Commit 8f0fece6 authored by Alex Elder's avatar Alex Elder Committed by David S. Miller
Browse files

net: ipa: introduce GSI register IDs 



Create a new gsi_reg_id enumerated type, which identifies each GSI
register with a symbolic identifier.

Create a function that indicates whether a register ID is valid.

Signed-off-by: default avatarAlex Elder <elder@linaro.org>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 3c506add

drivers/net/ipa/gsi_reg.c

+65 −0
Original line number Diff line number Diff line
@@ -22,6 +22,69 @@ 
 */

#define GSI_EE_REG_ADJUST	0x0000d000			/* IPA v4.5+ */



/* Is this register ID valid for the current GSI version? */

static bool gsi_reg_id_valid(struct gsi *gsi, enum gsi_reg_id reg_id)

{

	switch (reg_id) {

	case INTER_EE_SRC_CH_IRQ_MSK:

	case INTER_EE_SRC_EV_CH_IRQ_MSK:

	case CH_C_CNTXT_0:

	case CH_C_CNTXT_1:

	case CH_C_CNTXT_2:

	case CH_C_CNTXT_3:

	case CH_C_QOS:

	case CH_C_SCRATCH_0:

	case CH_C_SCRATCH_1:

	case CH_C_SCRATCH_2:

	case CH_C_SCRATCH_3:

	case EV_CH_E_CNTXT_0:

	case EV_CH_E_CNTXT_1:

	case EV_CH_E_CNTXT_2:

	case EV_CH_E_CNTXT_3:

	case EV_CH_E_CNTXT_4:

	case EV_CH_E_CNTXT_8:

	case EV_CH_E_CNTXT_9:

	case EV_CH_E_CNTXT_10:

	case EV_CH_E_CNTXT_11:

	case EV_CH_E_CNTXT_12:

	case EV_CH_E_CNTXT_13:

	case EV_CH_E_SCRATCH_0:

	case EV_CH_E_SCRATCH_1:

	case CH_C_DOORBELL_0:

	case EV_CH_E_DOORBELL_0:

	case GSI_STATUS:

	case CH_CMD:

	case EV_CH_CMD:

	case GENERIC_CMD:

	case HW_PARAM_2:

	case CNTXT_TYPE_IRQ:

	case CNTXT_TYPE_IRQ_MSK:

	case CNTXT_SRC_CH_IRQ:

	case CNTXT_SRC_CH_IRQ_MSK:

	case CNTXT_SRC_CH_IRQ_CLR:

	case CNTXT_SRC_EV_CH_IRQ:

	case CNTXT_SRC_EV_CH_IRQ_MSK:

	case CNTXT_SRC_EV_CH_IRQ_CLR:

	case CNTXT_SRC_IEOB_IRQ:

	case CNTXT_SRC_IEOB_IRQ_MSK:

	case CNTXT_SRC_IEOB_IRQ_CLR:

	case CNTXT_GLOB_IRQ_STTS:

	case CNTXT_GLOB_IRQ_EN:

	case CNTXT_GLOB_IRQ_CLR:

	case CNTXT_GSI_IRQ_STTS:

	case CNTXT_GSI_IRQ_EN:

	case CNTXT_GSI_IRQ_CLR:

	case CNTXT_INTSET:

	case ERROR_LOG:

	case ERROR_LOG_CLR:

	case CNTXT_SCRATCH_0:

		return true;



	default:

		return false;

	}

}



/* Sets gsi->virt_raw and gsi->virt, and I/O maps the "gsi" memory range */

int gsi_reg_init(struct gsi *gsi, struct platform_device *pdev)

{
@@ -30,6 +93,8 @@ int gsi_reg_init(struct gsi *gsi, struct platform_device *pdev) 
	resource_size_t size;

	u32 adjust;



	(void)gsi_reg_id_valid;	/* Avoid a warning */



	/* Get GSI memory range and map it */

	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "gsi");

	if (!res) {

drivers/net/ipa/gsi_reg.h

+57 −0
Original line number Diff line number Diff line
@@ -38,6 +38,63 @@ 
 * (though the actual limit is hardware-dependent).

 */



/* enum gsi_reg_id - GSI register IDs */

enum gsi_reg_id {

	INTER_EE_SRC_CH_IRQ_MSK,			/* IPA v3.5+ */

	INTER_EE_SRC_EV_CH_IRQ_MSK,			/* IPA v3.5+ */

	CH_C_CNTXT_0,

	CH_C_CNTXT_1,

	CH_C_CNTXT_2,

	CH_C_CNTXT_3,

	CH_C_QOS,

	CH_C_SCRATCH_0,

	CH_C_SCRATCH_1,

	CH_C_SCRATCH_2,

	CH_C_SCRATCH_3,

	EV_CH_E_CNTXT_0,

	EV_CH_E_CNTXT_1,

	EV_CH_E_CNTXT_2,

	EV_CH_E_CNTXT_3,

	EV_CH_E_CNTXT_4,

	EV_CH_E_CNTXT_8,

	EV_CH_E_CNTXT_9,

	EV_CH_E_CNTXT_10,

	EV_CH_E_CNTXT_11,

	EV_CH_E_CNTXT_12,

	EV_CH_E_CNTXT_13,

	EV_CH_E_SCRATCH_0,

	EV_CH_E_SCRATCH_1,

	CH_C_DOORBELL_0,

	EV_CH_E_DOORBELL_0,

	GSI_STATUS,

	CH_CMD,

	EV_CH_CMD,

	GENERIC_CMD,

	HW_PARAM_2,					/* IPA v3.5.1+ */

	CNTXT_TYPE_IRQ,

	CNTXT_TYPE_IRQ_MSK,

	CNTXT_SRC_CH_IRQ,

	CNTXT_SRC_CH_IRQ_MSK,

	CNTXT_SRC_CH_IRQ_CLR,

	CNTXT_SRC_EV_CH_IRQ,

	CNTXT_SRC_EV_CH_IRQ_MSK,

	CNTXT_SRC_EV_CH_IRQ_CLR,

	CNTXT_SRC_IEOB_IRQ,

	CNTXT_SRC_IEOB_IRQ_MSK,

	CNTXT_SRC_IEOB_IRQ_CLR,

	CNTXT_GLOB_IRQ_STTS,

	CNTXT_GLOB_IRQ_EN,

	CNTXT_GLOB_IRQ_CLR,

	CNTXT_GSI_IRQ_STTS,

	CNTXT_GSI_IRQ_EN,

	CNTXT_GSI_IRQ_CLR,

	CNTXT_INTSET,

	ERROR_LOG,

	ERROR_LOG_CLR,

	CNTXT_SCRATCH_0,

	GSI_REG_ID_COUNT,				/* Last; not an ID */

};



/* The inter-EE IRQ registers are relative to gsi->virt_raw (IPA v3.5+) */



#define GSI_INTER_EE_SRC_CH_IRQ_MSK_OFFSET \