soc/intel/common/block/imc: Drop unused code

Nothing uses this code anymore.

Change-Id: I5da1020597c126a40b015beb6e43fb0168aa330f
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/45046
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Andrey Petrov <andrey.petrov@gmail.com>

3 files changed, 0 insertions, 173 deletions

diff --git a/src/soc/intel/common/block/imc/Kconfig b/src/soc/intel/common/block/imc/Kconfig
deleted file mode 100644
index 490b80ebeb..0000000000
--- a/src/soc/intel/common/block/imc/Kconfig
+++ /dev/null
@@ -1,7 +0,0 @@
-config SOC_INTEL_COMMON_BLOCK_IMC
-	bool
-	depends on MMCONF_SUPPORT
-	default n
-	help
-	  Driver for communication with Integrated Memory Controller that is found on
-	  some Xeon server processors.
diff --git a/src/soc/intel/common/block/imc/Makefile.inc b/src/soc/intel/common/block/imc/Makefile.inc
deleted file mode 100644
index a6bc985eb2..0000000000
--- a/src/soc/intel/common/block/imc/Makefile.inc
+++ /dev/null
@@ -1,9 +0,0 @@
-ifeq ($(CONFIG_SOC_INTEL_COMMON_BLOCK_IMC),y)
-
-bootblock-y += imc.c
-romstage-y += imc.c
-verstage-y += imc.c
-postcar-y += imc.c
-ramstage-y += imc.c
-
-endif
diff --git a/src/soc/intel/common/block/imc/imc.c b/src/soc/intel/common/block/imc/imc.c
deleted file mode 100644
index 57c7fa8359..0000000000
--- a/src/soc/intel/common/block/imc/imc.c
+++ /dev/null
@@ -1,157 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-only */
-
-/*
- * Please note: the driver uses MMIO PCIe register access. IO based access will
- * not work.
- */
-
-#include <console/console.h>
-#include <device/pci_ops.h>
-#include <intelblocks/imc.h>
-#include <soc/pci_devs.h>
-#include <timer.h>
-
-#define IMC_SMBUS_TIMEOUT_MS           100
-#define IMC_SMBCNTL_DTI_TSOD           0x3
-#define IMC_SMBCNTL_DTI_EEPROM         0xa
-#define IMC_SMBCNTL_DTI_WP_EEPROM      0x6
-
-#define SMBSTAT(i)                     (0x180 + 0x10 * i)
-#define SMBCMD(i)                      (0x184 + 0x10 * i)
-#define SMBCNTL(i)                     (0x188 + 0x10 * i)
-
-#define SMBSTAT_RDO                    (1u << 31)  /* Read Data Valid */
-#define SMBSTAT_WOD                    (1u << 30)  /* Write Operation Done */
-#define SMBSTAT_SBE                    (1u << 29)  /* SMBus Error */
-#define SMBSTAT_SMB_BUSY               (1u << 28)  /* SMBus Busy State */
-
-#define SMBCMD_TRIGGER                 (1u << 31)  /* CMD Trigger */
-#define SMBCMD_PNTR_SEL                (1u << 30)  /* HW polls TSOD with pointer */
-#define SMBCMD_WORD_ACCESS             (1u << 29)  /* word (vs byte) access */
-#define SMBCMD_TYPE_MASK               (3u << 27)  /* Mask for access type */
-#define SMBCMD_TYPE_READ               (0u << 27)  /* Read */
-#define SMBCMD_TYPE_WRITE              (1u << 27)  /* Write */
-#define SMBCMD_TYPE_PNTR_WRITE         (3u << 27)  /* Write to pointer */
-#define SMBCMD_SA_MASK                 (7u << 24)  /* Slave Address high bits */
-#define SMBCMD_SA_SHIFT                24
-#define SMBCMD_BA_MASK                 0xff0000    /* Bus Txn address */
-#define SMBCMD_BA_SHIFT                16
-#define SMBCMD_WDATA_MASK              0xffff      /* data to write */
-
-#define SMBCNTL_DTI_MASK               0xf0000000  /* Slave Address low bits */
-#define SMBCNTL_DTI_SHIFT              28          /* Slave Address low bits */
-#define SMBCNTL_CKOVRD                 (1u << 27)  /* # Clock Override */
-#define SMBCNTL_DIS_WRT                (1u << 26)  /* Disable Write (sadly) */
-#define SMBCNTL_SOFT_RST               (1u << 10)  /* Soft Reset */
-#define SMBCNTL_TSOD_POLL_EN           (1u << 8)   /* TSOD Polling Enable */
-
-static bool poll_ready(pci_devfn_t dev, enum memory_controller_id mcid, uint32_t *status)
-{
-	struct stopwatch sw;
-
-	stopwatch_init_msecs_expire(&sw, IMC_SMBUS_TIMEOUT_MS);
-
-	do {
-		*status = pci_mmio_read_config32(dev, SMBSTAT(mcid));
-		if (!(*status & SMBSTAT_SMB_BUSY))
-			break;
-	} while (!stopwatch_expired(&sw));
-
-	return (!(*status & SMBSTAT_SMB_BUSY));
-}
-
-static bool claim_controller(pci_devfn_t dev, enum memory_controller_id mcid)
-{
-	uint32_t cntl, status;
-
-	cntl = pci_mmio_read_config32(dev, SMBCNTL(mcid));
-	cntl &= ~SMBCNTL_TSOD_POLL_EN;
-	cntl &= ~SMBCNTL_DIS_WRT;
-	pci_mmio_write_config32(dev, SMBCNTL(mcid), cntl);
-
-	return poll_ready(dev, mcid, &status);
-}
-
-
-static void release_controller(pci_devfn_t dev, enum memory_controller_id mcid)
-{
-	uint32_t cntl, status;
-
-	cntl = pci_mmio_read_config32(dev, SMBCNTL(mcid));
-	cntl |= SMBCNTL_TSOD_POLL_EN;
-	pci_mmio_write_config32(dev, SMBCNTL(mcid), cntl);
-
-	poll_ready(dev, mcid, &status);
-}
-
-int imc_smbus_spd_xfer(pci_devfn_t dev, uint8_t slave_addr, uint8_t bus_addr,
-		       enum device_type_id dti, enum access_width width,
-		       enum memory_controller_id mcid, enum smbus_command cmd, void *data)
-{
-	int ret = -1;
-	uint32_t cmdbits = 0, stat = 0, cntlbits = 0, data_mask = 0;
-	uint16_t wdata = 0, rdata = 0;
-
-	/* slaves addresses are 7 bits length */
-	if (slave_addr > (1 << 7) - 1) {
-		printk(BIOS_ERR, "invalid SMBus address, aborting xfer\n");
-		return -1;
-	}
-
-	if (!claim_controller(dev, mcid)) {
-		printk(BIOS_ERR, "ayee! couldn't claim controller, giving up xfer\n");
-		return -1;
-	}
-
-	cmdbits = (slave_addr << SMBCMD_SA_SHIFT);
-	cmdbits |= (bus_addr << SMBCMD_BA_SHIFT);
-
-	if (cmd == IMC_WRITE) {
-		wdata = (width == IMC_DATA_BYTE ? read8(data) : cpu_to_be16(read16(data)));
-		cmdbits |= (SMBCMD_TYPE_WRITE | wdata);
-	} else {
-		cmdbits |= SMBCMD_TYPE_READ;
-	}
-
-	if (width == IMC_DATA_WORD) {
-		cmdbits |= SMBCMD_WORD_ACCESS;
-		data_mask = 0xffff;
-	} else {
-		data_mask = 0xff;
-	}
-
-	cntlbits = pci_mmio_read_config32(dev, SMBCNTL(mcid));
-	cntlbits &= ~SMBCNTL_DTI_MASK;
-	cntlbits |= (dti << SMBCNTL_DTI_SHIFT);
-
-	pci_mmio_write_config32(dev, SMBCNTL(mcid), cntlbits);
-
-	/* Pull the trigger */
-	cmdbits |= SMBCMD_TRIGGER;
-	pci_mmio_write_config32(dev, SMBCMD(mcid), cmdbits);
-
-	if (!poll_ready(dev, mcid, &stat)) {
-		printk(BIOS_ERR, "IMC xfer failed for slave %x", slave_addr);
-		ret = -1;
-		goto cleanup;
-	}
-
-	if (stat & SMBSTAT_SBE) {
-		ret = -1;
-		goto cleanup;
-	}
-
-	if (cmd == IMC_READ) {
-		rdata = stat & data_mask;
-		if (width == IMC_DATA_WORD)
-			write16(data, cpu_to_be16(rdata));
-		else
-			write8(data, rdata);
-	}
-
-	ret = 0;
-cleanup:
-	release_controller(dev, SMBSTAT(mcid));
-
-	return ret;
-}