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5f6df173f9
The ice_sq_done function is used to check the control queue head register and determine whether or not the control queue processing is done. This function is called in a loop checking against jiffies for a specified timeout. The pattern of reading a register in a loop until a condition is true or a timeout is reached is a relatively common pattern. In fact, the kernel provides a read_poll_timeout function implementing this behavior in <linux/iopoll.h> Use of read_poll_timeout is preferred over directly coding these loops. However, using it in the ice driver is a bit more difficult because of the rd32 wrapper. Implement a rd32_poll_timeout wrapper based on read_poll_timeout. Refactor ice_sq_done to use rd32_poll_timeout, replacing the loop calling ice_sq_done in ice_sq_send_cmd. This simplifies the logic down to a single ice_sq_done() call. The implementation of rd32_poll_timeout uses microseconds for its timeout value, so update the CQ timeout macros used to be specified in microseconds units as well instead of using HZ for jiffies. Signed-off-by: Jacob Keller <jacob.e.keller@intel.com> Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@intel.com> Tested-by: Pucha Himasekhar Reddy <himasekharx.reddy.pucha@intel.com> (A Contingent worker at Intel) Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
86 lines
2.3 KiB
C
86 lines
2.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/* Copyright (c) 2018, Intel Corporation. */
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#ifndef _ICE_OSDEP_H_
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#define _ICE_OSDEP_H_
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#include <linux/types.h>
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#include <linux/ctype.h>
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#include <linux/delay.h>
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#include <linux/io.h>
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#include <linux/bitops.h>
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#include <linux/ethtool.h>
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#include <linux/etherdevice.h>
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#include <linux/if_ether.h>
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#include <linux/iopoll.h>
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#include <linux/pci_ids.h>
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#ifndef CONFIG_64BIT
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#include <linux/io-64-nonatomic-lo-hi.h>
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#endif
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#include <net/udp_tunnel.h>
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#define wr32(a, reg, value) writel((value), ((a)->hw_addr + (reg)))
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#define rd32(a, reg) readl((a)->hw_addr + (reg))
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#define wr64(a, reg, value) writeq((value), ((a)->hw_addr + (reg)))
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#define rd64(a, reg) readq((a)->hw_addr + (reg))
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#define rd32_poll_timeout(a, addr, val, cond, delay_us, timeout_us) \
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read_poll_timeout(rd32, val, cond, delay_us, timeout_us, false, a, addr)
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#define ice_flush(a) rd32((a), GLGEN_STAT)
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#define ICE_M(m, s) ((m ## U) << (s))
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struct ice_dma_mem {
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void *va;
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dma_addr_t pa;
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size_t size;
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};
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struct ice_hw;
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struct device *ice_hw_to_dev(struct ice_hw *hw);
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#ifdef CONFIG_DYNAMIC_DEBUG
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#define ice_debug(hw, type, fmt, args...) \
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dev_dbg(ice_hw_to_dev(hw), fmt, ##args)
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#define ice_debug_array(hw, type, rowsize, groupsize, buf, len) \
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print_hex_dump_debug(KBUILD_MODNAME " ", \
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DUMP_PREFIX_OFFSET, rowsize, \
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groupsize, buf, len, false)
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#else
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#define ice_debug(hw, type, fmt, args...) \
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do { \
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if ((type) & (hw)->debug_mask) \
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dev_info(ice_hw_to_dev(hw), fmt, ##args); \
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} while (0)
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#ifdef DEBUG
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#define ice_debug_array(hw, type, rowsize, groupsize, buf, len) \
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do { \
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if ((type) & (hw)->debug_mask) \
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print_hex_dump_debug(KBUILD_MODNAME, \
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DUMP_PREFIX_OFFSET, \
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rowsize, groupsize, buf, \
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len, false); \
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} while (0)
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#else
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#define ice_debug_array(hw, type, rowsize, groupsize, buf, len) \
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do { \
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struct ice_hw *hw_l = hw; \
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if ((type) & (hw_l)->debug_mask) { \
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u16 len_l = len; \
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u8 *buf_l = buf; \
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int i; \
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for (i = 0; i < (len_l - 16); i += 16) \
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ice_debug(hw_l, type, "0x%04X %16ph\n",\
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i, ((buf_l) + i)); \
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if (i < len_l) \
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ice_debug(hw_l, type, "0x%04X %*ph\n", \
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i, ((len_l) - i), ((buf_l) + i));\
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} \
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} while (0)
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#endif /* DEBUG */
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#endif /* CONFIG_DYNAMIC_DEBUG */
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#endif /* _ICE_OSDEP_H_ */
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