd->capacity = (1 + m) << (e + 2);
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csd->read_blkbits = UNSTUFF_BITS(resp, 80, 4);
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csd->read_partial = UNSTUFF_BITS(resp, 79, 1);
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csd->write_misalign = UNSTUFF_BITS(resp, 78, 1);
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csd->read_misalign = UNSTUFF_BITS(resp, 77, 1);
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csd->dsr_imp = UNSTUFF_BITS(resp, 76, 1);
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csd->r2w_factor = UNSTUFF_BITS(resp, 26, 3);
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csd->write_blkbits = UNSTUFF_BITS(resp, 22, 4);
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csd->write_partial = UNSTUFF_BITS(resp, 21, 1);
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if (csd->write_blkbits >= 9) {
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a = UNSTUFF_BITS(resp, 42, 5);
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b = UNSTUFF_BITS(resp, 37, 5);
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csd->erase_size = (a + 1) * (b + 1);
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csd->erase_size <<= csd->write_blkbits - 9;
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}
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return 0;
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}
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static void mmc_select_card_type(struct mmc_card *card)
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{
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struct mmc_host *host = card->host;
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u8 card_type = card->ext_csd.raw_card_type;
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u32 caps = host->caps, caps2 = host->caps2;
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unsigned int hs_max_dtr = 0, hs200_max_dtr = 0;
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unsigned int avail_type = 0;
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if (caps & MMC_CAP_MMC_HIGHSPEED &&
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card_type & EXT_CSD_CARD_TYPE_HS_26) {
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hs_max_dtr = MMC_HIGH_26_MAX_DTR;
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avail_type |= EXT_CSD_CARD_TYPE_HS_26;
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}
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if (caps & MMC_CAP_MMC_HIGHSPEED &&
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card_type & EXT_CSD_CARD_TYPE_HS_52) {
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hs_max_dtr = MMC_HIGH_52_MAX_DTR;
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avail_type |= EXT_CSD_CARD_TYPE_HS_52;
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}
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if (caps & (MMC_CAP_1_8V_DDR | MMC_CAP_3_3V_DDR) &&
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card_type & EXT_CSD_CARD_TYPE_DDR_1_8V) {
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hs_max_dtr = MMC_HIGH_DDR_MAX_DTR;
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avail_type |= EXT_CSD_CARD_TYPE_DDR_1_8V;
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}
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if (caps & MMC_CAP_1_2V_DDR &&
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card_type & EXT_CSD_CARD_TYPE_DDR_1_2V) {
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hs_max_dtr = MMC_HIGH_DDR_MAX_DTR;
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avail_type |= EXT_CSD_CARD_TYPE_DDR_1_2V;
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}
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if (caps2 & MMC_CAP2_HS200_1_8V_SDR &&
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card_type & EXT_CSD_CARD_TYPE_HS200_1_8V) {
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hs200_max_dtr = MMC_HS200_MAX_DTR;
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avail_type |= EXT_CSD_CARD_TYPE_HS200_1_8V;
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}
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if (caps2 & MMC_CAP2_HS200_1_2V_SDR &&
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card_type & EXT_CSD_CARD_TYPE_HS200_1_2V) {
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hs200_max_dtr = MMC_HS200_MAX_DTR;
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avail_type |= EXT_CSD_CARD_TYPE_HS200_1_2V;
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}
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if (caps2 & MMC_CAP2_HS400_1_8V &&
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card_type & EXT_CSD_CARD_TYPE_HS400_1_8V) {
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hs200_max_dtr = MMC_HS200_MAX_DTR;
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avail_type |= EXT_CSD_CARD_TYPE_HS400_1_8V;
|
|
}
|
|
|
|
if (caps2 & MMC_CAP2_HS400_1_2V &&
|
|
card_type & EXT_CSD_CARD_TYPE_HS400_1_2V) {
|
|
hs200_max_dtr = MMC_HS200_MAX_DTR;
|
|
avail_type |= EXT_CSD_CARD_TYPE_HS400_1_2V;
|
|
}
|
|
|
|
if ((caps2 & MMC_CAP2_HS400_ES) &&
|
|
card->ext_csd.strobe_support &&
|
|
(avail_type & EXT_CSD_CARD_TYPE_HS400))
|
|
avail_type |= EXT_CSD_CARD_TYPE_HS400ES;
|
|
|
|
card->ext_csd.hs_max_dtr = hs_max_dtr;
|
|
card->ext_csd.hs200_max_dtr = hs200_max_dtr;
|
|
card->mmc_avail_type = avail_type;
|
|
}
|
|
|
|
static void mmc_manage_enhanced_area(struct mmc_card *card, u8 *ext_csd)
|
|
{
|
|
u8 hc_erase_grp_sz, hc_wp_grp_sz;
|
|
|
|
/*
|
|
* Disable these attributes by default
|
|
*/
|
|
card->ext_csd.enhanced_area_offset = -EINVAL;
|
|
card->ext_csd.enhanced_area_size = -EINVAL;
|
|
|
|
/*
|
|
* Enhanced area feature support -- check whether the eMMC
|
|
* card has the Enhanced area enabled. If so, export enhanced
|
|
* area offset and size to user by adding sysfs interface.
|
|
*/
|
|
if ((ext_csd[EXT_CSD_PARTITION_SUPPORT] & 0x2) &&
|
|
(ext_csd[EXT_CSD_PARTITION_ATTRIBUTE] & 0x1)) {
|
|
if (card->ext_csd.partition_setting_completed) {
|
|
hc_erase_grp_sz =
|
|
ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE];
|
|
hc_wp_grp_sz =
|
|
ext_csd[EXT_CSD_HC_WP_GRP_SIZE];
|
|
|
|
/*
|
|
* calculate the enhanced data area offset, in bytes
|
|
*/
|
|
card->ext_csd.enhanced_area_offset =
|
|
(((unsigned long long)ext_csd[139]) << 24) +
|
|
(((unsigned long long)ext_csd[138]) << 16) +
|
|
(((unsigned long long)ext_csd[137]) << 8) +
|
|
(((unsigned long long)ext_csd[136]));
|
|
if (mmc_card_blockaddr(card))
|
|
card->ext_csd.enhanced_area_offset <<= 9;
|
|
/*
|
|
* calculate the enhanced data area size, in kilobytes
|
|
*/
|
|
card->ext_csd.enhanced_area_size =
|
|
(ext_csd[142] << 16) + (ext_csd[141] << 8) +
|
|
ext_csd[140];
|
|
card->ext_csd.enhanced_area_size *=
|
|
(size_t)(hc_erase_grp_sz * hc_wp_grp_sz);
|
|
card->ext_csd.enhanced_area_size <<= 9;
|
|
} else {
|
|
pr_warn("%s: defines enhanced area without partition setting complete\n",
|
|
mmc_hostname(card->host));
|
|
}
|
|
}
|
|
}
|
|
|
|
static void mmc_part_add(struct mmc_card *card, u64 size,
|
|
unsigned int part_cfg, char *name, int idx, bool ro,
|
|
int area_type)
|
|
{
|
|
card->part[card->nr_parts].size = size;
|
|
card->part[card->nr_parts].part_cfg = part_cfg;
|
|
sprintf(card->part[card->nr_parts].name, name, idx);
|
|
card->part[card->nr_parts].force_ro = ro;
|
|
card->part[card->nr_parts].area_type = area_type;
|
|
card->nr_parts++;
|
|
}
|
|
|
|
static void mmc_manage_gp_partitions(struct mmc_card *card, u8 *ext_csd)
|
|
{
|
|
int idx;
|
|
u8 hc_erase_grp_sz, hc_wp_grp_sz;
|
|
u64 part_size;
|
|
|
|
/*
|
|
* General purpose partition feature support --
|
|
* If ext_csd has the size of general purpose partitions,
|
|
* set size, part_cfg, partition name in mmc_part.
|
|
*/
|
|
if (ext_csd[EXT_CSD_PARTITION_SUPPORT] &
|
|
EXT_CSD_PART_SUPPORT_PART_EN) {
|
|
hc_erase_grp_sz =
|
|
ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE];
|
|
hc_wp_grp_sz =
|
|
ext_csd[EXT_CSD_HC_WP_GRP_SIZE];
|
|
|
|
for (idx = 0; idx < MMC_NUM_GP_PARTITION; idx++) {
|
|
if (!ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3] &&
|
|
!ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 1] &&
|
|
!ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 2])
|
|
continue;
|
|
if (card->ext_csd.partition_setting_completed == 0) {
|
|
pr_warn("%s: has partition size defined without partition complete\n",
|
|
mmc_hostname(card->host));
|
|
break;
|
|
}
|
|
part_size =
|
|
(ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 2]
|
|
<< 16) +
|
|
(ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 1]
|
|
<< 8) +
|
|
ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3];
|
|
part_size *= (hc_erase_grp_sz * hc_wp_grp_sz);
|
|
mmc_part_add(card, part_size << 19,
|
|
EXT_CSD_PART_CONFIG_ACC_GP0 + idx,
|
|
"gp%d", idx, false,
|
|
MMC_BLK_DATA_AREA_GP);
|
|
}
|
|
}
|
|
}
|
|
|
|
/* check whether the eMMC card supports HPI */
|
|
void mmc_check_hpi_support(struct mmc_card *card, u8 *ext_csd)
|
|
{
|
|
if ((ext_csd[EXT_CSD_HPI_FEATURES] & 0x1) &&
|
|
!(card->quirks & MMC_QUIRK_BROKEN_HPI)) {
|
|
card->ext_csd.hpi = 1;
|
|
if (ext_csd[EXT_CSD_HPI_FEATURES] & 0x2)
|
|
card->ext_csd.hpi_cmd = MMC_STOP_TRANSMISSION;
|
|
else
|
|
card->ext_csd.hpi_cmd = MMC_SEND_STATUS;
|
|
/*
|
|
* Indicate the maximum timeout to close
|
|
* a command interrupted by HPI
|
|
*/
|
|
card->ext_csd.out_of_int_time =
|
|
ext_csd[EXT_CSD_OUT_OF_INTERRUPT_TIME] * 10;
|
|
pr_info("%s: Out-of-interrupt timeout is %d[ms]\n",
|
|
mmc_hostname(card->host),
|
|
card->ext_csd.out_of_int_time);
|
|
}
|
|
|
|
}
|
|
|
|
/* Check bkops support of card */
|
|
void mmc_check_bkops_support(struct mmc_card *card, u8 *ext_csd)
|
|
{
|
|
if (!mmc_card_broken_hpi(card) &&
|
|
(ext_csd[EXT_CSD_BKOPS_SUPPORT] & 0x1) &&
|
|
card->ext_csd.hpi) {
|
|
card->ext_csd.bkops = 1;
|
|
card->ext_csd.man_bkops_en =
|
|
(ext_csd[EXT_CSD_BKOPS_EN] &
|
|
EXT_CSD_MANUAL_BKOPS_MASK);
|
|
card->ext_csd.raw_bkops_status =
|
|
ext_csd[EXT_CSD_BKOPS_STATUS];
|
|
if (card->ext_csd.man_bkops_en)
|
|
pr_debug("%s: MAN_BKOPS_EN bit is set\n",
|
|
mmc_hostname(card->host));
|
|
card->ext_csd.auto_bkops_en =
|
|
(ext_csd[EXT_CSD_BKOPS_EN] &
|
|
EXT_CSD_AUTO_BKOPS_MASK);
|
|
if (card->ext_csd.auto_bkops_en)
|
|
pr_debug("%s: AUTO_BKOPS_EN bit is set\n",
|
|
mmc_hostname(card->host));
|
|
}
|
|
}
|
|
|
|
/* Minimum partition switch timeout in milliseconds */
|
|
#define MMC_MIN_PART_SWITCH_TIME 300
|
|
|
|
/*
|
|
* Decode extended CSD.
|
|
*/
|
|
static int mmc_decode_ext_csd(struct mmc_card *card, u8 *ext_csd)
|
|
{
|
|
int err = 0, idx;
|
|
u64 part_size;
|
|
struct device_node *np;
|
|
bool broken_hpi = false;
|
|
|
|
/* Version is coded in the CSD_STRUCTURE byte in the EXT_CSD register */
|
|
card->ext_csd.raw_ext_csd_structure = ext_csd[EXT_CSD_STRUCTURE];
|
|
if (card->csd.structure == 3) {
|
|
if (card->ext_csd.raw_ext_csd_structure > 2) {
|
|
pr_err("%s: unrecognised EXT_CSD structure "
|
|
"version %d\n", mmc_hostname(card->host),
|
|
card->ext_csd.raw_ext_csd_structure);
|
|
err = -EINVAL;
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
np = mmc_of_find_child_device(card->host, 0);
|
|
if (np && of_device_is_compatible(np, "mmc-card"))
|
|
broken_hpi = of_property_read_bool(np, "broken-hpi");
|
|
of_node_put(np);
|
|
|
|
/*
|
|
* The EXT_CSD format is meant to be forward compatible. As long
|
|
* as CSD_STRUCTURE does not change, all values for EXT_CSD_REV
|
|
* are authorized, see JEDEC JESD84-B50 section B.8.
|
|
*/
|
|
card->ext_csd.rev = ext_csd[EXT_CSD_REV];
|
|
|
|
/* fixup device after ext_csd revision field is updated */
|
|
mmc_fixup_device(card, mmc_ext_csd_fixups);
|
|
|
|
card->ext_csd.raw_sectors[0] = ext_csd[EXT_CSD_SEC_CNT + 0];
|
|
card->ext_csd.raw_sectors[1] = ext_csd[EXT_CSD_SEC_CNT + 1];
|
|
card->ext_csd.raw_sectors[2] = ext_csd[EXT_CSD_SEC_CNT + 2];
|
|
card->ext_csd.raw_sectors[3] = ext_csd[EXT_CSD_SEC_CNT + 3];
|
|
if (card->ext_csd.rev >= 2) {
|
|
card->ext_csd.sectors =
|
|
ext_csd[EXT_CSD_SEC_CNT + 0] << 0 |
|
|
ext_csd[EXT_CSD_SEC_CNT + 1] << 8 |
|
|
ext_csd[EXT_CSD_SEC_CNT + 2] << 16 |
|
|
ext_csd[EXT_CSD_SEC_CNT + 3] << 24;
|
|
|
|
/* Cards with density > 2GiB are sector addressed */
|
|
if (card->ext_csd.sectors > (2u * 1024 * 1024 * 1024) / 512)
|
|
mmc_card_set_blockaddr(card);
|
|
}
|
|
|
|
card->ext_csd.strobe_support = ext_csd[EXT_CSD_STROBE_SUPPORT];
|
|
card->ext_csd.raw_card_type = ext_csd[EXT_CSD_CARD_TYPE];
|
|
mmc_select_card_type(card);
|
|
|
|
card->ext_csd.raw_s_a_timeout = ext_csd[EXT_CSD_S_A_TIMEOUT];
|
|
card->ext_csd.raw_erase_timeout_mult =
|
|
ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT];
|
|
card->ext_csd.raw_hc_erase_grp_size =
|
|
ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE];
|
|
if (card->ext_csd.rev >= 3) {
|
|
u8 sa_shift = ext_csd[EXT_CSD_S_A_TIMEOUT];
|
|
card->ext_csd.part_config = ext_csd[EXT_CSD_PART_CONFIG];
|
|
|
|
/* EXT_CSD value is in units of 10ms, but we store in ms */
|
|
card->ext_csd.part_time = 10 * ext_csd[EXT_CSD_PART_SWITCH_TIME];
|
|
|
|
/* Sleep / awake timeout in 100ns units */
|
|
if (sa_shift > 0 && sa_shift <= 0x17)
|
|
card->ext_csd.sa_timeout =
|
|
1 << ext_csd[EXT_CSD_S_A_TIMEOUT];
|
|
card->ext_csd.erase_group_def =
|
|
ext_csd[EXT_CSD_ERASE_GROUP_DEF];
|
|
card->ext_csd.hc_erase_timeout = 300 *
|
|
ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT];
|
|
card->ext_csd.hc_erase_size =
|
|
ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] << 10;
|
|
|
|
card->ext_csd.rel_sectors = ext_csd[EXT_CSD_REL_WR_SEC_C];
|
|
|
|
/*
|
|
* There are two boot regions of equal size, defined in
|
|
* multiples of 128K.
|
|
*/
|
|
if (ext_csd[EXT_CSD_BOOT_MULT] && mmc_boot_partition_access(card->host)) {
|
|
for (idx = 0; idx < MMC_NUM_BOOT_PARTITION; idx++) {
|
|
part_size = ext_csd[EXT_CSD_BOOT_MULT] << 17;
|
|
mmc_part_add(card, part_size,
|
|
EXT_CSD_PART_CONFIG_ACC_BOOT0 + idx,
|
|
"boot%d", idx, true,
|
|
MMC_BLK_DATA_AREA_BOOT);
|
|
}
|
|
}
|
|
}
|
|
|
|
card->ext_csd.raw_hc_erase_gap_size =
|
|
ext_csd[EXT_CSD_HC_WP_GRP_SIZE];
|
|
card->ext_csd.raw_sec_trim_mult =
|
|
ext_csd[EXT_CSD_SEC_TRIM_MULT];
|
|
card->ext_csd.raw_sec_erase_mult =
|
|
ext_csd[EXT_CSD_SEC_ERASE_MULT];
|
|
card->ext_csd.raw_sec_feature_support =
|
|
ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT];
|
|
card->ext_csd.raw_trim_mult =
|
|
ext_csd[EXT_CSD_TRIM_MULT];
|
|
card->ext_csd.raw_partition_support = ext_csd[EXT_CSD_PARTITION_SUPPORT];
|
|
card->ext_csd.raw_driver_strength = ext_csd[EXT_CSD_DRIVER_STRENGTH];
|
|
if (card->ext_csd.rev >= 4) {
|
|
if (ext_csd[EXT_CSD_PARTITION_SETTING_COMPLETED] &
|
|
EXT_CSD_PART_SETTING_COMPLETED)
|
|
card->ext_csd.partition_setting_completed = 1;
|
|
else
|
|
card->ext_csd.partition_setting_completed = 0;
|
|
|
|
mmc_manage_enhanced_area(card, ext_csd);
|
|
|
|
mmc_manage_gp_partitions(card, ext_csd);
|
|
|
|
card->ext_csd.sec_trim_mult =
|
|
ext_csd[EXT_CSD_SEC_TRIM_MULT];
|
|
card->ext_csd.sec_erase_mult =
|
|
ext_csd[EXT_CSD_SEC_ERASE_MULT];
|
|
card->ext_csd.sec_feature_support =
|
|
ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT];
|
|
card->ext_csd.trim_timeout = 300 *
|
|
ext_csd[EXT_CSD_TRIM_MULT];
|
|
|
|
/*
|
|
* Note that the call to mmc_part_add above defaults to read
|
|
* only. If this default assumption is changed, the call must
|
|
* take into account the value of boot_locked below.
|
|
*/
|
|
card->ext_csd.boot_ro_lock = ext_csd[EXT_CSD_BOOT_WP];
|
|
card->ext_csd.boot_ro_lockable = true;
|
|
|
|
/* Save power class values */
|
|
card->ext_csd.raw_pwr_cl_52_195 =
|
|
ext_csd[EXT_CSD_PWR_CL_52_195];
|
|
card->ext_csd.raw_pwr_cl_26_195 =
|
|
ext_csd[EXT_CSD_PWR_CL_26_195];
|
|
card->ext_csd.raw_pwr_cl_52_360 =
|
|
ext_csd[EXT_CSD_PWR_CL_52_360];
|
|
card->ext_csd.raw_pwr_cl_26_360 =
|
|
ext_csd[EXT_CSD_PWR_CL_26_360];
|
|
card->ext_csd.raw_pwr_cl_200_195 =
|
|
ext_csd[EXT_CSD_PWR_CL_200_195];
|
|
card->ext_csd.raw_pwr_cl_200_360 =
|
|
ext_csd[EXT_CSD_PWR_CL_200_360];
|
|
card->ext_csd.raw_pwr_cl_ddr_52_195 =
|
|
ext_csd[EXT_CSD_PWR_CL_DDR_52_195];
|
|
card->ext_csd.raw_pwr_cl_ddr_52_360 =
|
|
ext_csd[EXT_CSD_PWR_CL_DDR_52_360];
|
|
card->ext_csd.raw_pwr_cl_ddr_200_360 =
|
|
ext_csd[EXT_CSD_PWR_CL_DDR_200_360];
|
|
}
|
|
|
|
mmc_check_hpi_support(card, ext_csd);
|
|
|
|
if (card->ext_csd.rev >= 5) {
|
|
/* Adjust production date as per JEDEC JESD84-B451 */
|
|
if (card->cid.year < 2010)
|
|
card->cid.year += 16;
|
|
|
|
/* check whether the eMMC card supports BKOPS */
|
|
mmc_check_bkops_support(card, ext_csd);
|
|
|
|
/* check whether the eMMC card supports HPI */
|
|
if (!mmc_card_broken_hpi(card) &&
|
|
!broken_hpi && (ext_csd[EXT_CSD_HPI_FEATURES] & 0x1)) {
|
|
card->ext_csd.hpi = 1;
|
|
if (ext_csd[EXT_CSD_HPI_FEATURES] & 0x2)
|
|
card->ext_csd.hpi_cmd = MMC_STOP_TRANSMISSION;
|
|
else
|
|
card->ext_csd.hpi_cmd = MMC_SEND_STATUS;
|
|
/*
|
|
* Indicate the maximum timeout to close
|
|
* a command interrupted by HPI
|
|
*/
|
|
card->ext_csd.out_of_int_time =
|
|
ext_csd[EXT_CSD_OUT_OF_INTERRUPT_TIME] * 10;
|
|
}
|
|
|
|
card->ext_csd.rel_param = ext_csd[EXT_CSD_WR_REL_PARAM];
|
|
card->ext_csd.rst_n_function = ext_csd[EXT_CSD_RST_N_FUNCTION];
|
|
|
|
/*
|
|
* Some eMMC vendors violate eMMC 5.0 spec and set
|
|
* REL_WR_SEC_C register to 0x10 to indicate the
|
|
* ability of RPMB throughput improvement thus lead
|
|
* to failure when TZ module write data to RPMB
|
|
* partition. So check bit[4] of EXT_CSD[166] and
|
|
* if it is not set then change value of REL_WR_SEC_C
|
|
* to 0x1 directly ignoring value of EXT_CSD[222].
|
|
*/
|
|
if (!(card->ext_csd.rel_param &
|
|
EXT_CSD_WR_REL_PARAM_EN_RPMB_REL_WR))
|
|
card->ext_csd.rel_sectors = 0x1;
|
|
|
|
/*
|
|
* RPMB regions are defined in multiples of 128K.
|
|
*/
|
|
card->ext_csd.raw_rpmb_size_mult = ext_csd[EXT_CSD_RPMB_MULT];
|
|
if (ext_csd[EXT_CSD_RPMB_MULT] && mmc_host_cmd23(card->host)) {
|
|
mmc_part_add(card, ext_csd[EXT_CSD_RPMB_MULT] << 17,
|
|
EXT_CSD_PART_CONFIG_ACC_RPMB,
|
|
"rpmb", 0, false,
|
|
MMC_BLK_DATA_AREA_RPMB);
|
|
}
|
|
}
|
|
|
|
card->ext_csd.raw_erased_mem_count = ext_csd[EXT_CSD_ERASED_MEM_CONT];
|
|
if (ext_csd[EXT_CSD_ERASED_MEM_CONT])
|
|
card->erased_byte = 0xFF;
|
|
else
|
|
card->erased_byte = 0x0;
|
|
|
|
/* eMMC v4.5 or later */
|
|
card->ext_csd.generic_cmd6_time = DEFAULT_CMD6_TIMEOUT_MS;
|
|
if (card->ext_csd.rev >= 6) {
|
|
card->ext_csd.feature_support |= MMC_DISCARD_FEATURE;
|
|
|
|
card->ext_csd.generic_cmd6_time = 10 *
|
|
ext_csd[EXT_CSD_GENERIC_CMD6_TIME];
|
|
card->ext_csd.power_off_longtime = 10 *
|
|
ext_csd[EXT_CSD_POWER_OFF_LONG_TIME];
|
|
|
|
card->ext_csd.cache_size =
|
|
ext_csd[EXT_CSD_CACHE_SIZE + 0] << 0 |
|
|
ext_csd[EXT_CSD_CACHE_SIZE + 1] << 8 |
|
|
ext_csd[EXT_CSD_CACHE_SIZE + 2] << 16 |
|
|
ext_csd[EXT_CSD_CACHE_SIZE + 3] << 24;
|
|
|
|
if (ext_csd[EXT_CSD_DATA_SECTOR_SIZE] == 1)
|
|
card->ext_csd.data_sector_size = 4096;
|
|
else
|
|
card->ext_csd.data_sector_size = 512;
|
|
|
|
if ((ext_csd[EXT_CSD_DATA_TAG_SUPPORT] & 1) &&
|
|
(ext_csd[EXT_CSD_TAG_UNIT_SIZE] <= 8)) {
|
|
card->ext_csd.data_tag_unit_size =
|
|
((unsigned int) 1 << ext_csd[EXT_CSD_TAG_UNIT_SIZE]) *
|
|
(card->ext_csd.data_sector_size);
|
|
} else {
|
|
card->ext_csd.data_tag_unit_size = 0;
|
|
}
|
|
|
|
card->ext_csd.max_packed_writes =
|
|
ext_csd[EXT_CSD_MAX_PACKED_WRITES];
|
|
card->ext_csd.max_packed_reads =
|
|
ext_csd[EXT_CSD_MAX_PACKED_READS];
|
|
} else {
|
|
card->ext_csd.data_sector_size = 512;
|
|
}
|
|
|
|
/*
|
|
* GENERIC_CMD6_TIME is to be used "unless a specific timeout is defined
|
|
* when accessing a specific field", so use it here if there is no
|
|
* PARTITION_SWITCH_TIME.
|
|
*/
|
|
if (!card->ext_csd.part_time)
|
|
card->ext_csd.part_time = card->ext_csd.generic_cmd6_time;
|
|
/* Some eMMC set the value too low so set a minimum */
|
|
if (card->ext_csd.part_time < MMC_MIN_PART_SWITCH_TIME)
|
|
card->ext_csd.part_time = MMC_MIN_PART_SWITCH_TIME;
|
|
|
|
/* eMMC v5 or later */
|
|
if (card->ext_csd.rev >= 7) {
|
|
memcpy(card->ext_csd.fwrev, &ext_csd[EXT_CSD_FIRMWARE_VERSION],
|
|
MMC_FIRMWARE_LEN);
|
|
card->ext_csd.ffu_capable =
|
|
(ext_csd[EXT_CSD_SUPPORTED_MODE] & 0x1) &&
|
|
!(ext_csd[EXT_CSD_FW_CONFIG] & 0x1);
|
|
|
|
card->ext_csd.pre_eol_info = ext_csd[EXT_CSD_PRE_EOL_INFO];
|
|
card->ext_csd.device_life_time_est_typ_a =
|
|
ext_csd[EXT_CSD_DEVICE_LIFE_TIME_EST_TYP_A];
|
|
card->ext_csd.device_life_time_est_typ_b =
|
|
ext_csd[EXT_CSD_DEVICE_LIFE_TIME_EST_TYP_B];
|
|
card->ext_csd.fw_version = ext_csd[EXT_CSD_FIRMWARE_VERSION];
|
|
pr_info("%s: eMMC FW version: 0x%02x\n",
|
|
mmc_hostname(card->host),
|
|
card->ext_csd.fw_version);
|
|
}
|
|
|
|
/* eMMC v5.1 or later */
|
|
if (card->ext_csd.rev >= 8) {
|
|
card->ext_csd.cmdq_support = ext_csd[EXT_CSD_CMDQ_SUPPORT] &
|
|
EXT_CSD_CMDQ_SUPPORTED;
|
|
card->ext_csd.cmdq_depth = (ext_csd[EXT_CSD_CMDQ_DEPTH] &
|
|
EXT_CSD_CMDQ_DEPTH_MASK) + 1;
|
|
/* Exclude inefficiently small queue depths */
|
|
if (card->ext_csd.cmdq_depth <= 2) {
|
|
card->ext_csd.cmdq_support = false;
|
|
card->ext_csd.cmdq_depth = 0;
|
|
}
|
|
if (card->ext_csd.cmdq_support) {
|
|
pr_debug("%s: Command Queue supported depth %u\n",
|
|
mmc_hostname(card->host),
|
|
card->ext_csd.cmdq_depth);
|
|
}
|
|
card->ext_csd.enhanced_rpmb_supported =
|
|
(card->ext_csd.rel_param &
|
|
EXT_CSD_WR_REL_PARAM_EN_RPMB_REL_WR);
|
|
}
|
|
out:
|
|
return err;
|
|
}
|
|
|
|
static int mmc_read_ext_csd(struct mmc_card *card)
|
|
{
|
|
struct mmc_host *host = card->host;
|
|
u8 *ext_csd;
|
|
int err;
|
|
|
|
if (!mmc_can_ext_csd(card))
|
|
return 0;
|
|
|
|
err = mmc_get_ext_csd(card, &ext_csd);
|
|
if (err) {
|
|
pr_err("%s: %s: mmc_get_ext_csd() fails %d\n",
|
|
mmc_hostname(host), __func__, err);
|
|
/* If the host or the card can't do the switch,
|
|
* fail more gracefully. */
|
|
if ((err != -EINVAL)
|
|
&& (err != -ENOSYS)
|
|
&& (err != -EFAULT))
|
|
return err;
|
|
|
|
/*
|
|
* High capacity cards should have this "magic" size
|
|
* stored in their CSD.
|
|
*/
|
|
if (card->csd.capacity == (4096 * 512)) {
|
|
pr_err("%s: unable to read EXT_CSD on a possible high capacity card. Card will be ignored.\n",
|
|
mmc_hostname(card->host));
|
|
} else {
|
|
pr_warn("%s: unable to read EXT_CSD, performance might suffer\n",
|
|
mmc_hostname(card->host));
|
|
err = 0;
|
|
}
|
|
|
|
return err;
|
|
}
|
|
|
|
err = mmc_decode_ext_csd(card, ext_csd);
|
|
kfree(ext_csd);
|
|
return err;
|
|
}
|
|
|
|
static int mmc_compare_ext_csds(struct mmc_card *card, unsigned bus_width)
|
|
{
|
|
u8 *bw_ext_csd;
|
|
int err;
|
|
|
|
if (bus_width == MMC_BUS_WIDTH_1)
|
|
return 0;
|
|
|
|
err = mmc_get_ext_csd(card, &bw_ext_csd);
|
|
if (err)
|
|
return err;
|
|
|
|
/* only compare read only fields */
|
|
err = !((card->ext_csd.raw_partition_support ==
|
|
bw_ext_csd[EXT_CSD_PARTITION_SUPPORT]) &&
|
|
(card->ext_csd.raw_erased_mem_count ==
|
|
bw_ext_csd[EXT_CSD_ERASED_MEM_CONT]) &&
|
|
(card->ext_csd.rev ==
|
|
bw_ext_csd[EXT_CSD_REV]) &&
|
|
(card->ext_csd.raw_ext_csd_structure ==
|
|
bw_ext_csd[EXT_CSD_STRUCTURE]) &&
|
|
(card->ext_csd.raw_card_type ==
|
|
bw_ext_csd[EXT_CSD_CARD_TYPE]) &&
|
|
(card->ext_csd.raw_s_a_timeout ==
|
|
bw_ext_csd[EXT_CSD_S_A_TIMEOUT]) &&
|
|
(card->ext_csd.raw_hc_erase_gap_size ==
|
|
bw_ext_csd[EXT_CSD_HC_WP_GRP_SIZE]) &&
|
|
(card->ext_csd.raw_erase_timeout_mult ==
|
|
bw_ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]) &&
|
|
(card->ext_csd.raw_hc_erase_grp_size ==
|
|
bw_ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]) &&
|
|
(card->ext_csd.raw_sec_trim_mult ==
|
|
bw_ext_csd[EXT_CSD_SEC_TRIM_MULT]) &&
|
|
(card->ext_csd.raw_sec_erase_mult ==
|
|
bw_ext_csd[EXT_CSD_SEC_ERASE_MULT]) &&
|
|
(card->ext_csd.raw_sec_feature_support ==
|
|
bw_ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]) &&
|
|
(card->ext_csd.raw_trim_mult ==
|
|
bw_ext_csd[EXT_CSD_TRIM_MULT]) &&
|
|
(card->ext_csd.raw_sectors[0] ==
|
|
bw_ext_csd[EXT_CSD_SEC_CNT + 0]) &&
|
|
(card->ext_csd.raw_sectors[1] ==
|
|
bw_ext_csd[EXT_CSD_SEC_CNT + 1]) &&
|
|
(card->ext_csd.raw_sectors[2] ==
|
|
bw_ext_csd[EXT_CSD_SEC_CNT + 2]) &&
|
|
(card->ext_csd.raw_sectors[3] ==
|
|
bw_ext_csd[EXT_CSD_SEC_CNT + 3]) &&
|
|
(card->ext_csd.raw_pwr_cl_52_195 ==
|
|
bw_ext_csd[EXT_CSD_PWR_CL_52_195]) &&
|
|
(card->ext_csd.raw_pwr_cl_26_195 ==
|
|
bw_ext_csd[EXT_CSD_PWR_CL_26_195]) &&
|
|
(card->ext_csd.raw_pwr_cl_52_360 ==
|
|
bw_ext_csd[EXT_CSD_PWR_CL_52_360]) &&
|
|
(card->ext_csd.raw_pwr_cl_26_360 ==
|
|
bw_ext_csd[EXT_CSD_PWR_CL_26_360]) &&
|
|
(card->ext_csd.raw_pwr_cl_200_195 ==
|
|
bw_ext_csd[EXT_CSD_PWR_CL_200_195]) &&
|
|
(card->ext_csd.raw_pwr_cl_200_360 ==
|
|
bw_ext_csd[EXT_CSD_PWR_CL_200_360]) &&
|
|
(card->ext_csd.raw_pwr_cl_ddr_52_195 ==
|
|
bw_ext_csd[EXT_CSD_PWR_CL_DDR_52_195]) &&
|
|
(card->ext_csd.raw_pwr_cl_ddr_52_360 ==
|
|
bw_ext_csd[EXT_CSD_PWR_CL_DDR_52_360]) &&
|
|
(card->ext_csd.raw_pwr_cl_ddr_200_360 ==
|
|
bw_ext_csd[EXT_CSD_PWR_CL_DDR_200_360]));
|
|
|
|
if (err)
|
|
err = -EINVAL;
|
|
|
|
kfree(bw_ext_csd);
|
|
return err;
|
|
}
|
|
|
|
MMC_DEV_ATTR(cid, "%08x%08x%08x%08x\n", card->raw_cid[0], card->raw_cid[1],
|
|
card->raw_cid[2], card->raw_cid[3]);
|
|
MMC_DEV_ATTR(csd, "%08x%08x%08x%08x\n", card->raw_csd[0], card->raw_csd[1],
|
|
card->raw_csd[2], card->raw_csd[3]);
|
|
MMC_DEV_ATTR(date, "%02d/%04d\n", card->cid.month, card->cid.year);
|
|
MMC_DEV_ATTR(erase_size, "%u\n", card->erase_size << 9);
|
|
MMC_DEV_ATTR(preferred_erase_size, "%u\n", card->pref_erase << 9);
|
|
MMC_DEV_ATTR(ffu_capable, "%d\n", card->ext_csd.ffu_capable);
|
|
MMC_DEV_ATTR(hwrev, "0x%x\n", card->cid.hwrev);
|
|
MMC_DEV_ATTR(manfid, "0x%06x\n", card->cid.manfid);
|
|
MMC_DEV_ATTR(name, "%s\n", card->cid.prod_name);
|
|
MMC_DEV_ATTR(oemid, "0x%04x\n", card->cid.oemid);
|
|
MMC_DEV_ATTR(prv, "0x%x\n", card->cid.prv);
|
|
MMC_DEV_ATTR(rev, "0x%x\n", card->ext_csd.rev);
|
|
MMC_DEV_ATTR(pre_eol_info, "0x%02x\n", card->ext_csd.pre_eol_info);
|
|
MMC_DEV_ATTR(life_time, "0x%02x 0x%02x\n",
|
|
card->ext_csd.device_life_time_est_typ_a,
|
|
card->ext_csd.device_life_time_est_typ_b);
|
|
MMC_DEV_ATTR(serial, "0x%08x\n", card->cid.serial);
|
|
MMC_DEV_ATTR(enhanced_area_offset, "%llu\n",
|
|
card->ext_csd.enhanced_area_offset);
|
|
MMC_DEV_ATTR(enhanced_area_size, "%u\n", card->ext_csd.enhanced_area_size);
|
|
MMC_DEV_ATTR(raw_rpmb_size_mult, "%#x\n", card->ext_csd.raw_rpmb_size_mult);
|
|
MMC_DEV_ATTR(enhanced_rpmb_supported, "%#x\n",
|
|
card->ext_csd.enhanced_rpmb_supported);
|
|
MMC_DEV_ATTR(rel_sectors, "%#x\n", card->ext_csd.rel_sectors);
|
|
MMC_DEV_ATTR(ocr, "0x%08x\n", card->ocr);
|
|
MMC_DEV_ATTR(rca, "0x%04x\n", card->rca);
|
|
MMC_DEV_ATTR(cmdq_en, "%d\n", card->ext_csd.cmdq_en);
|
|
|
|
static ssize_t mmc_fwrev_show(struct device *dev,
|
|
struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
struct mmc_card *card = mmc_dev_to_card(dev);
|
|
|
|
if (card->ext_csd.rev < 7) {
|
|
return sprintf(buf, "0x%x\n", card->cid.fwrev);
|
|
} else {
|
|
return sprintf(buf, "0x%*phN\n", MMC_FIRMWARE_LEN,
|
|
card->ext_csd.fwrev);
|
|
}
|
|
}
|
|
|
|
static DEVICE_ATTR(fwrev, S_IRUGO, mmc_fwrev_show, NULL);
|
|
|
|
static ssize_t mmc_dsr_show(struct device *dev,
|
|
struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
struct mmc_card *card = mmc_dev_to_card(dev);
|
|
struct mmc_host *host = card->host;
|
|
|
|
if (card->csd.dsr_imp && host->dsr_req)
|
|
return sprintf(buf, "0x%x\n", host->dsr);
|
|
else
|
|
/* return default DSR value */
|
|
return sprintf(buf, "0x%x\n", 0x404);
|
|
}
|
|
|
|
static DEVICE_ATTR(dsr, S_IRUGO, mmc_dsr_show, NULL);
|
|
|
|
static struct attribute *mmc_std_attrs[] = {
|
|
&dev_attr_cid.attr,
|
|
&dev_attr_csd.attr,
|
|
&dev_attr_date.attr,
|
|
&dev_attr_erase_size.attr,
|
|
&dev_attr_preferred_erase_size.attr,
|
|
&dev_attr_fwrev.attr,
|
|
&dev_attr_ffu_capable.attr,
|
|
&dev_attr_hwrev.attr,
|
|
&dev_attr_manfid.attr,
|
|
&dev_attr_name.attr,
|
|
&dev_attr_oemid.attr,
|
|
&dev_attr_prv.attr,
|
|
&dev_attr_rev.attr,
|
|
&dev_attr_pre_eol_info.attr,
|
|
&dev_attr_life_time.attr,
|
|
&dev_attr_serial.attr,
|
|
&dev_attr_enhanced_area_offset.attr,
|
|
&dev_attr_enhanced_area_size.attr,
|
|
&dev_attr_raw_rpmb_size_mult.attr,
|
|
&dev_attr_enhanced_rpmb_supported.attr,
|
|
&dev_attr_rel_sectors.attr,
|
|
&dev_attr_ocr.attr,
|
|
&dev_attr_rca.attr,
|
|
&dev_attr_dsr.attr,
|
|
&dev_attr_cmdq_en.attr,
|
|
NULL,
|
|
};
|
|
ATTRIBUTE_GROUPS(mmc_std);
|
|
|
|
static struct device_type mmc_type = {
|
|
.groups = mmc_std_groups,
|
|
};
|
|
|
|
/*
|
|
* Select the PowerClass for the current bus width
|
|
* If power class is defined for 4/8 bit bus in the
|
|
* extended CSD register, select it by executing the
|
|
* mmc_switch command.
|
|
*/
|
|
static int __mmc_select_powerclass(struct mmc_card *card,
|
|
unsigned int bus_width)
|
|
{
|
|
struct mmc_host *host = card->host;
|
|
struct mmc_ext_csd *ext_csd = &card->ext_csd;
|
|
unsigned int pwrclass_val = 0;
|
|
int err = 0;
|
|
|
|
switch (1 << host->ios.vdd) {
|
|
case MMC_VDD_165_195:
|
|
if (host->ios.clock <= MMC_HIGH_26_MAX_DTR)
|
|
pwrclass_val = ext_csd->raw_pwr_cl_26_195;
|
|
else if (host->ios.clock <= MMC_HIGH_52_MAX_DTR)
|
|
pwrclass_val = (bus_width <= EXT_CSD_BUS_WIDTH_8) ?
|
|
ext_csd->raw_pwr_cl_52_195 :
|
|
ext_csd->raw_pwr_cl_ddr_52_195;
|
|
else if (host->ios.clock <= MMC_HS200_MAX_DTR)
|
|
pwrclass_val = ext_csd->raw_pwr_cl_200_195;
|
|
break;
|
|
case MMC_VDD_27_28:
|
|
case MMC_VDD_28_29:
|
|
case MMC_VDD_29_30:
|
|
case MMC_VDD_30_31:
|
|
case MMC_VDD_31_32:
|
|
case MMC_VDD_32_33:
|
|
case MMC_VDD_33_34:
|
|
case MMC_VDD_34_35:
|
|
case MMC_VDD_35_36:
|
|
if (host->ios.clock <= MMC_HIGH_26_MAX_DTR)
|
|
pwrclass_val = ext_csd->raw_pwr_cl_26_360;
|
|
else if (host->ios.clock <= MMC_HIGH_52_MAX_DTR)
|
|
pwrclass_val = (bus_width <= EXT_CSD_BUS_WIDTH_8) ?
|
|
ext_csd->raw_pwr_cl_52_360 :
|
|
ext_csd->raw_pwr_cl_ddr_52_360;
|
|
else if (host->ios.clock <= MMC_HS200_MAX_DTR)
|
|
pwrclass_val = (bus_width == EXT_CSD_DDR_BUS_WIDTH_8) ?
|
|
ext_csd->raw_pwr_cl_ddr_200_360 :
|
|
ext_csd->raw_pwr_cl_200_360;
|
|
break;
|
|
default:
|
|
pr_warn("%s: Voltage range not supported for power class\n",
|
|
mmc_hostname(host));
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (bus_width & (EXT_CSD_BUS_WIDTH_8 | EXT_CSD_DDR_BUS_WIDTH_8))
|
|
pwrclass_val = (pwrclass_val & EXT_CSD_PWR_CL_8BIT_MASK) >>
|
|
EXT_CSD_PWR_CL_8BIT_SHIFT;
|
|
else
|
|
pwrclass_val = (pwrclass_val & EXT_CSD_PWR_CL_4BIT_MASK) >>
|
|
EXT_CSD_PWR_CL_4BIT_SHIFT;
|
|
|
|
/* If the power class is different from the default value */
|
|
if (pwrclass_val > 0) {
|
|
err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
|
|
EXT_CSD_POWER_CLASS,
|
|
pwrclass_val,
|
|
card->ext_csd.generic_cmd6_time);
|
|
}
|
|
|
|
return err;
|
|
}
|
|
|
|
static int mmc_select_powerclass(struct mmc_card *card)
|
|
{
|
|
struct mmc_host *host = card->host;
|
|
u32 bus_width, ext_csd_bits;
|
|
int err, ddr;
|
|
|
|
/* Power class selection is supported for versions >= 4.0 */
|
|
if (!mmc_can_ext_csd(card))
|
|
return 0;
|
|
|
|
bus_width = host->ios.bus_width;
|
|
/* Power class values are defined only for 4/8 bit bus */
|
|
if (bus_width == MMC_BUS_WIDTH_1)
|
|
return 0;
|
|
|
|
ddr = card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_52;
|
|
if (ddr)
|
|
ext_csd_bits = (bus_width == MMC_BUS_WIDTH_8) ?
|
|
EXT_CSD_DDR_BUS_WIDTH_8 : EXT_CSD_DDR_BUS_WIDTH_4;
|
|
else
|
|
ext_csd_bits = (bus_width == MMC_BUS_WIDTH_8) ?
|
|
EXT_CSD_BUS_WIDTH_8 : EXT_CSD_BUS_WIDTH_4;
|
|
|
|
err = __mmc_select_powerclass(card, ext_csd_bits);
|
|
if (err)
|
|
pr_warn("%s: power class selection to bus width %d ddr %d failed\n",
|
|
mmc_hostname(host), 1 << bus_width, ddr);
|
|
|
|
return err;
|
|
}
|
|
|
|
/*
|
|
* Set the bus speed for the selected speed mode.
|
|
*/
|
|
static void mmc_set_bus_speed(struct mmc_card *card)
|
|
{
|
|
unsigned int max_dtr = (unsigned int)-1;
|
|
|
|
if ((mmc_card_hs200(card) || mmc_card_hs400(card)) &&
|
|
max_dtr > card->ext_csd.hs200_max_dtr)
|
|
max_dtr = card->ext_csd.hs200_max_dtr;
|
|
else if (mmc_card_hs(card) && max_dtr > card->ext_csd.hs_max_dtr)
|
|
max_dtr = card->ext_csd.hs_max_dtr;
|
|
else if (max_dtr > card->csd.max_dtr)
|
|
max_dtr = card->csd.max_dtr;
|
|
|
|
mmc_set_clock(card->host, max_dtr);
|
|
}
|
|
|
|
/*
|
|
* Select the bus width amoung 4-bit and 8-bit(SDR).
|
|
* If the bus width is changed successfully, return the selected width value.
|
|
* Zero is returned instead of error value if the wide width is not supported.
|
|
*/
|
|
static int mmc_select_bus_width(struct mmc_card *card)
|
|
{
|
|
static const unsigned int ext_csd_bits[] = {
|
|
EXT_CSD_BUS_WIDTH_8,
|
|
EXT_CSD_BUS_WIDTH_4,
|
|
};
|
|
static const unsigned int bus_widths[] = {
|
|
MMC_BUS_WIDTH_8,
|
|
MMC_BUS_WIDTH_4,
|
|
};
|
|
struct mmc_host *host = card->host;
|
|
unsigned int idx, bus_width = 0;
|
|
int err = 0;
|
|
|
|
if (!mmc_can_ext_csd(card) ||
|
|
!(host->caps & (MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA)))
|
|
return 0;
|
|
|
|
idx = (host->caps & MMC_CAP_8_BIT_DATA) ? 0 : 1;
|
|
|
|
/*
|
|
* Unlike SD, MMC cards dont have a configuration register to notify
|
|
* supported bus width. So bus test command should be run to identify
|
|
* the supported bus width or compare the ext csd values of current
|
|
* bus width and ext csd values of 1 bit mode read earlier.
|
|
*/
|
|
for (; idx < ARRAY_SIZE(bus_widths); idx++) {
|
|
/*
|
|
* Host is capable of 8bit transfer, then switch
|
|
* the device to work in 8bit transfer mode. If the
|
|
* mmc switch command returns error then switch to
|
|
* 4bit transfer mode. On success set the corresponding
|
|
* bus width on the host.
|
|
*/
|
|
err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
|
|
EXT_CSD_BUS_WIDTH,
|
|
ext_csd_bits[idx],
|
|
card->ext_csd.generic_cmd6_time);
|
|
if (err)
|
|
continue;
|
|
|
|
bus_width = bus_widths[idx];
|
|
mmc_set_bus_width(host, bus_width);
|
|
|
|
/*
|
|
* If controller can't handle bus width test,
|
|
* compare ext_csd previously read in 1 bit mode
|
|
* against ext_csd at new bus width
|
|
*/
|
|
if (!(host->caps & MMC_CAP_BUS_WIDTH_TEST))
|
|
err = mmc_compare_ext_csds(card, bus_width);
|
|
else
|
|
err = mmc_bus_test(card, bus_width);
|
|
|
|
if (!err) {
|
|
err = bus_width;
|
|
break;
|
|
} else {
|
|
pr_warn("%s: switch to bus width %d failed\n",
|
|
mmc_hostname(host), 1 << bus_width);
|
|
}
|
|
}
|
|
|
|
return err;
|
|
}
|
|
|
|
/*
|
|
* Switch to the high-speed mode
|
|
*/
|
|
static int mmc_select_hs(struct mmc_card *card)
|
|
{
|
|
int err;
|
|
|
|
err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
|
|
EXT_CSD_HS_TIMING, EXT_CSD_TIMING_HS,
|
|
card->ext_csd.generic_cmd6_time, MMC_TIMING_MMC_HS,
|
|
true, true, true);
|
|
if (err)
|
|
pr_warn("%s: switch to high-speed failed, err:%d\n",
|
|
mmc_hostname(card->host), err);
|
|
|
|
return err;
|
|
}
|
|
|
|
/*
|
|
* Activate wide bus and DDR if supported.
|
|
*/
|
|
static int mmc_select_hs_ddr(struct mmc_card *card)
|
|
{
|
|
struct mmc_host *host = card->host;
|
|
u32 bus_width, ext_csd_bits;
|
|
int err = 0;
|
|
|
|
if (!(card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_52))
|
|
return 0;
|
|
|
|
bus_width = host->ios.bus_width;
|
|
if (bus_width == MMC_BUS_WIDTH_1)
|
|
return 0;
|
|
|
|
ext_csd_bits = (bus_width == MMC_BUS_WIDTH_8) ?
|
|
EXT_CSD_DDR_BUS_WIDTH_8 : EXT_CSD_DDR_BUS_WIDTH_4;
|
|
|
|
err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
|
|
EXT_CSD_BUS_WIDTH,
|
|
ext_csd_bits,
|
|
card->ext_csd.generic_cmd6_time,
|
|
MMC_TIMING_MMC_DDR52,
|
|
true, true, true);
|
|
if (err) {
|
|
pr_err("%s: switch to bus width %d ddr failed\n",
|
|
mmc_hostname(host), 1 << bus_width);
|
|
return err;
|
|
}
|
|
|
|
/*
|
|
* eMMC cards can support 3.3V to 1.2V i/o (vccq)
|
|
* signaling.
|
|
*
|
|
* EXT_CSD_CARD_TYPE_DDR_1_8V means 3.3V or 1.8V vccq.
|
|
*
|
|
* 1.8V vccq at 3.3V core voltage (vcc) is not required
|
|
* in the JEDEC spec for DDR.
|
|
*
|
|
* Even (e)MMC card can support 3.3v to 1.2v vccq, but not all
|
|
* host controller can support this, like some of the SDHCI
|
|
* controller which connect to an eMMC device. Some of these
|
|
* host controller still needs to use 1.8v vccq for supporting
|
|
* DDR mode.
|
|
*
|
|
* So the sequence will be:
|
|
* if (host and device can both support 1.2v IO)
|
|
* use 1.2v IO;
|
|
* else if (host and device can both support 1.8v IO)
|
|
* use 1.8v IO;
|
|
* so if host and device can only support 3.3v IO, this is the
|
|
* last choice.
|
|
*
|
|
* WARNING: eMMC rules are NOT the same as SD DDR
|
|
*/
|
|
if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_1_2V) {
|
|
err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_120);
|
|
if (!err)
|
|
return 0;
|
|
}
|
|
|
|
if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_1_8V &&
|
|
host->caps & MMC_CAP_1_8V_DDR)
|
|
err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180);
|
|
|
|
/* make sure vccq is 3.3v after switching disaster */
|
|
if (err)
|
|
err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_330);
|
|
|
|
return err;
|
|
}
|
|
|
|
static int mmc_select_hs400(struct mmc_card *card)
|
|
{
|
|
struct mmc_host *host = card->host;
|
|
unsigned int max_dtr;
|
|
int err = 0;
|
|
u8 val;
|
|
|
|
/*
|
|
* HS400 mode requires 8-bit bus width
|
|
*/
|
|
if (card->ext_csd.strobe_support) {
|
|
if (!(card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400 &&
|
|
host->caps & MMC_CAP_8_BIT_DATA))
|
|
return 0;
|
|
|
|
/* For Enhance Strobe flow. For non Enhance Strobe, signal
|
|
* voltage will not be set.
|
|
*/
|
|
if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200_1_2V)
|
|
err = mmc_set_signal_voltage(host,
|
|
MMC_SIGNAL_VOLTAGE_120);
|
|
|
|
if (err && card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200_1_8V)
|
|
err = mmc_set_signal_voltage(host,
|
|
MMC_SIGNAL_VOLTAGE_180);
|
|
if (err)
|
|
return err;
|
|
} else {
|
|
if (!(card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400 &&
|
|
host->ios.bus_width == MMC_BUS_WIDTH_8))
|
|
return 0;
|
|
}
|
|
|
|
/* Switch card to HS mode */
|
|
val = EXT_CSD_TIMING_HS;
|
|
err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
|
|
EXT_CSD_HS_TIMING, val,
|
|
card->ext_csd.generic_cmd6_time, 0,
|
|
true, false, true);
|
|
if (err) {
|
|
pr_err("%s: switch to high-speed from hs200 failed, err:%d\n",
|
|
mmc_hostname(host), err);
|
|
return err;
|
|
}
|
|
|
|
/* Set host controller to HS timing */
|
|
mmc_set_timing(card->host, MMC_TIMING_MMC_HS);
|
|
|
|
/* Reduce frequency to HS frequency */
|
|
max_dtr = card->ext_csd.hs_max_dtr;
|
|
mmc_set_clock(host, max_dtr);
|
|
|
|
err = mmc_switch_status(card);
|
|
if (err)
|
|
goto out_err;
|
|
|
|
val = EXT_CSD_DDR_BUS_WIDTH_8;
|
|
if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400ES
|
|
&& card->ext_csd.strobe_support) {
|
|
err = mmc_select_bus_width(card);
|
|
if (IS_ERR_VALUE((unsigned long)err))
|
|
return err;
|
|
val |= EXT_CSD_BUS_WIDTH_STROBE;
|
|
}
|
|
|
|
/* Switch card to DDR */
|
|
err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
|
|
EXT_CSD_BUS_WIDTH,
|
|
val,
|
|
card->ext_csd.generic_cmd6_time);
|
|
if (err) {
|
|
pr_err("%s: switch to bus width for hs400 failed, err:%d\n",
|
|
mmc_hostname(host), err);
|
|
return err;
|
|
}
|
|
|
|
/* Switch card to HS400 */
|
|
val = EXT_CSD_TIMING_HS400 |
|
|
card->drive_strength << EXT_CSD_DRV_STR_SHIFT;
|
|
err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
|
|
EXT_CSD_HS_TIMING, val,
|
|
card->ext_csd.generic_cmd6_time, 0,
|
|
true, false, true);
|
|
if (err) {
|
|
pr_err("%s: switch to hs400 failed, err:%d\n",
|
|
mmc_hostname(host), err);
|
|
return err;
|
|
}
|
|
|
|
/* Set host controller to HS400 timing and frequency */
|
|
mmc_set_timing(host, MMC_TIMING_MMC_HS400);
|
|
mmc_set_bus_speed(card);
|
|
|
|
if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400ES
|
|
&& card->ext_csd.strobe_support
|
|
&& host->ops->enhanced_strobe) {
|
|
err = host->ops->enhanced_strobe(host);
|
|
if (!err)
|
|
host->ios.enhanced_strobe = true;
|
|
} else if ((host->caps2 & MMC_CAP2_HS400_POST_TUNING) &&
|
|
host->ops->execute_tuning) {
|
|
err = host->ops->execute_tuning(host,
|
|
MMC_SEND_TUNING_BLOCK_HS200);
|
|
if (err)
|
|
pr_warn("%s: tuning execution failed\n",
|
|
mmc_hostname(host));
|
|
}
|
|
|
|
/*
|
|
* Sending of CMD13 should be done after the host calibration
|
|
* for enhanced_strobe or HS400 mode is completed.
|
|
* Otherwise may see CMD13 timeouts or CRC errors.
|
|
*/
|
|
err = mmc_switch_status(card);
|
|
if (err)
|
|
goto out_err;
|
|
|
|
return 0;
|
|
|
|
out_err:
|
|
pr_err("%s: %s failed, error %d\n", mmc_hostname(card->host),
|
|
__func__, err);
|
|
return err;
|
|
}
|
|
|
|
int mmc_hs200_to_hs400(struct mmc_card *card)
|
|
{
|
|
return mmc_select_hs400(card);
|
|
}
|
|
|
|
int mmc_hs400_to_hs200(struct mmc_card *card)
|
|
{
|
|
struct mmc_host *host = card->host;
|
|
unsigned int max_dtr;
|
|
int err;
|
|
u8 val;
|
|
|
|
/* Switch HS400 to HS DDR */
|
|
val = EXT_CSD_TIMING_HS;
|
|
err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_HS_TIMING,
|
|
val, card->ext_csd.generic_cmd6_time, 0,
|
|
true, false, true);
|
|
if (err)
|
|
goto out_err;
|
|
|
|
mmc_set_timing(host, MMC_TIMING_MMC_DDR52);
|
|
|
|
/* Reduce frequency to HS */
|
|
max_dtr = card->ext_csd.hs_max_dtr;
|
|
mmc_set_clock(host, max_dtr);
|
|
|
|
err = mmc_switch_status(card);
|
|
if (err)
|
|
goto out_err;
|
|
|
|
/* Switch HS DDR to HS */
|
|
err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_BUS_WIDTH,
|
|
EXT_CSD_BUS_WIDTH_8, card->ext_csd.generic_cmd6_time,
|
|
0, true, false, true);
|
|
if (err)
|
|
goto out_err;
|
|
|
|
mmc_set_timing(host, MMC_TIMING_MMC_HS);
|
|
|
|
if (host->ops->hs400_downgrade)
|
|
host->ops->hs400_downgrade(host);
|
|
|
|
err = mmc_switch_status(card);
|
|
if (err)
|
|
goto out_err;
|
|
|
|
/* Switch HS to HS200 */
|
|
val = EXT_CSD_TIMING_HS200 |
|
|
card->drive_strength << EXT_CSD_DRV_STR_SHIFT;
|
|
err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_HS_TIMING,
|
|
val, card->ext_csd.generic_cmd6_time, 0,
|
|
true, false, true);
|
|
if (err)
|
|
goto out_err;
|
|
|
|
mmc_set_timing(host, MMC_TIMING_MMC_HS200);
|
|
|
|
/*
|
|
* For HS200, CRC errors are not a reliable way to know the switch
|
|
* failed. If there really is a problem, we would expect tuning will
|
|
* fail and the result ends up the same.
|
|
*/
|
|
err = __mmc_switch_status(card, false);
|
|
if (err)
|
|
goto out_err;
|
|
|
|
mmc_set_bus_speed(card);
|
|
|
|
/* Prepare tuning for HS400 mode. */
|
|
if (host->ops->prepare_hs400_tuning)
|
|
host->ops->prepare_hs400_tuning(host, &host->ios);
|
|
|
|
return 0;
|
|
|
|
out_err:
|
|
pr_err("%s: %s failed, error %d\n", mmc_hostname(card->host),
|
|
__func__, err);
|
|
return err;
|
|
}
|
|
|
|
static void mmc_select_driver_type(struct mmc_card *card)
|
|
{
|
|
int card_drv_type, drive_strength, drv_type = 0;
|
|
int fixed_drv_type = card->host->fixed_drv_type;
|
|
|
|
card_drv_type = card->ext_csd.raw_driver_strength |
|
|
mmc_driver_type_mask(0);
|
|
|
|
if (fixed_drv_type >= 0)
|
|
drive_strength = card_drv_type & mmc_driver_type_mask(fixed_drv_type)
|
|
? fixed_drv_type : 0;
|
|
else
|
|
drive_strength = mmc_select_drive_strength(card,
|
|
card->ext_csd.hs200_max_dtr,
|
|
card_drv_type, &drv_type);
|
|
|
|
card->drive_strength = drive_strength;
|
|
|
|
if (drv_type)
|
|
mmc_set_driver_type(card->host, drv_type);
|
|
}
|
|
|
|
static int mmc_select_hs400es(struct mmc_card *card)
|
|
{
|
|
struct mmc_host *host = card->host;
|
|
int err = -EINVAL;
|
|
u8 val;
|
|
|
|
if (!(host->caps & MMC_CAP_8_BIT_DATA)) {
|
|
err = -ENOTSUPP;
|
|
goto out_err;
|
|
}
|
|
|
|
if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400_1_2V)
|
|
err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_120);
|
|
|
|
if (err && card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400_1_8V)
|
|
err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180);
|
|
|
|
/* If fails try again during next card power cycle */
|
|
if (err)
|
|
goto out_err;
|
|
|
|
err = mmc_select_bus_width(card);
|
|
if (err != MMC_BUS_WIDTH_8) {
|
|
pr_err("%s: switch to 8bit bus width failed, err:%d\n",
|
|
mmc_hostname(host), err);
|
|
err = err < 0 ? err : -ENOTSUPP;
|
|
goto out_err;
|
|
}
|
|
|
|
/* Switch card to HS mode */
|
|
err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
|
|
EXT_CSD_HS_TIMING, EXT_CSD_TIMING_HS,
|
|
card->ext_csd.generic_cmd6_time, 0,
|
|
true, false, true);
|
|
if (err) {
|
|
pr_err("%s: switch to hs for hs400es failed, err:%d\n",
|
|
mmc_hostname(host), err);
|
|
goto out_err;
|
|
}
|
|
|
|
mmc_set_timing(host, MMC_TIMING_MMC_HS);
|
|
err = mmc_switch_status(card);
|
|
if (err)
|
|
goto out_err;
|
|
|
|
mmc_set_clock(host, card->ext_csd.hs_max_dtr);
|
|
|
|
/* Switch card to DDR with strobe bit */
|
|
val = EXT_CSD_DDR_BUS_WIDTH_8 | EXT_CSD_BUS_WIDTH_STROBE;
|
|
err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
|
|
EXT_CSD_BUS_WIDTH,
|
|
val,
|
|
card->ext_csd.generic_cmd6_time);
|
|
if (err) {
|
|
pr_err("%s: switch to bus width for hs400es failed, err:%d\n",
|
|
mmc_hostname(host), err);
|
|
goto out_err;
|
|
}
|
|
|
|
mmc_select_driver_type(card);
|
|
|
|
/* Switch card to HS400 */
|
|
val = EXT_CSD_TIMING_HS400 |
|
|
card->drive_strength << EXT_CSD_DRV_STR_SHIFT;
|
|
err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
|
|
EXT_CSD_HS_TIMING, val,
|
|
card->ext_csd.generic_cmd6_time, 0,
|
|
true, false, true);
|
|
if (err) {
|
|
pr_err("%s: switch to hs400es failed, err:%d\n",
|
|
mmc_hostname(host), err);
|
|
goto out_err;
|
|
}
|
|
|
|
/* Set host controller to HS400 timing and frequency */
|
|
mmc_set_timing(host, MMC_TIMING_MMC_HS400);
|
|
|
|
/* Controller enable enhanced strobe function */
|
|
host->ios.enhanced_strobe = true;
|
|
if (host->ops->hs400_enhanced_strobe)
|
|
host->ops->hs400_enhanced_strobe(host, &host->ios);
|
|
|
|
err = mmc_switch_status(card);
|
|
if (err)
|
|
goto out_err;
|
|
|
|
return 0;
|
|
|
|
out_err:
|
|
pr_err("%s: %s failed, error %d\n", mmc_hostname(card->host),
|
|
__func__, err);
|
|
return err;
|
|
}
|
|
|
|
/*
|
|
* For device supporting HS200 mode, the following sequence
|
|
* should be done before executing the tuning process.
|
|
* 1. set the desired bus width(4-bit or 8-bit, 1-bit is not supported)
|
|
* 2. switch to HS200 mode
|
|
* 3. set the clock to > 52Mhz and <=200MHz
|
|
*/
|
|
static int mmc_select_hs200(struct mmc_card *card)
|
|
{
|
|
struct mmc_host *host = card->host;
|
|
unsigned int old_timing, old_signal_voltage;
|
|
int err = -EINVAL;
|
|
u8 val;
|
|
|
|
old_signal_voltage = host->ios.signal_voltage;
|
|
if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200_1_2V)
|
|
err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_120);
|
|
|
|
if (err && card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200_1_8V)
|
|
err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180);
|
|
|
|
/* If fails try again during next card power cycle */
|
|
if (err)
|
|
return err;
|
|
|
|
mmc_select_driver_type(card);
|
|
|
|
/*
|
|
* Set the bus width(4 or 8) with host's support and
|
|
* switch to HS200 mode if bus width is set successfully.
|
|
*/
|
|
err = mmc_select_bus_width(card);
|
|
if (err > 0) {
|
|
val = EXT_CSD_TIMING_HS200 |
|
|
card->drive_strength << EXT_CSD_DRV_STR_SHIFT;
|
|
err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
|
|
EXT_CSD_HS_TIMING, val,
|
|
card->ext_csd.generic_cmd6_time, 0,
|
|
true, false, true);
|
|
if (err)
|
|
goto err;
|
|
old_timing = host->ios.timing;
|
|
mmc_set_timing(host, MMC_TIMING_MMC_HS200);
|
|
|
|
/*
|
|
* For HS200, CRC errors are not a reliable way to know the
|
|
* switch failed. If there really is a problem, we would expect
|
|
* tuning will fail and the result ends up the same.
|
|
*/
|
|
err = __mmc_switch_status(card, false);
|
|
|
|
/*
|
|
* mmc_select_timing() assumes timing has not changed if
|
|
* it is a switch error.
|
|
*/
|
|
if (err == -EBADMSG)
|
|
mmc_set_timing(host, old_timing);
|
|
}
|
|
err:
|
|
if (err) {
|
|
/* fall back to the old signal voltage, if fails report error */
|
|
if (mmc_set_signal_voltage(host, old_signal_voltage))
|
|
err = -EIO;
|
|
|
|
pr_err("%s: %s failed, error %d\n", mmc_hostname(card->host),
|
|
__func__, err);
|
|
}
|
|
return err;
|
|
}
|
|
|
|
static int mmc_reboot_notify(struct notifier_block *notify_block,
|
|
unsigned long event, void *unused)
|
|
{
|
|
struct mmc_card *card = container_of(
|
|
notify_block, struct mmc_card, reboot_notify);
|
|
|
|
card->pon_type = (event != SYS_RESTART) ? MMC_LONG_PON : MMC_SHRT_PON;
|
|
|
|
return NOTIFY_OK;
|
|
}
|
|
|
|
/*
|
|
* Activate High Speed, HS200 or HS400ES mode if supported.
|
|
*/
|
|
static int mmc_select_timing(struct mmc_card *card)
|
|
{
|
|
int err = 0;
|
|
|
|
if (!mmc_can_ext_csd(card))
|
|
goto bus_speed;
|
|
|
|
/* For Enhance Strobe HS400 flow */
|
|
if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400ES &&
|
|
card->host->caps & MMC_CAP_8_BIT_DATA) {
|
|
err = mmc_select_hs400(card);
|
|
if (err) {
|
|
pr_err("%s: %s: mmc_select_hs400 failed : %d\n",
|
|
mmc_hostname(card->host), __func__,
|
|
err);
|
|
err = mmc_select_hs400es(card);
|
|
}
|
|
} else if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200) {
|
|
err = mmc_select_hs200(card);
|
|
} else if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS) {
|
|
err = mmc_select_hs(card);
|
|
}
|
|
|
|
if (err && err != -EBADMSG)
|
|
return err;
|
|
|
|
bus_speed:
|
|
/*
|
|
* Set the bus speed to the selected bus timing.
|
|
* If timing is not selected, backward compatible is the default.
|
|
*/
|
|
mmc_set_bus_speed(card);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Execute tuning sequence to seek the proper bus operating
|
|
* conditions for HS200 and HS400, which sends CMD21 to the device.
|
|
*/
|
|
static int mmc_hs200_tuning(struct mmc_card *card)
|
|
{
|
|
struct mmc_host *host = card->host;
|
|
|
|
/*
|
|
* Timing should be adjusted to the HS400 target
|
|
* operation frequency for tuning process
|
|
*/
|
|
if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400 &&
|
|
host->ios.bus_width == MMC_BUS_WIDTH_8)
|
|
mmc_set_timing(host, MMC_TIMING_MMC_HS400);
|
|
|
|
return mmc_execute_tuning(card);
|
|
}
|
|
|
|
static int mmc_select_hs_ddr52(struct mmc_host *host)
|
|
{
|
|
int err;
|
|
|
|
mmc_select_hs(host->card);
|
|
err = mmc_select_bus_width(host->card);
|
|
if (err < 0) {
|
|
pr_err("%s: %s: select_bus_width failed(%d)\n",
|
|
mmc_hostname(host), __func__, err);
|
|
return err;
|
|
}
|
|
|
|
err = mmc_select_hs_ddr(host->card);
|
|
mmc_set_clock(host, MMC_HIGH_52_MAX_DTR);
|
|
|
|
return err;
|
|
}
|
|
|
|
/*
|
|
* Scale down from HS400 to HS in order to allow frequency change.
|
|
* This is needed for cards that doesn't support changing frequency in HS400
|
|
*/
|
|
static int mmc_scale_low(struct mmc_host *host, unsigned long freq)
|
|
{
|
|
int err = 0;
|
|
|
|
mmc_set_timing(host, MMC_TIMING_LEGACY);
|
|
mmc_set_clock(host, MMC_HIGH_26_MAX_DTR);
|
|
|
|
if (host->clk_scaling.lower_bus_speed_mode &
|
|
MMC_SCALING_LOWER_DDR52_MODE) {
|
|
err = mmc_select_hs_ddr52(host);
|
|
if (err)
|
|
pr_err("%s: %s: failed to switch to DDR52: err: %d\n",
|
|
mmc_hostname(host), __func__, err);
|
|
else
|
|
return err;
|
|
}
|
|
|
|
err = mmc_select_hs(host->card);
|
|
if (err) {
|
|
pr_err("%s: %s: scaling low: failed (%d)\n",
|
|
mmc_hostname(host), __func__, err);
|
|
return err;
|
|
}
|
|
|
|
err = mmc_select_bus_width(host->card);
|
|
if (err < 0) {
|
|
pr_err("%s: %s: select_bus_width failed(%d)\n",
|
|
mmc_hostname(host), __func__, err);
|
|
return err;
|
|
}
|
|
|
|
mmc_set_clock(host, freq);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Scale UP from HS to HS200/H400
|
|
*/
|
|
static int mmc_scale_high(struct mmc_host *host)
|
|
{
|
|
int err = 0;
|
|
|
|
if (mmc_card_ddr52(host->card)) {
|
|
mmc_set_timing(host, MMC_TIMING_LEGACY);
|
|
mmc_set_clock(host, MMC_HIGH_26_MAX_DTR);
|
|
}
|
|
|
|
if (!host->card->ext_csd.strobe_support) {
|
|
if (!(host->card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200)) {
|
|
pr_err("%s: %s: card does not support HS200\n",
|
|
mmc_hostname(host), __func__);
|
|
WARN_ON(1);
|
|
return -EPERM;
|
|
}
|
|
|
|
err = mmc_select_hs200(host->card);
|
|
if (err) {
|
|
pr_err("%s: %s: selecting HS200 failed (%d)\n",
|
|
mmc_hostname(host), __func__, err);
|
|
return err;
|
|
}
|
|
|
|
mmc_set_bus_speed(host->card);
|
|
|
|
err = mmc_hs200_tuning(host->card);
|
|
if (err) {
|
|
pr_err("%s: %s: hs200 tuning failed (%d)\n",
|
|
mmc_hostname(host), __func__, err);
|
|
return err;
|
|
}
|
|
|
|
if (!(host->card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400)) {
|
|
pr_debug("%s: card does not support HS400\n",
|
|
mmc_hostname(host));
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
err = mmc_select_hs400(host->card);
|
|
if (err) {
|
|
pr_err("%s: %s: select hs400 failed (%d)\n",
|
|
mmc_hostname(host), __func__, err);
|
|
return err;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int mmc_set_clock_bus_speed(struct mmc_card *card, unsigned long freq)
|
|
{
|
|
int err = 0;
|
|
|
|
if (freq == MMC_HS200_MAX_DTR)
|
|
err = mmc_scale_high(card->host);
|
|
else
|
|
err = mmc_scale_low(card->host, freq);
|
|
|
|
return err;
|
|
}
|
|
|
|
static inline unsigned long mmc_ddr_freq_accommodation(unsigned long freq)
|
|
{
|
|
if (freq == MMC_HIGH_DDR_MAX_DTR)
|
|
return freq;
|
|
|
|
return freq/2;
|
|
}
|
|
|
|
/**
|
|
* mmc_change_bus_speed() - Change MMC card bus frequency at runtime
|
|
* @host: pointer to mmc host structure
|
|
* @freq: pointer to desired frequency to be set
|
|
*
|
|
* Change the MMC card bus frequency at runtime after the card is
|
|
* initialized. Callers are expected to make sure of the card's
|
|
* state (DATA/RCV/TRANSFER) before changing the frequency at runtime.
|
|
*
|
|
* If the frequency to change is greater than max. supported by card,
|
|
* *freq is changed to max. supported by card. If it is less than min.
|
|
* supported by host, *freq is changed to min. supported by host.
|
|
* Host is assumed to be calimed while calling this funciton.
|
|
*/
|
|
static int mmc_change_bus_speed(struct mmc_host *host, unsigned long *freq)
|
|
{
|
|
int err = 0;
|
|
struct mmc_card *card;
|
|
unsigned long actual_freq;
|
|
|
|
card = host->card;
|
|
|
|
if (!card || !freq) {
|
|
err = -EINVAL;
|
|
goto out;
|
|
}
|
|
actual_freq = *freq;
|
|
|
|
WARN_ON(!host->claimed);
|
|
|
|
/*
|
|
* For scaling up/down HS400 we'll need special handling,
|
|
* for other timings we can simply do clock frequency change
|
|
*/
|
|
if (mmc_card_hs400(card) ||
|
|
(!mmc_card_hs200(host->card) && *freq == MMC_HS200_MAX_DTR)) {
|
|
err = mmc_set_clock_bus_speed(card, *freq);
|
|
if (err) {
|
|
pr_err("%s: %s: failed (%d)to set bus and clock speed (freq=%lu)\n",
|
|
mmc_hostname(host), __func__, err, *freq);
|
|
goto out;
|
|
}
|
|
} else if (mmc_card_hs200(host->card)) {
|
|
mmc_set_clock(host, *freq);
|
|
err = mmc_hs200_tuning(host->card);
|
|
if (err) {
|
|
pr_warn("%s: %s: tuning execution failed %d\n",
|
|
mmc_hostname(card->host),
|
|
__func__, err);
|
|
mmc_set_clock(host, host->clk_scaling.curr_freq);
|
|
}
|
|
} else {
|
|
if (mmc_card_ddr52(host->card))
|
|
actual_freq = mmc_ddr_freq_accommodation(*freq);
|
|
mmc_set_clock(host, actual_freq);
|
|
}
|
|
|
|
out:
|
|
return err;
|
|
}
|
|
|
|
static int mmc_change_bus_speed_deferred(struct mmc_host *host,
|
|
unsigned long *freq)
|
|
{
|
|
int err = 0;
|
|
struct mmc_card *card;
|
|
unsigned long actual_freq;
|
|
|
|
card = host->card;
|
|
|
|
if (!card || !freq) {
|
|
err = -EINVAL;
|
|
goto out;
|
|
}
|
|
actual_freq = *freq;
|
|
|
|
WARN_ON(!host->claimed);
|
|
|
|
/*
|
|
* For scaling up/down HS400 we'll need special handling,
|
|
* for other timings we can simply do clock frequency change
|
|
*/
|
|
if (mmc_card_hs400(card) ||
|
|
(!mmc_card_hs200(host->card) && *freq == MMC_HS200_MAX_DTR)) {
|
|
err = mmc_set_clock_bus_speed(card, *freq);
|
|
if (err) {
|
|
pr_err("%s: %s: failed (%d)to set bus and clock speed (freq=%lu)\n",
|
|
mmc_hostname(host), __func__, err, *freq);
|
|
goto out;
|
|
}
|
|
} else if (mmc_card_hs200(host->card)) {
|
|
mmc_set_clock(host, *freq);
|
|
err = mmc_hs200_tuning(host->card);
|
|
if (err) {
|
|
pr_warn("%s: %s: tuning execution failed %d\n",
|
|
mmc_hostname(card->host),
|
|
__func__, err);
|
|
mmc_set_clock(host, host->clk_scaling.curr_freq);
|
|
}
|
|
} else {
|
|
if (mmc_card_ddr52(host->card))
|
|
actual_freq = mmc_ddr_freq_accommodation(*freq);
|
|
mmc_set_clock(host, actual_freq);
|
|
}
|
|
|
|
out:
|
|
return err;
|
|
}
|
|
|
|
void mmc_init_setup_scaling(struct mmc_card *card,
|
|
struct mmc_host *host)
|
|
{
|
|
card->clk_scaling_lowest = host->f_min;
|
|
if ((card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400) ||
|
|
(card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200))
|
|
card->clk_scaling_highest = card->ext_csd.hs200_max_dtr;
|
|
else if ((card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS) ||
|
|
(card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_52))
|
|
card->clk_scaling_highest = card->ext_csd.hs_max_dtr;
|
|
else
|
|
card->clk_scaling_highest = card->csd.max_dtr;
|
|
}
|
|
|
|
/*
|
|
* Handle the detection and initialisation of a card.
|
|
*
|
|
* In the case of a resume, "oldcard" will contain the card
|
|
* we're trying to reinitialise.
|
|
*/
|
|
static int mmc_init_card(struct mmc_host *host, u32 ocr,
|
|
struct mmc_card *oldcard)
|
|
{
|
|
struct mmc_card *card;
|
|
int err;
|
|
u32 cid[4];
|
|
u32 rocr;
|
|
|
|
WARN_ON(!host->claimed);
|
|
|
|
/* Set correct bus mode for MMC before attempting init */
|
|
if (!mmc_host_is_spi(host))
|
|
mmc_set_bus_mode(host, MMC_BUSMODE_OPENDRAIN);
|
|
|
|
/*
|
|
* Since we're changing the OCR value, we seem to
|
|
* need to tell some cards to go back to the idle
|
|
* state. We wait 1ms to give cards time to
|
|
* respond.
|
|
* mmc_go_idle is needed for eMMC that are asleep
|
|
*/
|
|
mmc_go_idle(host);
|
|
|
|
/* The extra bit indicates that we support high capacity */
|
|
err = mmc_send_op_cond(host, ocr | (1 << 30), &rocr);
|
|
if (err) {
|
|
pr_err("%s: %s: mmc_send_op_cond() fails %d\n",
|
|
mmc_hostname(host), __func__, err);
|
|
goto err;
|
|
}
|
|
|
|
/*
|
|
* For SPI, enable CRC as appropriate.
|
|
*/
|
|
if (mmc_host_is_spi(host)) {
|
|
err = mmc_spi_set_crc(host, use_spi_crc);
|
|
if (err)
|
|
goto err;
|
|
}
|
|
|
|
/*
|
|
* Fetch CID from card.
|
|
*/
|
|
err = mmc_send_cid(host, cid);
|
|
if (err) {
|
|
pr_err("%s: %s: mmc_send_cid() fails %d\n",
|
|
mmc_hostname(host), __func__, err);
|
|
goto err;
|
|
}
|
|
|
|
if (oldcard) {
|
|
if (memcmp(cid, oldcard->raw_cid, sizeof(cid)) != 0) {
|
|
err = -ENOENT;
|
|
pr_err("%s: %s: CID memcmp failed %d\n",
|
|
mmc_hostname(host), __func__, err);
|
|
goto err;
|
|
}
|
|
|
|
card = oldcard;
|
|
} else {
|
|
/*
|
|
* Allocate card structure.
|
|
*/
|
|
card = mmc_alloc_card(host, &mmc_type);
|
|
if (IS_ERR(card)) {
|
|
err = PTR_ERR(card);
|
|
pr_err("%s: %s: no memory to allocate for card %d\n",
|
|
mmc_hostname(host), __func__, err);
|
|
goto err;
|
|
}
|
|
|
|
card->ocr = ocr;
|
|
card->type = MMC_TYPE_MMC;
|
|
card->rca = 1;
|
|
memcpy(card->raw_cid, cid, sizeof(card->raw_cid));
|
|
host->card = card;
|
|
card->reboot_notify.notifier_call = mmc_reboot_notify;
|
|
}
|
|
|
|
/*
|
|
* Call the optional HC's init_card function to handle quirks.
|
|
*/
|
|
if (host->ops->init_card)
|
|
host->ops->init_card(host, card);
|
|
|
|
/*
|
|
* For native busses: set card RCA and quit open drain mode.
|
|
*/
|
|
if (!mmc_host_is_spi(host)) {
|
|
err = mmc_set_relative_addr(card);
|
|
if (err) {
|
|
pr_err("%s: %s: mmc_set_relative_addr() fails %d\n",
|
|
mmc_hostname(host), __func__, err);
|
|
goto free_card;
|
|
}
|
|
|
|
mmc_set_bus_mode(host, MMC_BUSMODE_PUSHPULL);
|
|
}
|
|
|
|
if (!oldcard) {
|
|
/*
|
|
* Fetch CSD from card.
|
|
*/
|
|
err = mmc_send_csd(card, card->raw_csd);
|
|
if (err) {
|
|
pr_err("%s: %s: mmc_send_csd() fails %d\n",
|
|
mmc_hostname(host), __func__, err);
|
|
goto free_card;
|
|
}
|
|
|
|
err = mmc_decode_csd(card);
|
|
if (err) {
|
|
pr_err("%s: %s: mmc_decode_csd() fails %d\n",
|
|
mmc_hostname(host), __func__, err);
|
|
goto free_card;
|
|
}
|
|
err = mmc_decode_cid(card);
|
|
if (err) {
|
|
pr_err("%s: %s: mmc_decode_cid() fails %d\n",
|
|
mmc_hostname(host), __func__, err);
|
|
goto free_card;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* handling only for cards supporting DSR and hosts requesting
|
|
* DSR configuration
|
|
*/
|
|
if (card->csd.dsr_imp && host->dsr_req)
|
|
mmc_set_dsr(host);
|
|
|
|
/*
|
|
* Select card, as all following commands rely on that.
|
|
*/
|
|
if (!mmc_host_is_spi(host)) {
|
|
err = mmc_select_card(card);
|
|
if (err) {
|
|
pr_err("%s: %s: mmc_select_card() fails %d\n",
|
|
mmc_hostname(host), __func__, err);
|
|
goto free_card;
|
|
}
|
|
}
|
|
|
|
if (!oldcard) {
|
|
/* Read extended CSD. */
|
|
err = mmc_read_ext_csd(card);
|
|
if (err) {
|
|
pr_err("%s: %s: mmc_read_ext_csd() fails %d\n",
|
|
mmc_hostname(host), __func__, err);
|
|
goto free_card;
|
|
}
|
|
|
|
/*
|
|
* If doing byte addressing, check if required to do sector
|
|
* addressing. Handle the case of <2GB cards needing sector
|
|
* addressing. See section 8.1 JEDEC Standard JED84-A441;
|
|
* ocr register has bit 30 set for sector addressing.
|
|
*/
|
|
if (rocr & BIT(30))
|
|
mmc_card_set_blockaddr(card);
|
|
|
|
/* Erase size depends on CSD and Extended CSD */
|
|
mmc_set_erase_size(card);
|
|
}
|
|
|
|
/* Enable ERASE_GRP_DEF. This bit is lost after a reset or power off. */
|
|
if (card->ext_csd.rev >= 3) {
|
|
err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
|
|
EXT_CSD_ERASE_GROUP_DEF, 1,
|
|
card->ext_csd.generic_cmd6_time);
|
|
|
|
if (err && err != -EBADMSG) {
|
|
pr_err("%s: %s: mmc_switch() for ERASE_GRP_DEF fails %d\n",
|
|
mmc_hostname(host), __func__, err);
|
|
goto free_card;
|
|
}
|
|
|
|
if (err) {
|
|
err = 0;
|
|
/*
|
|
* Just disable enhanced area off & sz
|
|
* will try to enable ERASE_GROUP_DEF
|
|
* during next time reinit
|
|
*/
|
|
card->ext_csd.enhanced_area_offset = -EINVAL;
|
|
card->ext_csd.enhanced_area_size = -EINVAL;
|
|
} else {
|
|
card->ext_csd.erase_group_def = 1;
|
|
/*
|
|
* enable ERASE_GRP_DEF successfully.
|
|
* This will affect the erase size, so
|
|
* here need to reset erase size
|
|
*/
|
|
mmc_set_erase_size(card);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Ensure eMMC user default partition is enabled
|
|
*/
|
|
if (card->ext_csd.part_config & EXT_CSD_PART_CONFIG_ACC_MASK) {
|
|
card->ext_csd.part_config &= ~EXT_CSD_PART_CONFIG_ACC_MASK;
|
|
err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_PART_CONFIG,
|
|
card->ext_csd.part_config,
|
|
card->ext_csd.part_time);
|
|
if (err && err != -EBADMSG) {
|
|
pr_err("%s: %s: mmc_switch() for PART_CONFIG fails %d\n",
|
|
mmc_hostname(host), __func__, err);
|
|
goto free_card;
|
|
}
|
|
card->part_curr = card->ext_csd.part_config &
|
|
EXT_CSD_PART_CONFIG_ACC_MASK;
|
|
}
|
|
|
|
/*
|
|
* Enable power_off_notification byte in the ext_csd register
|
|
*/
|
|
if (card->ext_csd.rev >= 6) {
|
|
err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
|
|
EXT_CSD_POWER_OFF_NOTIFICATION,
|
|
EXT_CSD_POWER_ON,
|
|
card->ext_csd.generic_cmd6_time);
|
|
if (err && err != -EBADMSG) {
|
|
pr_err("%s: %s: mmc_switch() for POWER_ON PON fails %d\n",
|
|
mmc_hostname(host), __func__, err);
|
|
goto free_card;
|
|
}
|
|
|
|
/*
|
|
* The err can be -EBADMSG or 0,
|
|
* so check for success and update the flag
|
|
*/
|
|
if (!err)
|
|
card->ext_csd.power_off_notification = EXT_CSD_POWER_ON;
|
|
}
|
|
|
|
/*
|
|
* Select timing interface
|
|
*/
|
|
err = mmc_select_timing(card);
|
|
if (err) {
|
|
pr_err("%s: %s: mmc_select_timing() fails %d\n",
|
|
mmc_hostname(host), __func__, err);
|
|
goto free_card;
|
|
}
|
|
|
|
if (mmc_card_hs200(card)) {
|
|
err = mmc_hs200_tuning(card);
|
|
if (err)
|
|
goto free_card;
|
|
|
|
err = mmc_select_hs400(card);
|
|
if (err)
|
|
goto free_card;
|
|
} else if (!mmc_card_hs400es(card)) {
|
|
/* Select the desired bus width optionally */
|
|
err = mmc_select_bus_width(card);
|
|
if (err > 0 && mmc_card_hs(card)) {
|
|
err = mmc_select_hs_ddr(card);
|
|
if (err)
|
|
goto free_card;
|
|
}
|
|
}
|
|
|
|
mmc_init_setup_scaling(card, host);
|
|
|
|
/*
|
|
* Choose the power class with selected bus interface
|
|
*/
|
|
mmc_select_powerclass(card);
|
|
|
|
/*
|
|
* Enable HPI feature (if supported)
|
|
*/
|
|
if (card->ext_csd.hpi) {
|
|
err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
|
|
EXT_CSD_HPI_MGMT, 1,
|
|
card->ext_csd.generic_cmd6_time);
|
|
if (err && err != -EBADMSG) {
|
|
pr_err("%s: %s: mmc_switch() for HPI_MGMT fails %d\n",
|
|
mmc_hostname(host), __func__, err);
|
|
goto free_card;
|
|
}
|
|
if (err) {
|
|
pr_warn("%s: Enabling HPI failed\n",
|
|
mmc_hostname(card->host));
|
|
card->ext_csd.hpi_en = 0;
|
|
err = 0;
|
|
} else {
|
|
card->ext_csd.hpi_en = 1;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* If cache size is higher than 0, this indicates
|
|
* the existence of cache and it can be turned on.
|
|
*/
|
|
if (!mmc_card_broken_hpi(card) && card->ext_csd.cache_size > 0) {
|
|
if (card->ext_csd.hpi_en &&
|
|
(!(card->quirks & MMC_QUIRK_CACHE_DISABLE))) {
|
|
err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
|
|
EXT_CSD_CACHE_CTRL, 1,
|
|
card->ext_csd.generic_cmd6_time);
|
|
if (err && err != -EBADMSG) {
|
|
pr_err("%s: %s: fail on CACHE_CTRL ON %d\n",
|
|
mmc_hostname(host), __func__, err);
|
|
goto free_card;
|
|
}
|
|
|
|
/*
|
|
* Only if no error, cache is turned on successfully.
|
|
*/
|
|
if (err) {
|
|
pr_warn("%s: Cache is supported, but failed to turn on (%d)\n",
|
|
mmc_hostname(card->host), err);
|
|
card->ext_csd.cache_ctrl = 0;
|
|
err = 0;
|
|
} else {
|
|
card->ext_csd.cache_ctrl = 1;
|
|
}
|
|
} else {
|
|
/*
|
|
* mmc standard doesn't say what is the card default
|
|
* value for EXT_CSD_CACHE_CTRL.
|
|
* Hence, cache may be enabled by default by
|
|
* card vendors.
|
|
* Thus, it is best to explicitly disable cache in case
|
|
* we want to avoid cache.
|
|
*/
|
|
err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
|
|
EXT_CSD_CACHE_CTRL, 0,
|
|
card->ext_csd.generic_cmd6_time);
|
|
if (err) {
|
|
pr_err("%s: %s: fail on CACHE_CTRL OFF %d\n",
|
|
mmc_hostname(host), __func__, err);
|
|
goto free_card;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Enable Command Queue if supported. Note that Packed Commands cannot
|
|
* be used with Command Queue.
|
|
*/
|
|
card->ext_csd.cmdq_en = false;
|
|
if (card->ext_csd.cmdq_support && host->caps2 & MMC_CAP2_CQE) {
|
|
err = mmc_cmdq_enable(card);
|
|
if (err && err != -EBADMSG)
|
|
goto free_card;
|
|
if (err) {
|
|
pr_warn("%s: Enabling CMDQ failed\n",
|
|
mmc_hostname(card->host));
|
|
card->ext_csd.cmdq_support = false;
|
|
card->ext_csd.cmdq_depth = 0;
|
|
err = 0;
|
|
}
|
|
}
|
|
/*
|
|
* In some cases (e.g. RPMB or mmc_test), the Command Queue must be
|
|
* disabled for a time, so a flag is needed to indicate to re-enable the
|
|
* Command Queue.
|
|
*/
|
|
card->reenable_cmdq = card->ext_csd.cmdq_en;
|
|
|
|
if (card->ext_csd.cmdq_en && !host->cqe_enabled) {
|
|
err = host->cqe_ops->cqe_enable(host, card);
|
|
if (err) {
|
|
pr_err("%s: Failed to enable CQE, error %d\n",
|
|
mmc_hostname(host), err);
|
|
} else {
|
|
host->cqe_enabled = true;
|
|
pr_info("%s: Command Queue Engine enabled\n",
|
|
mmc_hostname(host));
|
|
}
|
|
}
|
|
|
|
if (host->caps2 & MMC_CAP2_AVOID_3_3V &&
|
|
host->ios.signal_voltage == MMC_SIGNAL_VOLTAGE_330) {
|
|
pr_err("%s: Host failed to negotiate down from 3.3V\n",
|
|
mmc_hostname(host));
|
|
err = -EINVAL;
|
|
goto free_card;
|
|
}
|
|
|
|
if (!oldcard)
|
|
host->card = card;
|
|
if (host->ops->enter_dbg_mode)
|
|
host->ops->enter_dbg_mode(host);
|
|
|
|
return 0;
|
|
|
|
free_card:
|
|
if (!oldcard) {
|
|
host->card = NULL;
|
|
mmc_remove_card(card);
|
|
}
|
|
err:
|
|
return err;
|
|
}
|
|
|
|
static int mmc_can_sleepawake(struct mmc_host *host)
|
|
{
|
|
return host && (host->caps2 & MMC_CAP2_SLEEP_AWAKE) && host->card &&
|
|
(host->card->ext_csd.rev >= 3);
|
|
}
|
|
|
|
static int mmc_sleepawake(struct mmc_host *host, bool sleep)
|
|
{
|
|
struct mmc_command cmd = {};
|
|
struct mmc_card *card = host->card;
|
|
unsigned int timeout_ms = DIV_ROUND_UP(card->ext_csd.sa_timeout, 10000);
|
|
int err;
|
|
|
|
/* Re-tuning can't be done once the card is deselected */
|
|
mmc_retune_hold(host);
|
|
|
|
if (sleep) {
|
|
err = mmc_deselect_cards(host);
|
|
if (err)
|
|
goto out_release;
|
|
}
|
|
|
|
cmd.opcode = MMC_SLEEP_AWAKE;
|
|
cmd.arg = card->rca << 16;
|
|
if (sleep)
|
|
cmd.arg |= 1 << 15;
|
|
|
|
/*
|
|
* If the max_busy_timeout of the host is specified, validate it against
|
|
* the sleep cmd timeout. A failure means we need to prevent the host
|
|
* from doing hw busy detection, which is done by converting to a R1
|
|
* response instead of a R1B. Note, some hosts requires R1B, which also
|
|
* means they are on their own when it comes to deal with the busy
|
|
* timeout.
|
|
*/
|
|
if (!(host->caps & MMC_CAP_NEED_RSP_BUSY) && host->max_busy_timeout &&
|
|
(timeout_ms > host->max_busy_timeout)) {
|
|
cmd.flags = MMC_RSP_R1 | MMC_CMD_AC;
|
|
} else {
|
|
cmd.flags = MMC_RSP_R1B | MMC_CMD_AC;
|
|
cmd.busy_timeout = timeout_ms;
|
|
}
|
|
|
|
err = mmc_wait_for_cmd(host, &cmd, 0);
|
|
if (err)
|
|
goto out_release;
|
|
|
|
/*
|
|
* If the host does not wait while the card signals busy, then we will
|
|
* will have to wait the sleep/awake timeout. Note, we cannot use the
|
|
* SEND_STATUS command to poll the status because that command (and most
|
|
* others) is invalid while the card sleeps.
|
|
*/
|
|
if (!cmd.busy_timeout || !(host->caps & MMC_CAP_WAIT_WHILE_BUSY))
|
|
mmc_delay(timeout_ms);
|
|
|
|
if (!sleep)
|
|
err = mmc_select_card(card);
|
|
|
|
out_release:
|
|
mmc_retune_release(host);
|
|
return err;
|
|
}
|
|
|
|
static int mmc_can_poweroff_notify(const struct mmc_card *card)
|
|
{
|
|
return card &&
|
|
mmc_card_mmc(card) &&
|
|
(card->ext_csd.power_off_notification == EXT_CSD_POWER_ON);
|
|
}
|
|
|
|
static int mmc_poweroff_notify(struct mmc_card *card, unsigned int notify_type)
|
|
{
|
|
unsigned int timeout = card->ext_csd.generic_cmd6_time;
|
|
int err;
|
|
|
|
/* Use EXT_CSD_POWER_OFF_SHORT as default notification type. */
|
|
if (notify_type == EXT_CSD_POWER_OFF_LONG)
|
|
timeout = card->ext_csd.power_off_longtime;
|
|
|
|
err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
|
|
EXT_CSD_POWER_OFF_NOTIFICATION,
|
|
notify_type, timeout, 0, true, false, false);
|
|
if (err)
|
|
pr_err("%s: Power Off Notification timed out, %u\n",
|
|
mmc_hostname(card->host), timeout);
|
|
|
|
/* Disable the power off notification after the switch operation. */
|
|
card->ext_csd.power_off_notification = EXT_CSD_NO_POWER_NOTIFICATION;
|
|
|
|
return err;
|
|
}
|
|
|
|
int mmc_send_pon(struct mmc_card *card)
|
|
{
|
|
int err = 0;
|
|
struct mmc_host *host = card->host;
|
|
|
|
if (!mmc_can_poweroff_notify(card))
|
|
goto out;
|
|
|
|
mmc_get_card(card, NULL);
|
|
if (card->pon_type & MMC_LONG_PON)
|
|
err = mmc_poweroff_notify(host->card, EXT_CSD_POWER_OFF_LONG);
|
|
else if (card->pon_type & MMC_SHRT_PON)
|
|
err = mmc_poweroff_notify(host->card, EXT_CSD_POWER_OFF_SHORT);
|
|
if (err)
|
|
pr_warn("%s: error %d sending PON type %u\n",
|
|
mmc_hostname(host), err, card->pon_type);
|
|
mmc_put_card(card, NULL);
|
|
out:
|
|
return err;
|
|
}
|
|
|
|
/*
|
|
* Host is being removed. Free up the current card.
|
|
*/
|
|
static void mmc_remove(struct mmc_host *host)
|
|
{
|
|
mmc_exit_clk_scaling(host);
|
|
unregister_reboot_notifier(&host->card->reboot_notify);
|
|
mmc_remove_card(host->card);
|
|
mmc_claim_host(host);
|
|
host->card = NULL;
|
|
mmc_release_host(host);
|
|
}
|
|
|
|
/*
|
|
* Card detection - card is alive.
|
|
*/
|
|
static int mmc_alive(struct mmc_host *host)
|
|
{
|
|
return mmc_send_status(host->card, NULL);
|
|
}
|
|
|
|
/*
|
|
* Card detection callback from host.
|
|
*/
|
|
static void mmc_detect(struct mmc_host *host)
|
|
{
|
|
int err;
|
|
|
|
mmc_get_card(host->card, NULL);
|
|
|
|
/*
|
|
* Just check if our card has been removed.
|
|
*/
|
|
err = _mmc_detect_card_removed(host);
|
|
|
|
mmc_put_card(host->card, NULL);
|
|
|
|
if (err) {
|
|
mmc_remove(host);
|
|
|
|
mmc_claim_host(host);
|
|
mmc_detach_bus(host);
|
|
mmc_power_off(host);
|
|
mmc_release_host(host);
|
|
}
|
|
}
|
|
|
|
static int mmc_cache_card_ext_csd(struct mmc_host *host)
|
|
{
|
|
int err;
|
|
u8 *ext_csd;
|
|
struct mmc_card *card = host->card;
|
|
|
|
err = mmc_get_ext_csd(card, &ext_csd);
|
|
if (err || !ext_csd) {
|
|
pr_err("%s: %s: mmc_get_ext_csd failed (%d)\n",
|
|
mmc_hostname(host), __func__, err);
|
|
return err;
|
|
}
|
|
|
|
/* only cache read/write fields that the sw changes */
|
|
card->ext_csd.raw_ext_csd_cmdq = ext_csd[EXT_CSD_CMDQ_MODE_EN];
|
|
card->ext_csd.raw_ext_csd_cache_ctrl = ext_csd[EXT_CSD_CACHE_CTRL];
|
|
card->ext_csd.raw_ext_csd_bus_width = ext_csd[EXT_CSD_BUS_WIDTH];
|
|
card->ext_csd.raw_ext_csd_hs_timing = ext_csd[EXT_CSD_HS_TIMING];
|
|
|
|
kfree(ext_csd);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int mmc_test_awake_ext_csd(struct mmc_host *host)
|
|
{
|
|
int err;
|
|
u8 *ext_csd;
|
|
struct mmc_card *card = host->card;
|
|
|
|
err = mmc_get_ext_csd(card, &ext_csd);
|
|
if (err) {
|
|
pr_err("%s: %s: mmc_get_ext_csd failed (%d)\n",
|
|
mmc_hostname(host), __func__, err);
|
|
return err;
|
|
}
|
|
|
|
/* only compare read/write fields that the sw changes */
|
|
pr_debug("%s: %s: type(cached:current) cmdq(%d:%d) cache_ctrl(%d:%d) bus_width (%d:%d) timing(%d:%d)\n",
|
|
mmc_hostname(host), __func__,
|
|
card->ext_csd.raw_ext_csd_cmdq,
|
|
ext_csd[EXT_CSD_CMDQ_MODE_EN],
|
|
card->ext_csd.raw_ext_csd_cache_ctrl,
|
|
ext_csd[EXT_CSD_CACHE_CTRL],
|
|
card->ext_csd.raw_ext_csd_bus_width,
|
|
ext_csd[EXT_CSD_BUS_WIDTH],
|
|
card->ext_csd.raw_ext_csd_hs_timing,
|
|
ext_csd[EXT_CSD_HS_TIMING]);
|
|
|
|
err = !((card->ext_csd.raw_ext_csd_cmdq ==
|
|
ext_csd[EXT_CSD_CMDQ_MODE_EN]) &&
|
|
(card->ext_csd.raw_ext_csd_cache_ctrl ==
|
|
ext_csd[EXT_CSD_CACHE_CTRL]) &&
|
|
(card->ext_csd.raw_ext_csd_bus_width ==
|
|
ext_csd[EXT_CSD_BUS_WIDTH]) &&
|
|
(card->ext_csd.raw_ext_csd_hs_timing ==
|
|
ext_csd[EXT_CSD_HS_TIMING]));
|
|
|
|
kfree(ext_csd);
|
|
|
|
return err;
|
|
}
|
|
|
|
static bool _mmc_cache_enabled(struct mmc_host *host)
|
|
{
|
|
return host->card->ext_csd.cache_size > 0 &&
|
|
host->card->ext_csd.cache_ctrl & 1;
|
|
}
|
|
|
|
static int _mmc_suspend(struct mmc_host *host, bool is_suspend)
|
|
{
|
|
int err = 0;
|
|
|
|
err = mmc_suspend_clk_scaling(host);
|
|
if (err) {
|
|
pr_err("%s: %s: fail to suspend clock scaling (%d)\n",
|
|
mmc_hostname(host), __func__, err);
|
|
return err;
|
|
}
|
|
|
|
mmc_claim_host(host);
|
|
|
|
mmc_log_string(host, "Enter\n");
|
|
|
|
if (mmc_card_suspended(host->card))
|
|
goto out;
|
|
|
|
err = mmc_flush_cache(host->card);
|
|
if (err)
|
|
goto out;
|
|
|
|
if (mmc_can_sleepawake(host)) {
|
|
memcpy(&host->cached_ios, &host->ios, sizeof(host->cached_ios));
|
|
mmc_cache_card_ext_csd(host);
|
|
err = mmc_sleepawake(host, true);
|
|
} else if (!mmc_host_is_spi(host)) {
|
|
err = mmc_deselect_cards(host);
|
|
}
|
|
|
|
if (!err) {
|
|
mmc_power_off(host);
|
|
mmc_card_set_suspended(host->card);
|
|
}
|
|
out:
|
|
mmc_log_string(host, "Exit err: %d\n", err);
|
|
mmc_release_host(host);
|
|
if (err)
|
|
mmc_resume_clk_scaling(host);
|
|
return err;
|
|
}
|
|
|
|
static int mmc_partial_init(struct mmc_host *host)
|
|
{
|
|
int err = 0;
|
|
struct mmc_card *card = host->card;
|
|
|
|
pr_debug("%s: %s: starting partial init\n",
|
|
mmc_hostname(host), __func__);
|
|
|
|
mmc_set_bus_width(host, host->cached_ios.bus_width);
|
|
mmc_set_timing(host, host->cached_ios.timing);
|
|
mmc_set_clock(host, host->cached_ios.clock);
|
|
mmc_set_bus_mode(host, host->cached_ios.bus_mode);
|
|
|
|
if (mmc_card_hs400(card)) {
|
|
if (card->ext_csd.strobe_support && host->ops->enhanced_strobe)
|
|
err = host->ops->enhanced_strobe(host);
|
|
else if (host->ops->execute_tuning)
|
|
err = host->ops->execute_tuning(host,
|
|
MMC_SEND_TUNING_BLOCK_HS200);
|
|
} else if (mmc_card_hs200(card) && host->ops->execute_tuning) {
|
|
err = host->ops->execute_tuning(host,
|
|
MMC_SEND_TUNING_BLOCK_HS200);
|
|
if (err)
|
|
pr_warn("%s: %s: tuning execution failed (%d)\n",
|
|
mmc_hostname(host), __func__, err);
|
|
}
|
|
|
|
/*
|
|
* The ext_csd is read to make sure the card did not went through
|
|
* Power-failure during sleep period.
|
|
* A subset of the W/E_P, W/C_P register will be tested. In case
|
|
* these registers values are different from the values that were
|
|
* cached during suspend, we will conclude that a Power-failure occurred
|
|
* and will do full initialization sequence.
|
|
* In addition, full init sequence also transfer ext_csd before moving
|
|
* to CMDQ mode which has a side affect of configuring SDHCI registers
|
|
* which needed to be done before moving to CMDQ mode. The same
|
|
* registers need to be configured for partial init.
|
|
*/
|
|
err = mmc_test_awake_ext_csd(host);
|
|
if (err) {
|
|
pr_debug("%s: %s: fail on ext_csd read (%d)\n",
|
|
mmc_hostname(host), __func__, err);
|
|
goto out;
|
|
}
|
|
pr_debug("%s: %s: reading and comparing ext_csd successful\n",
|
|
mmc_hostname(host), __func__);
|
|
|
|
/*
|
|
* Enable Command Queue if supported. Note that Packed Commands cannot
|
|
* be used with Command Queue.
|
|
*/
|
|
card->ext_csd.cmdq_en = false;
|
|
if (card->ext_csd.cmdq_support && host->caps2 & MMC_CAP2_CQE) {
|
|
err = mmc_cmdq_enable(card);
|
|
if (err) {
|
|
pr_warn("%s: Enabling CMDQ failed\n",
|
|
mmc_hostname(card->host));
|
|
card->ext_csd.cmdq_support = false;
|
|
card->ext_csd.cmdq_depth = 0;
|
|
goto out;
|
|
}
|
|
}
|
|
/*
|
|
* In some cases (e.g. RPMB or mmc_test), the Command Queue must be
|
|
* disabled for a time, so a flag is needed to indicate to re-enable the
|
|
* Command Queue.
|
|
*/
|
|
card->reenable_cmdq = card->ext_csd.cmdq_en;
|
|
|
|
if (card->ext_csd.cmdq_en && !host->cqe_enabled) {
|
|
err = host->cqe_ops->cqe_enable(host, card);
|
|
if (err) {
|
|
pr_err("%s: Failed to enable CQE, error %d\n",
|
|
mmc_hostname(host), err);
|
|
} else {
|
|
host->cqe_enabled = true;
|
|
pr_debug("%s: Command Queue Engine enabled\n",
|
|
mmc_hostname(host));
|
|
}
|
|
}
|
|
out:
|
|
pr_debug("%s: %s: done partial init (%d)\n",
|
|
mmc_hostname(host), __func__, err);
|
|
return err;
|
|
}
|
|
|
|
/*
|
|
* Suspend callback
|
|
*/
|
|
static int mmc_suspend(struct mmc_host *host)
|
|
{
|
|
int err;
|
|
ktime_t start = ktime_get();
|
|
|
|
err = _mmc_suspend(host, true);
|
|
if (!err) {
|
|
pm_runtime_disable(&host->card->dev);
|
|
pm_runtime_set_suspended(&host->card->dev);
|
|
}
|
|
|
|
trace_mmc_suspend(mmc_hostname(host), err,
|
|
ktime_to_us(ktime_sub(ktime_get(), start)));
|
|
return err;
|
|
}
|
|
|
|
/*
|
|
* This function tries to determine if the same card is still present
|
|
* and, if so, restore all state to it.
|
|
*/
|
|
static int _mmc_resume(struct mmc_host *host)
|
|
{
|
|
int err = 0;
|
|
int retries = 3;
|
|
|
|
mmc_claim_host(host);
|
|
|
|
if (!mmc_card_suspended(host->card)) {
|
|
mmc_release_host(host);
|
|
return err;
|
|
}
|
|
|
|
mmc_log_string(host, "Enter\n");
|
|
mmc_power_up(host, host->card->ocr);
|
|
while (retries) {
|
|
if (mmc_can_sleepawake(host)) {
|
|
err = mmc_sleepawake(host, false);
|
|
if (!err)
|
|
err = mmc_partial_init(host);
|
|
if (err)
|
|
pr_err("%s: %s: awake failed (%d), fallback to full init\n",
|
|
mmc_hostname(host), __func__,
|
|
err);
|
|
}
|
|
if (!mmc_can_sleepawake(host) || err) {
|
|
err = mmc_init_card(host, host->card->ocr, host->card);
|
|
if (err) {
|
|
pr_err("%s: MMC card re-init failed rc = %d (retries = %d)\n",
|
|
mmc_hostname(host), err,
|
|
retries);
|
|
retries--;
|
|
mmc_power_off(host);
|
|
usleep_range(5000, 5500);
|
|
mmc_power_up(host, host->card->ocr);
|
|
mmc_select_voltage(host, host->card->ocr);
|
|
continue;
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
mmc_card_clr_suspended(host->card);
|
|
|
|
mmc_log_string(host, "Exit err %d\n", err);
|
|
mmc_release_host(host);
|
|
|
|
err = mmc_resume_clk_scaling(host);
|
|
if (err)
|
|
pr_err("%s: %s: fail to resume clock scaling (%d)\n",
|
|
mmc_hostname(host), __func__, err);
|
|
|
|
return err;
|
|
}
|
|
|
|
static int _mmc_deferred_resume(struct mmc_host *host)
|
|
{
|
|
int err = 0;
|
|
|
|
if (!mmc_card_suspended(host->card)) {
|
|
mmc_release_host(host);
|
|
goto out;
|
|
}
|
|
|
|
mmc_log_string(host, "Enter\n");
|
|
mmc_power_up(host, host->card->ocr);
|
|
err = mmc_init_card(host, host->card->ocr, host->card);
|
|
mmc_card_clr_suspended(host->card);
|
|
|
|
mmc_log_string(host, "Exit err %d\n", err);
|
|
|
|
err = mmc_resume_clk_scaling(host);
|
|
if (err)
|
|
pr_err("%s: %s: fail to resume clock scaling (%d)\n",
|
|
mmc_hostname(host), __func__, err);
|
|
out:
|
|
return err;
|
|
}
|
|
|
|
/*
|
|
* Shutdown callback
|
|
*/
|
|
static int mmc_shutdown(struct mmc_host *host)
|
|
{
|
|
int err = 0;
|
|
struct mmc_card *card = host->card;
|
|
|
|
/*
|
|
* In a specific case for poweroff notify, we need to resume the card
|
|
* before we can shutdown it properly.
|
|
*/
|
|
if (mmc_can_poweroff_notify(host->card) &&
|
|
!(host->caps2 & MMC_CAP2_FULL_PWR_CYCLE))
|
|
err = _mmc_resume(host);
|
|
|
|
/*
|
|
* Exit clock scaling so that it doesn't kick in after
|
|
* power off notification is sent
|
|
*/
|
|
if (host->caps2 & MMC_CAP2_CLK_SCALE)
|
|
mmc_exit_clk_scaling(host);
|
|
|
|
/* send power off notification */
|
|
if (mmc_card_mmc(card))
|
|
mmc_send_pon(card);
|
|
|
|
mmc_log_string(host, "done err %d\n", err);
|
|
return err;
|
|
}
|
|
|
|
/*
|
|
* Callback for resume.
|
|
*/
|
|
static int mmc_resume(struct mmc_host *host)
|
|
{
|
|
int err = 0;
|
|
ktime_t start = ktime_get();
|
|
|
|
err = _mmc_resume(host);
|
|
pm_runtime_set_active(&host->card->dev);
|
|
pm_runtime_mark_last_busy(&host->card->dev);
|
|
pm_runtime_enable(&host->card->dev);
|
|
trace_mmc_resume(mmc_hostname(host), err,
|
|
ktime_to_us(ktime_sub(ktime_get(), start)));
|
|
|
|
mmc_log_string(host, "Done\n");
|
|
|
|
return err;
|
|
}
|
|
|
|
/*
|
|
* Callback for deferred resume.
|
|
*/
|
|
static int mmc_deferred_resume(struct mmc_host *host)
|
|
{
|
|
int err = 0;
|
|
|
|
err = _mmc_deferred_resume(host);
|
|
pm_runtime_set_active(&host->card->dev);
|
|
pm_runtime_mark_last_busy(&host->card->dev);
|
|
pm_runtime_enable(&host->card->dev);
|
|
|
|
mmc_log_string(host, "Done\n");
|
|
|
|
return err;
|
|
}
|
|
|
|
/*
|
|
* Callback for runtime_suspend.
|
|
*/
|
|
static int mmc_runtime_suspend(struct mmc_host *host)
|
|
{
|
|
int err;
|
|
ktime_t start = ktime_get();
|
|
|
|
if (!(host->caps & MMC_CAP_AGGRESSIVE_PM))
|
|
return 0;
|
|
|
|
err = _mmc_suspend(host, true);
|
|
if (err)
|
|
pr_err("%s: error %d doing aggressive suspend\n",
|
|
mmc_hostname(host), err);
|
|
trace_mmc_runtime_suspend(mmc_hostname(host), err,
|
|
ktime_to_us(ktime_sub(ktime_get(), start)));
|
|
|
|
mmc_log_string(host, "done err %d\n", err);
|
|
return err;
|
|
}
|
|
|
|
/*
|
|
* Callback for runtime_resume.
|
|
*/
|
|
static int mmc_runtime_resume(struct mmc_host *host)
|
|
{
|
|
int err;
|
|
ktime_t start = ktime_get();
|
|
|
|
err = _mmc_resume(host);
|
|
if (err && err != -ENOMEDIUM)
|
|
pr_err("%s: error %d doing runtime resume\n",
|
|
mmc_hostname(host), err);
|
|
|
|
trace_mmc_runtime_resume(mmc_hostname(host), err,
|
|
ktime_to_us(ktime_sub(ktime_get(), start)));
|
|
mmc_log_string(host, "done err %d\n", err);
|
|
return 0;
|
|
}
|
|
|
|
static int mmc_can_reset(struct mmc_card *card)
|
|
{
|
|
u8 rst_n_function;
|
|
|
|
rst_n_function = card->ext_csd.rst_n_function;
|
|
if ((rst_n_function & EXT_CSD_RST_N_EN_MASK) != EXT_CSD_RST_N_ENABLED)
|
|
return 0;
|
|
return 1;
|
|
}
|
|
|
|
static int _mmc_hw_reset(struct mmc_host *host)
|
|
{
|
|
struct mmc_card *card = host->card;
|
|
int ret;
|
|
|
|
/*
|
|
* In the case of recovery, we can't expect flushing the cache to work
|
|
* always, but we have a go and ignore errors.
|
|
*/
|
|
mmc_flush_cache(host->card);
|
|
|
|
if ((host->caps & MMC_CAP_HW_RESET) && host->ops->hw_reset &&
|
|
mmc_can_reset(card)) {
|
|
/* If the card accept RST_n signal, send it. */
|
|
mmc_set_clock(host, host->f_init);
|
|
host->ops->hw_reset(host);
|
|
/*
|
|
* Do a brute force power cycle as some controller do not
|
|
* have gpio support to power cycle card
|
|
*/
|
|
mmc_power_cycle(host, card->ocr);
|
|
/* Set initial state and call mmc_set_ios */
|
|
mmc_set_initial_state(host);
|
|
} else {
|
|
/* Do a brute force power cycle */
|
|
mmc_power_cycle(host, card->ocr);
|
|
mmc_pwrseq_reset(host);
|
|
}
|
|
|
|
/* Suspend clk scaling to avoid switching frequencies intermittently */
|
|
ret = mmc_suspend_clk_scaling(host);
|
|
if (ret) {
|
|
pr_err("%s: %s: fail to suspend clock scaling (%d)\n",
|
|
mmc_hostname(host), __func__, ret);
|
|
return ret;
|
|
}
|
|
|
|
if (host->inlinecrypt_support)
|
|
host->inlinecrypt_reset_needed = true;
|
|
|
|
ret = mmc_init_card(host, host->card->ocr, host->card);
|
|
if (ret) {
|
|
pr_err("%s: %s: mmc_init_card failed (%d)\n",
|
|
mmc_hostname(host), __func__, ret);
|
|
return ret;
|
|
}
|
|
|
|
ret = mmc_resume_clk_scaling(host);
|
|
if (ret) {
|
|
pr_err("%s: %s: fail to resume clock scaling (%d)\n",
|
|
mmc_hostname(host), __func__, ret);
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static const struct mmc_bus_ops mmc_ops = {
|
|
.remove = mmc_remove,
|
|
.detect = mmc_detect,
|
|
.suspend = mmc_suspend,
|
|
.resume = mmc_resume,
|
|
.deferred_resume = mmc_deferred_resume,
|
|
.runtime_suspend = mmc_runtime_suspend,
|
|
.runtime_resume = mmc_runtime_resume,
|
|
.alive = mmc_alive,
|
|
.shutdown = mmc_shutdown,
|
|
.hw_reset = _mmc_hw_reset,
|
|
.cache_enabled = _mmc_cache_enabled,
|
|
.change_bus_speed = mmc_change_bus_speed,
|
|
.change_bus_speed_deferred = mmc_change_bus_speed_deferred,
|
|
};
|
|
|
|
/*
|
|
* Starting point for MMC card init.
|
|
*/
|
|
int mmc_attach_mmc(struct mmc_host *host)
|
|
{
|
|
int err;
|
|
u32 ocr, rocr;
|
|
|
|
WARN_ON(!host->claimed);
|
|
|
|
/* Set correct bus mode for MMC before attempting attach */
|
|
if (!mmc_host_is_spi(host))
|
|
mmc_set_bus_mode(host, MMC_BUSMODE_OPENDRAIN);
|
|
|
|
err = mmc_send_op_cond(host, 0, &ocr);
|
|
if (err)
|
|
return err;
|
|
|
|
mmc_attach_bus(host, &mmc_ops);
|
|
if (host->ocr_avail_mmc)
|
|
host->ocr_avail = host->ocr_avail_mmc;
|
|
|
|
/*
|
|
* We need to get OCR a different way for SPI.
|
|
*/
|
|
if (mmc_host_is_spi(host)) {
|
|
err = mmc_spi_read_ocr(host, 1, &ocr);
|
|
if (err)
|
|
goto err;
|
|
}
|
|
|
|
rocr = mmc_select_voltage(host, ocr);
|
|
|
|
/*
|
|
* Can we support the voltage of the card?
|
|
*/
|
|
if (!rocr) {
|
|
err = -EINVAL;
|
|
goto err;
|
|
}
|
|
|
|
/*
|
|
* Detect and init the card.
|
|
*/
|
|
err = mmc_init_card(host, rocr, NULL);
|
|
if (err)
|
|
goto err;
|
|
|
|
mmc_release_host(host);
|
|
err = mmc_add_card(host->card);
|
|
if (err)
|
|
goto remove_card;
|
|
|
|
mmc_claim_host(host);
|
|
err = mmc_init_clk_scaling(host);
|
|
if (err) {
|
|
mmc_release_host(host);
|
|
goto remove_card;
|
|
}
|
|
|
|
register_reboot_notifier(&host->card->reboot_notify);
|
|
|
|
return 0;
|
|
|
|
remove_card:
|
|
mmc_remove_card(host->card);
|
|
mmc_claim_host(host);
|
|
host->card = NULL;
|
|
err:
|
|
mmc_detach_bus(host);
|
|
|
|
pr_err("%s: error %d whilst initialising MMC card\n",
|
|
mmc_hostname(host), err);
|
|
|
|
return err;
|
|
}
|