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linux-next/drivers/memstick/host/jmb38x_ms.c
Linus Torvalds c3bed3b20e pci-v5.5-changes 
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Merge tag 'pci-v5.5-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

Pull PCI updates from Bjorn Helgaas:
 "Enumeration:

   - Warn if a host bridge has no NUMA info (Yunsheng Lin)

   - Add PCI_STD_NUM_BARS for the number of standard BARs (Denis
     Efremov)

  Resource management:

   - Fix boot-time Embedded Controller GPE storm caused by incorrect
     resource assignment after ACPI Bus Check Notification (Mika
     Westerberg)

   - Protect pci_reassign_bridge_resources() against concurrent
     addition/removal (Benjamin Herrenschmidt)

   - Fix bridge dma_ranges resource list cleanup (Rob Herring)

   - Add "pci=hpmmiosize" and "pci=hpmmioprefsize" parameters to control
     the MMIO and prefetchable MMIO window sizes of hotplug bridges
     independently (Nicholas Johnson)

   - Fix MMIO/MMIO_PREF window assignment that assigned more space than
     desired (Nicholas Johnson)

   - Only enforce bus numbers from bridge EA if the bridge has EA
     devices downstream (Subbaraya Sundeep)

   - Consolidate DT "dma-ranges" parsing and convert all host drivers to
     use shared parsing (Rob Herring)

  Error reporting:

   - Restore AER capability after resume (Mayurkumar Patel)

   - Add PoisonTLPBlocked AER counter (Rajat Jain)

   - Use for_each_set_bit() to simplify AER code (Andy Shevchenko)

   - Fix AER kernel-doc (Andy Shevchenko)

   - Add "pcie_ports=dpc-native" parameter to allow native use of DPC
     even if platform didn't grant control over AER (Olof Johansson)

  Hotplug:

   - Avoid returning prematurely from sysfs requests to enable or
     disable a PCIe hotplug slot (Lukas Wunner)

   - Don't disable interrupts twice when suspending hotplug ports (Mika
     Westerberg)

   - Fix deadlocks when PCIe ports are hot-removed while suspended (Mika
     Westerberg)

  Power management:

   - Remove unnecessary ASPM locking (Bjorn Helgaas)

   - Add support for disabling L1 PM Substates (Heiner Kallweit)

   - Allow re-enabling Clock PM after it has been disabled (Heiner
     Kallweit)

   - Add sysfs attributes for controlling ASPM link states (Heiner
     Kallweit)

   - Remove CONFIG_PCIEASPM_DEBUG, including "link_state" and "clk_ctl"
     sysfs files (Heiner Kallweit)

   - Avoid AMD FCH XHCI USB PME# from D0 defect that prevents wakeup on
     USB 2.0 or 1.1 connect events (Kai-Heng Feng)

   - Move power state check out of pci_msi_supported() (Bjorn Helgaas)

   - Fix incorrect MSI-X masking on resume and revert related nvme quirk
     for Kingston NVME SSD running FW E8FK11.T (Jian-Hong Pan)

   - Always return devices to D0 when thawing to fix hibernation with
     drivers like mlx4 that used legacy power management (previously we
     only did it for drivers with new power management ops) (Dexuan Cui)

   - Clear PCIe PME Status even for legacy power management (Bjorn
     Helgaas)

   - Fix PCI PM documentation errors (Bjorn Helgaas)

   - Use dev_printk() for more power management messages (Bjorn Helgaas)

   - Apply D2 delay as milliseconds, not microseconds (Bjorn Helgaas)

   - Convert xen-platform from legacy to generic power management (Bjorn
     Helgaas)

   - Removed unused .resume_early() and .suspend_late() legacy power
     management hooks (Bjorn Helgaas)

   - Rearrange power management code for clarity (Rafael J. Wysocki)

   - Decode power states more clearly ("4" or "D4" really refers to
     "D3cold") (Bjorn Helgaas)

   - Notice when reading PM Control register returns an error (~0)
     instead of interpreting it as being in D3hot (Bjorn Helgaas)

   - Add missing link delays required by the PCIe spec (Mika Westerberg)

  Virtualization:

   - Move pci_prg_resp_pasid_required() to CONFIG_PCI_PRI (Bjorn
     Helgaas)

   - Allow VFs to use PRI (the PF PRI is shared by the VFs, but the code
     previously didn't recognize that) (Kuppuswamy Sathyanarayanan)

   - Allow VFs to use PASID (the PF PASID capability is shared by the
     VFs, but the code previously didn't recognize that) (Kuppuswamy
     Sathyanarayanan)

   - Disconnect PF and VF ATS enablement, since ATS in PFs and
     associated VFs can be enabled independently (Kuppuswamy
     Sathyanarayanan)

   - Cache PRI and PASID capability offsets (Kuppuswamy Sathyanarayanan)

   - Cache the PRI PRG Response PASID Required bit (Bjorn Helgaas)

   - Consolidate ATS declarations in linux/pci-ats.h (Krzysztof
     Wilczynski)

   - Remove unused PRI and PASID stubs (Bjorn Helgaas)

   - Removed unnecessary EXPORT_SYMBOL_GPL() from ATS, PRI, and PASID
     interfaces that are only used by built-in IOMMU drivers (Bjorn
     Helgaas)

   - Hide PRI and PASID state restoration functions used only inside the
     PCI core (Bjorn Helgaas)

   - Add a DMA alias quirk for the Intel VCA NTB (Slawomir Pawlowski)

   - Serialize sysfs sriov_numvfs reads vs writes (Pierre Crégut)

   - Update Cavium ACS quirk for ThunderX2 and ThunderX3 (George
     Cherian)

   - Fix the UPDCR register address in the Intel ACS quirk (Steffen
     Liebergeld)

   - Unify ACS quirk implementations (Bjorn Helgaas)

  Amlogic Meson host bridge driver:

   - Fix meson PERST# GPIO polarity problem (Remi Pommarel)

   - Add DT bindings for Amlogic Meson G12A (Neil Armstrong)

   - Fix meson clock names to match DT bindings (Neil Armstrong)

   - Add meson support for Amlogic G12A SoC with separate shared PHY
     (Neil Armstrong)

   - Add meson extended PCIe PHY functions for Amlogic G12A USB3+PCIe
     combo PHY (Neil Armstrong)

   - Add arm64 DT for Amlogic G12A PCIe controller node (Neil Armstrong)

   - Add commented-out description of VIM3 USB3/PCIe mux in arm64 DT
     (Neil Armstrong)

  Broadcom iProc host bridge driver:

   - Invalidate iProc PAXB address mapping before programming it
     (Abhishek Shah)

   - Fix iproc-msi and mvebu __iomem annotations (Ben Dooks)

  Cadence host bridge driver:

   - Refactor Cadence PCIe host controller to use as a library for both
     host and endpoint (Tom Joseph)

  Freescale Layerscape host bridge driver:

   - Add layerscape LS1028a support (Xiaowei Bao)

  Intel VMD host bridge driver:

   - Add VMD bus 224-255 restriction decode (Jon Derrick)

   - Add VMD 8086:9A0B device ID (Jon Derrick)

   - Remove Keith from VMD maintainer list (Keith Busch)

  Marvell ARMADA 3700 / Aardvark host bridge driver:

   - Use LTSSM state to build link training flag since Aardvark doesn't
     implement the Link Training bit (Remi Pommarel)

   - Delay before training Aardvark link in case PERST# was asserted
     before the driver probe (Remi Pommarel)

   - Fix Aardvark issues with Root Control reads and writes (Remi
     Pommarel)

   - Don't rely on jiffies in Aardvark config access path since
     interrupts may be disabled (Remi Pommarel)

   - Fix Aardvark big-endian support (Grzegorz Jaszczyk)

  Marvell ARMADA 370 / XP host bridge driver:

   - Make mvebu_pci_bridge_emul_ops static (Ben Dooks)

  Microsoft Hyper-V host bridge driver:

   - Add hibernation support for Hyper-V virtual PCI devices (Dexuan
     Cui)

   - Track Hyper-V pci_protocol_version per-hbus, not globally (Dexuan
     Cui)

   - Avoid kmemleak false positive on hv hbus buffer (Dexuan Cui)

  Mobiveil host bridge driver:

   - Change mobiveil csr_read()/write() function names that conflict
     with riscv arch functions (Kefeng Wang)

  NVIDIA Tegra host bridge driver:

   - Fix Tegra CLKREQ dependency programming (Vidya Sagar)

  Renesas R-Car host bridge driver:

   - Remove unnecessary header include from rcar (Andrew Murray)

   - Tighten register index checking for rcar inbound range programming
     (Marek Vasut)

   - Fix rcar inbound range alignment calculation to improve packing of
     multiple entries (Marek Vasut)

   - Update rcar MACCTLR setting to match documentation (Yoshihiro
     Shimoda)

   - Clear bit 0 of MACCTLR before PCIETCTLR.CFINIT per manual
     (Yoshihiro Shimoda)

   - Add Marek Vasut and Yoshihiro Shimoda as R-Car maintainers (Simon
     Horman)

  Rockchip host bridge driver:

   - Make rockchip 0V9 and 1V8 power regulators non-optional (Robin
     Murphy)

  Socionext UniPhier host bridge driver:

   - Set uniphier to host (RC) mode always (Kunihiko Hayashi)

  Endpoint drivers:

   - Fix endpoint driver sign extension problem when shifting page
     number to phys_addr_t (Alan Mikhak)

  Misc:

   - Add NumaChip SPDX header (Krzysztof Wilczynski)

   - Replace EXTRA_CFLAGS with ccflags-y (Krzysztof Wilczynski)

   - Remove unused includes (Krzysztof Wilczynski)

   - Removed unused sysfs attribute groups (Ben Dooks)

   - Remove PTM and ASPM dependencies on PCIEPORTBUS (Bjorn Helgaas)

   - Add PCIe Link Control 2 register field definitions to replace magic
     numbers in AMDGPU and Radeon CIK/SI (Bjorn Helgaas)

   - Fix incorrect Link Control 2 Transmit Margin usage in AMDGPU and
     Radeon CIK/SI PCIe Gen3 link training (Bjorn Helgaas)

   - Use pcie_capability_read_word() instead of pci_read_config_word()
     in AMDGPU and Radeon CIK/SI (Frederick Lawler)

   - Remove unused pci_irq_get_node() Greg Kroah-Hartman)

   - Make asm/msi.h mandatory and simplify PCI_MSI_IRQ_DOMAIN Kconfig
     (Palmer Dabbelt, Michal Simek)

   - Read all 64 bits of Switchtec part_event_bitmap (Logan Gunthorpe)

   - Fix erroneous intel-iommu dependency on CONFIG_AMD_IOMMU (Bjorn
     Helgaas)

   - Fix bridge emulation big-endian support (Grzegorz Jaszczyk)

   - Fix dwc find_next_bit() usage (Niklas Cassel)

   - Fix pcitest.c fd leak (Hewenliang)

   - Fix typos and comments (Bjorn Helgaas)

   - Fix Kconfig whitespace errors (Krzysztof Kozlowski)"

* tag 'pci-v5.5-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (160 commits)
  PCI: Remove PCI_MSI_IRQ_DOMAIN architecture whitelist
  asm-generic: Make msi.h a mandatory include/asm header
  Revert "nvme: Add quirk for Kingston NVME SSD running FW E8FK11.T"
  PCI/MSI: Fix incorrect MSI-X masking on resume
  PCI/MSI: Move power state check out of pci_msi_supported()
  PCI/MSI: Remove unused pci_irq_get_node()
  PCI: hv: Avoid a kmemleak false positive caused by the hbus buffer
  PCI: hv: Change pci_protocol_version to per-hbus
  PCI: hv: Add hibernation support
  PCI: hv: Reorganize the code in preparation of hibernation
  MAINTAINERS: Remove Keith from VMD maintainer
  PCI/ASPM: Remove PCIEASPM_DEBUG Kconfig option and related code
  PCI/ASPM: Add sysfs attributes for controlling ASPM link states
  PCI: Fix indentation
  drm/radeon: Prefer pcie_capability_read_word()
  drm/radeon: Replace numbers with PCI_EXP_LNKCTL2 definitions
  drm/radeon: Correct Transmit Margin masks
  drm/amdgpu: Prefer pcie_capability_read_word()
  PCI: uniphier: Set mode register to host mode
  drm/amdgpu: Replace numbers with PCI_EXP_LNKCTL2 definitions
  ...
2019-12-03 13:58:22 -08:00

1048 lines
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// SPDX-License-Identifier: GPL-2.0-only
/*
* jmb38x_ms.c - JMicron jmb38x MemoryStick card reader
*
* Copyright (C) 2008 Alex Dubov <oakad@yahoo.com>
*/
#include <linux/spinlock.h>
#include <linux/interrupt.h>
#include <linux/pci.h>
#include <linux/dma-mapping.h>
#include <linux/delay.h>
#include <linux/highmem.h>
#include <linux/memstick.h>
#include <linux/slab.h>
#include <linux/module.h>
#define DRIVER_NAME "jmb38x_ms"
static bool no_dma;
module_param(no_dma, bool, 0644);
enum {
DMA_ADDRESS = 0x00,
BLOCK = 0x04,
DMA_CONTROL = 0x08,
TPC_P0 = 0x0c,
TPC_P1 = 0x10,
TPC = 0x14,
HOST_CONTROL = 0x18,
DATA = 0x1c,
STATUS = 0x20,
INT_STATUS = 0x24,
INT_STATUS_ENABLE = 0x28,
INT_SIGNAL_ENABLE = 0x2c,
TIMER = 0x30,
TIMER_CONTROL = 0x34,
PAD_OUTPUT_ENABLE = 0x38,
PAD_PU_PD = 0x3c,
CLOCK_DELAY = 0x40,
ADMA_ADDRESS = 0x44,
CLOCK_CONTROL = 0x48,
LED_CONTROL = 0x4c,
VERSION = 0x50
};
struct jmb38x_ms_host {
struct jmb38x_ms *chip;
void __iomem *addr;
spinlock_t lock;
struct tasklet_struct notify;
int id;
char host_id[32];
int irq;
unsigned int block_pos;
unsigned long timeout_jiffies;
struct timer_list timer;
struct memstick_host *msh;
struct memstick_request *req;
unsigned char cmd_flags;
unsigned char io_pos;
unsigned char ifmode;
unsigned int io_word[2];
};
struct jmb38x_ms {
struct pci_dev *pdev;
int host_cnt;
struct memstick_host *hosts[];
};
#define BLOCK_COUNT_MASK 0xffff0000
#define BLOCK_SIZE_MASK 0x00000fff
#define DMA_CONTROL_ENABLE 0x00000001
#define TPC_DATA_SEL 0x00008000
#define TPC_DIR 0x00004000
#define TPC_WAIT_INT 0x00002000
#define TPC_GET_INT 0x00000800
#define TPC_CODE_SZ_MASK 0x00000700
#define TPC_DATA_SZ_MASK 0x00000007
#define HOST_CONTROL_TDELAY_EN 0x00040000
#define HOST_CONTROL_HW_OC_P 0x00010000
#define HOST_CONTROL_RESET_REQ 0x00008000
#define HOST_CONTROL_REI 0x00004000
#define HOST_CONTROL_LED 0x00000400
#define HOST_CONTROL_FAST_CLK 0x00000200
#define HOST_CONTROL_RESET 0x00000100
#define HOST_CONTROL_POWER_EN 0x00000080
#define HOST_CONTROL_CLOCK_EN 0x00000040
#define HOST_CONTROL_REO 0x00000008
#define HOST_CONTROL_IF_SHIFT 4
#define HOST_CONTROL_IF_SERIAL 0x0
#define HOST_CONTROL_IF_PAR4 0x1
#define HOST_CONTROL_IF_PAR8 0x3
#define STATUS_BUSY 0x00080000
#define STATUS_MS_DAT7 0x00040000
#define STATUS_MS_DAT6 0x00020000
#define STATUS_MS_DAT5 0x00010000
#define STATUS_MS_DAT4 0x00008000
#define STATUS_MS_DAT3 0x00004000
#define STATUS_MS_DAT2 0x00002000
#define STATUS_MS_DAT1 0x00001000
#define STATUS_MS_DAT0 0x00000800
#define STATUS_HAS_MEDIA 0x00000400
#define STATUS_FIFO_EMPTY 0x00000200
#define STATUS_FIFO_FULL 0x00000100
#define STATUS_MS_CED 0x00000080
#define STATUS_MS_ERR 0x00000040
#define STATUS_MS_BRQ 0x00000020
#define STATUS_MS_CNK 0x00000001
#define INT_STATUS_TPC_ERR 0x00080000
#define INT_STATUS_CRC_ERR 0x00040000
#define INT_STATUS_TIMER_TO 0x00020000
#define INT_STATUS_HSK_TO 0x00010000
#define INT_STATUS_ANY_ERR 0x00008000
#define INT_STATUS_FIFO_WRDY 0x00000080
#define INT_STATUS_FIFO_RRDY 0x00000040
#define INT_STATUS_MEDIA_OUT 0x00000010
#define INT_STATUS_MEDIA_IN 0x00000008
#define INT_STATUS_DMA_BOUNDARY 0x00000004
#define INT_STATUS_EOTRAN 0x00000002
#define INT_STATUS_EOTPC 0x00000001
#define INT_STATUS_ALL 0x000f801f
#define PAD_OUTPUT_ENABLE_MS 0x0F3F
#define PAD_PU_PD_OFF 0x7FFF0000
#define PAD_PU_PD_ON_MS_SOCK0 0x5f8f0000
#define PAD_PU_PD_ON_MS_SOCK1 0x0f0f0000
#define CLOCK_CONTROL_BY_MMIO 0x00000008
#define CLOCK_CONTROL_40MHZ 0x00000001
#define CLOCK_CONTROL_50MHZ 0x00000002
#define CLOCK_CONTROL_60MHZ 0x00000010
#define CLOCK_CONTROL_62_5MHZ 0x00000004
#define CLOCK_CONTROL_OFF 0x00000000
#define PCI_CTL_CLOCK_DLY_ADDR 0x000000b0
enum {
CMD_READY = 0x01,
FIFO_READY = 0x02,
REG_DATA = 0x04,
DMA_DATA = 0x08
};
static unsigned int jmb38x_ms_read_data(struct jmb38x_ms_host *host,
unsigned char *buf, unsigned int length)
{
unsigned int off = 0;
while (host->io_pos && length) {
buf[off++] = host->io_word[0] & 0xff;
host->io_word[0] >>= 8;
length--;
host->io_pos--;
}
if (!length)
return off;
while (!(STATUS_FIFO_EMPTY & readl(host->addr + STATUS))) {
if (length < 4)
break;
*(unsigned int *)(buf + off) = __raw_readl(host->addr + DATA);
length -= 4;
off += 4;
}
if (length
&& !(STATUS_FIFO_EMPTY & readl(host->addr + STATUS))) {
host->io_word[0] = readl(host->addr + DATA);
for (host->io_pos = 4; host->io_pos; --host->io_pos) {
buf[off++] = host->io_word[0] & 0xff;
host->io_word[0] >>= 8;
length--;
if (!length)
break;
}
}
return off;
}
static unsigned int jmb38x_ms_read_reg_data(struct jmb38x_ms_host *host,
unsigned char *buf,
unsigned int length)
{
unsigned int off = 0;
while (host->io_pos > 4 && length) {
buf[off++] = host->io_word[0] & 0xff;
host->io_word[0] >>= 8;
length--;
host->io_pos--;
}
if (!length)
return off;
while (host->io_pos && length) {
buf[off++] = host->io_word[1] & 0xff;
host->io_word[1] >>= 8;
length--;
host->io_pos--;
}
return off;
}
static unsigned int jmb38x_ms_write_data(struct jmb38x_ms_host *host,
unsigned char *buf,
unsigned int length)
{
unsigned int off = 0;
if (host->io_pos) {
while (host->io_pos < 4 && length) {
host->io_word[0] |= buf[off++] << (host->io_pos * 8);
host->io_pos++;
length--;
}
}
if (host->io_pos == 4
&& !(STATUS_FIFO_FULL & readl(host->addr + STATUS))) {
writel(host->io_word[0], host->addr + DATA);
host->io_pos = 0;
host->io_word[0] = 0;
} else if (host->io_pos) {
return off;
}
if (!length)
return off;
while (!(STATUS_FIFO_FULL & readl(host->addr + STATUS))) {
if (length < 4)
break;
__raw_writel(*(unsigned int *)(buf + off),
host->addr + DATA);
length -= 4;
off += 4;
}
switch (length) {
case 3:
host->io_word[0] |= buf[off + 2] << 16;
host->io_pos++;
/* fall through */
case 2:
host->io_word[0] |= buf[off + 1] << 8;
host->io_pos++;
/* fall through */
case 1:
host->io_word[0] |= buf[off];
host->io_pos++;
}
off += host->io_pos;
return off;
}
static unsigned int jmb38x_ms_write_reg_data(struct jmb38x_ms_host *host,
unsigned char *buf,
unsigned int length)
{
unsigned int off = 0;
while (host->io_pos < 4 && length) {
host->io_word[0] &= ~(0xff << (host->io_pos * 8));
host->io_word[0] |= buf[off++] << (host->io_pos * 8);
host->io_pos++;
length--;
}
if (!length)
return off;
while (host->io_pos < 8 && length) {
host->io_word[1] &= ~(0xff << (host->io_pos * 8));
host->io_word[1] |= buf[off++] << (host->io_pos * 8);
host->io_pos++;
length--;
}
return off;
}
static int jmb38x_ms_transfer_data(struct jmb38x_ms_host *host)
{
unsigned int length;
unsigned int off;
unsigned int t_size, p_cnt;
unsigned char *buf;
struct page *pg;
unsigned long flags = 0;
if (host->req->long_data) {
length = host->req->sg.length - host->block_pos;
off = host->req->sg.offset + host->block_pos;
} else {
length = host->req->data_len - host->block_pos;
off = 0;
}
while (length) {
unsigned int uninitialized_var(p_off);
if (host->req->long_data) {
pg = nth_page(sg_page(&host->req->sg),
off >> PAGE_SHIFT);
p_off = offset_in_page(off);
p_cnt = PAGE_SIZE - p_off;
p_cnt = min(p_cnt, length);
local_irq_save(flags);
buf = kmap_atomic(pg) + p_off;
} else {
buf = host->req->data + host->block_pos;
p_cnt = host->req->data_len - host->block_pos;
}
if (host->req->data_dir == WRITE)
t_size = !(host->cmd_flags & REG_DATA)
? jmb38x_ms_write_data(host, buf, p_cnt)
: jmb38x_ms_write_reg_data(host, buf, p_cnt);
else
t_size = !(host->cmd_flags & REG_DATA)
? jmb38x_ms_read_data(host, buf, p_cnt)
: jmb38x_ms_read_reg_data(host, buf, p_cnt);
if (host->req->long_data) {
kunmap_atomic(buf - p_off);
local_irq_restore(flags);
}
if (!t_size)
break;
host->block_pos += t_size;
length -= t_size;
off += t_size;
}
if (!length && host->req->data_dir == WRITE) {
if (host->cmd_flags & REG_DATA) {
writel(host->io_word[0], host->addr + TPC_P0);
writel(host->io_word[1], host->addr + TPC_P1);
} else if (host->io_pos) {
writel(host->io_word[0], host->addr + DATA);
}
}
return length;
}
static int jmb38x_ms_issue_cmd(struct memstick_host *msh)
{
struct jmb38x_ms_host *host = memstick_priv(msh);
unsigned int data_len, cmd, t_val;
if (!(STATUS_HAS_MEDIA & readl(host->addr + STATUS))) {
dev_dbg(&msh->dev, "no media status\n");
host->req->error = -ETIME;
return host->req->error;
}
dev_dbg(&msh->dev, "control %08x\n", readl(host->addr + HOST_CONTROL));
dev_dbg(&msh->dev, "status %08x\n", readl(host->addr + INT_STATUS));
dev_dbg(&msh->dev, "hstatus %08x\n", readl(host->addr + STATUS));
host->cmd_flags = 0;
host->block_pos = 0;
host->io_pos = 0;
host->io_word[0] = 0;
host->io_word[1] = 0;
cmd = host->req->tpc << 16;
cmd |= TPC_DATA_SEL;
if (host->req->data_dir == READ)
cmd |= TPC_DIR;
if (host->req->need_card_int) {
if (host->ifmode == MEMSTICK_SERIAL)
cmd |= TPC_GET_INT;
else
cmd |= TPC_WAIT_INT;
}
if (!no_dma)
host->cmd_flags |= DMA_DATA;
if (host->req->long_data) {
data_len = host->req->sg.length;
} else {
data_len = host->req->data_len;
host->cmd_flags &= ~DMA_DATA;
}
if (data_len <= 8) {
cmd &= ~(TPC_DATA_SEL | 0xf);
host->cmd_flags |= REG_DATA;
cmd |= data_len & 0xf;
host->cmd_flags &= ~DMA_DATA;
}
if (host->cmd_flags & DMA_DATA) {
if (1 != dma_map_sg(&host->chip->pdev->dev, &host->req->sg, 1,
host->req->data_dir == READ
? DMA_FROM_DEVICE
: DMA_TO_DEVICE)) {
host->req->error = -ENOMEM;
return host->req->error;
}
data_len = sg_dma_len(&host->req->sg);
writel(sg_dma_address(&host->req->sg),
host->addr + DMA_ADDRESS);
writel(((1 << 16) & BLOCK_COUNT_MASK)
| (data_len & BLOCK_SIZE_MASK),
host->addr + BLOCK);
writel(DMA_CONTROL_ENABLE, host->addr + DMA_CONTROL);
} else if (!(host->cmd_flags & REG_DATA)) {
writel(((1 << 16) & BLOCK_COUNT_MASK)
| (data_len & BLOCK_SIZE_MASK),
host->addr + BLOCK);
t_val = readl(host->addr + INT_STATUS_ENABLE);
t_val |= host->req->data_dir == READ
? INT_STATUS_FIFO_RRDY
: INT_STATUS_FIFO_WRDY;
writel(t_val, host->addr + INT_STATUS_ENABLE);
writel(t_val, host->addr + INT_SIGNAL_ENABLE);
} else {
cmd &= ~(TPC_DATA_SEL | 0xf);
host->cmd_flags |= REG_DATA;
cmd |= data_len & 0xf;
if (host->req->data_dir == WRITE) {
jmb38x_ms_transfer_data(host);
writel(host->io_word[0], host->addr + TPC_P0);
writel(host->io_word[1], host->addr + TPC_P1);
}
}
mod_timer(&host->timer, jiffies + host->timeout_jiffies);
writel(HOST_CONTROL_LED | readl(host->addr + HOST_CONTROL),
host->addr + HOST_CONTROL);
host->req->error = 0;
writel(cmd, host->addr + TPC);
dev_dbg(&msh->dev, "executing TPC %08x, len %x\n", cmd, data_len);
return 0;
}
static void jmb38x_ms_complete_cmd(struct memstick_host *msh, int last)
{
struct jmb38x_ms_host *host = memstick_priv(msh);
unsigned int t_val = 0;
int rc;
del_timer(&host->timer);
dev_dbg(&msh->dev, "c control %08x\n",
readl(host->addr + HOST_CONTROL));
dev_dbg(&msh->dev, "c status %08x\n",
readl(host->addr + INT_STATUS));
dev_dbg(&msh->dev, "c hstatus %08x\n", readl(host->addr + STATUS));
host->req->int_reg = readl(host->addr + STATUS) & 0xff;
writel(0, host->addr + BLOCK);
writel(0, host->addr + DMA_CONTROL);
if (host->cmd_flags & DMA_DATA) {
dma_unmap_sg(&host->chip->pdev->dev, &host->req->sg, 1,
host->req->data_dir == READ
? DMA_FROM_DEVICE : DMA_TO_DEVICE);
} else {
t_val = readl(host->addr + INT_STATUS_ENABLE);
if (host->req->data_dir == READ)
t_val &= ~INT_STATUS_FIFO_RRDY;
else
t_val &= ~INT_STATUS_FIFO_WRDY;
writel(t_val, host->addr + INT_STATUS_ENABLE);
writel(t_val, host->addr + INT_SIGNAL_ENABLE);
}
writel((~HOST_CONTROL_LED) & readl(host->addr + HOST_CONTROL),
host->addr + HOST_CONTROL);
if (!last) {
do {
rc = memstick_next_req(msh, &host->req);
} while (!rc && jmb38x_ms_issue_cmd(msh));
} else {
do {
rc = memstick_next_req(msh, &host->req);
if (!rc)
host->req->error = -ETIME;
} while (!rc);
}
}
static irqreturn_t jmb38x_ms_isr(int irq, void *dev_id)
{
struct memstick_host *msh = dev_id;
struct jmb38x_ms_host *host = memstick_priv(msh);
unsigned int irq_status;
spin_lock(&host->lock);
irq_status = readl(host->addr + INT_STATUS);
dev_dbg(&host->chip->pdev->dev, "irq_status = %08x\n", irq_status);
if (irq_status == 0 || irq_status == (~0)) {
spin_unlock(&host->lock);
return IRQ_NONE;
}
if (host->req) {
if (irq_status & INT_STATUS_ANY_ERR) {
if (irq_status & INT_STATUS_CRC_ERR)
host->req->error = -EILSEQ;
else if (irq_status & INT_STATUS_TPC_ERR) {
dev_dbg(&host->chip->pdev->dev, "TPC_ERR\n");
jmb38x_ms_complete_cmd(msh, 0);
} else
host->req->error = -ETIME;
} else {
if (host->cmd_flags & DMA_DATA) {
if (irq_status & INT_STATUS_EOTRAN)
host->cmd_flags |= FIFO_READY;
} else {
if (irq_status & (INT_STATUS_FIFO_RRDY
| INT_STATUS_FIFO_WRDY))
jmb38x_ms_transfer_data(host);
if (irq_status & INT_STATUS_EOTRAN) {
jmb38x_ms_transfer_data(host);
host->cmd_flags |= FIFO_READY;
}
}
if (irq_status & INT_STATUS_EOTPC) {
host->cmd_flags |= CMD_READY;
if (host->cmd_flags & REG_DATA) {
if (host->req->data_dir == READ) {
host->io_word[0]
= readl(host->addr
+ TPC_P0);
host->io_word[1]
= readl(host->addr
+ TPC_P1);
host->io_pos = 8;
jmb38x_ms_transfer_data(host);
}
host->cmd_flags |= FIFO_READY;
}
}
}
}
if (irq_status & (INT_STATUS_MEDIA_IN | INT_STATUS_MEDIA_OUT)) {
dev_dbg(&host->chip->pdev->dev, "media changed\n");
memstick_detect_change(msh);
}
writel(irq_status, host->addr + INT_STATUS);
if (host->req
&& (((host->cmd_flags & CMD_READY)
&& (host->cmd_flags & FIFO_READY))
|| host->req->error))
jmb38x_ms_complete_cmd(msh, 0);
spin_unlock(&host->lock);
return IRQ_HANDLED;
}
static void jmb38x_ms_abort(struct timer_list *t)
{
struct jmb38x_ms_host *host = from_timer(host, t, timer);
struct memstick_host *msh = host->msh;
unsigned long flags;
dev_dbg(&host->chip->pdev->dev, "abort\n");
spin_lock_irqsave(&host->lock, flags);
if (host->req) {
host->req->error = -ETIME;
jmb38x_ms_complete_cmd(msh, 0);
}
spin_unlock_irqrestore(&host->lock, flags);
}
static void jmb38x_ms_req_tasklet(unsigned long data)
{
struct memstick_host *msh = (struct memstick_host *)data;
struct jmb38x_ms_host *host = memstick_priv(msh);
unsigned long flags;
int rc;
spin_lock_irqsave(&host->lock, flags);
if (!host->req) {
do {
rc = memstick_next_req(msh, &host->req);
dev_dbg(&host->chip->pdev->dev, "tasklet req %d\n", rc);
} while (!rc && jmb38x_ms_issue_cmd(msh));
}
spin_unlock_irqrestore(&host->lock, flags);
}
static void jmb38x_ms_dummy_submit(struct memstick_host *msh)
{
return;
}
static void jmb38x_ms_submit_req(struct memstick_host *msh)
{
struct jmb38x_ms_host *host = memstick_priv(msh);
tasklet_schedule(&host->notify);
}
static int jmb38x_ms_reset(struct jmb38x_ms_host *host)
{
int cnt;
writel(HOST_CONTROL_RESET_REQ | HOST_CONTROL_CLOCK_EN
| readl(host->addr + HOST_CONTROL),
host->addr + HOST_CONTROL);
for (cnt = 0; cnt < 20; ++cnt) {
if (!(HOST_CONTROL_RESET_REQ
& readl(host->addr + HOST_CONTROL)))
goto reset_next;
ndelay(20);
}
dev_dbg(&host->chip->pdev->dev, "reset_req timeout\n");
reset_next:
writel(HOST_CONTROL_RESET | HOST_CONTROL_CLOCK_EN
| readl(host->addr + HOST_CONTROL),
host->addr + HOST_CONTROL);
for (cnt = 0; cnt < 20; ++cnt) {
if (!(HOST_CONTROL_RESET
& readl(host->addr + HOST_CONTROL)))
goto reset_ok;
ndelay(20);
}
dev_dbg(&host->chip->pdev->dev, "reset timeout\n");
return -EIO;
reset_ok:
writel(INT_STATUS_ALL, host->addr + INT_SIGNAL_ENABLE);
writel(INT_STATUS_ALL, host->addr + INT_STATUS_ENABLE);
return 0;
}
static int jmb38x_ms_set_param(struct memstick_host *msh,
enum memstick_param param,
int value)
{
struct jmb38x_ms_host *host = memstick_priv(msh);
unsigned int host_ctl = readl(host->addr + HOST_CONTROL);
unsigned int clock_ctl = CLOCK_CONTROL_BY_MMIO, clock_delay = 0;
int rc = 0;
switch (param) {
case MEMSTICK_POWER:
if (value == MEMSTICK_POWER_ON) {
rc = jmb38x_ms_reset(host);
if (rc)
return rc;
host_ctl = 7;
host_ctl |= HOST_CONTROL_POWER_EN
| HOST_CONTROL_CLOCK_EN;
writel(host_ctl, host->addr + HOST_CONTROL);
writel(host->id ? PAD_PU_PD_ON_MS_SOCK1
: PAD_PU_PD_ON_MS_SOCK0,
host->addr + PAD_PU_PD);
writel(PAD_OUTPUT_ENABLE_MS,
host->addr + PAD_OUTPUT_ENABLE);
msleep(10);
dev_dbg(&host->chip->pdev->dev, "power on\n");
} else if (value == MEMSTICK_POWER_OFF) {
host_ctl &= ~(HOST_CONTROL_POWER_EN
| HOST_CONTROL_CLOCK_EN);
writel(host_ctl, host->addr + HOST_CONTROL);
writel(0, host->addr + PAD_OUTPUT_ENABLE);
writel(PAD_PU_PD_OFF, host->addr + PAD_PU_PD);
dev_dbg(&host->chip->pdev->dev, "power off\n");
} else
return -EINVAL;
break;
case MEMSTICK_INTERFACE:
dev_dbg(&host->chip->pdev->dev,
"Set Host Interface Mode to %d\n", value);
host_ctl &= ~(HOST_CONTROL_FAST_CLK | HOST_CONTROL_REI |
HOST_CONTROL_REO);
host_ctl |= HOST_CONTROL_TDELAY_EN | HOST_CONTROL_HW_OC_P;
host_ctl &= ~(3 << HOST_CONTROL_IF_SHIFT);
if (value == MEMSTICK_SERIAL) {
host_ctl |= HOST_CONTROL_IF_SERIAL
<< HOST_CONTROL_IF_SHIFT;
host_ctl |= HOST_CONTROL_REI;
clock_ctl |= CLOCK_CONTROL_40MHZ;
clock_delay = 0;
} else if (value == MEMSTICK_PAR4) {
host_ctl |= HOST_CONTROL_FAST_CLK;
host_ctl |= HOST_CONTROL_IF_PAR4
<< HOST_CONTROL_IF_SHIFT;
host_ctl |= HOST_CONTROL_REO;
clock_ctl |= CLOCK_CONTROL_40MHZ;
clock_delay = 4;
} else if (value == MEMSTICK_PAR8) {
host_ctl |= HOST_CONTROL_FAST_CLK;
host_ctl |= HOST_CONTROL_IF_PAR8
<< HOST_CONTROL_IF_SHIFT;
clock_ctl |= CLOCK_CONTROL_50MHZ;
clock_delay = 0;
} else
return -EINVAL;
writel(host_ctl, host->addr + HOST_CONTROL);
writel(CLOCK_CONTROL_OFF, host->addr + CLOCK_CONTROL);
writel(clock_ctl, host->addr + CLOCK_CONTROL);
pci_write_config_byte(host->chip->pdev,
PCI_CTL_CLOCK_DLY_ADDR + 1,
clock_delay);
host->ifmode = value;
break;
};
return 0;
}
#define PCI_PMOS0_CONTROL 0xae
#define PMOS0_ENABLE 0x01
#define PMOS0_OVERCURRENT_LEVEL_2_4V 0x06
#define PMOS0_EN_OVERCURRENT_DEBOUNCE 0x40
#define PMOS0_SW_LED_POLARITY_ENABLE 0x80
#define PMOS0_ACTIVE_BITS (PMOS0_ENABLE | PMOS0_EN_OVERCURRENT_DEBOUNCE | \
PMOS0_OVERCURRENT_LEVEL_2_4V)
#define PCI_PMOS1_CONTROL 0xbd
#define PMOS1_ACTIVE_BITS 0x4a
#define PCI_CLOCK_CTL 0xb9
static int jmb38x_ms_pmos(struct pci_dev *pdev, int flag)
{
unsigned char val;
pci_read_config_byte(pdev, PCI_PMOS0_CONTROL, &val);
if (flag)
val |= PMOS0_ACTIVE_BITS;
else
val &= ~PMOS0_ACTIVE_BITS;
pci_write_config_byte(pdev, PCI_PMOS0_CONTROL, val);
dev_dbg(&pdev->dev, "JMB38x: set PMOS0 val 0x%x\n", val);
if (pci_resource_flags(pdev, 1)) {
pci_read_config_byte(pdev, PCI_PMOS1_CONTROL, &val);
if (flag)
val |= PMOS1_ACTIVE_BITS;
else
val &= ~PMOS1_ACTIVE_BITS;
pci_write_config_byte(pdev, PCI_PMOS1_CONTROL, val);
dev_dbg(&pdev->dev, "JMB38x: set PMOS1 val 0x%x\n", val);
}
pci_read_config_byte(pdev, PCI_CLOCK_CTL, &val);
pci_write_config_byte(pdev, PCI_CLOCK_CTL, val & ~0x0f);
pci_write_config_byte(pdev, PCI_CLOCK_CTL, val | 0x01);
dev_dbg(&pdev->dev, "Clock Control by PCI config is disabled!\n");
return 0;
}
#ifdef CONFIG_PM
static int jmb38x_ms_suspend(struct pci_dev *dev, pm_message_t state)
{
struct jmb38x_ms *jm = pci_get_drvdata(dev);
int cnt;
for (cnt = 0; cnt < jm->host_cnt; ++cnt) {
if (!jm->hosts[cnt])
break;
memstick_suspend_host(jm->hosts[cnt]);
}
pci_save_state(dev);
pci_enable_wake(dev, pci_choose_state(dev, state), 0);
pci_disable_device(dev);
pci_set_power_state(dev, pci_choose_state(dev, state));
return 0;
}
static int jmb38x_ms_resume(struct pci_dev *dev)
{
struct jmb38x_ms *jm = pci_get_drvdata(dev);
int rc;
pci_set_power_state(dev, PCI_D0);
pci_restore_state(dev);
rc = pci_enable_device(dev);
if (rc)
return rc;
pci_set_master(dev);
jmb38x_ms_pmos(dev, 1);
for (rc = 0; rc < jm->host_cnt; ++rc) {
if (!jm->hosts[rc])
break;
memstick_resume_host(jm->hosts[rc]);
memstick_detect_change(jm->hosts[rc]);
}
return 0;
}
#else
#define jmb38x_ms_suspend NULL
#define jmb38x_ms_resume NULL
#endif /* CONFIG_PM */
static int jmb38x_ms_count_slots(struct pci_dev *pdev)
{
int cnt, rc = 0;
for (cnt = 0; cnt < PCI_STD_NUM_BARS; ++cnt) {
if (!(IORESOURCE_MEM & pci_resource_flags(pdev, cnt)))
break;
if (256 != pci_resource_len(pdev, cnt))
break;
++rc;
}
return rc;
}
static struct memstick_host *jmb38x_ms_alloc_host(struct jmb38x_ms *jm, int cnt)
{
struct memstick_host *msh;
struct jmb38x_ms_host *host;
msh = memstick_alloc_host(sizeof(struct jmb38x_ms_host),
&jm->pdev->dev);
if (!msh)
return NULL;
host = memstick_priv(msh);
host->msh = msh;
host->chip = jm;
host->addr = ioremap(pci_resource_start(jm->pdev, cnt),
pci_resource_len(jm->pdev, cnt));
if (!host->addr)
goto err_out_free;
spin_lock_init(&host->lock);
host->id = cnt;
snprintf(host->host_id, sizeof(host->host_id), DRIVER_NAME ":slot%d",
host->id);
host->irq = jm->pdev->irq;
host->timeout_jiffies = msecs_to_jiffies(1000);
tasklet_init(&host->notify, jmb38x_ms_req_tasklet, (unsigned long)msh);
msh->request = jmb38x_ms_submit_req;
msh->set_param = jmb38x_ms_set_param;
msh->caps = MEMSTICK_CAP_PAR4 | MEMSTICK_CAP_PAR8;
timer_setup(&host->timer, jmb38x_ms_abort, 0);
if (!request_irq(host->irq, jmb38x_ms_isr, IRQF_SHARED, host->host_id,
msh))
return msh;
iounmap(host->addr);
err_out_free:
kfree(msh);
return NULL;
}
static void jmb38x_ms_free_host(struct memstick_host *msh)
{
struct jmb38x_ms_host *host = memstick_priv(msh);
free_irq(host->irq, msh);
iounmap(host->addr);
memstick_free_host(msh);
}
static int jmb38x_ms_probe(struct pci_dev *pdev,
const struct pci_device_id *dev_id)
{
struct jmb38x_ms *jm;
int pci_dev_busy = 0;
int rc, cnt;
rc = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
if (rc)
return rc;
rc = pci_enable_device(pdev);
if (rc)
return rc;
pci_set_master(pdev);
rc = pci_request_regions(pdev, DRIVER_NAME);
if (rc) {
pci_dev_busy = 1;
goto err_out;
}
jmb38x_ms_pmos(pdev, 1);
cnt = jmb38x_ms_count_slots(pdev);
if (!cnt) {
rc = -ENODEV;
pci_dev_busy = 1;
goto err_out_int;
}
jm = kzalloc(sizeof(struct jmb38x_ms)
+ cnt * sizeof(struct memstick_host *), GFP_KERNEL);
if (!jm) {
rc = -ENOMEM;
goto err_out_int;
}
jm->pdev = pdev;
jm->host_cnt = cnt;
pci_set_drvdata(pdev, jm);
for (cnt = 0; cnt < jm->host_cnt; ++cnt) {
jm->hosts[cnt] = jmb38x_ms_alloc_host(jm, cnt);
if (!jm->hosts[cnt])
break;
rc = memstick_add_host(jm->hosts[cnt]);
if (rc) {
jmb38x_ms_free_host(jm->hosts[cnt]);
jm->hosts[cnt] = NULL;
break;
}
}
if (cnt)
return 0;
rc = -ENODEV;
pci_set_drvdata(pdev, NULL);
kfree(jm);
err_out_int:
pci_release_regions(pdev);
err_out:
if (!pci_dev_busy)
pci_disable_device(pdev);
return rc;
}
static void jmb38x_ms_remove(struct pci_dev *dev)
{
struct jmb38x_ms *jm = pci_get_drvdata(dev);
struct jmb38x_ms_host *host;
int cnt;
unsigned long flags;
for (cnt = 0; cnt < jm->host_cnt; ++cnt) {
if (!jm->hosts[cnt])
break;
host = memstick_priv(jm->hosts[cnt]);
jm->hosts[cnt]->request = jmb38x_ms_dummy_submit;
tasklet_kill(&host->notify);
writel(0, host->addr + INT_SIGNAL_ENABLE);
writel(0, host->addr + INT_STATUS_ENABLE);
dev_dbg(&jm->pdev->dev, "interrupts off\n");
spin_lock_irqsave(&host->lock, flags);
if (host->req) {
host->req->error = -ETIME;
jmb38x_ms_complete_cmd(jm->hosts[cnt], 1);
}
spin_unlock_irqrestore(&host->lock, flags);
memstick_remove_host(jm->hosts[cnt]);
dev_dbg(&jm->pdev->dev, "host removed\n");
jmb38x_ms_free_host(jm->hosts[cnt]);
}
jmb38x_ms_pmos(dev, 0);
pci_set_drvdata(dev, NULL);
pci_release_regions(dev);
pci_disable_device(dev);
kfree(jm);
}
static struct pci_device_id jmb38x_ms_id_tbl [] = {
{ PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMB38X_MS) },
{ PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMB385_MS) },
{ PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMB390_MS) },
{ }
};
static struct pci_driver jmb38x_ms_driver = {
.name = DRIVER_NAME,
.id_table = jmb38x_ms_id_tbl,
.probe = jmb38x_ms_probe,
.remove = jmb38x_ms_remove,
.suspend = jmb38x_ms_suspend,
.resume = jmb38x_ms_resume
};
module_pci_driver(jmb38x_ms_driver);
MODULE_AUTHOR("Alex Dubov");
MODULE_DESCRIPTION("JMicron jmb38x MemoryStick driver");
MODULE_LICENSE("GPL");
MODULE_DEVICE_TABLE(pci, jmb38x_ms_id_tbl);
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