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Date: Wed, 16 Mar 2016 18:26:28 +0800
From: oulijun <oulijun@...wei.com>
To: <dledford@...hat.com>, <sean.hefty@...el.com>,
<hal.rosenstock@...il.com>, <davem@...emloft.net>,
<jeffrey.t.kirsher@...el.com>, <jiri@...lanox.com>,
<ogerlitz@...lanox.com>, <linux-rdma@...r.kernel.org>,
<linux-kernel@...r.kernel.org>, <netdev@...r.kernel.org>,
<gongyangming@...wei.com>, <xiaokun@...wei.com>,
<tangchaofei@...wei.com>, <haifeng.wei@...wei.com>,
<yisen.zhuang@...wei.com>, <yankejian@...wei.com>,
<lisheng011@...wei.com>, <charles.chenxin@...wei.com>,
<linuxarm@...wei.com>
Subject: Re: [PATCH 1/3] infiniband: IB/hns: add Hisilicon RoCE support
Hi dledford, thanks for reviewing.
I have modified according to your reivews. I will send a new patch
at soon.
thanks
Lijun Ou
On 2016/3/12 18:39, Leon Romanovsky wrote:
> On Fri, Mar 11, 2016 at 06:37:09PM +0800, Lijun Ou wrote:
>> The driver for Hisilicon RoCE is a platform driver.
>> The driver will support mulitple versions of hardware. Currently only "v1"
>> for hip06 SOC is supported.
>> The driver includes two parts: common driver and hardware-specific
>> operations. hns_roce_v1_hw.c and hns_roce_v1_hw.h are files for
>> hardware-specific operations only for v1 engine, and other files(.c and .h)
>> for common algorithm and common hardware operations
>>
>> Signed-off-by: Lijun Ou <oulijun@...wei.com>
>> Signed-off-by: Wei Hu(Xavier) <xavier.huwei@...wei.com>
>> Signed-off-by: Znlong <zhaonenglong@...wei.com>
>> ---
>> drivers/infiniband/Kconfig | 2 +-
>> drivers/infiniband/hw/Makefile | 1 +
>> drivers/infiniband/hw/hisilicon/hns/Kconfig | 10 +
>> drivers/infiniband/hw/hisilicon/hns/Makefile | 9 +
>> drivers/infiniband/hw/hisilicon/hns/hns_roce_ah.c | 114 +
>> .../infiniband/hw/hisilicon/hns/hns_roce_alloc.c | 253 ++
>> drivers/infiniband/hw/hisilicon/hns/hns_roce_cmd.c | 354 +++
>> drivers/infiniband/hw/hisilicon/hns/hns_roce_cmd.h | 163 ++
>> .../infiniband/hw/hisilicon/hns/hns_roce_common.h | 704 +++++
>> drivers/infiniband/hw/hisilicon/hns/hns_roce_cq.c | 454 +++
>> .../infiniband/hw/hisilicon/hns/hns_roce_device.h | 840 ++++++
>> drivers/infiniband/hw/hisilicon/hns/hns_roce_eq.c | 798 ++++++
>> drivers/infiniband/hw/hisilicon/hns/hns_roce_eq.h | 138 +
>> drivers/infiniband/hw/hisilicon/hns/hns_roce_icm.c | 608 ++++
>> drivers/infiniband/hw/hisilicon/hns/hns_roce_icm.h | 121 +
>> .../infiniband/hw/hisilicon/hns/hns_roce_main.c | 1124 ++++++++
>> drivers/infiniband/hw/hisilicon/hns/hns_roce_mr.c | 637 +++++
>> drivers/infiniband/hw/hisilicon/hns/hns_roce_pd.c | 129 +
>> drivers/infiniband/hw/hisilicon/hns/hns_roce_qp.c | 890 ++++++
>> .../infiniband/hw/hisilicon/hns/hns_roce_user.h | 31 +
>> .../infiniband/hw/hisilicon/hns/hns_roce_v1_hw.c | 2992 ++++++++++++++++++++
>> .../infiniband/hw/hisilicon/hns/hns_roce_v1_hw.h | 1068 +++++++
>> 22 files changed, 11439 insertions(+), 1 deletion(-)
>> create mode 100644 drivers/infiniband/hw/hisilicon/hns/Kconfig
>> create mode 100644 drivers/infiniband/hw/hisilicon/hns/Makefile
>> create mode 100644 drivers/infiniband/hw/hisilicon/hns/hns_roce_ah.c
>> create mode 100644 drivers/infiniband/hw/hisilicon/hns/hns_roce_alloc.c
>> create mode 100644 drivers/infiniband/hw/hisilicon/hns/hns_roce_cmd.c
>> create mode 100644 drivers/infiniband/hw/hisilicon/hns/hns_roce_cmd.h
>> create mode 100644 drivers/infiniband/hw/hisilicon/hns/hns_roce_common.h
>> create mode 100644 drivers/infiniband/hw/hisilicon/hns/hns_roce_cq.c
>> create mode 100644 drivers/infiniband/hw/hisilicon/hns/hns_roce_device.h
>> create mode 100644 drivers/infiniband/hw/hisilicon/hns/hns_roce_eq.c
>> create mode 100644 drivers/infiniband/hw/hisilicon/hns/hns_roce_eq.h
>> create mode 100644 drivers/infiniband/hw/hisilicon/hns/hns_roce_icm.c
>> create mode 100644 drivers/infiniband/hw/hisilicon/hns/hns_roce_icm.h
>> create mode 100644 drivers/infiniband/hw/hisilicon/hns/hns_roce_main.c
>> create mode 100644 drivers/infiniband/hw/hisilicon/hns/hns_roce_mr.c
>> create mode 100644 drivers/infiniband/hw/hisilicon/hns/hns_roce_pd.c
>> create mode 100644 drivers/infiniband/hw/hisilicon/hns/hns_roce_qp.c
>> create mode 100644 drivers/infiniband/hw/hisilicon/hns/hns_roce_user.h
>> create mode 100644 drivers/infiniband/hw/hisilicon/hns/hns_roce_v1_hw.c
>> create mode 100644 drivers/infiniband/hw/hisilicon/hns/hns_roce_v1_hw.h
>>
>> diff --git a/drivers/infiniband/Kconfig b/drivers/infiniband/Kconfig
>> index 8a8440c..c7a24bb 100644
>> --- a/drivers/infiniband/Kconfig
>> +++ b/drivers/infiniband/Kconfig
>> @@ -73,7 +73,7 @@ source "drivers/infiniband/hw/mlx5/Kconfig"
>> source "drivers/infiniband/hw/nes/Kconfig"
>> source "drivers/infiniband/hw/ocrdma/Kconfig"
>> source "drivers/infiniband/hw/usnic/Kconfig"
>> -
>
> No need to remove this line. It separates HW from ULPs.
>
>> +source "drivers/infiniband/hw/hisilicon/hns/Kconfig"
>> source "drivers/infiniband/ulp/ipoib/Kconfig"
>>
>> source "drivers/infiniband/ulp/srp/Kconfig"
>
> <snip>
>
>> +int hns_roce_bitmap_alloc_range(
>> + struct hns_roce_bitmap *bitmap,
>> + int cnt, int align, u32 *obj)
>
> You have indentation issues.
>
>> +{
>> + int i;
>> + int ret = 0;
>> +
>> + if (likely(cnt == 1 && align == 1))
>> + return hns_roce_bitmap_alloc(bitmap, obj);
>> +
>> + spin_lock(&bitmap->lock);
>> +
>> + *obj = bitmap_find_next_zero_area(bitmap->table, bitmap->max,
>> + bitmap->last, cnt, align - 1);
>> + if (*obj >= bitmap->max) {
>> + bitmap->top = (bitmap->top + bitmap->max + bitmap->reserved_top)
>> + & bitmap->mask;
>> + *obj = bitmap_find_next_zero_area(bitmap->table, bitmap->max, 0,
>> + cnt, align - 1);
>> + }
>> +
>> + if (*obj < bitmap->max) {
>> + for (i = 0; i < cnt; i++)
>> + set_bit(*obj + i, bitmap->table);
>> +
>> + if (*obj == bitmap->last) {
>> + bitmap->last = (*obj + cnt);
>> + if (bitmap->last >= bitmap->max)
>> + bitmap->last = 0;
>> + }
>> + *obj |= bitmap->top;
>> + } else {
>> + ret = -1;
>> + }
>> +
>> + spin_unlock(&bitmap->lock);
>> +
>> + return ret;
>> +}
>> +
>> +void hns_roce_bitmap_free_range(
>> + struct hns_roce_bitmap *bitmap,
>> + u32 obj,
>> + int cnt)
>> +{
>> + int i;
>> +
>> + obj &= bitmap->max + bitmap->reserved_top - 1;
>> +
>> + spin_lock(&bitmap->lock);
>> + for (i = 0; i < cnt; i++)
>> + clear_bit(obj + i, bitmap->table);
>> +
>> + bitmap->last = min(bitmap->last, obj);
>> + bitmap->top = (bitmap->top + bitmap->max + bitmap->reserved_top)
>> + & bitmap->mask;
>> + spin_unlock(&bitmap->lock);
>> +}
>> +
>> +int hns_roce_bitmap_init(struct hns_roce_bitmap *bitmap, u32 num,
>> + u32 mask, u32 reserved_bot,
>> + u32 reserved_top)
>> +{
>> + u32 i;
>> +
>> + if (num != roundup_pow_of_two(num))
>> + return -EINVAL;
>> +
>> + bitmap->last = 0;
>> + bitmap->top = 0;
>> + bitmap->max = num - reserved_top;
>> + bitmap->mask = mask;
>> + bitmap->reserved_top = reserved_top;
>> + spin_lock_init(&bitmap->lock);
>> + bitmap->table =
>> + kzalloc(BITS_TO_LONGS(bitmap->max) * sizeof(long), GFP_KERNEL);
>
> Here and below, please consider to use kcalloc.
>
>> + if (!bitmap->table)
>> + return -ENOMEM;
>> +
>> + for (i = 0; i < reserved_bot; ++i)
>
> .
>
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