Merge branch 'cleanups'

Merge cleanups requested by Linus.

* cleanups: (3 commits)
  pnfs: Refactor the *_layout_mark_request_commit to use pnfs_layout_mark_request_commit
  nfs: Can call nfs_clear_page_commit() instead
  nfs: Provide and use helper functions for marking a page as unstable

1 files changed, 0 insertions, 404 deletions

diff --git a/drivers/scsi/csiostor/csio_hw_t4.c b/drivers/scsi/csiostor/csio_hw_t4.c
deleted file mode 100644
index 95d831857640..000000000000
--- a/drivers/scsi/csiostor/csio_hw_t4.c
+++ /dev/null
@@ -1,404 +0,0 @@
-/*
- * This file is part of the Chelsio FCoE driver for Linux.
- *
- * Copyright (c) 2008-2013 Chelsio Communications, Inc. All rights reserved.
- *
- * This software is available to you under a choice of one of two
- * licenses.  You may choose to be licensed under the terms of the GNU
- * General Public License (GPL) Version 2, available from the file
- * OpenIB.org BSD license below:
- *
- *     Redistribution and use in source and binary forms, with or
- *     without modification, are permitted provided that the following
- *     conditions are met:
- *
- *      - Redistributions of source code must retain the above
- *        copyright notice, this list of conditions and the following
- *      - Redistributions in binary form must reproduce the above
- *        copyright notice, this list of conditions and the following
- *        disclaimer in the documentation and/or other materials
- *        provided with the distribution.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
- * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
- * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
- * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
- * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
- * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- */
-
-#include "csio_hw.h"
-#include "csio_init.h"
-
-/*
- * Return the specified PCI-E Configuration Space register from our Physical
- * Function.  We try first via a Firmware LDST Command since we prefer to let
- * the firmware own all of these registers, but if that fails we go for it
- * directly ourselves.
- */
-static uint32_t
-csio_t4_read_pcie_cfg4(struct csio_hw *hw, int reg)
-{
-	u32 val = 0;
-	struct csio_mb *mbp;
-	int rv;
-	struct fw_ldst_cmd *ldst_cmd;
-
-	mbp = mempool_alloc(hw->mb_mempool, GFP_ATOMIC);
-	if (!mbp) {
-		CSIO_INC_STATS(hw, n_err_nomem);
-		pci_read_config_dword(hw->pdev, reg, &val);
-		return val;
-	}
-
-	csio_mb_ldst(hw, mbp, CSIO_MB_DEFAULT_TMO, reg);
-	rv = csio_mb_issue(hw, mbp);
-
-	/*
-	 * If the LDST Command suucceeded, exctract the returned register
-	 * value.  Otherwise read it directly ourself.
-	 */
-	if (rv == 0) {
-		ldst_cmd = (struct fw_ldst_cmd *)(mbp->mb);
-		val = ntohl(ldst_cmd->u.pcie.data[0]);
-	} else
-		pci_read_config_dword(hw->pdev, reg, &val);
-
-	mempool_free(mbp, hw->mb_mempool);
-
-	return val;
-}
-
-static int
-csio_t4_set_mem_win(struct csio_hw *hw, uint32_t win)
-{
-	u32 bar0;
-	u32 mem_win_base;
-
-	/*
-	 * Truncation intentional: we only read the bottom 32-bits of the
-	 * 64-bit BAR0/BAR1 ...  We use the hardware backdoor mechanism to
-	 * read BAR0 instead of using pci_resource_start() because we could be
-	 * operating from within a Virtual Machine which is trapping our
-	 * accesses to our Configuration Space and we need to set up the PCI-E
-	 * Memory Window decoders with the actual addresses which will be
-	 * coming across the PCI-E link.
-	 */
-	bar0 = csio_t4_read_pcie_cfg4(hw, PCI_BASE_ADDRESS_0);
-	bar0 &= PCI_BASE_ADDRESS_MEM_MASK;
-
-	mem_win_base = bar0 + MEMWIN_BASE;
-
-	/*
-	 * Set up memory window for accessing adapter memory ranges.  (Read
-	 * back MA register to ensure that changes propagate before we attempt
-	 * to use the new values.)
-	 */
-	csio_wr_reg32(hw, mem_win_base | BIR(0) |
-			  WINDOW(ilog2(MEMWIN_APERTURE) - 10),
-			  PCIE_MEM_ACCESS_REG(PCIE_MEM_ACCESS_BASE_WIN, win));
-	csio_rd_reg32(hw,
-		      PCIE_MEM_ACCESS_REG(PCIE_MEM_ACCESS_BASE_WIN, win));
-	return 0;
-}
-
-/*
- * Interrupt handler for the PCIE module.
- */
-static void
-csio_t4_pcie_intr_handler(struct csio_hw *hw)
-{
-	static struct intr_info sysbus_intr_info[] = {
-		{ RNPP, "RXNP array parity error", -1, 1 },
-		{ RPCP, "RXPC array parity error", -1, 1 },
-		{ RCIP, "RXCIF array parity error", -1, 1 },
-		{ RCCP, "Rx completions control array parity error", -1, 1 },
-		{ RFTP, "RXFT array parity error", -1, 1 },
-		{ 0, NULL, 0, 0 }
-	};
-	static struct intr_info pcie_port_intr_info[] = {
-		{ TPCP, "TXPC array parity error", -1, 1 },
-		{ TNPP, "TXNP array parity error", -1, 1 },
-		{ TFTP, "TXFT array parity error", -1, 1 },
-		{ TCAP, "TXCA array parity error", -1, 1 },
-		{ TCIP, "TXCIF array parity error", -1, 1 },
-		{ RCAP, "RXCA array parity error", -1, 1 },
-		{ OTDD, "outbound request TLP discarded", -1, 1 },
-		{ RDPE, "Rx data parity error", -1, 1 },
-		{ TDUE, "Tx uncorrectable data error", -1, 1 },
-		{ 0, NULL, 0, 0 }
-	};
-
-	static struct intr_info pcie_intr_info[] = {
-		{ MSIADDRLPERR, "MSI AddrL parity error", -1, 1 },
-		{ MSIADDRHPERR, "MSI AddrH parity error", -1, 1 },
-		{ MSIDATAPERR, "MSI data parity error", -1, 1 },
-		{ MSIXADDRLPERR, "MSI-X AddrL parity error", -1, 1 },
-		{ MSIXADDRHPERR, "MSI-X AddrH parity error", -1, 1 },
-		{ MSIXDATAPERR, "MSI-X data parity error", -1, 1 },
-		{ MSIXDIPERR, "MSI-X DI parity error", -1, 1 },
-		{ PIOCPLPERR, "PCI PIO completion FIFO parity error", -1, 1 },
-		{ PIOREQPERR, "PCI PIO request FIFO parity error", -1, 1 },
-		{ TARTAGPERR, "PCI PCI target tag FIFO parity error", -1, 1 },
-		{ CCNTPERR, "PCI CMD channel count parity error", -1, 1 },
-		{ CREQPERR, "PCI CMD channel request parity error", -1, 1 },
-		{ CRSPPERR, "PCI CMD channel response parity error", -1, 1 },
-		{ DCNTPERR, "PCI DMA channel count parity error", -1, 1 },
-		{ DREQPERR, "PCI DMA channel request parity error", -1, 1 },
-		{ DRSPPERR, "PCI DMA channel response parity error", -1, 1 },
-		{ HCNTPERR, "PCI HMA channel count parity error", -1, 1 },
-		{ HREQPERR, "PCI HMA channel request parity error", -1, 1 },
-		{ HRSPPERR, "PCI HMA channel response parity error", -1, 1 },
-		{ CFGSNPPERR, "PCI config snoop FIFO parity error", -1, 1 },
-		{ FIDPERR, "PCI FID parity error", -1, 1 },
-		{ INTXCLRPERR, "PCI INTx clear parity error", -1, 1 },
-		{ MATAGPERR, "PCI MA tag parity error", -1, 1 },
-		{ PIOTAGPERR, "PCI PIO tag parity error", -1, 1 },
-		{ RXCPLPERR, "PCI Rx completion parity error", -1, 1 },
-		{ RXWRPERR, "PCI Rx write parity error", -1, 1 },
-		{ RPLPERR, "PCI replay buffer parity error", -1, 1 },
-		{ PCIESINT, "PCI core secondary fault", -1, 1 },
-		{ PCIEPINT, "PCI core primary fault", -1, 1 },
-		{ UNXSPLCPLERR, "PCI unexpected split completion error", -1,
-		  0 },
-		{ 0, NULL, 0, 0 }
-	};
-
-	int fat;
-	fat = csio_handle_intr_status(hw,
-				      PCIE_CORE_UTL_SYSTEM_BUS_AGENT_STATUS,
-				      sysbus_intr_info) +
-	      csio_handle_intr_status(hw,
-				      PCIE_CORE_UTL_PCI_EXPRESS_PORT_STATUS,
-				      pcie_port_intr_info) +
-	      csio_handle_intr_status(hw, PCIE_INT_CAUSE, pcie_intr_info);
-	if (fat)
-		csio_hw_fatal_err(hw);
-}
-
-/*
- * csio_t4_flash_cfg_addr - return the address of the flash configuration file
- * @hw: the HW module
- *
- * Return the address within the flash where the Firmware Configuration
- * File is stored.
- */
-static unsigned int
-csio_t4_flash_cfg_addr(struct csio_hw *hw)
-{
-	return FLASH_CFG_OFFSET;
-}
-
-/*
- *      csio_t4_mc_read - read from MC through backdoor accesses
- *      @hw: the hw module
- *      @idx: not used for T4 adapter
- *      @addr: address of first byte requested
- *      @data: 64 bytes of data containing the requested address
- *      @ecc: where to store the corresponding 64-bit ECC word
- *
- *      Read 64 bytes of data from MC starting at a 64-byte-aligned address
- *      that covers the requested address @addr.  If @parity is not %NULL it
- *      is assigned the 64-bit ECC word for the read data.
- */
-static int
-csio_t4_mc_read(struct csio_hw *hw, int idx, uint32_t addr, __be32 *data,
-		uint64_t *ecc)
-{
-	int i;
-
-	if (csio_rd_reg32(hw, MC_BIST_CMD) & START_BIST)
-		return -EBUSY;
-	csio_wr_reg32(hw, addr & ~0x3fU, MC_BIST_CMD_ADDR);
-	csio_wr_reg32(hw, 64, MC_BIST_CMD_LEN);
-	csio_wr_reg32(hw, 0xc, MC_BIST_DATA_PATTERN);
-	csio_wr_reg32(hw, BIST_OPCODE(1) | START_BIST | BIST_CMD_GAP(1),
-		      MC_BIST_CMD);
-	i = csio_hw_wait_op_done_val(hw, MC_BIST_CMD, START_BIST,
-				     0, 10, 1, NULL);
-	if (i)
-		return i;
-
-#define MC_DATA(i) MC_BIST_STATUS_REG(MC_BIST_STATUS_RDATA, i)
-
-	for (i = 15; i >= 0; i--)
-		*data++ = htonl(csio_rd_reg32(hw, MC_DATA(i)));
-	if (ecc)
-		*ecc = csio_rd_reg64(hw, MC_DATA(16));
-#undef MC_DATA
-	return 0;
-}
-
-/*
- *      csio_t4_edc_read - read from EDC through backdoor accesses
- *      @hw: the hw module
- *      @idx: which EDC to access
- *      @addr: address of first byte requested
- *      @data: 64 bytes of data containing the requested address
- *      @ecc: where to store the corresponding 64-bit ECC word
- *
- *      Read 64 bytes of data from EDC starting at a 64-byte-aligned address
- *      that covers the requested address @addr.  If @parity is not %NULL it
- *      is assigned the 64-bit ECC word for the read data.
- */
-static int
-csio_t4_edc_read(struct csio_hw *hw, int idx, uint32_t addr, __be32 *data,
-		uint64_t *ecc)
-{
-	int i;
-
-	idx *= EDC_STRIDE;
-	if (csio_rd_reg32(hw, EDC_BIST_CMD + idx) & START_BIST)
-		return -EBUSY;
-	csio_wr_reg32(hw, addr & ~0x3fU, EDC_BIST_CMD_ADDR + idx);
-	csio_wr_reg32(hw, 64, EDC_BIST_CMD_LEN + idx);
-	csio_wr_reg32(hw, 0xc, EDC_BIST_DATA_PATTERN + idx);
-	csio_wr_reg32(hw, BIST_OPCODE(1) | BIST_CMD_GAP(1) | START_BIST,
-		      EDC_BIST_CMD + idx);
-	i = csio_hw_wait_op_done_val(hw, EDC_BIST_CMD + idx, START_BIST,
-				     0, 10, 1, NULL);
-	if (i)
-		return i;
-
-#define EDC_DATA(i) (EDC_BIST_STATUS_REG(EDC_BIST_STATUS_RDATA, i) + idx)
-
-	for (i = 15; i >= 0; i--)
-		*data++ = htonl(csio_rd_reg32(hw, EDC_DATA(i)));
-	if (ecc)
-		*ecc = csio_rd_reg64(hw, EDC_DATA(16));
-#undef EDC_DATA
-	return 0;
-}
-
-/*
- * csio_t4_memory_rw - read/write EDC 0, EDC 1 or MC via PCIE memory window
- * @hw: the csio_hw
- * @win: PCI-E memory Window to use
- * @mtype: memory type: MEM_EDC0, MEM_EDC1, MEM_MC0 (or MEM_MC) or MEM_MC1
- * @addr: address within indicated memory type
- * @len: amount of memory to transfer
- * @buf: host memory buffer
- * @dir: direction of transfer 1 => read, 0 => write
- *
- * Reads/writes an [almost] arbitrary memory region in the firmware: the
- * firmware memory address, length and host buffer must be aligned on
- * 32-bit boudaries.  The memory is transferred as a raw byte sequence
- * from/to the firmware's memory.  If this memory contains data
- * structures which contain multi-byte integers, it's the callers
- * responsibility to perform appropriate byte order conversions.
- */
-static int
-csio_t4_memory_rw(struct csio_hw *hw, u32 win, int mtype, u32 addr,
-		u32 len, uint32_t *buf, int dir)
-{
-	u32 pos, start, offset, memoffset, bar0;
-	u32 edc_size, mc_size, mem_reg, mem_aperture, mem_base;
-
-	/*
-	 * Argument sanity checks ...
-	 */
-	if ((addr & 0x3) || (len & 0x3))
-		return -EINVAL;
-
-	/* Offset into the region of memory which is being accessed
-	 * MEM_EDC0 = 0
-	 * MEM_EDC1 = 1
-	 * MEM_MC   = 2 -- T4
-	 */
-	edc_size  = EDRAM0_SIZE_G(csio_rd_reg32(hw, MA_EDRAM0_BAR_A));
-	if (mtype != MEM_MC1)
-		memoffset = (mtype * (edc_size * 1024 * 1024));
-	else {
-		mc_size = EXT_MEM_SIZE_G(csio_rd_reg32(hw,
-						       MA_EXT_MEMORY_BAR_A));
-		memoffset = (MEM_MC0 * edc_size + mc_size) * 1024 * 1024;
-	}
-
-	/* Determine the PCIE_MEM_ACCESS_OFFSET */
-	addr = addr + memoffset;
-
-	/*
-	 * Each PCI-E Memory Window is programmed with a window size -- or
-	 * "aperture" -- which controls the granularity of its mapping onto
-	 * adapter memory.  We need to grab that aperture in order to know
-	 * how to use the specified window.  The window is also programmed
-	 * with the base address of the Memory Window in BAR0's address
-	 * space.  For T4 this is an absolute PCI-E Bus Address.  For T5
-	 * the address is relative to BAR0.
-	 */
-	mem_reg = csio_rd_reg32(hw,
-			PCIE_MEM_ACCESS_REG(PCIE_MEM_ACCESS_BASE_WIN, win));
-	mem_aperture = 1 << (WINDOW(mem_reg) + 10);
-	mem_base = GET_PCIEOFST(mem_reg) << 10;
-
-	bar0 = csio_t4_read_pcie_cfg4(hw, PCI_BASE_ADDRESS_0);
-	bar0 &= PCI_BASE_ADDRESS_MEM_MASK;
-	mem_base -= bar0;
-
-	start = addr & ~(mem_aperture-1);
-	offset = addr - start;
-
-	csio_dbg(hw, "csio_t4_memory_rw: mem_reg: 0x%x, mem_aperture: 0x%x\n",
-		 mem_reg, mem_aperture);
-	csio_dbg(hw, "csio_t4_memory_rw: mem_base: 0x%x, mem_offset: 0x%x\n",
-		 mem_base, memoffset);
-	csio_dbg(hw, "csio_t4_memory_rw: bar0: 0x%x, start:0x%x, offset:0x%x\n",
-		 bar0, start, offset);
-	csio_dbg(hw, "csio_t4_memory_rw: mtype: %d, addr: 0x%x, len: %d\n",
-		 mtype, addr, len);
-
-	for (pos = start; len > 0; pos += mem_aperture, offset = 0) {
-		/*
-		 * Move PCI-E Memory Window to our current transfer
-		 * position.  Read it back to ensure that changes propagate
-		 * before we attempt to use the new value.
-		 */
-		csio_wr_reg32(hw, pos,
-			PCIE_MEM_ACCESS_REG(PCIE_MEM_ACCESS_OFFSET, win));
-		csio_rd_reg32(hw,
-			PCIE_MEM_ACCESS_REG(PCIE_MEM_ACCESS_OFFSET, win));
-
-		while (offset < mem_aperture && len > 0) {
-			if (dir)
-				*buf++ = csio_rd_reg32(hw, mem_base + offset);
-			else
-				csio_wr_reg32(hw, *buf++, mem_base + offset);
-
-			offset += sizeof(__be32);
-			len -= sizeof(__be32);
-		}
-	}
-	return 0;
-}
-
-/*
- * csio_t4_dfs_create_ext_mem - setup debugfs for MC to read the values
- * @hw: the csio_hw
- *
- * This function creates files in the debugfs with external memory region MC.
- */
-static void
-csio_t4_dfs_create_ext_mem(struct csio_hw *hw)
-{
-	u32 size;
-	int i = csio_rd_reg32(hw, MA_TARGET_MEM_ENABLE_A);
-
-	if (i & EXT_MEM_ENABLE_F) {
-		size = csio_rd_reg32(hw, MA_EXT_MEMORY_BAR_A);
-		csio_add_debugfs_mem(hw, "mc", MEM_MC,
-				     EXT_MEM_SIZE_G(size));
-	}
-}
-
-/* T4 adapter specific function */
-struct csio_hw_chip_ops t4_ops = {
-	.chip_set_mem_win		= csio_t4_set_mem_win,
-	.chip_pcie_intr_handler		= csio_t4_pcie_intr_handler,
-	.chip_flash_cfg_addr		= csio_t4_flash_cfg_addr,
-	.chip_mc_read			= csio_t4_mc_read,
-	.chip_edc_read			= csio_t4_edc_read,
-	.chip_memory_rw			= csio_t4_memory_rw,
-	.chip_dfs_create_ext_mem	= csio_t4_dfs_create_ext_mem,
-};