[dpdk-dev] [PATCH 16/32] net/dpaa2: dpio add support to check SOC type
Hemant Agrawal
hemant.agrawal at nxp.com
Thu Dec 15 08:01:58 CET 2016
On 12/15/2016 12:04 PM, Jerin Jacob wrote:
> On Sun, Dec 04, 2016 at 11:47:11PM +0530, Hemant Agrawal wrote:
>> Signed-off-by: Hemant Agrawal <hemant.agrawal at nxp.com>
>> ---
>> drivers/net/dpaa2/base/dpaa2_hw_dpio.c | 74 ++++++++++++++++++++++++++++++++++
>> 1 file changed, 74 insertions(+)
>>
>> diff --git a/drivers/net/dpaa2/base/dpaa2_hw_dpio.c b/drivers/net/dpaa2/base/dpaa2_hw_dpio.c
>> index 9c6eb96..3b8f87d 100644
>> --- a/drivers/net/dpaa2/base/dpaa2_hw_dpio.c
>> +++ b/drivers/net/dpaa2/base/dpaa2_hw_dpio.c
>> @@ -70,6 +70,18 @@
>> static struct dpio_device_list *dpio_dev_list; /*!< DPIO device list */
>> static uint32_t io_space_count;
>>
>> +#define ARM_CORTEX_A53 0xD03
>> +#define ARM_CORTEX_A57 0xD07
>> +#define ARM_CORTEX_A72 0xD08
>
> May not be good idea to have generic ARM part number definition in driver
> file.
>
>> +
>> +static int dpaa2_soc_core = ARM_CORTEX_A72;
>> +
>> +#define NXP_LS2085 1
>> +#define NXP_LS2088 2
>> +#define NXP_LS1088 3
>> +
>> +static int dpaa2_soc_family = NXP_LS2088;
>> +
>> /*Stashing Macros default for LS208x*/
>> static int dpaa2_core_cluster_base = 0x04;
>> static int dpaa2_cluster_sz = 2;
>> @@ -101,6 +113,58 @@
>> return dpaa2_core_cluster_base + x;
>> }
>>
>> +static int cpuinfo_arm(FILE *file)
>> +{
>> + char str[128], *pos;
>> + int part = -1;
>> +
>> + #define ARM_CORTEX_A53_INFO "Cortex-A53"
>> + #define ARM_CORTEX_A57_INFO "Cortex-A57"
>> + #define ARM_CORTEX_A72_INFO "Cortex-A72"
>> +
>> + while (fgets(str, sizeof(str), file) != NULL) {
>> + if (part >= 0)
>> + break;
>> + pos = strstr(str, "CPU part");
>> + if (pos != NULL) {
>> + pos = strchr(pos, ':');
>> + if (pos != NULL)
>> + sscanf(++pos, "%x", &part);
>> + }
>> + }
>> +
>> + dpaa2_soc_core = part;
>> + if (part == ARM_CORTEX_A53) {
>> + dpaa2_soc_family = NXP_LS1088;
>> + printf("\n########## Detected NXP LS108x with %s\n",
>> + ARM_CORTEX_A53_INFO);
>> + } else if (part == ARM_CORTEX_A57) {
>> + dpaa2_soc_family = NXP_LS2085;
>> + printf("\n########## Detected NXP LS208x Rev1.0 with %s\n",
>> + ARM_CORTEX_A57_INFO);
>> + } else if (part == ARM_CORTEX_A72) {
>> + dpaa2_soc_family = NXP_LS2088;
>> + printf("\n########## Detected NXP LS208x with %s\n",
>> + ARM_CORTEX_A72_INFO);
>> + }
>> + return 0;
>> +}
>> +
>> +static void
>> +check_cpu_part(void)
>> +{
>> + FILE *stream;
>> +
>> + stream = fopen("/proc/cpuinfo", "r");
>> + if (!stream) {
>> + PMD_INIT_LOG(WARNING, "Unable to open /proc/cpuinfo\n");
>> + return;
>> + }
>> + cpuinfo_arm(stream);
>> +
>> + fclose(stream);
>> +}
>> +
>> static int
>> configure_dpio_qbman_swp(struct dpaa2_dpio_dev *dpio_dev)
>> {
>> @@ -326,6 +390,16 @@ static inline struct dpaa2_dpio_dev *dpaa2_get_qbman_swp(void)
>> {
>> struct dpaa2_dpio_dev *dpio_dev;
>> struct vfio_region_info reg_info = { .argsz = sizeof(reg_info)};
>> + static int first_time;
>> +
>> + if (!first_time) {
>> + check_cpu_part();
>> + if (dpaa2_soc_family == NXP_LS1088) {
>> + dpaa2_core_cluster_base = 0x02;
>> + dpaa2_cluster_sz = 4;
> Can this device configuration information passed through dt/the means
> where you are populating the fsl bus for dpio ?
>
> if not arm64 cpu part identification code can go in arm64 common
> code. Even better if we have EAL API for same. Looks like x86 similar
> attribute called "model"
>
This is good idea to have something equivalent in EAL. let me try to
make an attempt on it.
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